CN113984397A

CN113984397A - Near-coast space engine test bed

Info

Publication number: CN113984397A
Application number: CN202111137589.6A
Authority: CN
Inventors: 王登; 戴政; 张昉
Original assignee: Zhejiang Landspace Technology Co Ltd
Current assignee: Zhejiang Landspace Technology Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-01-28

Abstract

The invention provides an offshore spaceflight engine test bed which is arranged on a gravel layer paved on offshore gravel. The method comprises the following steps: the semi-submersible type seawater desalination device comprises a concrete dike and a semi-submersible type platform which are arranged on a gravel layer, wherein one side of the semi-submersible type platform is close to the concrete dike, and the other opposite side of the semi-submersible type platform faces the seawater. The semi-submersible platform comprises a lower part arranged for submerging seawater and an upper part arranged for exposing seawater. The platform deck on the upper part of the semi-submersible platform is at least provided with a propellant storage tank, an engine mounting bracket and at least one rail for transferring the engine. The track is laid at the middle position of the platform deck from the coast towards the seawater, and the propellant storage tank is arranged near the track and used for providing propellant for the engine arranged on the track. After an engine mounted on an engine mounting support moves to a test run position along a rail, a spray pipe of the engine is arranged towards seawater, a diversion trench structure is not required to be built, and high-temperature fuel gas generated in the test run process can be directly sprayed to the seawater.

Description

Near-coast space engine test bed

Technical Field

The invention relates to the technical field of test run of spaceflight engines, in particular to a test run platform of an offshore spaceflight engine.

Background

In recent years, the tonnage grade of the liquid aerospace engine is gradually improved, and the test run demand of the engine is increased. Due to the noise problem generated in the test run process of the high-thrust engine, the site selection of the engine test run platform is very difficult to construct on land.

In order to effectively utilize the advantages of offshore island reef geographic resources and reduce the investment cost for building the test bed, an aerospace engine test bed built on the near coast needs to be provided urgently.

Disclosure of Invention

Those skilled in the art will recognize additional features and advantages upon reading the detailed description, and upon viewing the accompanying drawings.

The invention provides an offshore-bank space engine test bed which is arranged on a gravel layer paved on offshore gravel and comprises a concrete dike and a semi-submersible platform which are arranged on the gravel layer; one side of the semi-submersible platform is arranged close to the concrete dike, and the other opposite side of the semi-submersible platform faces the seawater; the semi-submersible platform comprises a lower part arranged for submerging seawater and an upper part arranged for exposing seawater; the platform deck at the upper part of the semi-submersible platform is at least provided with a propellant storage tank, an engine mounting bracket and at least one rail for transferring an engine; the rail is laid at the middle position of the deck of the platform from the coast to the seawater; the propellant storage tank is arranged near the track and used for providing propellant for an engine arranged on the track. After an engine mounted on the engine mounting support moves to a test run position along the rail, a spray pipe of the engine is arranged towards seawater, and high-temperature fuel gas generated in the test run process is guaranteed to be directly sprayed to the seawater.

In one embodiment, the rails include a first rail and a second rail laid at a middle position of the platform deck from a shore toward the sea, the first rail being disposed in parallel with the second rail; the propellant storage tank is arranged near the first rail and the second rail and used for providing propellant for the engine arranged on the first rail and the second rail.

In one embodiment, the propellant tanks include a horizontal fuel tank and a vertical fuel tank; and a horizontal fuel storage tank is arranged at one end, far away from the test parking space, of the first rail and one end, far away from the test parking space, of the second rail, and is used for short-term storage of liquid propellant, and a vertical fuel storage tank is arranged at the outer sides of the first rail and the second rail and is used for storage of the liquid propellant in the test parking process.

In the above embodiment, the rails are spaced at least 6 meters apart to avoid interference between the engines when they are simultaneously tried.

In one embodiment, the engine mounting bracket is movably disposed to each rail.

In one embodiment, a buoyancy tank for storing water is arranged at the lower part of the semi-submersible platform; and storing water in the buoyancy tank to increase the gravity of the semi-submersible platform so as to increase the friction force with the gravel layer.

In one embodiment, the semi-submersible platform is arranged on the gravel layer through a fixed anchor, and an anti-slip layer is further arranged on the part, in contact with the gravel layer, of the buoyancy tank, so that the semi-submersible platform is stably arranged on the gravel layer during engine test.

In one embodiment, the semi-submersible platform is of a concave structure, one side with concave features faces the sea, and the other opposite side is arranged close to the concrete embankment; two outwards extending positions of the concave semi-submersible platform are respectively provided with a lightning protection tower and an apron, and a measurement and control equipment room is arranged at a position close to the concrete dike.

