Compressor hydrogen environment testing device

Abstract

The utility model provides a compressor hydrogen environment testing device, which particularly relates to the technical field of compressor testing and comprises a hydrogen supply module, a compressor testing module, a safety control module and a recycling module. The hydrogen supply module is responsible for conveying hydrogen to the compressor test module; the compressor test module is connected with the hydrogen supply module and used for compressing hydrogen to test compressor performance; the safety control module is connected with the compressor test module, regulates and controls the air pressure in the hydrogen conveying process and extinguishes sparks in the hydrogen conveying process; the recycling module is connected with the compressor testing module and the safety control module, and recycling of hydrogen is achieved. The device solves the safety problem that the performance of the compressor cannot be tested in the hydrogen environment, the test safety is enhanced, the test period is shortened, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor testing technical field, specifically, relate to a kind of compressor hydrogen environment testing device. BACKGROUND

[0002] With the rapid development of clean energy technology, hydrogen as an efficient, environmentally friendly energy carrier, plays an increasingly important role in energy systems. Compressor as a key equipment in the process of hydrogen storage, transportation and utilization, its performance stability and safety are directly related to the efficiency and reliability of the entire hydrogen energy system. However, the operating characteristics of the compressor in the hydrogen environment are significantly different from the traditional medium such as nitrogen, such as hydrogen embrittlement phenomenon, temperature and pressure response characteristics, etc., so the flammability and explosiveness of hydrogen may cause safety problems, which poses new challenges to the design and testing of the compressor.

[0003] Traditionally, to solve the problem of verifying the performance of the compressor in the hydrogen environment, the industry generally adopts the method of testing in the nitrogen environment. This method is based on the similarity of nitrogen and hydrogen in some physical properties, trying to simulate the effect of hydrogen environment by adjusting the test parameters. However, due to the essential differences between hydrogen and nitrogen in chemical properties, permeability, thermal conductivity, etc., the test results in the nitrogen environment often cannot accurately reflect the actual working state of the compressor in the hydrogen environment. In addition, the traditional testing method is mostly limited to the verification during the hydrogenation operation of the compressor, lacking comprehensive performance testing and fault prediction means, resulting in problems such as substandard performance, many safety hazards in actual application, and once the problem is found, the processing cycle is long and the cost is high.

[0004] In summary, how to solve the technical problem that the compressor cannot be tested in the hydrogen environment due to safety problems is a pressing problem. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a kind of compressor hydrogen environment testing device, to at least solve the technical problem that the compressor cannot be tested in the hydrogen environment due to safety problems, so as to enhance the safety of the compressor in the hydrogen environment, shorten the test cycle and reduce the cost.

[0006] In order to achieve the above purpose, the utility model provides a kind of compressor hydrogen environment testing device, comprising:

[0007] hydrogen supply module, the hydrogen supply module is installed in the preset position of the testing device;

[0008] compressor testing module, the compressor testing module is connected with the hydrogen supply module;

[0009] a safety control module connected with the compressor testing module;

[0010] a recycling module connected with the compressor testing module and the safety control module;

[0011] The hydrogen supply module is configured to supply hydrogen to the compressor testing module, the safety control module is configured to regulate the pressure of the hydrogen supply process and extinguish sparks during the hydrogen supply process, and the recycling module is configured to recycle and utilize hydrogen.

[0012] Further, the hydrogen supply module comprises:

[0013] A hydrogen storage grid arranged in a grid pattern at a predetermined position;

[0014] A first pneumatic valve, a first check valve, and a first pressure reducing valve connected between the hydrogen storage grid and the compressor testing module.

[0015] Further, the compressor testing module comprises:

[0016] A compressor body connected with the hydrogen supply module, the compressor body having an inlet and an outlet;

[0017] A high-pressure buffer tank connected at the outlet of the compressor body;

[0018] A low-pressure buffer tank connected at the inlet of the compressor body;

[0019] A flow meter arranged between the low-pressure buffer tank and the inlet of the compressor body.

[0020] Further, the safety control module comprises:

[0021] A plurality of pressure transmitters arranged in the hydrogen supply module, the compressor testing module, and the recycling module, respectively;

[0022] A plurality of safety valves corresponding to the plurality of pressure transmitters, the plurality of safety valves being installed between the plurality of pressure transmitters and a vent line, respectively;

[0023] A flame arrester installed between the plurality of safety valves and the vent line.

[0024] Further, the recycling module comprises:

[0025] A second pneumatic valve, a second check valve and a second pressure reducing valve are installed inside the compressor test module.

[0026] A back pressure valve is arranged between the high pressure buffer tank and the low pressure buffer tank, and is connected with the second pneumatic valve, the second check valve and the second pressure reducing valve.

[0027] Further, the test device further comprises a nitrogen replacement module, which is connected with the hydrogen supply module and the compressor test module.

[0028] Further, the nitrogen replacement module comprises:

[0029] Nitrogen containers are arranged in a grid shape at a predetermined position, and are connected with the hydrogen supply module and the compressor test module.

[0030] A manual ball valve, a third pressure reducing valve and a third pneumatic valve are connected between the nitrogen container and the hydrogen supply module.

[0031] Further, the test device further comprises a plurality of PLC controllers, which are respectively connected with the first pneumatic valve, the second pneumatic valve, the third pneumatic valve, a plurality of pressure transmitters and a plurality of safety valves.

