CN217403753U - Ultra-low temperature vibration comprehensive test system for liquid rocket parts - Google Patents

Abstract

The utility model provides a liquid rocket spare part ultra-low temperature vibration combined test system, include: a cryogenic medium storage system and a vibration loading system; the low-temperature medium storage system comprises a low-temperature storage tank, a low-temperature medium storage unit and a low-temperature medium storage unit, wherein the low-temperature medium storage system is used for storing a low-temperature medium; the outlet of the low-temperature storage tank is connected with a tested piece through a low-temperature filling pipe, and the low-temperature filling pipe is provided with a first low-temperature stop valve so as to control the low-temperature storage tank to convey a low-temperature medium to the tested piece; the vibration loading system comprises a vibration table and a vibration tool; and the tested piece is arranged on the vibration table through the vibration tool so as to carry out vibration test on the tested piece. The comprehensive test system can meet the requirements of a vibration test and an ultralow temperature medium test for liquid rocket parts at the same time.

Description

Ultra-low temperature vibration comprehensive test system for liquid rocket parts

Technical Field

The utility model relates to a liquid rocket spare part test field, concretely relates to liquid rocket spare part ultra-low temperature vibration combined test system.

Background

With the rapid development of the aerospace field, the normal temperature, high pressure and ultralow temperature vibration test is more and more widely used. At present, an ultralow temperature vibration test system for research tests is lacked in China, and test and examination can be only carried out in a normal temperature vibration environment. And the test system can only carry out the vibration test in single environment, and its test environment can not satisfy a large amount of test demands of passing through media such as ultra-low temperature medium (such as liquid nitrogen), compressed air, nitrogen gas, helium to the test piece simultaneously. In addition, the current computer interface for controlling the vibration table can only display an acceleration control curve, and if the pressure value and the temperature value are required to be displayed, an additional measuring system is required to be added.

In order to meet the requirements of a vibration test and an ultralow temperature medium test for liquid rocket parts at the same time, it is important to design an ultralow temperature vibration comprehensive test system for the liquid rocket parts.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a liquid rocket spare part ultra-low temperature vibration combined test system.

The utility model provides a liquid rocket spare part ultra-low temperature vibration combined test system, include: a cryogenic medium storage system and a vibration loading system; the low-temperature medium storage system comprises a low-temperature storage tank, a high-temperature storage tank and a low-temperature medium storage tank, wherein the low-temperature storage tank is used for storing a low-temperature medium; the outlet of the low-temperature storage tank is connected with a tested piece through a low-temperature filling pipe, and the low-temperature filling pipe is provided with a first low-temperature stop valve so as to control the low-temperature storage tank to convey a low-temperature medium to the tested piece; the vibration loading system comprises a vibration table and a vibration tool; and the tested piece is arranged on the vibration table through the vibration tool so as to carry out vibration test on the tested piece.

According to the utility model discloses an embodiment still includes through first lateral conduit and the gas distribution system who is connected by the test piece, first lateral conduit is equipped with first booster valve, is used for control gas distribution system is defeated gas to being tested the piece to the regulation by the pressure of test piece.

According to the utility model discloses an embodiment still includes detecting system, detecting system includes acceleration sensor and first teletransmission pressure sensor, acceleration sensor with first teletransmission pressure sensor is used for measuring acceleration value and the first pressure value by the test piece respectively, and with its transmission extremely vibration loading system's computer shows.

According to an embodiment of the utility model, the device also comprises a measurement and control system; the acceleration sensor and the first remote transmission pressure sensor are further respectively used for transmitting the acceleration value and the first pressure value to the measurement and control system so as to process data.

According to an embodiment of the present invention, the cryogenic medium storage system further comprises a self-pressurization system; the self-pressurization system comprises a first vaporization valve, a second vaporization valve and vaporization equipment; the low-temperature filling pipe is communicated with a self-pressurization inlet of the low-temperature storage tank through a vaporization pipe; the first vaporization valve, the vaporization device and the second vaporization valve are sequentially arranged on the vaporization pipe; the vaporization equipment is used for vaporizing liquid low-temperature medium; the first vaporizing valve is used for controlling the low-temperature medium to be input into the vaporizing device for vaporization; the second vaporization valve is used for controlling the vaporized low-temperature medium to enter the low-temperature storage tank so as to adjust the pressure in the low-temperature storage tank.

According to an embodiment of the present invention, the device further comprises a low temperature working container; the low-temperature filling pipe comprises a first low-temperature filling pipe and a second low-temperature filling pipe; the first low-temperature stop valve is arranged on the first low-temperature filling pipe; the low-temperature storage tank is used for filling a low-temperature medium into the low-temperature working container through the first low-temperature filling pipe, and the volume of the low-temperature working container is smaller than that of the low-temperature storage tank; the low-temperature working container is connected with a tested piece through the second low-temperature filling pipe, and the second low-temperature filling pipe is provided with a second low-temperature stop valve so as to control the low-temperature working container to convey a low-temperature medium to the tested piece; the low-temperature working container adopts a polyurethane foaming technology to carry out cold insulation and heat insulation on a low-temperature medium stored in the low-temperature working container, and the low-temperature storage tank is a low-pressure vacuum heat insulation type storage tank.

According to an embodiment of the present invention, the gas distribution system is connected to the pressurization inlet of the low temperature working vessel through a second branch pipeline;

and the second branch pipeline is provided with a second pressure increasing valve for controlling the gas distribution system to convey gas to the low-temperature working container so as to adjust the pressure in the low-temperature working container.

According to the utility model discloses an embodiment, the low temperature storage tank with low temperature working container includes first teletransmission level gauge and second teletransmission level gauge respectively, be used for measuring respectively and state in the low temperature storage tank first liquid level value of low temperature medium with the second liquid level value of low temperature medium in the low temperature working container, and with its transmission extremely observe and control the system to carry out data processing.