In one embodiment, the track is laid in the middle of the concave semi-submersible platform, one end of the track in the length direction is close to the concrete dike, and the other end of the track is arranged in the concave position of the concave semi-submersible platform close to seawater; the propellant storage tank is disposed adjacent the track at a location proximate the concrete dam.

In one embodiment, the semi-submersible platform also has a power system to power it when it is required to move a location; a water spraying facility for cooling the engine is further arranged on the platform deck of the semi-submersible platform; the pumping mechanism of the water spraying facility is arranged in seawater, and the water spraying mechanism is arranged near an engine test parking space.

The offshore spaceflight engine test bed fills the technical blank of the current development of offshore engine hot test equipment, and solves the problems of large noise, difficult site selection and large capital investment in the onshore engine test process.

The offshore spaceflight engine test bed effectively utilizes the geographical advantages of the island and the characteristic that sea noise is easy to diffuse and the like, can meet the requirement that two or more engines are ignited and tested at the same time, obviously reduces the manufacturing cost of the test bed, and simultaneously improves the test efficiency of the engines.

According to the invention, the semi-submersible platform water storage is sunk on the seabed of the offshore area, so that the advantages of geographical resources such as nearby island reefs and the like can be effectively utilized, and the seawater is utilized to cool the high-temperature fuel gas sprayed out of the engine, so that the initial investment cost can be reduced. Compared with a land test bed scheme, the offshore spaceflight engine test bed does not need to build a diversion trench structure, and the capital investment is greatly reduced. Meanwhile, the engine and the mounting bracket are designed to be movable, and the working requirements of the front and back of the test run and the test run process are met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a diagram of the positional relationship between an offshore shore space engine test bed and the near shore and sea water of an embodiment of the present invention;

FIG. 2 is a first top view of an offshore space engine test stand in accordance with an embodiment of the present invention;

FIG. 3 is a second top view of an offshore space engine test stand in accordance with an embodiment of the present invention;

FIG. 4 is a perspective view of an offshore space engine test stand in accordance with an embodiment of the present invention.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. 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 should not be taken as limiting. Like terms refer to like elements throughout the description.

Referring to fig. 1 and 2, the offshore-shore space engine test bed provided by the invention is arranged on a gravel layer 200 laid on offshore gravel 100, and comprises a concrete dike 1 and a semi-submersible platform 2 which are arranged on the gravel layer 200, wherein the concrete dike 1 is arranged close to an island reef 400 at the coast. One side of the semi-submersible platform 2 is disposed adjacent to the concrete dam 1 and the opposite side is disposed toward the sea 300. At least one side of the semi-submersible platform 2 is guaranteed to be facing the sea water 300. The semi-submersible platform 2 includes a lower portion for submerging the seawater 300 and an upper portion for exposing the seawater 300, ensuring that at least a portion of the upper portion of the semi-submersible platform 2 is not submerged by the seawater 300 even at high tide levels at ordinary times. The platform deck 21 on top of the semi-submersible platform 2 is provided with at least a propellant tank 3, an engine mounting bracket 4, and at least one rail 5 for transferring the engine 500. Track 5 is laid on platform deck 21 at an intermediate location from shore towards the sea, ensuring that when engine 500 is positioned in the test bay (position in figure 2) the nozzle is directed towards sea 300. The propellant tank 3 is arranged in the vicinity of the track 5 for providing propellant to the engine 500 arranged in the track 5 and for short-term storage of propellant.

After the engine 500 installed on the engine mounting bracket 4 moves to a test run position along the rail 5, the spray pipe of the engine is arranged towards seawater, so that high-temperature gas generated in the test run process is directly sprayed to the seawater. The engine for ignition test run by using the test bed provided by the embodiment of the invention can be a liquid oxymethane engine using green pollution-free fuel, and can also be other engines using other green pollution fuels. The wake flow of the engine is directly sprayed to the sea level in the test run process, and a diversion trench structure does not need to be designed and built, so that the construction cost of the test run table can be greatly reduced.

When the test bed is used for testing, the engine and the mounting bracket can be assembled and fixed in the center of a deck of the semi-submersible platform (also in the middle of the rail), and then the engine mounting bracket and the engine can slide to a launching position together by the slide rail and are fixed, and then ignition test is carried out.

