A storage container for liquid propellant compatibility experiments

Abstract

The application relates to a storage container for liquid propellant compatibility experiment; solves the problem that the container is difficult to adapt to the working environment requirement in the experiment; and comprises a metal cylinder, a suspension device and a sealing device; the suspension device comprises a hook and a positioning support plate for mounting the hook; the positioning support plate is overlapped on the inner edge of the upper end surface of the metal cylinder, the positioning support plate is provided with a filling hole and a gas exhaust hole; the sealing device comprises a reinforcing ring, a sealing cover, an O-shaped sealing ring, a reinforcing screw cover and a straight-through interface; the outer wall of the reinforcing ring is provided with external threads, the lower end of the inner side wall of the reinforcing ring is fixedly connected with the outer edge of the upper end of the outer side wall of the metal cylinder; the lower part of the outer side wall of the sealing cover is provided with a sealing groove for mounting the O-shaped sealing ring, the upper part of the outer side wall of the sealing cover is provided with an outward extending flange, the top of the sealing cover is provided with an upper step, the sealing cover is provided with a pressure relief hole for mounting the straight-through interface; the lower part of the outer side wall of the sealing cover is sealingly connected with the inner wall of the reinforcing ring; the lower end of the reinforcing screw cover is opened, the upper end is provided with an upper through hole, and the reinforcing screw cover is screwed with the reinforcing ring.

Description

TECHNICAL FIELD

[0001] The present application relates to a container for liquid propellant and its contact material compatibility immersion experiment, in particular to a storage container for liquid propellant compatibility experiment. BACKGROUND

[0002] During the production, transportation, storage and use of liquid propellant, the various materials in contact with the liquid propellant have certain physical and chemical effects, such as corrosion of metal materials, swelling of non-metallic materials, etc. In addition, the contact of metal and non-metal materials with kerosene will also have a certain influence on the chemical composition, physical and chemical properties and use performance of kerosene. Therefore, the compatibility of materials and liquid propellant needs to be tested and analyzed to provide technical support for the safe use of liquid propellant and the design of power system products.

[0003] The previous liquid propellant compatibility experiment is generally carried out with the aid of other liquid propellant storage containers, and it is difficult to meet the requirements of various complex environments during the experiment. SUMMARY

[0004] The present application is to solve the technical problem that the previous liquid propellant compatibility experiment is generally carried out with the aid of other liquid propellant storage containers, which is difficult to adapt to the working environment requirements of the liquid propellant and its contact material compatibility test experiment, and proposes a storage container for liquid propellant compatibility experiment, which can be applied to the test of liquid propellant compatibility in complex environment.

[0005] The technical scheme of the present application is:

[0006] A storage container for liquid propellant compatibility experiment, characterized in that:

[0007] It comprises a metal cylinder, a suspension device and a sealing device;

[0008] The suspension device comprises a plurality of hooks for suspending test pieces and a positioning support plate for mounting the hooks; the positioning support plate is lapped on the inner edge of the upper end surface of the metal cylinder, and at least one filling hole and at least one exhaust hole are provided on the positioning support plate;

[0009] The sealing device comprises a reinforcing ring, a sealing cover, an O-shaped sealing ring, a reinforcing screw cover and a straight-through interface;

[0010] The wall thickness of the reinforcing ring is greater than that of the metal cylinder, the outer wall of the reinforcing ring is provided with external threads, and the lower end of the inner side wall of the reinforcing ring is fixedly connected with the outer edge of the upper end of the metal cylinder;

[0011] The lower part of the outer side wall of the sealing cover is provided with a sealing groove, the upper part of the outer side wall of the sealing cover is provided with an outward extension, the top of the sealing cover is provided with an upper step, and the sealing cover is provided with a pressure relief hole penetrating upward and downward; the O-shaped sealing ring is arranged in the sealing groove; the lower part of the outer side wall of the sealing cover is sealed and connected with the inner wall of the reinforcing ring through the O-shaped sealing ring; the lower bottom surface of the sealing cover is in contact with the upper bottom surface of the positioning support plate or is provided with a small gap to ensure that the positioning support plate does not fall off;