According to an embodiment of the utility model, the device also comprises a waste liquid tank connected with the tested piece through a low-temperature medium discharge pipe; the low-temperature medium discharge pipe is provided with a discharge stop valve to control the low-temperature medium in the tested piece to be discharged to the waste liquid tank; and a remote temperature sensor is arranged between the tested piece and the discharge stop valve and used for measuring the temperature value of the tested piece, transmitting the temperature value to the computer for displaying and transmitting the temperature value to the measurement and control system for data processing.

According to an embodiment of the present invention, the measurement and control system determines whether to send a first pressure increasing command according to the received first pressure value, so as to control the opening or closing of the first pressure increasing valve and adjust the pressure of the tested piece; the measurement and control system judges whether a second pressurization instruction is sent or not according to the received second pressure value so as to control the opening or closing of the second pressurization valve and adjust the pressure in the low-temperature working container; the measurement and control system judges whether a first filling instruction is sent or not according to the received temperature value so as to control the opening or closing of the second low-temperature stop valve and adjust the temperature of the tested piece; the measurement and control system judges whether to send an alarm instruction or not according to the received first liquid level value; and the measurement and control system judges whether to send a second filling instruction according to the received second liquid level value so as to control the opening or closing of the first low-temperature stop valve and adjust the content of the low-temperature medium in the low-temperature working container.

According to the utility model discloses a liquid rocket spare part ultra-low temperature vibration combined test system, through low temperature medium storage system and vibration loading system, can satisfy the experimental demand to the vibration test of liquid rocket spare part, ultra-low temperature medium test and ultra-low temperature vibration simultaneously, has solved current test system and can only carry out the experimental problem of single environment.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is an ultra-low temperature vibration integrated test system for liquid rocket components according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a gas distribution system according to still another embodiment of the present invention;

fig. 3 is a schematic diagram of a measurement and control system according to another embodiment of the present invention.

Description of reference numerals:

1-a low-temperature storage tank; 2-a first remote liquid level meter; 3-a second remote pressure sensor; 4-a first safety valve; 5-a vaporization device; 6-filling valve; 7-a first low temperature stop valve; 8-a first cryogenic filter; 9-a first cryogenic filler pipe; 10-a tested piece; 11-a second remote-transmission liquid level meter; 12-a cryogenic working vessel; 13-a third pressure sensor; 14-a gas distribution system; 15-a second pressure increasing valve; 16-a second safety valve; 17-a first exhaust valve; 18-a second exhaust valve; 19-an evacuation valve; 20-a third low temperature stop valve; 21-a second low temperature stop valve; 22-a second cryogenic filter; 23-a second cryogenic fill pipe; 24-a third cryogenic filter; 25-a fourth remote pressure sensor; 26-a fourth low temperature stop valve; 27-metal hose for low temperature medium; 28-metal hose for gas; 29-an acceleration sensor; 30-acceleration sensor signal line; 31-a computer; 32-a vibration control instrument; 33-a signal converter; 34-a first remote pressure sensor; 35-a remote temperature sensor; 36-a low temperature medium discharge pipe; 37-an off-gas let-down pipe; 38-a waste liquor tank; 39-valve control circuit; 40-a power amplifier; 41-a power distribution cabinet; 42-a cooling system; 43-a cooling water tower; 44-a high pressure oil pump; 45-measurement and control console; 46-gas path main input pipe; 47-gas path filter; 48-gas circuit stop valve; 49-pressure gauge; 50-a gas collecting pipe; 51-outlet shutoff valve; 52-a pressure relief valve; 53-gas circuit pressure gauge; 54-air source air path exhaust valve; 55-control gas collection column; 56-electromagnetic valve box; 57-control gas filter; 58-control gas solenoid valve; 59-a second branch conduit; 60-a first branch conduit; 61-medium pressure gas output path; 62-low pressure gas output path; 63-blowing off the gas circuit; 64-standby gas circuit; 65-vibrating the tool; 66-product control instrument signal cable; 67-product control instrument; 68-a bleed shutoff valve; 69-gas discharge pipeline stop valve; 70-a vibration table; 71-a first pressure increasing valve; 72-a first vaporization valve; 73-a second vaporisation valve; 74-a vaporization tube; 75-evacuation pipe; 76-high pressure gas output path; 77-container pressure-increasing road; 78-gas vent path.

Detailed Description

The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention, for the purpose of illustrating the principles of the invention. Additionally, the components in the drawings are not necessarily to scale. For example, the dimensions of some of the structures or regions in the figures may be exaggerated relative to other structures or regions to help improve understanding of embodiments of the present invention.

The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise stated, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

Furthermore, the terms "comprises," "comprising," "includes," "including," "has," "having" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure or component comprising a list of elements does not include only those elements but may include other mechanical components not expressly listed or inherent to such structure or component. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.

Spatially relative terms such as "below," "… below," "lower," "above," "… above," "upper," and the like are used for convenience in describing the positioning of one element relative to a second element and are intended to encompass different orientations of the device in addition to different orientations than those illustrated in the figures. Further, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, or that there is another element between the two elements. Furthermore, terms such as "first", "second", and the like are also used to describe various elements, regions, sections, etc. and are not intended to be particularly descriptive in an ordinal or sequential sense and should not be interpreted as limiting. Like terms refer to like elements throughout the description.

In describing the present invention, it is possible to use only "rocket," "liquid rocket," "launch vehicle" or "missile" in a certain scenario description, which is for convenience of description only and the content is not limited to the specific words used. In general, rockets of the invention include both launch vehicles for carrying satellites or spacecraft or other detectors, and weapons such as missiles of all types, rocket projectiles, and the like for carrying military loads, and similar products capable of delivering payloads into the air. Those skilled in the art, in interpreting the above specific terms, should not be construed as limiting the vehicle to only one of a launch vehicle or a missile, depending on the specific terms used in describing the scenario, thereby reducing the scope of the present invention.

