A test device for deep sea gas generator and its use method

Abstract

The present invention relates to a test device for a deep-sea gas generator and a method for using the test device, comprising a gas generator working chamber, a gas generator, a gas delivery pipeline, a gas collecting chamber, a water injection pump, an air compressor, etc. The gas generator is placed inside the gas generator working chamber and is connected to the gas collecting chamber through the gas delivery pipeline. The gas collecting chamber is divided into a rod chamber and a rodless chamber by a built-in piston. The rodless chamber can be pressurized by water to achieve a "wet" test environment according to test requirements, or can be filled with high-pressure air only to achieve a "dry" test environment. The device can simulate a high-pressure seawater environment and keep the internal pressure of the device relatively constant during the gas generation process, and has two gas dry and wet test environments, meeting the test requirements for measuring data such as gas production, gas production speed, and gas temperature of gas generating devices such as gas generators under high-pressure environments, and has the advantages of simple structure, convenient operation, low cost, etc.

Description

Technical Field

[0001] The invention relates to the technical field of test devices under high pressure environments, and in particular to a test device for a deep-sea gas generator and a use method thereof. Background Art

[0002] The test of gas generating devices (including fuel gas generators and hydrazine decomposition gas generating devices, etc., taking fuel gas generators as an example here) under high-pressure seawater environment (including verification of indicators such as gas production volume, gas production speed, and temperature) has always been a difficult problem. At present, there are two main ways in theory. One is to carry out in a real high-pressure seawater environment, which has obvious disadvantages of inconvenience and high cost; the other is to test in a pressure cylinder in the laboratory. Since a large amount of high-temperature gas is generated after the gas generator is turned on, and the traditional pressure cylinder does not have the function of timely exhaust and pressure relief, the pressure in the pressure cylinder will continue to increase during the test, which is inconsistent with the actual constant pressure environment, and has the possibility of damaging the pressure cylinder or even causing safety accidents.

[0003] The main purpose of the gas generator underwater is to blow off the ballast water tank or inflate the airbag to provide positive buoyancy. The working environment of the gas in the two uses of the gas generator to blow off the ballast water tank and to inflate the airbag is different. In the former, the gas blows off the seawater and directly contacts the seawater, which is a wet environment; in the latter, the gas is stored in the airbag to overcome the external seawater to do work to expand the airbag, and the gas does not directly contact the seawater, which is a dry environment. For the above two uses, in order to ensure the consistency of the test environment and the actual environment, the test device should take into account both dry and wet use environments. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned existing production technologies, the applicant provides a test device for deep-sea gas generators and a method of using the same, which can simulate a high-pressure seawater environment and keep the internal pressure of the device relatively constant during the gas generation process. It also has two test environments for gas, dry and wet, which meet the test requirements for measuring data such as gas production, gas production speed, and gas temperature of gas generating devices such as gas generators under high-pressure environments, and has the advantages of simple structure, easy operation, and low cost.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A test device for a deep-sea gas generator, comprising a gas generator working chamber and a gas collecting chamber arranged in parallel, wherein a gas generator is installed inside the gas generator working chamber, a gas delivery pipeline is installed at the gas production port of the gas generator, the gas delivery pipeline is connected with the gas collecting chamber after passing through the gas generator working chamber, and a throttling ring is installed on the gas delivery pipeline; a working chamber water injection port and a working chamber air charging port are arranged on the top surface of the gas generator working chamber, the working chamber water injection port is connected to a No. 1 water injection pump through a pipeline, and the working chamber air charging port is connected to a No. 1 air compressor through a pipeline;

[0007] The top surface of the gas collection chamber is provided with a collection chamber water injection port and a collection chamber air charging port, the collection chamber water injection port is connected to a No. 2 water injection pump through a pipeline, and the bottom surface of the gas collection chamber is also provided with a collection chamber bottom cover air charging port, and a No. 2 air compressor is installed between the collection chamber air charging port and the collection chamber bottom cover air charging port through a pipeline;

[0008] A piston is installed inside the gas collection chamber through a piston sealing ring, a piston rod is arranged in the middle of the piston, a scale value is arranged on the piston rod, and the piston rod extends out of the bottom of the gas collection chamber; the piston divides the inside of the gas collection chamber into a rod chamber and a rodless chamber, the rod chamber is filled with high-pressure air to make the pressure in the rod chamber consistent with the seawater environment pressure, and the rodless chamber is filled with water and pressurized according to the test requirements to realize a wet test environment, or filled with high-pressure air to realize a dry test environment.