The offshore spaceflight engine test bed disclosed by the embodiment of the invention fills a technical blank of development of offshore engine hot test equipment, simple civil engineering construction is carried out on the bank of the island by utilizing the advantage of offshore island reef geographical resources, and an engine mounting bracket, a propellant storage tank and at least one rail are integrally arranged on a platform deck of a semi-submersible platform, so that the offshore test platform meets the requirement of offshore test.

As the relative position relation between the liquid propellant storage tank and the engine needs to be simulated and the engine thrust needs to be accurately measured in the test run process of the aerospace engine. The scheme provides an overall solution idea that a gravel layer is laid on gravels in the offshore area, the semi-submersible platform sinks to the seabed after water is injected, the liquid propellant tank group, the engine mounting frame, the engine and the measurement and control equipment are integrated on a platform deck, the geographical advantages of the island and the reef and the characteristic that sea noise is easy to diffuse can be effectively utilized, and the realization and the application of the offshore test bed are completed.

Referring to fig. 2, in one embodiment, the rails include a first rail 51 and a second rail 52 laid out from the shore toward the sea at a middle position of the platform deck 21, and a test run position of the two rails is provided near the sea at the platform deck 21. The first track 51 and the second track 52 are arranged in parallel at intervals, so that interference and influence generated when the two are simultaneously ignited to test a vehicle can be better isolated. The propellant tank 3 is disposed in the vicinity of the first rail 51 and the second rail 52 for supplying a propellant to the engine disposed in the first rail 51 and the second rail 52. It should be noted that the tank for supplying propellant to the first rail 51 and the tank for supplying propellant to the second rail 52 are different tanks, so that the ignition and termination of the two engines can be controlled independently, which is more convenient and safer.

Further, in order to ensure the working stability of the test bed provided by the embodiment of the invention, the two rails can bear the same thrust, and the engine thrust arranged on the two rails for ignition test running is also the same. Two parallel rails arranged in the middle of the test bed are used as areas for mounting, checking and dismounting the engine, so that preparation work before the engine is tested and dismounting work after the engine is tested are conveniently finished.

According to the offshore-shore space engine test bed provided by the embodiment of the invention, two groups of engine test areas with the same thrust are designed in consideration of the engine test requirements and the thrust levels, so that ignition test of two engines with the same thrust can be completed simultaneously, the space of the test bed is fully utilized, the test efficiency is improved, and the construction cost of the test bed is also reduced.

Referring to fig. 2 and 3 together, in the above embodiment, the propellant tank 3 includes the horizontal fuel tank 32 and the vertical fuel tank 316. A horizontal fuel tank 32 is typically provided at the end of the first 51 and second 52 rails remote from the test stand for short term storage of liquid propellant. Meanwhile, the vertical fuel storage tanks 31 are respectively arranged on the outer sides of the first rail 51 and the second rail 52 and are used as liquid propellant for storage in the test run process. The vertical fuel tank 31 includes: a vertical fuel tank 311 for supplying propellant to engines mounted in a first rail launch site, and a vertical fuel tank 312 for supplying propellant to engines mounted in a second rail launch site. The vertical fuel tank 311 is disposed on a side of the first rail 51 away from the second rail 52, and the vertical fuel tank 312 is disposed on a side of the second rail 52 away from the first rail 51. The two vertical fuel storage tanks work independently and do not interfere with each other, and independently provide propellant for corresponding engines.

According to the offshore spaceflight engine test bed provided by the embodiment of the invention, the horizontal fuel storage tank capable of storing the propellant in a short term and the vertical fuel storage tank capable of providing the propellant for the engine in real time are arranged at the proper position of the platform deck. When two or more than two tracks are arranged simultaneously, the corresponding vertical fuel storage tanks are independently arranged beside each track, so that a plurality of engines can be ensured to simultaneously ignite and test run after propellant is supplied to the engines through the independent vertical fuel storage tanks, the test run efficiency is improved, and the risk of simultaneously testing the engines is obviously reduced.

In order to further reduce the risk of simultaneously testing two or more engines, the interval between the tracks can be set to be at least 6 meters, and the mutual interference of the engines during the simultaneous test can be effectively avoided. For example, the interval between two rails for carrying two high thrust (80 ton thrust) engines for commissioning may be set to be between 6.5 and 7 meters.

In one embodiment, the engine mounting bracket is movably arranged on each rail, so that after the engine is mounted at the middle position of the platform deck, the engine bracket and the engine mounted on the engine bracket can be moved to the launching position together by using the rails.

In one embodiment, a buoyancy tank for storing water is arranged at the lower part of the semi-submersible platform, the gravity of the semi-submersible platform can be increased by storing water into the buoyancy tank, and further the friction force between the bottom of the semi-submersible platform and the gravel layer is increased, so that the semi-submersible platform is stably arranged on the gravel layer after being submerged into the seabed.