It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

FIG. 1 is an ultra-low temperature vibration integrated test system for liquid rocket components according to an embodiment of the present invention; fig. 2 is a schematic diagram of a gas distribution system according to still another embodiment of the present invention; fig. 3 is a schematic diagram of a measurement and control system according to another embodiment of the present invention.

As shown in figure 1, the utility model provides a liquid rocket spare part ultra-low temperature vibration combined test system, include: cryogenic medium storage systems and vibration loading systems. Wherein the cryogenic medium storage system comprises a cryogenic tank 1 for storing cryogenic medium. An outlet of the low-temperature storage tank 1 is connected with a tested piece 10 through a low-temperature filling pipe, and the low-temperature filling pipe is provided with a first low-temperature stop valve 7 so as to control the low-temperature storage tank 1 to convey a low-temperature medium to the tested piece 10. The vibration loading system includes a vibration table 70 and a vibration tool 65. The test piece 10 is mounted on the vibration table 70 by the vibration tool 65 to perform a vibration test on the test piece 10.

In particular, with the rapid development of the aerospace technology, the normal temperature, high pressure and ultralow temperature vibration test has wider and wider application. Parts such as a carrier rocket pressurization conveying pipeline, a connector, a rocket valve, an engine valve and the like need to be subjected to normal-temperature and ultralow-temperature acceptance level and identification level vibration examination tests so as to verify whether the design scheme, the manufacturing process and the assembly of the parts meet the use requirements. The test requirements of the market rapidly rise year by year, and the application requirements of the low-temperature and high-pressure gas-coupled vibration environment test technology are more urgent. At present, the test examination of the normal-temperature vibration environment can be performed at home, the test system can only perform the vibration test of a single environment, and the test environment can not meet the test requirements of simultaneously passing ultralow-temperature media (such as liquid nitrogen), compressed air, nitrogen, helium and the like through a test piece.

By using the comprehensive test system provided by the embodiment, the test piece can be subjected to low-temperature medium test or ultralow-temperature medium test assessment. And (3) opening the first low-temperature stop valve, and allowing a low-temperature medium (such as liquid nitrogen) in the storage tank to enter the tested piece through the low-temperature filling pipe, so that the tested piece can be tested and examined under the condition of the ultralow-temperature medium. And closing the first low-temperature stop valve after the ultralow-temperature medium test, and emptying the low-temperature medium in the tested piece. The first low temperature stop valve can adopt a pneumatic valve or a solenoid valve.

In addition, the tested piece is installed on the vibration table through the vibration tool 65 of the comprehensive test system of the embodiment, and normal-temperature single vibration test examination can be performed on the tested piece. Firstly, the power supply of the cooling water tower 43, the power supply of the cooling system 42, the power supply of the high-pressure oil pump 44 and the power supply of the power amplifier 40 in the power distribution cabinet 41 of the vibration loading system are started, the vibration loading system is powered on, the vibration loading system is in a standby state, and various process systems and relevant elements of a vibration test are checked. Secondly, the tested piece is installed on a vibration loading system and connected with various pipelines and the like so as to complete preparation work of the normal-temperature vibration test. Then, the vibration controller 32 and the computer 31 of the vibration loading system are turned on, and the tool weight of the test piece in the normal temperature vibration test is set. And finally, starting a vibration loading system to carry out a normal-temperature vibration test. And after the normal temperature vibration test is finished, closing the gain.

The comprehensive test system provided by the embodiment can also be used for carrying out ultralow-temperature vibration test examination on the tested piece. Firstly, a first low-temperature stop valve is opened, and a low-temperature medium (such as liquid nitrogen) is filled into a tested piece. Then, the gain is started, the vibration loading system is started, and the ultralow temperature vibration test is started. For a specific test process, please refer to the normal temperature vibration test, which is not described herein again.

The comprehensive test system provided by the embodiment can perform ultralow-temperature medium and normal-temperature single vibration test examination on a tested piece, and can also perform ultralow-temperature vibration test examination. The construction input cost and the test cost of the test system can be effectively reduced, and the test efficiency and the system stability are improved.

As shown in fig. 1 and 2, according to an embodiment of the present invention, the comprehensive test system further includes a gas distribution system connected to the tested object through the first branch pipe 60, in addition to the low temperature medium storage system and the vibration loading system, the first branch pipe 60 is provided with a first pressure increasing valve 71 for controlling the gas distribution system to supply gas to the tested object so as to adjust the pressure of the tested object.

Specifically, in the comprehensive test system provided by this embodiment, in the vibration test, the first pressure increasing valve is opened, and the gas distribution system supplies gas to the tested piece to adjust the pressure of the tested piece, so that the performance of the tested piece under different pressure vibration conditions can be tested. And after the test is finished, closing the gain and unloading the pressure of the tested piece. And then closing the gain, the power amplifier, the high-pressure oil pump, the cooling system and the first pressure increasing valve in sequence, detaching the tested piece and the tool, and restoring the comprehensive test system.

In this embodiment, the gas distribution system may further provide pure compressed air, nitrogen or helium, and the type of gas provided by the gas distribution system is not particularly limited in this embodiment. The gas distribution system can also provide system blowing, remove impurities (including low-temperature media) and water vapor in the test system element and the tested piece, and discharge the impurities and the water vapor from the waste gas discharge pipeline 37 by controlling the on-off of the waste gas discharge pipeline stop valve 69. Or after the low-temperature medium related test is finished, ventilating the system to discharge the low-temperature medium in the test system and the tested piece.