[0032] The utility model provides a kind of compressor hydrogen environment test device, and the device aims at solving the safety and technical problem of performance test of compressor under hydrogen environment.The device mainly includes hydrogen supply module, compressor test module, safety control module and recycling module.Hydrogen supply module is installed in predetermined position, is responsible for the stable delivery of hydrogen to compressor test module.Compressor test module is closely connected with hydrogen supply module, simulates hydrogen compression process under actual working scene.Safety control module is connected with compressor test module, accurately controls gas pressure in hydrogen delivery process, ensures test safety.At the same time, the module can effectively extinguish spark possibly generated in hydrogen delivery, prevents accident.Circulation recycling module is connected with compressor test module and safety control module, realizes the recycling of hydrogen, reduces resource waste.This module design is ingenious, ensures that there is no gas waste in test process, improves test efficiency.Said above, the device is synergized by four modules, not only enhances the safety of performance test of compressor under hydrogen environment, but also significantly shortens test cycle, reduces test cost, provides strong support for technical progress of compressor industry. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings accompanying the specification provide further understanding of the present application, the illustrative embodiments thereof, and explanations for the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0034] Figure 1 is a connection schematic diagram of a compressor hydrogen environment test device according to an embodiment of the present application;

[0035] Figure 2 is a specific connection schematic diagram of a compressor hydrogen environment test device according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with embodiments.

[0037] The compressor hydrogen environment test device provided by the embodiment of the present application, as shown in Figure 1 The present application provides a compressor hydrogen environment test device, which comprises a hydrogen supply module, a compressor test module, a safety control module and a recycling module, the hydrogen supply module is installed at a predetermined position of the test device, the compressor test module is connected with the hydrogen supply module, the safety control module is connected with the compressor test module, the recycling module is connected with the compressor test module and the safety control module, wherein the hydrogen supply module is used for delivering hydrogen to the compressor test module, the safety control module is used for regulating the air pressure of the hydrogen delivery process and extinguishing the spark in the hydrogen delivery process, and the recycling module is used for recycling hydrogen. The following is a detailed description of the embodiment:

[0038] I. Device structure

[0039] The compressor hydrogen environment test device of the embodiment mainly comprises the following modules: a hydrogen supply module, a compressor test module, a safety control module and a recycling module.

[0040] 1. Hydrogen supply module

[0041] The module mainly comprises a hydrogen storage compartment (the specification is 12*40L, and the filling pressure is 15 megapascals) and related pipelines and valves.

[0042] The hydrogen storage compartment is connected with the gas inlet of the compressor test module through a 1-inch hydrogen pipeline.

[0043] A pneumatic valve, a check valve, a pressure reducing valve and the like are configured on the hydrogen pipeline to ensure the safe and controllable delivery of hydrogen.

[0044] 2. Compressor test module

[0045] The module mainly includes a compressor body, a high-pressure buffer tank (70 MPa, 20 L), a low-pressure buffer tank (35 MPa, 210 L), and a flow meter.

[0046] The gas inlet of the compressor body is connected with the hydrogen supply module, and the outlet is connected with the high-pressure buffer tank.

[0047] Between the compressor body and the high-pressure buffer tank, a one-way valve, a back pressure valve, a pressure transmitter, a pneumatic valve, and a safety valve are arranged to ensure the safety and stability of the compressor during the test.

[0048] The flow meter is used to measure and record the gas flow through the pipeline, and is one of the important monitoring devices in the test device. In the compressor hydrogen environment test device, the flow meter can monitor the flow change of the compressor inlet and outlet gas in real time, providing guarantee for the accuracy and reliability of the test data. Through the measurement of the flow meter, the performance of the compressor under different working conditions can be understood, providing basis for the optimization and improvement of the equipment.

[0049] 3. Safety control module

[0050] The module mainly includes a pressure transmitter, a safety valve, a venting pipeline, and a flame arrester.

[0051] The pressure transmitter monitors the pressure in the pipeline in real time, and once the pressure exceeds, it is vented through the venting pipeline.

[0052] The safety valve plays a role in protecting the equipment, ensuring that the equipment can automatically release pressure in the case of overpressure, avoiding equipment damage or accidents. When the pressure in the pipeline or equipment exceeds the set value, the safety valve will automatically open and discharge the excess gas to the external environment, thereby maintaining the pressure in the pipeline or equipment within a safe range. The setting of the safety valve helps to improve the safety and reliability of the test device, ensuring that the test process can proceed smoothly and protecting the safety of the test personnel and equipment.

[0053] The flame arrester is arranged on the venting pipeline to prevent sparks from causing explosions during the venting of hydrogen.

[0054] In addition, a PLC control system is also arranged to realize the execution and monitoring of all pneumatic valves and pressure sensors, further ensuring the safety of the test process.

[0055] 4. Recycling module

[0056] The module mainly includes a back pressure valve, a pressure reducing valve, a pneumatic valve, and a one-way valve.

[0057] Between the low-pressure buffer tank and the high-pressure buffer tank, a back pressure valve, a pressure reducing valve, a pneumatic valve and a check valve are arranged to ensure automatic operation of the equipment.

[0058] After the excess pressure enters the low-pressure buffer tank, it is adjusted by the pressure reducing valve and the back pressure valve, and then reenters the gas inlet of the compressor, realizing the recycling of hydrogen.