[0012] The reinforcing screw cover is a lower opening cylindrical structure, and the upper end face is provided with an upper through hole matched with the upper step; the inner wall of the reinforcing screw cover is provided with an inner thread matched with the outer thread of the reinforcing ring, and the upper end of the reinforcing screw cover is pressed against the upper surface of the outward extension of the sealing cover after the reinforcing screw cover is screwed with the reinforcing ring; the straight-through interface is communicated with the pressure relief hole, and the lower surface of the outward extension of the sealing cover is in contact with the upper surface of the reinforcing ring or has a gap; the unique sealing structure has good sealing effect, ensures the sealing property of the storage container, ensures the safety of the experiment when used at high temperature, and can be applied to a high pressure environment (can be relieved after high pressure test), ensures the safety of the experiment after used at high pressure, the O-shaped sealing ring arranged between the sealing cover and the reinforcing ring enables the storage container to be directly placed in different temperature control environments (especially high temperature and low temperature environments), and the storage container in the application has a small volume.

[0013] Further, the O-shaped sealing ring is a fluorine rubber sealing ring, and the fluorine rubber sealing ring has good compatibility with the liquid propellant.

[0014] Further, the lower end of the reinforcing ring is matched and welded with the upper end of the metal cylinder through a step structure.

[0015] Further, the hook comprises a first straight handle and a head arranged at the lower end of the first straight handle, and the upper end of the first straight handle is fixedly connected with the positioning support plate.

[0016] Further, the head comprises a semicircular hook and a second straight handle, one end of the semicircular hook is connected with the lower end of the first straight handle, the other end is connected with the lower end of the second straight handle, and the upper end of the second straight handle is a free end.

[0017] Further, the lower bottom surface of the sealing cover is provided with a containing cavity in the middle, and the pressure relief hole is communicated with the containing cavity.

[0018] Further, the containing cavity is a semispherical cavity.

[0019] Further, the suspension device further comprises a handle arranged at the upper end surface of the positioning support plate, and the handle is located in the containing cavity.

[0020] Further, the metal cylinder is a thin-walled metal structure.

[0021] The beneficial effects of the present application are as follows:

[0022] 1. The present application designs a new type of storage container for liquid propellant compatibility experiment, which has better sealing effect through a unique sealing structure compared with the existing compatibility experiment soaking container (ordinary glass ground bottle, high-pressure storage tank), ensures the sealing of the storage container, ensures the safety of the experiment when used at high temperature, and is provided with a pressure relief hole, can be applied to high-pressure environment (after high-pressure test, pressure relief), ensures the safety of the experiment after use at high pressure, and the O-shaped sealing ring arranged between the sealing cover and the reinforcing ring makes the storage container can be directly placed in different temperature control environment (especially high temperature and low temperature environment), and the storage container in the present application has small volume.

[0023] 2. The sealing device of the storage container provided by the present application uses an O-shaped sealing ring to seal the reinforcing screw cover, which is simpler to use and has better sealing effect compared with general plug caps and ordinary bolt gasket sealing design, and the sealing cover is designed with a universal hard sealing straight-through interface for venting, inflating, connecting pressure gauges or valves, etc., which can release the internal pressure after high-temperature test, ensure the safety of the container after disassembly, and through the universal hard sealing straight-through interface, other measurement control devices can be connected.

[0024] 3. The storage container provided by the present application designs a reinforcing screw cover and a reinforcing ring, and the reinforcing screw cover and the reinforcing ring fixedly connected on the metal cylinder are connected through threads, which can ensure the relative position of the container sealing cover and the metal cylinder through the reinforcing screw cover, effectively lock the sealing cover, and ensure the sealing effect of the sealing cover and the metal cylinder.

[0025] 4. In the present application, a metal cylinder with a thin wall structure is arranged, and a reinforcing ring is arranged on the outer wall of the metal cylinder, which can meet the characteristics of small overall structure volume and meet the strength requirements of the entire metal cylinder.

[0026] 5. In the present application, a special test piece suspension device is designed, which can be used for suspending the soaking test piece.