[0009] Its further technical solution is:

[0010] The working chamber of the gas generator adopts a split structure.

[0011] The working chamber of the gas generator is assembled by a working chamber wall and a working chamber bottom cover. The gas generator is installed on the working chamber bottom cover. The working chamber pressure sensor and the working chamber temperature sensor are installed on the working chamber bottom covers located on both sides of the gas generator.

[0012] The working chamber wall and the working chamber bottom cover are sealed and connected via a working chamber bottom cover sealing ring.

[0013] The gas collecting chamber adopts a split structure.

[0014] The gas collecting chamber is assembled by a collecting chamber wall and a collecting chamber bottom cover, and a pressure relief valve is installed on the collecting chamber bottom cover.

[0015] The collecting chamber wall and the collecting chamber bottom cover are sealed and connected via a collecting chamber bottom cover sealing ring, and the piston rod and the collecting chamber bottom cover are connected via a piston rod sealing ring.

[0016] A collecting chamber pressure sensor and a collecting chamber temperature sensor are installed on the top surface of the collecting chamber wall.

[0017] A method for using a test device for a deep-sea gas generator comprises the following steps:

[0018] S1: Assembly preparation stage, all required parts are prepared and assembled;

[0019] S2: pressure environment establishment stage, including the pressure environment establishment of the working chamber and the collection chamber;

[0020] S2.1: Establishment of working chamber pressure environment: Fill the working chamber of the gas generator with water through the No. 1 water injection pump, and use the No. 1 air compressor to pressurize the working chamber of the gas generator until the pressure reaches the test requirement value of 10MPa. At this time, the high-pressure water environment in the working chamber is established;

[0021] S2.2: For the gas generator used to inflate the airbag, the corresponding gas collection chamber should be a dry environment, and high-pressure air should be injected into the rod chamber and the rodless chamber of the gas collection chamber simultaneously to make the pressure in the chamber 10MPa; for the gas generator used to blow out the ballast water tank, the corresponding gas collection chamber should be a wet environment, and the rodless chamber of the gas collection chamber should be filled with water first, and then the No. 2 air compressor should be used to pressurize the rod chamber with high-pressure air to move the piston upward until the pressure in the gas collection chamber reaches 10MPa;

[0022] S3: During the gas production test phase, the gas generator is started, and the high-temperature gas enters the rodless cavity of the gas collection cavity through the gas transmission pipeline. In a dry environment, the gas gathers in the rodless cavity, and the increased pressure pushes the piston downward; in a wet environment, the gas blows away the water in the rodless cavity, pushing the piston downward;

[0023] S4: Data recording stage. For the dry collection environment, the real-time displacement and the corresponding time are recorded by the scale value during the test. When the gas generator has a gunpowder volume of 1kg and the gas production is completed, the overall recording time is 3s, the maximum displacement of the piston is 0.3m, and the cross-sectional area of ​​the piston is 0.05㎡. Therefore, the maximum gas production volume Q1 of the gas generator in the water environment with a pressure value of 10MPa is 0.3m×0.05㎡, totaling 15L. The gas expansion caused by the high-temperature gas in the dry environment makes the gas volume reach a peak at this moment. After the gas is cooled and stabilized, high-pressure air is added to the rod cavity through the No. 2 air compressor 7 until the pressure in the collection cavity returns to 10MPa. The displacement of the piston relative to the initial position at this moment is recorded as 0.24m. Therefore, the gas production volume Q2 of the gas generator after stable operation in the water environment with a pressure value of 10MPa is 0.24m×0.05㎡, totaling 12L. The average gas production rate of the gas generator is 12L / 3s=4L / s. The temperature is recorded by the working cavity temperature sensor and the collection cavity temperature sensor during the whole process. Changes; for the wet collection environment, the real-time displacement and the corresponding time are recorded by the scale value during the test. When the gas generator produces 1kg of gunpowder and the gas production is completed, the overall time consumption is recorded as 3s, the maximum displacement of the piston is 0.32m, and the cross-sectional area of ​​the piston is 0.05㎡. Therefore, the maximum gas production volume Q1 of the gas generator in a water environment with a pressure value of 10MPa is 0.32m×0.05㎡, totaling 16L. Due to the expansion of gas and the action of water vapor in the wet environment, the gas volume reaches a peak at this moment. After the gas is cooled and stabilized, high-pressure air is added to the rod cavity through the No. 2 air compressor until the pressure in the collection cavity returns to 10MPa. The displacement of the piston relative to the initial position at this moment is recorded as 0.24m. Therefore, the gas production volume Q2 of the gas generator after working stably in a water environment with a pressure value of 10MPa is 0.24m×0.05㎡, totaling 12L, and the average gas production rate of the gas generator is 12L / 3s=4L / s. The temperature changes are recorded by the working cavity temperature sensor and the collection cavity temperature sensor during the whole process.