[0059] II. Connection method

[0060] 1. Connection of the hydrogen supply module and the compressor test module:

[0061] The hydrogen storage compartment is connected to the gas inlet of the compressor body through a 1-inch hydrogen pipeline.

[0062] A pneumatic valve, a check valve and a pressure reducing valve are installed in sequence on the connecting pipeline to ensure safe hydrogen delivery and pressure regulation.

[0063] A flow meter is arranged between the low-pressure buffer tank and the inlet of the compressor body to measure and record the gas flow through the pipeline.

[0064] 2. Connection of the safety control module:

[0065] Pressure transmitters are installed on the pipeline between the compressor body and the high-pressure buffer tank, and on the outlet pipeline of the low-pressure buffer tank.

[0066] Safety valves are installed on the pipeline between the compressor body and the high-pressure buffer tank, and on the outlet pipeline of the high-pressure buffer tank.

[0067] After the vent line is connected in series with the flame arrester, it is connected to the hydrogen discharge point.

[0068] The PLC control system is connected to all pneumatic valves and pressure sensors through cables to realize real-time monitoring and control.

[0069] 3. Connection of the recycling module:

[0070] A flow meter is installed on the pipeline between the low-pressure buffer tank and the compressor body to monitor the flow of recycled hydrogen.

[0071] A pressure reducing valve is installed after the flow meter to regulate the pressure of the recycled hydrogen.

[0072] The hydrogen after pressure reduction is reintroduced into the gas inlet of the compressor body through a pipeline to realize the recycling of hydrogen.

[0073] III. Working principle

[0074] 1. The hydrogen supply module delivers hydrogen to the compressor test module.

[0075] 2. The compressor body pressurizes the hydrogen gas, and sends the hydrogen gas with an outlet pressure of 45 MPa to a high-pressure buffer tank.

[0076] 3. A circulation loop is arranged between the high-pressure buffer tank and a low-pressure buffer tank, so as to realize recycling of the hydrogen gas.

[0077] 4. A safety control module monitors the pressure in the pipeline in real time, and when the pressure is overproof, the safety control module releases the hydrogen gas through a venting pipeline, and a flame arrester prevents spark generation.

[0078] 5. A PLC control system realizes execution and monitoring of all pneumatic valves and pressure sensors, so as to ensure safety and stability of the test process.

[0079] In conclusion, the compressor hydrogen environment test device can solve the safety problem of performance test of the compressor in the hydrogen environment, enhance test safety, shorten the test period, and reduce the cost.

[0080] Further, the hydrogen supply module includes: a hydrogen storage grid, a first pneumatic valve, a first check valve and a first pressure reducing valve, the hydrogen storage grid is arranged in a grid shape at a predetermined position; the first pneumatic valve, the first check valve and the first pressure reducing valve are connected between the hydrogen storage grid and the compressor test module. The utility model further provides a specific implementation of the compressor hydrogen environment test device. The hydrogen supply module includes: a hydrogen storage grid, a first pneumatic valve, a first check valve and a first pressure reducing valve. The specific configuration and connection mode of these components are as follows: the hydrogen storage grid is arranged in a grid shape and at a predetermined position. The design of this grid arrangement helps to efficiently store and supply hydrogen, while ensuring the safety of operation. The first pneumatic valve is connected at the outlet of the hydrogen storage grid, used to control the flow of hydrogen. When it is needed to deliver hydrogen to the compressor test module, the first pneumatic valve will be opened, allowing hydrogen to pass. Conversely, when it is not needed to deliver hydrogen, the first pneumatic valve will be closed, cutting off the flow of hydrogen. The first check valve is connected after the first pneumatic valve, ensuring that hydrogen can only flow in one direction, preventing gas backflow or reverse flow from causing safety hazards. This design helps to protect the safety and stability of the entire test device. The first pressure reducing valve is connected after the first check valve, used to adjust the pressure of hydrogen. Since the hydrogen pressure in the hydrogen storage grid is high, direct delivery to the compressor test module may cause equipment damage or safety hazards. Therefore, the first pressure reducing valve will reduce the pressure of hydrogen to a range suitable for the operation of the compressor test module. These components (hydrogen storage grid, first pneumatic valve, first check valve and first pressure reducing valve) are connected in sequence through pipes, forming a complete hydrogen supply channel. When it is needed to test the performance of the compressor in a hydrogen environment, hydrogen will flow out of the hydrogen storage grid, pass through the control of the first pneumatic valve, the one-way flow protection of the first check valve and the pressure adjustment of the first pressure reducing valve, and finally be delivered to the compressor test module. In specific implementation, the person skilled in the art can select appropriate models of hydrogen storage grid, first pneumatic valve, first check valve and first pressure reducing valve according to actual needs, and assemble them together according to the above connection mode. At the same time, it is also necessary to ensure that the sealing of all connections is good, so as to prevent hydrogen leakage from causing safety hazards.