[0027] 6. In the present application, a hook with a U-shaped lower end is designed, which can ensure that the test piece does not fall off when the container is tilted by 90 degrees.

[0028] 7. In the present application, the lower end of the reinforcing ring is fixedly connected with the outer edge of the outer wall of the metal cylinder, and the positioning support plate is lapped on the inner edge of the upper end of the metal cylinder, and a step structure is formed between the inner edge of the side wall of the metal cylinder and the inner wall of the reinforcing ring, which is used to limit the height of the positioning support plate in the metal cylinder.

[0029] 8、The reinforcing screw cover is connected with the metal cylinder through the reinforcing ring by the threaded connection, so that the sealing cover is prevented from being pushed out due to the change of internal pressure. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a half-section structure schematic diagram of an embodiment of the storage container for liquid propellant compatibility experiment of the present application;

[0031] Figure 2 is a full-section structure schematic diagram of an embodiment of the storage container for liquid propellant compatibility experiment of the present application;

[0032] Figure 3 is a structure schematic diagram of the metal cylinder and the reinforcing ring in the embodiment of the present application;

[0033] Figure 4 is a front view sectional view of the suspension device in the embodiment of the present application;

[0034] Figure 5 is a top view of the suspension device in the embodiment of the present application;

[0035] Figure 6 is a half-section structure schematic diagram of the sealing cover in the embodiment of the present application;

[0036] In the figure, 1 is a metal cylinder; 2 is a suspension device; 21 is a positioning support plate; 22 is a filling hole; 23 is an exhaust hole; 24 is a hook; 25 is a first straight handle; 26 is a head; 27 is a semicircular hook; 28 is a second straight handle; 29 is a handle; 3 is a sealing device; 31 is a reinforcing ring; 32 is a sealing cover; 33 is an O-shaped sealing ring; 34 is a reinforcing screw cover; 35 is a straight-through interface. DETAILED DESCRIPTION

[0037] In the present application, "up" and "down" are described from the perspective of Figure 1 and Figure 2 .

[0038] As shown in Figure 1 and Figure 2 , the present application proposes a storage container for liquid propellant compatibility experiment, which comprises a metal cylinder 1, a suspension device 2 and a sealing device 3.

[0039] The functions of each component are as follows:

[0040] The metal cylinder 1 is used for storing liquid propellant, the suspension device 2 is used for suspending a test piece, the sealing device 3 is used for sealing the metal cylinder 1, and the position of the suspension device 2 is fixed to prevent displacement of the suspension device 2 after installation.

[0041] The composition and connection mode of each component are as follows:

[0042] The hanging device 2 comprises a positioning support plate 21, three hooks 24 and a handle 29; the sealing device 3 comprises a reinforcing ring 31, a sealing cover 32, an O-shaped sealing ring 33, a reinforcing screw cover 34 and a straight-through interface 35.

[0043] In order to reduce the volume of the storage container, the metal cylinder 1 adopts a thin-walled metal structure, and based on the thin-walled metal structure, if a step surface of the positioning support plate 21 is directly arranged on the upper end surface of the thin-walled metal cylinder 1, the strength of the metal cylinder 1 will be affected, in order to solve the above problem, as shown in the figure, Figure 3 In the present application, the reinforcing ring 31 is arranged, the upper end of the metal cylinder 1 is provided with a step surface in which a small-diameter section is arranged upwards, the lower end of the reinforcing ring 31 is internally provided with a step structure corresponding to the step surface of the metal cylinder 1, the lower end of the reinforcing ring 31 is externally sleeved and fixed on the upper end of the metal cylinder 1, and the step surface of the metal cylinder 1 is matched with the step surface of the reinforcing ring 31, the inner diameter of the reinforcing ring 31 is larger than the inner diameter of the metal cylinder 1, so that a limiting platform is formed between the inner wall of the reinforcing ring 31 and the upper end surface of the metal cylinder 1, as shown in the figure, Figure 1 As shown in the figure, Figure 2 The inner diameter of the reinforcing ring 31 is matched with the outer diameter of the positioning support plate 21, the upper end surface of the metal cylinder 1 is overlapped by the positioning support plate 21, the outer diameter of the reinforcing ring 31 is larger than the outer diameter of the metal cylinder 1, and the thickness of the reinforcing ring 31 is larger than the wall thickness of the metal cylinder 1.