[0024] The beneficial effects of the present invention are as follows:

[0025] The present invention has a compact and reasonable structure and is easy to operate. Through the cooperation of the gas generator, the gas transmission pipeline, the gas collecting chamber, the water injection pump, the air compressor and other components, the gas generator is placed inside the working chamber of the gas generator and is connected to the gas collecting chamber through the gas transmission pipeline. The gas collecting chamber is divided into a rod chamber and a rodless chamber by a built-in piston. The rodless chamber can be pressurized with water to achieve a "wet" test environment according to test requirements, or it can be only filled with high-pressure air to achieve a "dry" test environment. The device can simulate a high-pressure seawater environment and keep the internal pressure of the device relatively constant during the gas generation process. It has two gas dry and wet test environments, which meet the test requirements of measuring data such as gas production, gas production speed, and gas temperature of gas generating devices such as gas generators under high-pressure environments, and has the advantages of simple structure, easy operation, low cost and the like.

[0026] At the same time, the present invention also has the following advantages:

[0027] (1) The present invention can simulate a high-pressure seawater environment and keep the internal pressure of the device relatively constant during the gas generation process. There is no need to spend a lot of money to conduct real offshore environment tests or transform traditional pressure cylinders. The structure is simple and the operation is convenient.

[0028] (2) The present invention can provide a dry or wet collection environment for gas generators of different uses and has strong versatility.

[0029] (3) The present invention can record the gas production and temperature values ​​at each moment during the test in real time, which provides convenience for the study of the gas production process of the gas generator under a high-pressure water environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the test device of the present invention.

[0031] Figure 2 It is a schematic diagram of the pressure establishment state of the present invention in a dry test environment.

[0032] Figure 3 It is a schematic diagram of the pressure establishment state of the present invention in a wet test environment.

[0033] Figure 4 This is a schematic diagram of the present invention at the end of the test in a dry test environment.

[0034] Figure 5 This is a schematic diagram of the present invention at the end of the test in a wet test environment.

[0035] Among them: 1. Gas generator working chamber; 2. Gas generator; 3. Gas transmission pipeline; 4. Gas collection chamber; 5. No. 1 water injection pump; 6. No. 1 air compressor; 7. No. 2 air compressor; 8. No. 2 water injection pump;

[0036] 101, working chamber wall; 102, working chamber bottom cover; 103, working chamber pressure sensor; 104, working chamber temperature sensor; 105, working chamber bottom cover sealing ring; 106, working chamber water injection port; 107, working chamber air filling port;

[0037] 301, throttle ring;

[0038] 401, collecting chamber wall; 402, collecting chamber bottom cover; 403, piston; 404, piston sealing ring; 405, piston rod; 406, scale value; 407, collecting chamber bottom cover inflation port; 408, collecting chamber bottom cover sealing ring; 409, piston rod sealing ring; 410, pressure relief valve; 411, collecting chamber pressure sensor; 412, collecting chamber temperature sensor; 413, collecting chamber water injection port; 414, collecting chamber inflation port. DETAILED DESCRIPTION

[0039] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0040] like Figure 1-Figure 5 As shown, the test device for deep-sea gas generators of this embodiment comprises a gas generator working chamber 1 and a gas collecting chamber 4 arranged in parallel, a gas generator 2 is installed inside the gas generator working chamber 1, a gas delivery pipeline 3 is installed at the gas production port of the gas generator 2, the gas delivery pipeline 3 is connected with the gas collecting chamber 4 after passing through the gas generator working chamber 1, and a throttling ring 301 is installed on the gas delivery pipeline 3; a working chamber water injection port 106 and a working chamber air charging port 107 are arranged on the top surface of the gas generator working chamber 1, the working chamber water injection port 106 is connected to a No. 1 water injection pump 5 through a pipeline, and the working chamber air charging port 107 is connected to a No. 1 air compressor 6 through a pipeline;