As shown in fig. 1, according to an embodiment of the present invention, the integrated test system further includes a detection system in addition to the low temperature medium storage system, the vibration loading system and the distribution system. The detection system comprises an acceleration sensor 29 and a first remote transmission pressure sensor 34, and the acceleration sensor 29 and the first remote transmission pressure sensor 34 are respectively used for measuring an acceleration value and a first pressure value of the tested piece and transmitting the values to the computer 31 of the vibration loading system for display.

Specifically, in the present embodiment, vibration test conditions such as an acceleration sensor channel, sensitivity, and the like are set before the vibration test. In the vibration test, the acceleration sensor measures the acceleration value of the tested piece in real time, transmits the acceleration value to the vibration controller of the vibration loading system through the signal wire of the acceleration sensor for signal processing, transmits the processed signal to the computer 31 of the vibration loading system, and transmits the processed signal to the measurement and control system for data processing. The first remote transmission pressure sensor is used for measuring a first pressure value of a tested piece in real time, transmitting the first pressure value to the signal converter 33 of the vibration loading system to be converted into a voltage signal, processing the voltage signal by the vibration controller 32 of the vibration loading system, transmitting the voltage signal to the computer 31 of the vibration loading system, and transmitting the voltage signal to the measurement and control system for data processing. And then displaying the acceleration value control curve and the first pressure value of the tested piece by a computer control software interface.

The computer interface of the comprehensive test system provided by the embodiment can not only display the acceleration control curve, but also display the pressure value at the same time, does not need to add an additional measuring system, reduces the test cost and the requirement on space, and solves the problem that the computer interface of the existing test system can only display the acceleration control curve.

As shown in fig. 1 and 3, according to an embodiment of the present invention, the integrated test system further includes a measurement and control system besides the low temperature medium storage system, the vibration loading system, the distribution system and the detection system. The acceleration sensor 29 and the first remote pressure sensor 34 are also used for transmitting the acceleration value and the first pressure value to the measurement and control system for data processing, respectively.

The measurement and control system of the comprehensive test system provided by the embodiment can monitor and record test process data, such as an acceleration value and a pressure value of a tested piece.

As shown in fig. 1, according to an embodiment of the present invention, the cryogenic medium storage system includes a self-pressurization system in addition to the cryogenic tank. The self-pressurizing system comprises a first vaporizing valve 72, a second vaporizing valve 73 and a vaporizing device 5. The cryogenic filler pipe communicates with the self-pressurizing inlet of the cryogenic tank 1 through a vaporization pipe 74. The first vaporizing valve 72, the vaporizing device 5, and the second vaporizing valve 73 are sequentially provided on the vaporizing pipe 74. The vaporizing device 5 is used for vaporizing the liquid low-temperature medium, the first vaporizing valve 72 is used for controlling the low-temperature medium to be input into the vaporizing device 5 for vaporization, and the second vaporizing valve 73 is used for controlling the low-temperature medium to enter the low-temperature storage tank 1 after vaporization so as to adjust the pressure in the low-temperature storage tank 1.

Specifically, a first vaporization valve and a second vaporization valve are opened, a low-temperature medium in the low-temperature storage tank flows through the low-temperature filling pipe, flows through the vaporization pipe, enters the vaporization equipment, is vaporized, and then enters the low-temperature storage tank through the second vaporization valve. The self-pressurization system of the comprehensive test system provided by the embodiment can increase the pressure in the low-temperature storage tank, effectively improves the speed of filling the low-temperature medium from the low-temperature storage tank to the tested piece, and improves the test efficiency.

As shown in fig. 1, according to an embodiment of the present invention, the integrated test system further includes a low temperature working container 12 besides the low temperature medium storage system, the vibration loading system, the distribution system, the detection system and the measurement and control system. The cryogenic fill pipe includes a first cryogenic fill pipe 9 and a second cryogenic fill pipe 23. The first low-temperature shutoff valve 7 is provided in the first low-temperature filler pipe 9. The low-temperature storage tank 1 fills a low-temperature medium into the low-temperature working container 12 through the first low-temperature filling pipe 9, and the volume of the low-temperature working container 12 is smaller than that of the low-temperature storage tank 1. The low-temperature working container 12 is connected with the tested piece 10 through a second low-temperature filling pipe 23, and the second low-temperature filling pipe 23 is provided with a second low-temperature stop valve 21 so as to control the low-temperature working container 12 to convey a low-temperature medium to the tested piece 10. The low-temperature working container 12 is used for cold insulation and heat insulation of a low-temperature medium stored in the low-temperature working container by adopting a polyurethane foaming technology, and the low-temperature storage tank 1 is a low-pressure vacuum heat insulation type storage tank.

In the embodiment, the first low-temperature stop valve is opened, and the low-temperature working container is filled with the low-temperature medium. Then, close first low temperature stop valve, open the second low temperature stop valve, to being annotated the low temperature medium by the test piece. The low-pressure vacuum heat-insulating storage tank can store low-temperature media for a long time, and the filling frequency of the low-temperature media is reduced. Aiming at the test requirement that the low-temperature medium demand is less or the requirement of a part of test stages, the volume of the low-temperature working container is smaller than that of the low-temperature storage tank, and the polyurethane foaming technology is adopted to carry out cold insulation and heat insulation on the low-temperature medium stored in the low-temperature working container, so that the test requirement is met, and the test cost is reduced.

In this embodiment, the first cryogenic fill pipe and the second cryogenic fill pipe may communicate with the bottom of the cryogenic working vessel, and this embodiment is not particularly limited thereto.

In the comprehensive test system of this embodiment, the second low temperature stop valve can adopt pneumatic or electric control, if unexpected in the testing process appears, can promptly cut off low temperature medium supply.