[0044] As shown in the figure, Figure 2 The sealing cover 32 comprises a first cylinder, a second cylinder and a third cylinder which are coaxially connected in sequence from bottom to top, the outer diameter of the first cylinder is smaller than the outer diameter of the second cylinder, the outer diameter of the second cylinder is larger than the outer diameter of the third cylinder, so that the edge of the second cylinder forms an outward extension, an upper step is formed between the second cylinder and the third cylinder, the outer portion of the first cylinder is provided with a sealing groove, the first cylinder is inserted into the inside of the reinforcing ring 31, the lower bottom surface of the first cylinder is in contact with the positioning support plate 21, the O-shaped sealing ring 33 is arranged in the sealing groove, and is used for sealing the reinforcing ring 31 and the first cylinder, at this time, the lower surface of the outward extension is in contact with the upper surface of the reinforcing ring 31.

[0045] As shown in the figure, Figure 3 The outer wall of the reinforcing ring 31 is provided with external threads, as shown in the figure, Figure 6 The reinforcing screw cover 34 is a cylindrical structure with an open lower end, and the upper end surface thereof is provided with an upper through hole, so that the upper bottom surface of the reinforcing screw cover 34 is matched with the upper step, the inner wall of the reinforcing screw cover 34 is provided with internal threads matched with the external threads of the outer wall of the reinforcing ring 31, the reinforcing screw cover 34 is sleeved outside the sealing cover 32 and the reinforcing ring 31, and is threadedly connected with the reinforcing ring 31, the third step passes through the upper through hole of the reinforcing screw cover 34 and is arranged outside the reinforcing screw cover 34, and the upper inner bottom surface of the reinforcing screw cover 34 is in contact with the step surface of the upper step.

[0046] As Figure 2 shown, the middle of the sealing cover 32 is provided with a hemispherical accommodating cavity, and the middle of the sealing cover 32 is provided with an upper and lower through pressure relief hole communicated with the accommodating cavity, and a straight-through interface 35 is installed at the pressure relief hole, and the straight-through interface 35 is used for connecting a pressure gauge, connecting a valve, exhausting or inflating.

[0047] As Figure 5 shown, the positioning support plate 21 is symmetrically provided with an adding hole 22 and an exhaust hole 23 at the center thereof, and the three hooks 24 are uniformly welded at the lower end face of the positioning support plate 21 along any one support thereof, and one of the hooks 24 is arranged at the center.

[0048] As Figure 4 shown, in order to prevent the test piece from falling off when the container is subjected to a 90° dumping operation, the structure of the hook 24 is uniquely designed, the hook 24 comprises a first straight handle 25 and a head 26, the head 26 comprises a second straight handle 28 and a semicircular hook 27, the upper end of the first straight handle 25 is connected with the lower end face of the positioning support plate 21, the lower end of the first straight handle 25 is connected with one end of the semicircular hook 27, the other end of the semicircular hook 27 is connected with the lower end of the second straight handle 28, and the upper end of the second straight handle 28 is a free end, through the arrangement of the above structure, the lower end of the hook 24 forms a U-shaped structure, and a handle 29 is welded on the upper end face of the positioning support plate 21 and located in the accommodating cavity.

[0049] The O-shaped sealing ring 33 is made of fluorine rubber O-shaped sealing ring or O-shaped sealing ring made of other materials which have good compatibility with the experimental sample.

[0050] The outer surface of the reinforcing screw cover 34 is processed by using a networked knurling technology to increase the friction force when being twisted.

[0051] The metal cylinder body 1, the positioning support plate 21 and the sealing cover 32 are made of materials which have good compatibility with the liquid propellant.

[0052] The wall thickness of the metal cylinder body 1 is designed to be fast in heat conduction and high in pressure bearing capacity.