[0041] The top surface of the gas collecting chamber 4 is provided with a collecting chamber water injection port 413 and a collecting chamber air charging port 414, the collecting chamber water injection port 413 is connected to the No. 2 water injection pump 8 through a pipeline, and the bottom surface of the gas collecting chamber 4 is also provided with a collecting chamber bottom cover air charging port 407, and the No. 2 air compressor 7 is installed between the collecting chamber air charging port 414 and the collecting chamber bottom cover air charging port 407 through a pipeline;

[0042] A piston 403 is installed inside the gas collecting chamber 4 through a piston sealing ring 404. A piston rod 405 is arranged in the middle of the piston 403. A scale value 406 is arranged on the piston rod 405. The piston rod 405 extends out of the bottom of the gas collecting chamber 4. The piston 403 divides the interior of the gas collecting chamber 4 into a rod chamber and a rodless chamber. The rod chamber is filled with high-pressure air to make the pressure in the rod chamber consistent with the seawater environment pressure. The rodless chamber is filled with water and pressurized according to the test requirements to realize a wet test environment, or is filled with high-pressure air to realize a dry test environment.

[0043] The working chamber 1 of the gas generator adopts a split structure.

[0044] The gas generator working chamber 1 is assembled by a working chamber wall 101 and a working chamber bottom cover 102 , on which the gas generator 2 is mounted, and on the working chamber bottom cover 102 located on both sides of the gas generator 2 are mounted a working chamber pressure sensor 103 and a working chamber temperature sensor 104 .

[0045] The working chamber wall 101 and the working chamber bottom cover 102 are sealed and connected via a working chamber bottom cover sealing ring 105 .

[0046] The gas collecting chamber 4 adopts a split structure.

[0047] The gas collecting chamber 4 is assembled by a collecting chamber wall 401 and a collecting chamber bottom cover 402 , and a pressure relief valve 410 is installed on the collecting chamber bottom cover 402 .

[0048] The collecting chamber wall 401 and the collecting chamber bottom cover 402 are sealed and connected via a collecting chamber bottom cover sealing ring 408 , and the piston rod 405 and the collecting chamber bottom cover 402 are connected via a piston rod sealing ring 409 .

[0049] A collecting chamber pressure sensor 411 and a collecting chamber temperature sensor 412 are installed on the top surface of the collecting chamber wall 401 .

[0050] The specific structure and function of the test device for deep-sea gas generator described in the present invention are as follows:

[0051] It mainly includes a gas generator working chamber 1, a gas generator 2, a gas transmission pipeline 3, a gas collecting chamber 4, a No. 1 water injection pump 5, a No. 1 air compressor 6, a No. 2 air compressor 7, and a No. 2 water injection pump 8.

[0052] Among them, the gas generator 2 is placed inside the gas generator working chamber 1, and is connected to the gas collecting chamber 4 through the gas delivery pipeline 3 passing through the top wall of the gas generator working chamber 1 for gas delivery. The No. 1 water injection pump 5 and the No. 1 air compressor 6 are used to inject water and pressurize the working chamber 1 to create a high-pressure seawater environment. The No. 2 air compressor 7 and the No. 2 water injection pump 8 are used to inject water and pressurize the collecting chamber 4 to create a high-pressure gas and high-pressure seawater environment.

[0053] The gas generator working chamber 1 provides a high-pressure seawater environment for the gas generator 2 .

[0054] The structure of the working chamber 1 of the gas generator is as follows: it includes a working chamber wall 101, a working chamber bottom cover 102, and a working chamber bottom cover sealing ring 105; a working chamber pressure sensor 103 and a working chamber temperature sensor 104 are provided inside, which are used to monitor the pressure and temperature in the working chamber in real time; a working chamber water injection port 106 and a working chamber air charging port 107 are provided inside, which are connected to the No. 1 water injection pump 5 and the No. 1 air compressor 6 respectively, as the inlet of water and gas.

[0055] The gas delivery pipeline 3 is used to connect the gas production port of the gas generator 2 and the gas collection chamber 4. A throttling ring 301 is provided on the pipeline to control the inner diameter of the pipeline, so as to simulate the influence of different pipeline inner diameters on the blowing rate.

[0056] The gas collection chamber 4 is used to collect high-temperature and high-pressure gas.