[0081] Further, the compressor test module comprises a compressor body, a high-pressure buffer tank, a low-pressure buffer tank and a flow meter. The compressor body is connected with the hydrogen supply module, and has an inlet and an outlet. The high-pressure buffer tank is connected at the outlet position of the compressor body. The low-pressure buffer tank is connected at the inlet position of the compressor body. The flow meter is arranged between the low-pressure buffer tank and the inlet of the compressor body. The utility model further provides a specific implementation of the compressor hydrogen environment test device. The compressor test module comprises a compressor body, a high-pressure buffer tank, a low-pressure buffer tank and a flow meter. The specific configuration and connection mode of these components are as follows: the compressor body is the core component of the entire test device, has an inlet and an outlet, and is used for compressing and conveying hydrogen. The high-pressure buffer tank is connected at the outlet position of the compressor body and is used for storing high-pressure hydrogen compressed by the compressor body. The design of the high-pressure buffer tank can withstand high pressure and ensure stable supply of hydrogen during the test. The low-pressure buffer tank is connected at the inlet position of the compressor body and is used for storing low-pressure hydrogen conveyed from the hydrogen supply module. During the test, the low-pressure buffer tank can smoothly provide hydrogen to the compressor body, avoiding the influence of pressure fluctuation on the performance of the compressor. The flow meter is arranged on the pipeline between the low-pressure buffer tank and the inlet of the compressor body and is used for monitoring the hydrogen flow entering the compressor body in real time. This design helps to accurately evaluate the performance of the compressor and ensures the accuracy and reliability of the test data. In specific implementation, the compressor body, the high-pressure buffer tank, the low-pressure buffer tank and the flow meter are sequentially connected through the pipeline to form a complete hydrogen compression and test channel. Hydrogen is conveyed from the hydrogen supply module to the low-pressure buffer tank, enters the inlet of the compressor body after being monitored by the flow meter. The compressor body compresses hydrogen and conveys high-pressure hydrogen to the high-pressure buffer tank for storage. During the test, the working parameters of the compressor, such as speed and pressure, can be adjusted as needed to evaluate its performance under different conditions. At the same time, in order to ensure the safety and accuracy of the test, strict sealing inspection and calibration of the entire test device are also required. In particular, the connection between the compressor body, the high-pressure buffer tank, the low-pressure buffer tank and the flow meter needs to be sealed well to prevent hydrogen leakage and cause safety hazards. In addition, the flow meter needs to be calibrated regularly to ensure the accuracy of its measurement results.

[0082] Further, the safety control module includes a plurality of pressure transmitters, a plurality of safety valves, a venting pipeline, and a flame arrester. The plurality of pressure transmitters are respectively arranged in the hydrogen supply module, the compressor test module, and the recycling module. The plurality of safety valves correspond to the plurality of pressure transmitters one-to-one, and the plurality of safety valves are respectively installed between the plurality of pressure transmitters and the venting pipeline. The flame arrester is installed between the plurality of safety valves and the venting pipeline. Specifically, the safety control module includes a plurality of pressure transmitters, a plurality of safety valves, a venting pipeline, and a flame arrester. The specific configuration and connection mode of these components are as follows: the plurality of pressure transmitters are respectively arranged in the hydrogen supply module, the compressor test module, and the recycling module, for real-time monitoring of the hydrogen pressure in each module. Each pressure transmitter is directly connected to the corresponding module through a pipeline or a connecting piece, ensuring accurate measurement of the hydrogen pressure in the module. The plurality of safety valves correspond to the plurality of pressure transmitters one-to-one, and are respectively installed between the plurality of pressure transmitters and the venting pipeline. When the hydrogen pressure in a certain module exceeds the preset safety value, the corresponding safety valve will automatically open, discharging excess hydrogen through the venting pipeline to a safe area to avoid equipment damage or safety hazards caused by overpressure. The venting pipeline is a dedicated hydrogen discharge channel connecting each safety valve to ensure that hydrogen can be quickly discharged to a safe area in the event of overpressure. The design of the venting pipeline needs to take into account the flammable and explosive nature of hydrogen, so it is usually made of corrosion-resistant and high-temperature-resistant materials and is equipped with appropriate protective measures. The flame arrester is installed between the plurality of safety valves and the venting pipeline to prevent sparks or high temperatures generated during the venting process from causing hydrogen explosions. The flame arrester is filled with special flame-resistant materials that can effectively prevent the spread of flames or high temperatures, ensuring the safety of the venting process. In specific implementation, each pressure transmitter, safety valve, venting pipeline, and flame arrester needs to be installed and debugged according to specifications. In particular, the set pressure of the safety valve needs to be accurately set according to the actual working pressure of each module to ensure timely response in the event of overpressure. At the same time, the venting pipeline and the flame arrester also need to be regularly maintained and inspected to ensure they are in good working condition. In addition, to further improve the safety of the test device, a PLC controller can also be set up. The PLC control system can communicate with each pressure transmitter, safety valve, and other components to monitor the hydrogen pressure in real time and automatically trigger the opening of the safety valve in the event of overpressure, achieving automated safety control.