[0053] The storage container for the liquid propellant compatibility experiment provided by the application can have the following several ways of injecting liquid propellant:

[0054] 1. Assemble the storage container, remove the valve installed at the straight-through interface, vacuumize the storage container, and then suck the propellant into the inside of the storage container through suction force;

[0055] 2. Assemble the storage container without covering the sealing cover, add the propellant, and then assemble the sealing cover and the reinforcing screw cover.

[0056] 3. Use the liquid level difference or the pressure difference to add.

Claims

1. A storage container for liquid propellant compatibility experiments, characterized in that: it comprises a metal cylinder (1), a hanging device (2) and a sealing device (3); the hanging device (2) comprises a plurality of hooks (24) for hanging test pieces and a positioning support plate (21) for mounting the hooks (24); the positioning support plate (21) is lapped on the inner edge of the upper end face of the metal cylinder (1), and at least one filling hole (22) and at least one exhaust hole (23) are provided on the positioning support plate (21); the sealing device (3) comprises a reinforcing ring (31), a sealing cover (32), an O-shaped sealing ring (33), a reinforcing screw cover (34) and a straight-through interface (35); the wall thickness of the reinforcing ring (31) is greater than that of the metal cylinder (1), the outer wall of the reinforcing ring (31) is provided with external threads, and the lower end of the inner wall of the reinforcing ring (31) is fixedly connected with the outer wall of the upper end of the metal cylinder (1); the lower part of the outer wall of the sealing cover (32) is provided with a sealing groove, the upper part of the outer wall of the sealing cover (32) is provided with an outward extending edge, the top of the sealing cover (32) is provided with an upper step, and the sealing cover (32) is provided with a pressure relief hole extending upward and downward; the O-shaped sealing ring (33) is arranged in the sealing groove; the lower part of the outer wall of the sealing cover (32) is sealingly connected with the inner wall of the reinforcing ring (31) through the O-shaped sealing ring (33); the reinforcing screw cover (34) is a lower open cylindrical structure, the upper end face of the reinforcing screw cover (34) is provided with an upper through hole matched with the upper step, the inner wall of the reinforcing screw cover (34) is provided with internal threads matched with the external threads of the reinforcing ring (31), and the upper end of the reinforcing screw cover (34) is pressed against the outward extending edge of the sealing cover (32) after the reinforcing screw cover (34) is screwed with the reinforcing ring (31); the straight-through interface (35) is in communication with the pressure relief hole. The O-shaped sealing ring (33) is a fluorine rubber sealing ring. The lower end of the reinforcing ring (31) is step structure matched and welded with the upper end of the metal cylinder (1). The hook (24) comprises a first straight handle (25) and a head (26) arranged at the lower end of the first straight handle (25), and the upper end of the first straight handle (25) is fixedly connected with the positioning support plate (21). The head (26) comprises a semicircular hook (27) and a second straight handle (28), one end of the semicircular hook (27) is connected with the lower end of the first straight handle (25), the other end is connected with the lower end of the second straight handle (28), and the upper end of the second straight handle (28) is a free end. The lower bottom surface of the sealing cover (32) is provided with a receiving cavity, and the pressure relief hole is in communication with the receiving cavity. The receiving cavity is a semispherical cavity.

2. A storage container for liquid propellant compatibility experiments according to claim 1, characterized in that: The hanging device (2) further comprises a handle (29) arranged on the upper end face of the positioning support plate (21), and the handle (29) is located in the receiving cavity.

3. A storage container for liquid propellant compatibility experiments according to claim 2, characterized in that: The metal cylinder (1) is a thin-walled metal structure.

4. A storage container for use in liquid propellant compatibility testing according to any one of claims 1 to 3, characterized in that: ​ 5. A storage container for liquid propellant compatibility experiments according to claim 4, characterized in that: ​ 6. A storage container for liquid propellant compatibility experiments according to claim 5, characterized in that: ​ 7. A storage container for liquid propellant compatibility experiments according to claim 6, characterized in that: ​ 8. A storage container for liquid propellant compatibility experiments according to claim 7, characterized in that: ​ 9. A storage container for liquid propellant compatibility experiments according to claim 8, characterized in that: ​

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