[0057] The structure of the gas collecting chamber 4 is as follows: it includes a collecting chamber wall 401, a collecting chamber bottom cover 402, and a collecting chamber bottom cover sealing ring 408, and is provided with a piston 403, a piston sealing ring 404, and a piston rod 405. The piston 403 divides the collecting chamber wall 401 into a rod chamber and a rodless chamber. The rod chamber is filled with high-pressure air to make its pressure consistent with the seawater environment pressure. The rodless chamber can be filled with water and pressurized to achieve a "wet" test environment according to test requirements, or it can be only filled with high-pressure air to achieve a "dry" test environment. A scale value 406 is marked on the piston rod to record the real-time displacement of the piston; the collecting chamber bottom cover inflation port 407 and the collecting chamber inflation port 414 are respectively the gas injection ports of the rod chamber and the rodless chamber, the collecting chamber water injection port 413 is the rodless chamber water injection port, the pressure relief valve 410 is used to exhaust and relieve pressure to the outside when the air pressure in the rod chamber increases, so as to maintain a constant pressure in the chamber, and the collecting chamber pressure sensor 411 and the collecting chamber temperature sensor 412 are used to monitor the pressure and temperature in the collecting chamber in real time.

[0058] During the test preparation stage, the gas generator 2, the working chamber pressure sensor 103, and the working chamber temperature sensor 104 are installed on the working chamber bottom cover 102, and the working chamber bottom cover 102 is assembled with the working chamber wall 101. The gas generator 2 is connected with the gas collecting chamber 4 through the gas delivery pipeline 3. The piston 403 and its kit are installed in the gas collecting chamber 4, and the pressure relief valve 410, the collecting chamber pressure sensor 411, and the collecting chamber temperature sensor 412 are installed. The No. 1 water injection pump 5, the No. 1 air compressor 6, the No. 2 air compressor 7, and the No. 2 water injection pump 8 are connected to the corresponding interfaces respectively. Figure 1 .

[0059] During the test phase, the No. 1 water injection pump 5 is used to fill the working chamber 1 of the gas generator with water, and the No. 1 air compressor 6 is used to pressurize the working chamber 1 of the gas generator until the pressure reaches the test requirement value P. At this time, the high-pressure water environment in the working chamber is established.

[0060] For the gas generator 2 for inflating the airbag, the gas collection chamber of the test device should be a dry environment. Therefore, it is only necessary to simultaneously inject high-pressure air into the rod chamber and the rodless chamber of the gas collection chamber 4 so that the pressure value in the chamber is also P, such as Figure 2 As shown; for the gas generator 2 used to blow off the ballast water tank, the gas collection chamber of the test device should be a wet environment, so it is necessary to first fill the rodless chamber of the gas collection chamber 4 with water, and then use the No. 2 air compressor 7 to pressurize the rod chamber with high-pressure air to move the piston 403 upward until the pressure in the gas collection chamber is P, as shown in FIG. Figure 3 shown.

[0061] Start the gas generator 2, and the high-temperature gas enters the rodless chamber of the gas collecting chamber 4 through the gas delivery pipeline 3. In the dry environment, the gas gathers in the rodless chamber, and the pressure increases, pushing the piston 403 downward. Figure 4 In a wet environment, the gas blows away the water in the rodless cavity, pushing the piston 403 downward, as shown. Figure 5 As shown. During the movement of the piston, the volume of the rod chamber decreases and the air pressure increases. During this process, the pressure relief valve 410 opens to release the air and pressure to the outside, so that the pressure in the collection chamber 4 is dynamically maintained at P. During the test, the real-time displacement and the corresponding time are recorded by the piston rod scale value 406. When the gas generator 2 finishes producing gas, the overall time is recorded as t, and the maximum displacement of the piston is h1. The product of h1 and the piston cross-sectional area S is the maximum gas production volume Q1 of the gas generator 2 in the water environment with a pressure value of P. The dry environment is caused by the gas expansion caused by the high-temperature gas, and the wet environment is caused by Due to the expansion of gas and the action of water vapor, the gas volume reaches a peak at this moment. After the gas is cooled and stabilized, high-pressure air is added to the rod chamber through the No. 2 air compressor 7 until the pressure in the collecting chamber recovers to the value P. The displacement h2 of the piston relative to the initial position is recorded at this moment. The product of h2 and the cross-sectional area S of the piston is the gas production Q2 of the gas generator after it stabilizes in the water environment with a pressure value of P. Q2 / t is the average gas production rate of the gas generator. The temperature changes are recorded through the working chamber temperature sensor 104 and the collecting chamber temperature sensor 412 during the whole process.