[0083] Further, the recycling module comprises a second pneumatic valve, a second check valve, a second pressure reducing valve, and a back pressure valve, the second pneumatic valve, the second check valve, and the second pressure reducing valve are installed inside the compressor test module; the back pressure valve is arranged between the high-pressure buffer tank and the low-pressure buffer tank, and is connected with the second pneumatic valve, the second check valve, and the second pressure reducing valve. The utility model further provides a specific implementation of the compressor hydrogen environment test device, wherein the structure of the recycling module is described in more detail, and the recycling module comprises a second pneumatic valve, a second check valve, a second pressure reducing valve, and a back pressure valve. The specific configuration and connection mode of these components are as follows: the second pneumatic valve, the second check valve, and the second pressure reducing valve are all installed inside the compressor test module, and are used for controlling the recycling process of hydrogen. The second pneumatic valve is used for controlling the flow of hydrogen, and when it is necessary to recycle hydrogen, the second pneumatic valve is opened to allow hydrogen to flow out of the compressor test module; on the contrary, when it is not necessary to recycle hydrogen, the second pneumatic valve is closed to cut off the flow of hydrogen. The second check valve ensures that hydrogen can only flow in one direction, preventing gas backflow from causing safety hazards. The second pressure reducing valve is used for adjusting the pressure of hydrogen, ensuring that the pressure of recycled hydrogen is moderate, facilitating subsequent processing or recycling. The back pressure valve is arranged between the high-pressure buffer tank and the low-pressure buffer tank, and is used for adjusting the back pressure inside the system, ensuring that the compressor works under stable pressure. The back pressure valve is connected with the second pneumatic valve, the second check valve, and the second pressure reducing valve through pipelines, forming a complete hydrogen recycling channel. When the pressure of hydrogen in the compressor test module decreases to a preset value, the back pressure valve is opened to allow high-pressure hydrogen in the high-pressure buffer tank to flow into the low-pressure buffer tank through the back pressure valve, providing stable back pressure for the compressor. At the same time, the second pneumatic valve, the second check valve, and the second pressure reducing valve work cooperatively to recycle hydrogen in the compressor test module into the low-pressure buffer tank or other storage devices. In specific implementation, the selection of the second pneumatic valve, the second check valve, the second pressure reducing valve, and the back pressure valve needs to be determined according to the actual working pressure and flow of the system. At the same time, the installation positions of these components also need to be accurately calculated to ensure that the flow path of hydrogen is the shortest and the efficiency is the highest. In addition, in order to ensure the safety of the recycling process, regular maintenance and inspection are also needed for these components, and in particular, the adjustment function of the back pressure valve needs to be regularly checked to ensure that it is in good working condition. In summary, the recycling module structure of the compressor hydrogen environment test device provided in the embodiment is clear, connected, safe and reliable, can effectively recycle hydrogen in the compressor test module, and realizes the recycling of resources. By reasonably arranging the second pneumatic valve, the second check valve, the second pressure reducing valve, and the back pressure valve, the stability and safety of hydrogen in the recycling process can be ensured, and strong support is provided for the performance test of the compressor.

[0084] Further, the test device further includes a nitrogen replacement module connected with the hydrogen supply module and the compressor test module. The utility model further provides a specific implementation of compressor hydrogen environment test device, wherein the nitrogen replacement module is newly added, is used for replacing nitrogen to the system before and after the test, to ensure the safety and accuracy of the test process. The test device further includes a nitrogen replacement module, which is connected with the hydrogen supply module and the compressor test module through a pipeline. The specific configuration and connection mode of the nitrogen replacement module are as follows: the nitrogen replacement module includes a nitrogen source, a nitrogen control valve, a nitrogen pipeline and corresponding connecting pieces. The nitrogen source provides nitrogen for replacement, the nitrogen control valve is used for controlling the flow of nitrogen, and the nitrogen pipeline is responsible for conveying nitrogen from the nitrogen source to the hydrogen supply module and the compressor test module. Before the test starts, the nitrogen control valve will be opened, allowing nitrogen to flow from the nitrogen source through the nitrogen pipeline into the hydrogen supply module and the compressor test module, replacing the air or other impurities in the system, and ensuring the purity of the test environment. During the replacement process, the flow and pressure of nitrogen can be controlled by adjusting the opening of the nitrogen control valve to meet the test requirements. After the test is completed, the nitrogen replacement module will also be replaced with nitrogen, and the residual hydrogen in the system will be replaced to eliminate safety hazards. At this time, the nitrogen control valve will be opened again, and nitrogen will flow from the nitrogen source into the system, gradually discharging hydrogen to a safe area. After the replacement is completed, the nitrogen control valve will be closed, cutting off the flow of nitrogen, and the system will return to the initial state. In specific implementation, the connection of the nitrogen replacement module needs to ensure good sealing to avoid safety hazards caused by nitrogen leakage. At the same time, the selection of the nitrogen control valve needs to be determined according to the actual working pressure and flow of the system to ensure the stability and efficiency of the replacement process. In addition, in order to monitor the effect of nitrogen replacement, nitrogen concentration detection devices can also be set in the hydrogen supply module and the compressor test module to monitor the nitrogen concentration in real time, ensuring the accuracy and safety of the replacement process. In summary, the nitrogen replacement module newly added in the compressor hydrogen environment test device provided in the embodiment has clear structure, standard connection and safety and reliability, which can effectively replace nitrogen to the system before and after the test, ensuring the safety and accuracy of the test process. By reasonably setting the nitrogen source, nitrogen control valve, nitrogen pipeline and other components, accurate control of the nitrogen replacement process can be realized, providing strong support for the performance test of the compressor.