As shown in fig. 1 and 2, according to one embodiment of the present invention, the gas distribution system is connected to the pressurized inlet of the cryogenic working vessel 12 through a second branch conduit 59. The second branch conduit 59 is provided with a second booster valve 15 for controlling the gas distribution system to supply gas to the cryogenic working vessel 1 to regulate the pressure in the cryogenic working vessel 12.

In this embodiment, the gas distribution system delivers gas to the low-temperature working container through the second branch pipeline (for example, delivers pure high-pressure air from the top of the low-temperature working container), so as to pressurize the low-temperature working container, adjust the flow and pressure of the low-temperature medium to be injected to the tested piece, improve the injection efficiency or meet the pressure requirement of the test on the low-temperature medium output by the low-temperature working container.

As shown in fig. 1, according to the utility model discloses an embodiment, low temperature storage tank 1 and low temperature working container 12 include first teletransmission level gauge 2 and second teletransmission level gauge 11 respectively, are used for measuring the first liquid level value of low temperature medium in low temperature storage tank 1 and the second liquid level value of low temperature medium in low temperature working container 12 respectively to transmit it to observing and controlling the system, in order to carry out data processing.

In this embodiment, the first liquid level value and the second liquid level value may be data in the form of differential pressure, and the measurement and control system converts the received differential pressure into the volumes of the low-temperature medium in the low-temperature storage tank and the low-temperature container. The measurement and control system of the comprehensive test system provided by the embodiment can monitor and record the liquid level (namely, the content) of the low-temperature medium in the low-temperature storage tank and the low-temperature working container in real time so as to master the content of the low-temperature medium in the low-temperature storage tank and the low-temperature working container in real time.

As shown in fig. 1 and 3, according to an embodiment of the present invention, the integrated test system further includes a waste liquid tank 38 connected to the tested piece 10 through a low temperature medium discharge pipe 36, in addition to the low temperature medium storage system, the vibration loading system, the distribution system, the detection system, the measurement and control system, and the low temperature working container 12. The low-temperature medium discharge pipe 36 is provided with a discharge stop valve 68 to control the discharge of the low-temperature medium in the tested piece 10 to the waste liquid tank 38. And a remote temperature sensor 35 is arranged between the tested piece 10 and the discharge stop valve 68 and is used for measuring the temperature value of the tested piece 10, the temperature value is transmitted to the signal converter 33 of the vibration loading system and then converted into a voltage signal, the voltage signal is processed by the vibration controller 32 of the vibration loading system and then transmitted to the computer 31 of the vibration loading system for display, and finally the voltage signal is transmitted to the measurement and control system for data processing.

In the embodiment, the remote temperature sensor measures the temperature of the tested piece by measuring the temperature of the low-temperature medium leaked out of the tested piece. The comprehensive test system provided by the embodiment can pre-cool the test system and the tested piece before the beginning of the formal test. Specifically, the low-temperature medium enters the tested piece from the low-temperature working container through the second low-temperature filling pipe, and then is discharged to the waste liquid tank through the low-temperature medium discharge pipe. And the remote temperature sensor transmits the measured temperature value of the tested piece to a computer of the vibration loading system for display, and transmits the temperature value to the measurement and control system, and the measurement and control system monitors the temperature value in real time and stops precooling until the temperature value meets the requirements of subsequent tests.

If the low-temperature medium in the tested piece needs to be emptied (for example, after precooling), the test system can be blown off by closing the fourth low-temperature stop valve 26 after precooling by using the air distribution system, so that the low-temperature medium in the tested piece is emptied, and the subsequent ultralow-temperature vibration test or the vibration test under different pressures is facilitated.

In addition, the comprehensive test system that this embodiment provided can show acceleration, pressure value and temperature value simultaneously, does not need extra measurement system to measure and show the temperature value.

As shown in fig. 1 and 3, according to an embodiment of the present invention, the measurement and control system determines whether to send the first pressure increasing command according to the received first pressure value, so as to control the opening or closing of the first pressure increasing valve 71, and adjust the pressure of the tested object 10. The measurement and control system judges whether to send a first filling instruction according to the received temperature value so as to control the opening or closing of the second low-temperature stop valve 21 and adjust the temperature of the tested piece; and the measurement and control system judges whether to send an alarm instruction or not according to the received first liquid level value. And the measurement and control system judges whether to send a second filling instruction according to the received second liquid level value so as to control the opening or closing of the first low-temperature stop valve 7 and adjust the content of the low-temperature medium in the low-temperature working container 12.

In this embodiment, the measurement and control console 45 of the measurement and control system receives the first pressure value of the tested piece, the first level value of the low-temperature storage tank, the second level value of the low-temperature working container, and the temperature value of the low-temperature medium leaked out of the tested piece, and analyzes and judges the values. For example, a rated value or a rated range corresponding to the measured value may be set in the measurement and control system in advance. When vibration tests under different pressures need to be carried out on a tested piece, the measurement and control system sends a first pressurization instruction to control the first pressurization valve 71 to be opened, pressurization is carried out on the tested piece through the air distribution system, when the pressure of the tested piece reaches a preset limit value or limit range, the measurement and control system controls the first pressurization valve 71 to be closed, and the vibration working condition of the tested piece under the pressure is recorded. It should be understood by those skilled in the art that the above is also applicable to vibration tests (including vibration tests of ultralow-temperature pressurized circulation, ultralow-temperature pressure maintaining, and vibration tests of ventilation and pressurized) performed on low-temperature media working conditions of a tested piece under different pressures, that is, the vibration loading system can control the air distribution system to ventilate the tested piece so as to adjust or maintain the pressure of the low-temperature media in the tested piece, thereby achieving the corresponding test purpose. When the test system and the tested piece need to be precooled, the measurement and control system sends a first filling instruction to control the second low-temperature stop valve to be opened, the low-temperature medium starts to be filled into the tested piece, and when the temperature of the low-temperature medium flowing into the low-temperature medium discharge pipe of the tested piece reaches a preset rated value or limit range, the measurement and control system controls the second low-temperature stop valve to be closed. If the low-temperature medium in the tested piece needs to be emptied, the measurement and control system can control the opening of the discharge stop valve and can control the gas distribution system to convey gas to the tested piece so as to empty the low-temperature medium in the tested piece.