[0062] The use process of the present invention is divided into four parts: assembly preparation, pressure environment establishment, gas production test, and data recording.

[0063] (I) Assembly preparation stage: the gas generator 2, the working chamber pressure sensor 103, and the working chamber temperature sensor 104 are installed on the working chamber bottom cover 102. The working chamber bottom cover 102 and the working chamber wall 101 are assembled. The gas generator 2 is connected with the gas collection chamber 4 through the gas delivery pipeline 3. The piston 403 and its kit are installed in the gas collection chamber 4, and the pressure relief valve 410, the collection chamber pressure sensor 411, and the collection chamber temperature sensor 412 are installed. The No. 1 water injection pump 5, the No. 1 air compressor 6, the No. 2 air compressor 7, and the No. 2 water injection pump 8 are connected to the corresponding interfaces respectively. Figure 1 shown.

[0064] (ii) The pressure environment establishment stage includes the establishment of the pressure environment of the working chamber and the collecting chamber. The first is the establishment of the working chamber pressure environment: the No. 1 water injection pump 5 is used to fill the working chamber 1 of the gas generator with water, and the No. 1 air compressor 6 is used to pressurize the working chamber 1 of the gas generator until the pressure reaches the test requirement of 10MPa. At this time, the high-pressure water environment in the working chamber is established; the second is the establishment of the collecting chamber pressure environment: for the gas generator used to inflate the airbag, the gas collecting chamber of the test device should be a dry environment. Therefore, it is only necessary to simultaneously inject high-pressure air into the rod chamber and the rodless chamber of the gas collecting chamber 4 so that the pressure value in the cavity is also 10MPa, such as Figure 2 As shown; for the gas generator 2 used to blow off the ballast water tank, the gas collection chamber 4 of the test device should be a wet environment, so it is necessary to first fill the rodless chamber of the gas collection chamber 4 with water, and then use the No. 2 air compressor 7 to pressurize the rod chamber with high-pressure air to move the piston 403 upward until the pressure in the gas collection chamber 4 is 10MPa, as shown in FIG. Figure 3 shown.

[0065] (III) During the gas production test phase, the gas generator 2 is started, and the high-temperature gas enters the rodless cavity of the gas collecting cavity 4 through the gas delivery pipeline 3. Under the dry environment, the gas gathers in the rodless cavity, and the pressure increases, pushing the piston 403 downward. Figure 4 In a wet environment, the gas blows away the water in the rodless cavity, pushing the piston 403 downward. Figure 5 Since the volume of the rod chamber decreases and the air pressure increases during the movement of the piston, the pressure relief valve 410 opens during this process to exhaust air and release pressure to the outside, so that the pressure in the gas collection chamber 4 is dynamically maintained at 10 MPa, which is consistent with the actual working environment.

[0066] (IV) Data recording stage: for dry collection environment, the real-time displacement and corresponding time are recorded by the piston rod scale value 406 during the test. When the gas generator 2 with a gunpowder amount of 1 kg finishes producing gas, the overall recording time is 3 s, the maximum displacement of the piston is 0.3 m, and the cross-sectional area of ​​the piston is 0.05 m2. Therefore, the maximum gas production volume Q1 of the gas generator 2 in the water environment with a pressure value of 10 MPa is 0.3 m × 0.05 m2, totaling 15 L. In the dry environment, the gas volume reaches a peak at this moment due to the expansion of the gas caused by the high temperature gas. After the gas is cooled and stabilized, high-pressure air is added to the rod cavity through the No. 2 air compressor 7 until the pressure in the collecting cavity is restored to 10MPa. The displacement of the piston relative to the initial position at this moment is recorded as 0.24m. Therefore, the gas production Q2 of the gas generator 2 after stable operation in a water environment with a pressure value of 10MPa is 0.24m×0.05㎡, totaling 12L. The average gas production speed of the gas generator 2 is 12L / 3s=4L / s. The temperature changes during the whole process are recorded by the working cavity temperature sensor 104 and the collecting cavity temperature sensor 412, as shown in FIG. Figure 4As shown; for the wet collection environment, the real-time displacement and the corresponding time are recorded by the piston rod scale value 406 during the test. When the gas generator gunpowder amount 1kg gas production is completed, the overall recording time is 3s, the maximum displacement of the piston is 0.32m, and the piston cross-sectional area is 0.05㎡. Therefore, the maximum gas production volume Q1 of the gas generator 2 in the water environment with a pressure value of 10MPa is 0.32m×0.05㎡, totaling 16L. In the wet environment, due to the expansion of gas and the action of water vapor, the gas volume reaches a peak at this moment. When the gas is cooled, After cooling and stabilization, high-pressure air is added to the rod cavity through the No. 2 air compressor 7 until the pressure in the collecting cavity returns to 10MPa. The displacement of the piston relative to the initial position at this moment is recorded as 0.24m. Therefore, the gas production Q2 of the gas generator 2 after working stably in a water environment with a pressure value of 10MPa is 0.24m×0.05㎡, totaling 12L. The average gas production speed of the gas generator 2 is 12L / 3s=4L / s. The temperature changes during the whole process are recorded by the working cavity temperature sensor 104 and the collecting cavity temperature sensor 412, as shown in FIG. Figure 5 shown.