[0085] Further, the nitrogen replacement module comprises: a nitrogen storage grid, a manual ball valve, a third pressure reducing valve and a third pneumatic valve, the nitrogen storage grid is arranged in a grid shape at a preset position, and the nitrogen storage grid is connected with the hydrogen supply module and the compressor test module; the manual ball valve, the third pressure reducing valve and the third pneumatic valve are connected between the nitrogen storage grid and the hydrogen supply module. The specific implementation of the compressor hydrogen environment test device is further provided, wherein the structure of the nitrogen replacement module is described in more detail. The nitrogen replacement module comprises: a nitrogen storage grid, a manual ball valve, a third pressure reducing valve and a third pneumatic valve. The specific configuration and connection mode of these components are as follows: the nitrogen storage grid is arranged in a grid shape at a preset position and is used for storing and supplying nitrogen. The nitrogen storage grid is connected with the hydrogen supply module and the compressor test module through a pipeline to form a complete nitrogen replacement system. The design of the nitrogen storage grid enables efficient delivery of nitrogen to the area that needs to be replaced, while ensuring the stability and safety of the system. The manual ball valve, the third pressure reducing valve and the third pneumatic valve are connected between the nitrogen storage grid and the hydrogen supply module for controlling the flow and pressure of nitrogen. The manual ball valve is used to manually open or close the nitrogen channel so as to perform nitrogen replacement operation when needed. The third pressure reducing valve is used to adjust the pressure of nitrogen to ensure that the pressure of nitrogen can be reduced to a safe and appropriate pressure range before entering the hydrogen supply module and the compressor test module. The third pneumatic valve is used to automatically control the flow of nitrogen to achieve rapid replacement of nitrogen according to the system requirements. In specific implementation, the nitrogen storage grid is connected with the manual ball valve through a dedicated nitrogen pipeline, the manual ball valve is in turn connected with the third pressure reducing valve and the third pneumatic valve, and finally connected with the hydrogen supply module and the compressor test module through a pipeline. In this way, when nitrogen replacement is needed, the operator can manually open the manual ball valve, and nitrogen will flow out of the nitrogen storage grid, the pressure is adjusted by the third pressure reducing valve, and then controlled by the third pneumatic valve to enter the hydrogen supply module and the compressor test module for replacement. After the replacement is completed, the operator can manually close the manual ball valve to cut off the flow of nitrogen. In order to ensure the safety and accuracy of the nitrogen replacement process, a nitrogen concentration detection device and a pressure monitoring device can also be provided. The nitrogen concentration detection device is used to monitor the nitrogen concentration in real time during the nitrogen replacement process to ensure that the replacement effect meets the requirements. The pressure monitoring device is used to monitor the pressure change in the nitrogen pipeline and the system to prevent safety hazards caused by overpressure or low pressure. In summary, the nitrogen replacement module structure of the compressor hydrogen environment test device provided in this embodiment is clear, connected, safe and reliable, and can effectively replace the system with nitrogen before and after the test to ensure the safety and accuracy of the test process. By reasonably arranging the nitrogen storage grid, the manual ball valve, the third pressure reducing valve and the third pneumatic valve and other components, accurate control of the nitrogen replacement process can be realized to provide strong support for the performance test of the compressor.

[0086] Further, the test device further includes a plurality of PLC controllers, and the plurality of PLC controllers are connected with the first pneumatic valve, the second pneumatic valve, the third pneumatic valve, the plurality of pressure transmitters and the plurality of safety valves respectively. The utility model further provides a specific implementation of the compressor hydrogen environment test device, wherein a plurality of PLC (programmable logic controller) controllers are newly added, which are used for realizing accurate control and monitoring of each key component in the system. The test device includes a plurality of PLC controllers, and the PLC controllers are connected with the first pneumatic valve, the second pneumatic valve, the third pneumatic valve, the plurality of pressure transmitters and the plurality of safety valves respectively. The specific connection mode is as follows: each PLC controller is connected with the corresponding component through a dedicated signal line or a communication bus. For example, the first PLC controller is connected with the first pneumatic valve through a signal line, which is used for controlling the opening and closing of the first pneumatic valve, so as to adjust the flow of hydrogen in the hydrogen supply module. The second PLC controller is also connected with the second pneumatic valve through a signal line, which is used for controlling the working state of the second pneumatic valve in the recycling module. The third PLC controller is connected with the third pneumatic valve, which is responsible for the flow control of nitrogen in the nitrogen replacement module. In addition, the plurality of PLC controllers are connected with the plurality of pressure transmitters respectively. The pressure transmitters are used for monitoring the pressure values of each key position in the system in real time, and the pressure values are converted into electrical signals and transmitted to the PLC controllers. The PLC controller can judge the pressure state of the system according to the received pressure signal, and then take corresponding control measures, such as adjusting the opening degree of the pneumatic valve, starting or stopping the compressor, so as to ensure the stable operation of the system. At the same time, the plurality of PLC controllers are also connected with the plurality of safety valves. The safety valve is an important safety device in the system, which is used for automatically opening when the pressure of the system exceeds the set value, releasing the excess pressure, and preventing the system from overpressure accident. The PLC controller can discover and handle potential safety hazards in time by monitoring the state of the safety valve, and ensure the safety of the test process. In the specific implementation, the selection of the PLC controller needs to be determined according to the actual demand and scale of the system. At the same time, in order to ensure the communication stability and reliability between the PLC controller and each component, appropriate communication protocol and protection measures need to be adopted, such as setting communication redundancy, adopting anti-interference measures and the like. In summary, the plurality of PLC controllers newly added in the compressor hydrogen environment test device provided in the embodiment have clear structure, standard and safe and reliable connection, and can realize accurate control and monitoring of each key component in the system. By reasonably setting the connection mode of the PLC controller and the first pneumatic valve, the second pneumatic valve, the third pneumatic valve, the pressure transmitter and the safety valve and the like, the stability and safety of the test process can be ensured, and strong support is provided for the performance test of the compressor.