In the above embodiment, in order to increase the stability of the semi-submersible platform in seawater, the semi-submersible platform may be firmly disposed on the crushed stone layer by the fixing anchor. The bottom of flotation tank or semi-submerged formula platform still is equipped with the skid resistant course with the part of rubble layer contact, and semi-submerged formula platform can set up in the rubble layer more steadily when further guaranteeing the engine test run.

Referring to fig. 2, 3 and 4 together, in one embodiment, the semi-submersible platform 2 is of a "concave" configuration, with one side of the concave feature facing the sea and the opposite side being positioned adjacent to the concrete embankment 1. A lightning protection tower 6 and an air park 7 are respectively arranged at two outwards extending positions of the concave semi-submersible platform, a measurement and control equipment room 8 used for test run process measurement and office places is arranged at a position close to the concrete embankment 1, and a track and an engine test parking place are arranged at the inwards concave position of the concave semi-submersible platform. For the safety consideration of the test personnel and the test process, the periphery of the platform deck of the whole test bed is also provided with a guardrail 600.

The offshore spaceflight engine test bed is parked on an island or a remote coastal area, so that the helicopter parking place is mainly applied to emergency rescue when unsafe accidents such as explosion occur. Because the area near the coast is spacious, in order to avoid the equipment facilities of the test bed from being damaged by lightning strike, a lightning protection tower is arranged at a position far away from the propellant tank group.

Furthermore, the track is laid at the concave position of the concave semi-submersible platform. One end of the track in the length direction is close to the concrete dike, the other end of the engine test parking space is close to the seawater, and a propellant storage tank is arranged near the track and close to the concrete dike. In order to ensure the balance and stability of the whole semi-submersible platform, when a plurality of tracks are required to be arranged on the concave semi-submersible platform, the tracks can be symmetrically arranged on two sides of the concave position of the concave semi-submersible platform respectively.

When the offshore spaceflight engine test bed disclosed by the invention meets the requirements of severe weather and the like, the engine test bed can be moved in a mode of reducing self weight through drainage. The test bed of the invention can use a self-powered semi-submersible platform or a non-self-powered semi-submersible platform.

For example, the semi-submersible platform also has a power system for powering the semi-submersible platform when it is desired to move the location, for powering the semi-submersible platform to move when the test bed is transferred, increasing the rate of movement. The platform deck of the semi-submersible platform is also provided with a water spraying facility for cooling the engine, a water pumping mechanism of the water spraying facility is arranged in seawater, and the water spraying mechanism is arranged near the engine test parking space. The whole test bed is fire-fighting water and can also directly adopt seawater.

In the above embodiments, the offshore space engine test stand of the present invention further has a water level monitoring system. The water level monitoring system comprises a first monitoring device and a second monitoring device which are arranged on the outer wall of one side, facing the seawater, of the semi-submersible platform, and a bus system for transmitting data and a display device for displaying acquired data. The first monitoring device is arranged in a low water level area, the second monitoring device is arranged in a high water level area, and water level data are collected and then transmitted back to the display device between the measurement and control equipment through the bus system.

When the first monitoring device does not collect water level data, the water level is proved to be lower at the moment, if the engine is ignited for trial run at the moment, the seawater can not completely cool the high-temperature gas sprayed out by the engine, and potential safety hazards exist. Therefore, when the engine test bed is constructed, accurate measurement is usually performed to ensure that the first monitoring device arranged on the semi-submersible platform can be submerged by seawater. When the first monitoring device collects the water level data but the second monitoring device does not collect the water level data, the engine can be normally ignited to run, and the high-temperature gas sprayed out by the engine can be just cooled by the seawater. When the first monitoring device and the second monitoring device simultaneously acquire water level data, the seawater level data prove that the seawater level greatly rises, and at the moment, the display device between the measurement and control equipment can timely warn so as to facilitate the staff to take corresponding measures.

In order to avoid unforeseen risks and losses due to water level monitoring system failures, two first monitoring devices and two second monitoring devices may be provided redundantly.

The test bed in any one of the above embodiments of the invention is constructed at the position of the island reef near the coast, and if the construction (or parking) position is changed to other coast areas, only simple construction is carried out on the coast, which belongs to the protection scope of the application.

The semi-submersible platform of this application test bed does not possess self-navigation ability, if changes the semi-submersible platform into self-navigation formula in the scheme or be equipped with other auxiliary assembly, all belongs to the protection scope of this application.