[0067] The present invention can simulate high-pressure seawater environment, has two types of gas collection environments, dry and wet, and keeps the internal pressure of the device relatively constant during the gas generation process. The diameter of the gas transmission pipeline can be controlled by the throttling ring 301, which is convenient for studying the influence of different pipe diameters on the blowing rate. There is no need to spend a lot of money to conduct real environmental tests at sea or to transform traditional pressure cylinders. The structure is simple and the operation is convenient.

[0068] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A test device for deep sea gas generator, Features: The invention comprises a gas generator working chamber (1) and a gas collecting chamber (4) arranged in parallel, wherein a gas generator (2) is installed inside the gas generator working chamber (1), a gas delivery pipeline (3) is installed at the gas production port of the gas generator (2), the gas delivery pipeline (3) passes through the gas generator working chamber (1) and communicates with the gas collecting chamber (4), and a throttling ring (301) is installed on the gas delivery pipeline (3); a working chamber water injection port (106) and a working chamber air charging port (107) are arranged on the top surface of the gas generator working chamber (1), the working chamber water injection port (106) is connected to a first water injection pump (5) through a pipeline, and the working chamber air charging port (107) is connected to a first air compressor (6) through a pipeline; The top surface of the gas collection chamber (4) is provided with a collection chamber water injection port (413) and a collection chamber air charging port (414); the collection chamber water injection port (413) is connected to a second water injection pump (8) via a pipeline; the bottom surface of the gas collection chamber (4) is also provided with a collection chamber bottom cover air charging port (407); a second air compressor (7) is installed between the collection chamber air charging port (414) and the collection chamber bottom cover air charging port (407) via a pipeline; A piston (403) is installed inside the gas collection chamber (4) via a piston sealing ring (404); a piston rod (405) is arranged in the middle of the piston (403); a scale value (406) is arranged on the piston rod (405); the piston rod (405) extends out of the bottom of the gas collection chamber (4); the piston (403) divides the inside of the gas collection chamber (4) into a rod chamber and a rodless chamber; the rod chamber is filled with high-pressure air so that the pressure in the rod chamber is consistent with the seawater environment pressure; the rodless chamber is filled with water and pressurized according to test requirements to realize a wet test environment, or filled with high-pressure air to realize a dry test environment.

2. A test device for a deep sea gas generator as claimed in claim 1, Features: The working chamber (1) of the gas generator adopts a split structure.

3. A test device for a deep sea gas generator as claimed in claim 2, Features: The working chamber (1) of the gas generator is assembled by a working chamber wall (101) and a working chamber bottom cover (102); the gas generator (2) is mounted on the working chamber bottom cover (102); and a working chamber pressure sensor (103) and a working chamber temperature sensor (104) are mounted on the working chamber bottom cover (102) located on both sides of the gas generator (2).

4. A test device for a deep sea gas generator as claimed in claim 3, Features: The working chamber wall (101) and the working chamber bottom cover (102) are sealed and connected via a working chamber bottom cover sealing ring (105).

5. A test device for a deep sea gas generator as claimed in claim 4, Features: The gas collecting chamber (4) adopts a split structure.

6. A test device for a deep sea gas generator as claimed in claim 5, Features: The gas collection chamber (4) is assembled by a collection chamber wall (401) and a collection chamber bottom cover (402), and a pressure relief valve (410) is installed on the collection chamber bottom cover (402).