[0087] In order to more specifically illustrate the compressor hydrogen environment test device provided by the present application, the present application specifically gives the names, models (as shown in Table 1) and connection modes (as shown in Table 2) of the optional preferred pipe materials and equipment of the compressor hydrogen environment test device for reference. The following is a specific operation process of using the test device to perform compressor hydrogen environment test in an actual production environment: Figure 2

[0088] I. Nitrogen commissioning

[0089] Nitrogen replacement:

[0090] 1. Initial state: all valves are closed;

[0091] 2. Nitrogen cylinder valve is opened;

[0092] 3. Open "pneumatic valve 1", "pneumatic valve 4" and "pneumatic valve 5", and when the pressures of "pressure transmitter 1", "pressure transmitter 2" and "pressure transmitter 3" are lower than 1 Mpa, close "pneumatic valve 4" and "pneumatic valve 5";

[0093] 4. Fully open the back pressure valve, and adjust the outlet pressure of the pressure reducing valve to the maximum;

[0094] 5. Open "pneumatic valve 2", and when the pressures of "pressure transmitter 1", "pressure transmitter 2" and "pressure transmitter 3" reach 3 Mpa, close "pneumatic valve 2" and stand for 2 minutes;

[0095] 6. Open "pneumatic valve 4" and "pneumatic valve 5", and when the pressures of "pressure transmitter 1", "pressure transmitter 2" and "pressure transmitter 3" are lower than 1 Mpa, close "pneumatic valve 4" and "pneumatic valve 5";

[0096] 7. Repeat steps 5 and 6 for 5 times, and close "pneumatic valve 1";

[0097] Nitrogen commissioning:

[0098] 1. Complete the "replacement with nitrogen environment" process

[0099] 2. Open "pneumatic valve 2";

[0100] 3. Start the compressor, adjust the "back pressure valve" so that the pressure of "pressure transmitter 2" reaches the experimental value,

[0101] 4. In order to ensure the safety of the hydrogen environment test, the system is first tested using nitrogen before hydrogen is supplied, and when the equipment is stably running, the "back pressure valve" is adjusted according to the required compressor outlet pressure, and when the pressure reaches the expected value, the adjustment is stopped; adjust the inlet pressure from 3 MPa, 5 MPa, 10 MPa and 12.5 MPa different pressure levels, start the compressor, and start the cycle pressure. ​

[0102] Nitrogen recovery:

[0103] After the nitrogen test run is completed, in order to reduce the waste of nitrogen resources and lower nitrogen costs, the nitrogen is recycled. The specific operation is as follows:

[0104] 1. Initially, all valves are closed;

[0105] 2. Slowly adjust "pressure reducing valve 1" so that the pressure of "pressure transmitter 1" is greater than 15 MPa but not higher than 20 MPa;

[0106] 3. Open the "Nitrogen Cylinder Group Valve", "Manual Ball Valve", and "Pneumatic Valve 2". After the pressure of "Pressure Transmitter 1" approaches 15 MPa, slowly adjust the back pressure valve so that the pressure of "Pressure Transmitter 3" does not exceed 35 MPa.

[0107] 4. Once the nitrogen cylinder group pressure reaches 15 MPa, the recovery is complete. Close the "Nitrogen Cylinder Group Valve" and the "Manual Ball Valve".

[0108] 5. Open "Pneumatic Valve 3", "Pneumatic Valve 4", and "Pneumatic Valve 5". Wait until the pressure of "Pressure Transmitter 1", "Pressure Transmitter 2", and "Pressure Transmitter 3" is close to atmospheric pressure, then close "Pneumatic Valve 3", "Pneumatic Valve 4", "Pneumatic Valve 5", and "Pneumatic Valve 2".

[0109] (II) Hydrogen test run

[0110] Hydrogen replacement:

[0111] 1. Initial state: All valves are closed;

[0112] 2. Open the valves of the hydrogen cylinder group and the nitrogen cylinder group;

[0113] 3. Open "Pneumatic Valve 4" and "Pneumatic Valve 5". When the pressure of "Pressure Transmitter 1", "Pressure Transmitter 2" and "Pressure Transmitter 3" is lower than 1 MPa, close "Pneumatic Valve 4" and "Pneumatic Valve 5".

[0114] 4. Open "Pneumatic Valve 1". When the pressure of "Pressure Transmitter 1", "Pressure Transmitter 2", and "Pressure Transmitter 3" reaches 3 MPa, close "Pneumatic Valve 1" and let it stand for 2 minutes.

[0115] 5. Open "Pneumatic Valve 4" and "Pneumatic Valve 5". When the pressure of "Pressure Transmitter 1", "Pressure Transmitter 2", and "Pressure Transmitter 3" is lower than 1 MPa, close "Pneumatic Valve 4" and "Pneumatic Valve 5".