Further, the low-temperature storage tank 1 is provided with a filling port, and the filling port is provided with only a filling valve 6. When the measurement and control system monitors that the first liquid level value is lower than the corresponding preset rated value or rated range, the measurement and control system sends an alarm instruction, opens the filling valve 6, and fills the low-temperature medium into the low-temperature storage tank through the filling port. In addition, when the measurement and control system monitors that the second liquid level value is corresponding to a preset rated value or a preset rated range, the measurement and control system controls the first low-temperature stop valve to be opened, low-temperature media are filled into the low-temperature working container from the low-temperature storage tank until the requirements are met, and the measurement and control system controls the first low-temperature stop valve to be closed.

Further, the cryogenic tank is provided with a second remote pressure sensor 3 and a first safety valve 4. In particular, the cryogenic medium in the cryogenic tank may vaporize, and in particular, the cryogenic medium may be more susceptible to vaporization when the cryogenic tank is cryogenically filled. Vaporization of the cryogenic medium results in an increase in the pressure inside the cryogenic tank. In this embodiment, the second remote pressure sensor measures a second pressure value of the cryogenic tank and transmits it to the measurement and control system. The measuring and controlling system presets a corresponding limit value or limit range, and when the second pressure value exceeds the rated value or limit range, the measuring and controlling system controls the first safety valve to be opened, gas in the low-temperature storage tank is released, the pressure in the low-temperature storage tank is reduced, and overpressure release is achieved. The first liquid level value and the second pressure value of the low-temperature storage tank are respectively measured in real time through the first remote transmission liquid level value and the second remote transmission pressure sensor, the state of the low-temperature storage tank is monitored in real time through the measurement and control system, and the safety of the low-temperature storage tank is improved. The low-temperature storage tank can be also provided with a low-temperature storage tank pressure gauge for displaying the pressure in the low-temperature storage tank on site.

In this embodiment, the first safety valve may also be a pneumatic check valve. When the second pressure value of the low-temperature storage tank rises to a preset value (such as the allowable pressure value of the low-temperature storage tank), the first safety valve is opened by the squeezing valve, the gas in the low-temperature storage tank is released, and the pressure in the low-temperature storage tank is reduced. The first safety valve of this embodiment adopts mechanical structure to realize opening and closing, can in time release the pressure to the low temperature storage tank, need not observe and control system remote control, has improved the reaction rate that the low temperature storage tank superpressure was released, prevents that the superpressure from and damaging the low temperature storage tank, has improved the security of system.

Further, the low-temperature storage tank is provided with a third exhaust valve, and in a test, if the pressure of the low-temperature storage tank needs to be reduced, the third exhaust valve can be opened to release the pressure of the low-temperature working container (for example, the third exhaust valve is remotely controlled by a measurement and control system).

Further, the cryogenic working vessel is provided with a third remote pressure sensor 13 and a first vent valve 17. In this embodiment, the third remote pressure sensor measures a third pressure value of the low-temperature working container, and transmits the third pressure value to the measurement and control system. The measuring and controlling system presets a corresponding limit value or limit range, and when the third pressure value exceeds the rated value or limit range, the measuring and controlling system controls the first exhaust valve to be opened, so that the gas in the low-temperature working container is released, and the pressure in the low-temperature working container is reduced. The second liquid level value and the third pressure value of the low-temperature working container are respectively measured in real time through the second remote transmission liquid level value and the third remote transmission pressure sensor, the state of the low-temperature working container is monitored in real time through the measurement and control system, and the safety of the low-temperature working container is improved. The first exhaust valve may be a pneumatic valve or a solenoid valve. In the test, if the pressure of the low-temperature working container needs to be reduced, the first exhaust valve can be remotely controlled to be opened through the measurement and control system to release the pressure of the low-temperature working container. Preferably, the low-temperature working container is also provided with a second vent valve 18, and the second vent valve is a manual valve. When special conditions are met, the low-temperature working container needs to be subjected to emergency pressure relief, and the second exhaust valve can be manually opened to perform manual pressure relief. In addition, when the low-temperature medium is filled into the low-temperature working container, the gas (such as high-pressure gas) in the low-temperature working container can be exhausted through the first exhaust valve and the second exhaust valve.

Further, the cryogenic working vessel is provided with a second safety valve 16. When the third pressure value of the low-temperature working container rises to a preset value (such as the allowable pressure value of the low-temperature working container), the second safety valve is opened to timely relieve the pressure of the low-temperature working container, so that the low-temperature working container is protected, the low-temperature working container is prevented from being damaged due to overpressure, and the safety of the system is improved.

As mentioned above, the second safety valve can be controlled to open and close by a measurement and control system, and a pneumatic one-way valve (i.e. a valve with a mechanical structure that opens automatically when overpressure occurs) can be used.

Further, the second cryogenic fill pipe 23 is provided with a fourth remote pressure sensor 25 for measuring the pressure of the second cryogenic fill pipe 23 and transmitting the pressure of the second cryogenic fill pipe 23 to the measurement and control system for data processing.