The above-described embodiments of the present invention may be combined with each other with corresponding technical effects.

According to the offshore space engine test bed provided by the embodiment of the invention, the engine test measurement and control facilities and living facilities required by test personnel are designed on the semi-submersible platform in a modularized layout manner, and seawater is directly taken for fire protection, engine cooling and the like on the test bed, so that the test bed is convenient, simple and low in cost.

According to the invention, the semi-submersible platform water storage is sunk on the seabed of the offshore area, so that the advantages of geographical resources such as nearby island reefs and the like can be effectively utilized, the seawater is utilized to cool the high-temperature fuel gas sprayed out of the engine, and the initial investment cost is obviously reduced. Compared with a land test bed scheme, the offshore spaceflight engine test bed does not need to build a diversion trench structure, and the capital investment is greatly reduced. Meanwhile, the engine and the mounting bracket can be moved to the launching position, and the working requirements of the front and back of the test run and the test run process are met.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an coastal waters bank space engine test bench sets up on laying the rubble layer of coastal waters grit, its characterized in that includes: the concrete dike and the semi-submersible platform are arranged on the gravel layer; one side of the semi-submersible platform is arranged close to the concrete dike, and the other opposite side of the semi-submersible platform faces the seawater;

the semi-submersible platform comprises a lower part arranged for submerging seawater and an upper part arranged for exposing seawater; the platform deck at the upper part of the semi-submersible platform is at least provided with a propellant storage tank, an engine mounting bracket and at least one rail for transferring an engine;

the rail is laid at the middle position of the deck of the platform from the coast to the seawater; the propellant storage tank is arranged near the track and used for providing propellant for an engine arranged on the track;

after an engine mounted on the engine mounting support moves to a test run position along the rail, a spray pipe of the engine is arranged towards seawater, and high-temperature fuel gas generated in the test run process is guaranteed to be directly sprayed to the seawater.

2. The offshore shore space engine test stand of claim 1, wherein said rails comprise a first rail and a second rail laid out from shore towards the sea at a mid-position on the platform deck, said first rail being disposed parallel to said second rail; the propellant storage tank is arranged near the first rail and the second rail and used for providing propellant for the engine arranged on the first rail and the second rail.

3. The offshore shore space engine test rig of claim 2, wherein said propellant tanks comprise a horizontal fuel tank and a vertical fuel tank; and a horizontal fuel storage tank is arranged at one end, far away from the test parking space, of the first rail and one end, far away from the test parking space, of the second rail, and is used for short-term storage of liquid propellant, and a vertical fuel storage tank is arranged at the outer sides of the first rail and the second rail and is used for storage of the liquid propellant in the test parking process.

4. Offshore and onshore aerospace engine test stand according to claim 3, wherein the rails are spaced at least 6 meters apart to avoid mutual interference of engines during simultaneous test runs.

5. The offshore and onshore aerospace engine test stand of claim 4, wherein the engine mounting brackets are movably disposed on each rail.

6. The offshore and onshore aerospace engine test bed of claim 1, wherein the semi-submersible platform is provided with a buoyancy tank for water storage at a lower portion; and storing water in the buoyancy tank to increase the gravity of the semi-submersible platform so as to increase the friction force with the gravel layer.

7. The offshore and onshore aerospace engine test bed as claimed in claim 6, wherein the semi-submersible platform is arranged on the gravel layer through a fixed anchor, and an anti-skid layer is further arranged on the part of the buoyancy tank, which is in contact with the gravel layer, so that the semi-submersible platform is stably arranged on the gravel layer during engine test.

8. The offshore shore space engine test rig according to any of claims 1 to 7, wherein the semi-submersible platform is of a "concave" configuration with one side having concave features facing the sea and the opposite side being located proximate to the concrete dam; two outwards extending positions of the concave semi-submersible platform are respectively provided with a lightning protection tower and an apron, and a measurement and control equipment room is arranged at a position close to the concrete dike.

9. The offshore-shore space engine test bed of claim 8, wherein said rails are laid in a recessed position in the middle of said semi-submersible platform in the shape of a Chinese character 'ao', and wherein one end of said rails in the length direction is close to the concrete dam and the other end is close to the sea water; the propellant storage tank is disposed adjacent the track at a location proximate the concrete dam.

10. The offshore shore space engine test rig according to claim 9, wherein said semi-submersible platform further has a power system for powering the location when it is desired to move it; a water spraying facility for cooling the engine is further arranged on the platform deck of the semi-submersible platform; the pumping mechanism of the water spraying facility is arranged in seawater, and the water spraying mechanism is arranged near an engine test parking space.