[0116] 6. Repeat steps 4 and 5 five times to complete the replacement;

[0117] Hydrogen test run:

[0118] 1. Complete the "air replacement hydrogen environment" process or "nitrogen environment replacement hydrogen environment" process;

[0119] 2. Open "pneumatic valve 1";

[0120] 3. Start the compressor and adjust the "back pressure valve" to make the "pressure transmitter 2" pressure reach the experimental value,

[0121] 4. Adjust the "pressure reducing valve 1" to 5Mpa, and close the "pneumatic valve 1" when the "pressure transmitter pressure is higher than 20Mpa."

[0122] 5. Adjust the "pressure reducing valve 1" to the experimental pressure, and start the cycle pressure.

[0123] Start the chiller and pump station, and load pressure to the system through the gas cylinder. Set the inlet and exhaust pressure by adjusting the return pipeline valve.

[0124] Hydrogen recovery:

[0125] After the hydrogen test run is completed, in order to reduce the waste of hydrogen gas source and reduce the cost of hydrogen, the hydrogen is recycled, and the specific operation is as follows:

[0126] 1. All valves are closed in the initial state;

[0127] 2. Slowly adjust the "pressure reducing valve 1" to make the "pressure transmitter 1" pressure greater than 15Mpa and not higher than 20Mpa;

[0128] 3. Open the "hydrogen cylinder group valve" and open the "pneumatic valve 1", and slowly adjust the back pressure valve when the "pressure transmitter 1" pressure approaches 15Mpa, so that the "pressure transmitter 3" pressure is not higher than 35Mpa;

[0129] 4. When the hydrogen cylinder group pressure reaches 15Mpa, the recovery is completed, and the "hydrogen cylinder group valve" is closed;

[0130] 5. Execute the "replacement nitrogen environment" process;

[0131] 6. Close the hydrogen cylinder group valve and the nitrogen cylinder group valve, open the "pneumatic valve 1", "pneumatic valve 2", "pneumatic valve 3", "pneumatic valve 4", "pneumatic valve 5", and when the "pressure transmitter 1", "pressure transmitter 2", "pressure transmitter 3" pressure approaches normal pressure, close the "pneumatic valve 3", "pneumatic valve 4", "pneumatic valve 5", "pneumatic valve 1", "pneumatic valve 2";

[0132] It should be noted that the water pipeline, dispersion pipeline, nitrogen pipeline, hydrogen pipeline, support system, electrical system, instrument system and other pipelines or components (as shown in Table 1) required in the above process are selected and used according to the actual situation, and the present embodiment is not limited.

[0133] Table 1

[0134]

[0135]

[0136] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A compressor hydrogen environment testing device, characterized by, The test device comprises: a hydrogen supply module installed at a preset position of the test device; a compressor test module connected with the hydrogen supply module; a safety control module connected with the compressor test module; a recycling module connected with the compressor test module and the safety control module; wherein the hydrogen supply module is used to deliver hydrogen to the compressor test module, the safety control module is used to regulate the pressure of the hydrogen delivery process and extinguish sparks in the hydrogen delivery process, and the recycling module is used to recycle hydrogen.

2. The compressor hydrogen environment test apparatus according to claim 1, characterized by, The hydrogen supply module comprises: a hydrogen storage grid arranged in a grid shape at a preset position; a first pneumatic valve, a first check valve and a first pressure reducing valve connected between the hydrogen storage grid and the compressor test module.

3. The compressor hydrogen environment test apparatus of claim 2, wherein, The compressor test module comprises: a compressor body connected with the hydrogen supply module, the compressor body having an inlet and an outlet; a high-pressure buffer tank connected at the outlet of the compressor body; a low-pressure buffer tank connected at the inlet of the compressor body; a flow meter arranged between the low-pressure buffer tank and the inlet of the compressor body.

4. The compressor hydrogen environment test apparatus according to claim 3, characterized by The safety control module comprises: a plurality of pressure transmitters arranged in the hydrogen supply module, the compressor test module and the recycling module respectively; a plurality of safety valves corresponding to the plurality of pressure transmitters, the plurality of safety valves being respectively installed between the plurality of pressure transmitters and a vent line; a flame arrester installed between the plurality of safety valves and the vent line.

5. The compressor hydrogen environment test apparatus of claim 4, wherein, The recycling module comprises: a second pneumatic valve, a second check valve and a second pressure reducing valve installed inside the compressor test module; a back pressure valve arranged between the high-pressure buffer tank and the low-pressure buffer tank, the back pressure valve being connected with the second pneumatic valve, the second check valve and the second pressure reducing valve.

6. The compressor hydrogen environment test apparatus of claim 5, wherein, The test device further comprises a nitrogen replacement module connected with the hydrogen supply module and the compressor test module.

7. The compressor hydrogen environment test apparatus of claim 6, wherein, The nitrogen replacement module comprises: a nitrogen storage grid arranged in a grid shape at a preset position, the nitrogen storage grid being connected with the hydrogen supply module and the compressor test module; a manual ball valve, a third pressure reducing valve and a third pneumatic valve connected between the nitrogen storage grid and the hydrogen supply module.

8. The compressor hydrogen environment test apparatus of claim 7, wherein, The test device further comprises a plurality of PLC controllers connected with the first pneumatic valve, the second pneumatic valve, the third pneumatic valve, the plurality of pressure transmitters and the plurality of safety valves respectively.

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