Further, the measurement and control system comprises an emergency processing module. When the measurement and control system monitors that parameters (such as temperature values, pressure values and the like) change abnormally, an emergency stop instruction is sent out. For example, if the pipeline leaks, the pressure value of the pipeline suddenly drops, the measurement and control system can judge that the pipeline is abnormal according to the received pressure value, and the comprehensive test system is controlled to stop the test process (for example, the second low-temperature stop valve is closed). After the test is finished, the measurement and control system sends a finishing instruction, and a power amplifier, a high-pressure oil pump, a water cooling cabinet, a cooling water tower and the like of the gain and vibration loading system are sequentially closed, so that the comprehensive test system is reset.

Furthermore, the first cryogenic filling pipe 9 is provided with a first cryogenic filter 8, and the second cryogenic filling pipe 23 is provided with a second cryogenic filter 22 for filtering the cryogenic medium to remove impurities. If the first cryogenic fill pipe is long, a third cryogenic stop valve 20 may also be provided in the first cryogenic fill pipe. Preferably, the third low temperature stop valve 20 is close to the low temperature working container 12, and closing the third low temperature stop valve 20 can stop filling the low temperature working container 12 with the low temperature medium in time. Similarly, if the second cryogenic fill pipe is longer, a third cryogenic filter 24 and a fourth cryogenic stop valve 26 may also be provided in the second cryogenic fill pipe. Preferably, the fourth low-temperature filter 26 is close to the tested piece, so that the purity of the low-temperature medium filled in the tested piece is ensured.

Further, the first low-temperature filling pipe 9 is communicated with the outside through an emptying pipe 75, and the emptying pipe 75 is provided with an emptying valve 19, so that the pipeline differential pressure caused by vaporization of a low-temperature medium in the first low-temperature filling pipe 9 can be prevented.

Further, the utility model discloses a comprehensive test system still includes product control appearance 67. The product controller 67 is connected to the test object via a product controller cable 66.

Specifically, if the tested piece is a valve (such as a rocket valve, an engine valve, etc.), in the test process, the valve can be opened and closed in the vibration environment through a product controller and a product controller cable according to the test requirements and the measured values of the first remote transmission pressure sensor and the remote transmission temperature sensor. If the tested piece is an air conditioner connector, an air pipe connector or a low-temperature filling and discharging connector, the connector can be unlocked and separated in a vibration environment through a product controller and a product controller cable according to test requirements and measurement values of a first remote transmission pressure sensor and a remote transmission temperature sensor.

As shown in fig. 2, according to an embodiment of the present invention, the air distribution system includes an air path main input pipe 46 for connecting an external air source (e.g., an air bottle, an air station). The gas circuit main input pipe is provided with a first gas circuit filter 47 for filtering impurities in the gas, a main gas circuit stop valve 48 for controlling the input of the gas source, and a main origin pressure gauge 49 for measuring and displaying the pressure of the gas circuit main input pipe. The gas manifold inlet 46 communicates with a gas manifold 50. The gas collecting pipe 50 is respectively communicated with the container pressurization road 77, the road regulated by the test piece, the blowing gas path 63 and the standby gas path 64. Wherein the container pressurization path 77 is connected to the second branch conduit 59. The tested piece pressure regulating circuit comprises a high-pressure gas output circuit 76, a medium-pressure gas output circuit 61 and a low-pressure gas output circuit 62, and can perform vibration test examination of normal-temperature high-pressure and low-pressure gas. The blowing gas path 63 is used for blowing the test system and the tested piece. According to different requirements of tests on pressure, a proper tested piece leveling roller is selected to be communicated with the first branch pipeline 60. The diameters of the gas collecting pipe 50 are respectively larger than the diameters of the container pressurization road 77, the road regulated by the test piece, the blowing air path 63 and the standby air path 64, and the gas can be buffered and stored.

The comprehensive test system that this embodiment provided can be applicable to liquid rocket spare part and verify the normal atmospheric temperature, high pressure and the ultra-low temperature vibration test system of accepting level, identification level.

The present embodiment does not specifically limit the number and pressure of the gas output pipelines in the gas distribution system pipeline.

Further, the gas distribution system further includes a start valve control gas line 55 in communication with the gas manifold 50 for connection with a pneumatic type valve in the integrated test system to control the opening or closing of each valve.

Further, the container pressurization path 77, the measured piece regulation path, the blowing gas path 63, and the backup gas path 64 are respectively provided with an outlet shutoff valve 51 for controlling gas output, a pressure reducing valve 52 for reducing pressure of output gas, and a gas path pressure gauge 53 for measuring and displaying pipeline pressure. In addition, the container pressurization path 77, the measured object adjustment path, the blow-off gas path 63 and the standby gas path 64 are respectively communicated with the outside through a gas source gas discharge path 78, and gas source gas path exhaust valves 54 for exhausting residual gas in the pipelines are respectively arranged between the container pressurization path and the gas source gas discharge path 78.

Further, the utility model discloses an integrated control system still includes first metal collapsible tube. The first branch pipeline 60 is connected with the tested piece through the first metal hose 28, and the second low-temperature filling pipe 23 is connected with the tested piece through the second metal hose 27, so that the connection and the disassembly between the tested piece and the comprehensive test system are more convenient.

Further, the low-temperature filling pipe can be provided with a flow meter to monitor the filling flow.

The present embodiment is not particularly limited to the number, length, position, and the like of the metal hoses. For example, a low-temperature medium bleeder line, a waste gas bleeder line and the like can adopt metal hoses, so that the corresponding equipment is more convenient to connect and disassemble.

The utility model provides a valve among the combined test system or realize pipeline switch's relevant equipment can adopt pneumatic type valve or solenoid valve. The gas distribution system also includes a valve control circuit 39 for controlling the opening and closing of the pneumatic valve in the integrated test system. The valve control line 39 is provided with a control gas collecting column 55 for storing gas and a plurality of valve control branch lines. The valve control branch line includes a solenoid valve box 56. The solenoid valve box 56 includes a control gas filter 57 and a control gas solenoid valve 58 for controlling the pneumatic type valve switch. The measurement and control system can directly or indirectly control the opening or closing of a valve in the test system, so that the purpose of relevant tests is realized. The utility model provides a comprehensive test system has realized having guaranteed testing personnel's security to the remote control of experimental flow.