7. A test device for a deep sea gas generator as claimed in claim 6, Features: The collection chamber wall (401) and the collection chamber bottom cover (402) are sealedly connected via a collection chamber bottom cover sealing ring (408), and the piston rod (405) and the collection chamber bottom cover (402) are connected via a piston rod sealing ring (409).

8. A test device for a deep sea gas generator as claimed in claim 7, Features: A collecting chamber pressure sensor (411) and a collecting chamber temperature sensor (412) are installed on the top surface of the collecting chamber wall (401).

9. A method for using the test device for deep-sea gas generator according to claim 8, Features: The steps are as follows: S1: Assembly preparation stage, all required parts are prepared and assembled; S2: pressure environment establishment stage, including the pressure environment establishment of the working chamber and the collection chamber; S2.1: Establishment of the working chamber pressure environment. Fill the working chamber (1) of the gas generator with water through the No. 1 water injection pump (5). Use the No. 1 air compressor (6) to pressurize the working chamber (1) of the gas generator until the pressure reaches the test requirement value of 10 MPa. At this time, the high-pressure water environment in the working chamber is established. S2.2: For the gas generator (2) used to inflate the airbag, the corresponding gas collection chamber (4) should be a dry environment, and high-pressure air is injected into the rod chamber and the rodless chamber of the gas collection chamber (4) simultaneously to make the pressure in the chamber 10MPa; for the gas generator (2) used to blow out the ballast water tank, the corresponding gas collection chamber (4) should be a wet environment, and the rodless chamber of the gas collection chamber (4) is first filled with water, and then the high-pressure air is pressed into the rod chamber through the No. 2 air compressor (7) to make the piston (403) move upward until the pressure in the gas collection chamber reaches 10MPa; S3: During the gas production test phase, the gas generator (2) is started, and the high-temperature gas enters the rodless chamber of the gas collection chamber (4) through the gas delivery pipeline (3). In a dry environment, the gas is collected in the rodless chamber, and the increased pressure pushes the piston (403) downward. In a wet environment, the gas blows away the water in the rodless chamber, pushing the piston (403) downward. S4: Data recording stage. For the dry collection environment, the real-time displacement and the corresponding time are recorded by the scale value (406) during the test. When the gas generator (2) produces 1 kg of gunpowder, the overall recording time is 3 seconds. The maximum displacement of the piston (403) is 0.3 m, and the cross-sectional area of ​​the piston (403) is 0.05 m2. Therefore, the maximum gas production volume Q1 of the gas generator (2) in the water environment with a pressure value of 10 MPa is 0.3 m×0.05 m2, totaling 15 L. In the dry environment, the gas expansion caused by the high temperature gas makes the gas volume reach At the peak, after the gas is cooled and stabilized, high-pressure air is added to the rod chamber through the No. 2 air compressor 7 until the pressure in the collecting chamber returns to 10 MPa. At this moment, the displacement of the piston (403) relative to the initial position is recorded as 0.24 m. Therefore, the gas production volume Q2 of the gas generator (2) after stable operation in a water environment with a pressure value of 10 MPa is 0.24 m×0.05 m2, a total of 12 L. The average gas production rate of the gas generator (2) is 12 L / 3 s=4 L / s. The temperature is recorded by the working chamber temperature sensor (104) and the collecting chamber temperature sensor (412) during the whole process. Changes; for the wet collection environment, the real-time displacement and the corresponding time are recorded by the scale value (406) during the test. When the gas generator gunpowder amount 1kg gas production is completed, the overall recording time is 3s, the maximum displacement of the piston (403) is 0.32m, and the cross-sectional area of ​​the piston (403) is 0.05㎡. Therefore, the maximum gas production volume Q1 of the gas generator (2) in the water environment with a pressure value of 10MPa is 0.32m×0.05㎡, totaling 16L. In the wet environment, due to the expansion of gas and the action of water vapor, the gas volume reaches a peak at this moment. When the gas is cooled, After cooling and stabilization, high-pressure air is added to the rod chamber through the No. 2 air compressor (7) until the pressure in the collecting chamber returns to 10 MPa. The displacement of the piston (403) relative to the initial position at this moment is recorded as 0.24 m. Therefore, the gas production Q2 of the gas generator (2) after stable operation in a water environment with a pressure value of 10 MPa is 0.24 m×0.05 m2, totaling 12 L. The average gas production rate of the gas generator (2) is 12 L / 3 s=4 L / s. During the whole process, the temperature changes are recorded by the working chamber temperature sensor (104) and the collecting chamber temperature sensor (412).

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