The utility model discloses do not do specific restriction to quantity, specification, parameter, mounting means and installation position etc. of low temperature storage tank, low temperature working vessel, valve, filter, pressure sensor, temperature sensor etc..

The above embodiments of the present invention can be combined with each other, and have corresponding technical effects.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a liquid rocket spare part ultra-low temperature vibration combined test system which characterized in that includes: a cryogenic medium storage system and a vibration loading system;

the low-temperature medium storage system comprises a low-temperature storage tank, a low-temperature medium storage unit and a low-temperature medium storage unit, wherein the low-temperature medium storage system is used for storing a low-temperature medium;

the outlet of the low-temperature storage tank is connected with a tested piece through a low-temperature filling pipe, and the low-temperature filling pipe is provided with a first low-temperature stop valve so as to control the low-temperature storage tank to convey a low-temperature medium to the tested piece;

the vibration loading system comprises a vibration table and a vibration tool;

and the tested piece is arranged on the vibrating table through the vibrating tool so as to carry out vibration test on the tested piece.

2. The integrated test system according to claim 1, further comprising a gas distribution system connected to the test piece through a first branch conduit, wherein the first branch conduit is provided with a first pressure increasing valve for controlling the gas distribution system to supply gas to the test piece so as to adjust the pressure of the test piece.

3. The comprehensive test system according to claim 2, further comprising a detection system, wherein the detection system comprises an acceleration sensor and a first remote pressure sensor, and the acceleration sensor and the first remote pressure sensor are respectively used for measuring an acceleration value and a first pressure value of the tested piece and transmitting the values to a computer of the vibration loading system for display.

4. The integrated test system of claim 3, further comprising a measurement and control system;

the acceleration sensor and the first remote transmission pressure sensor are further respectively used for transmitting the acceleration value and the first pressure value to the measurement and control system so as to process data.

5. The integrated test system of claim 4, wherein the cryogenic medium storage system further comprises a self-pressurization system;

the self-pressurization system comprises a first vaporization valve, a second vaporization valve and vaporization equipment;

the low-temperature filling pipe is communicated with a self-pressurization inlet of the low-temperature storage tank through a vaporization pipe;

the first vaporization valve, the vaporization device and the second vaporization valve are sequentially arranged on the vaporization pipe;

the vaporization equipment is used for vaporizing liquid low-temperature medium;

the first vaporizing valve is used for controlling the low-temperature medium to be input into the vaporizing device for vaporization;

the second vaporizing valve is used for controlling the vaporized low-temperature medium to enter the low-temperature storage tank so as to adjust the pressure in the low-temperature storage tank.

6. The integrated test system of claim 5, further comprising a cryogenic working vessel;

the low-temperature filling pipe comprises a first low-temperature filling pipe and a second low-temperature filling pipe;

the first low-temperature stop valve is arranged on the first low-temperature filling pipe;

the low-temperature storage tank is used for filling a low-temperature medium into the low-temperature working container through the first low-temperature filling pipe, and the volume of the low-temperature working container is smaller than that of the low-temperature storage tank;

the low-temperature working container is connected with a tested piece through the second low-temperature filling pipe, and the second low-temperature filling pipe is provided with a second low-temperature stop valve so as to control the low-temperature working container to convey a low-temperature medium to the tested piece;

the low-temperature working container adopts a polyurethane foaming technology to carry out cold insulation and heat insulation on a low-temperature medium stored in the low-temperature working container, and the low-temperature storage tank is a low-pressure vacuum heat insulation type storage tank.

7. The integrated test system according to claim 6, wherein the gas distribution system is connected to the pressurized inlet of the cryogenic working vessel via a second branch conduit;

and the second branch pipeline is provided with a second booster valve for controlling the gas distribution system to convey gas to the low-temperature working container so as to adjust the pressure in the low-temperature working container.

8. The integrated test system according to claim 7, wherein the cryogenic storage tank and the cryogenic working vessel respectively comprise a first remote liquid level meter and a second remote liquid level meter, and the first remote liquid level meter and the second remote liquid level meter are respectively used for measuring a first liquid level value of the cryogenic medium in the cryogenic storage tank and a second liquid level value of the cryogenic medium in the cryogenic working vessel and transmitting the first liquid level value and the second liquid level value to the measurement and control system for data processing.

9. The comprehensive test system according to claim 8, further comprising a waste liquid tank connected to the test piece through a low-temperature medium drain pipe;

the low-temperature medium discharge pipe is provided with a discharge stop valve to control the low-temperature medium in the tested piece to be discharged to the waste liquid tank;

and a remote temperature sensor is arranged between the tested piece and the discharge stop valve and used for measuring the temperature value of the tested piece, transmitting the temperature value to the computer for displaying and transmitting the temperature value to the measurement and control system for data processing.

10. The comprehensive test system according to claim 9, wherein the measurement and control system determines whether to send a first pressurization command according to the received first pressure value, so as to control the opening or closing of the first pressurization valve and adjust the pressure of the tested piece;

the measurement and control system judges whether a first filling instruction is sent out or not according to the received temperature value so as to control the opening or closing of the second low-temperature stop valve and adjust the temperature of the tested piece;

the measurement and control system judges whether to send an alarm instruction or not according to the received first liquid level value;

and the measurement and control system judges whether to send a second filling instruction according to the received second liquid level value so as to control the opening or closing of the first low-temperature stop valve and adjust the content of the low-temperature medium in the low-temperature working container.

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