Bag type storage tank and manufacturing method thereof

Abstract

The invention provides a bag type storage box and a manufacturing method thereof, the bag type storage box comprises a non-metal storage bag, an adding and discharging assembly and a storage box shell, the non-metal bag is located in the storage box shell, and the adding and discharging assembly is located in the non-metal bag; the nonmetal storage bag comprises a fluoroplastic bag and a rubber bag. The adding and discharging assembly comprises a catheter, a liquid end connector and a gas end connector. The rubber bag is nested outside the fluoroplastic bag and wraps the whole fluoroplastic bag in an inner cavity, and a liquid end connector and a gas end connector are arranged at the two ends of the catheter respectively. The inner surface of the non-metal bag and an inner cavity of the adding and discharging assembly are combined to form a liquid storage cavity, and the outer surface of the non-metal bag and the inner surface of the storage box shell jointly define a gas storage cavity. According to the non-metal bag type storage tank, through nesting of the rubber bag and the fluoroplastic bag, the problems that in an existing non-metal storage bag, the compatibility of the rubber bag is poor, and the compactness of the fluoroplastic bag is poor are solved, the long-term storage and management functions of a high-corrosivity propellant are achieved, and the application range of the non-metal bag type storage tank is expanded.

Description

Technical Field

[0001] The present application relates to the field of space navigation technology, and in particular, to a bladder tank and a method for manufacturing the same. Background Art

[0002] As one of the important types of propellant tanks, non-metallic bladder tanks have the characteristics of light structure, simple assembly process, high reliability, low and stable working pressure difference, and detectable product quality. They are widely used in spacecraft.

[0003] As the core component of this type of tank, the characteristics of non-metallic bladders determine the application scope of the tank. At present, non-metallic bladders can be divided into rubber bladders and fluoroplastic bladders according to different materials. Among them, rubber bladders are generally made of butyl rubber with low permeability or mixed rubber with butyl rubber as the main component. Because rubber materials have good elasticity and relatively high strength, they can meet hundreds of times of filling and discharge without structural damage, but they have poor compatibility with highly corrosive oxidants, so their application is limited in two-component systems and systems that require long-term filling and storage or long-term work in space. Although fluoroplastic bladders can be compatible with oxidants for a long time, their material density is poor, and the filling medium will have very serious leakage in a short period of time, so long-term use is greatly limited. In order to expand the application scope of bladder tanks, relevant scholars have proposed and carried out research on rubber-plastic composite bladders, but engineering applications have not yet been realized. At the same time, their manufacturing process is complex, the cycle is long, the cost is high, and there are problems with manufacturing consistency detection. Therefore, it is necessary to propose a non-metallic bladder tank with a simple structure, low manufacturing cost and short cycle that can meet the needs of long-term storage and management of highly corrosive propellants. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present application is to provide a bladder tank and a manufacturing method thereof. According to the present application, a bladder tank includes: a non-metallic storage bladder, a discharge assembly and a tank shell, wherein the non-metallic storage bladder is located in the tank shell cavity, the discharge assembly is located in the non-metallic bladder cavity, the outer surface of the non-metallic bladder and the inner surface of the tank shell form an air storage cavity, and the inner cavity of the non-metallic storage bladder and the inner cavity of the discharge assembly jointly form a liquid storage cavity;

[0005] The non-metallic storage bag is composed of a fluoroplastic bag externally nested and connected with a rubber bag;

[0006] The addition and discharge assembly is composed of a liquid end joint, a conduit and a gas end joint;

[0007] The tank shell comprises: a main shell, a liquid end flange seat, a gas end flange seat, a liquid end flange end cover, a gas end flange end cover and a locking ring; the gas end flange seat is arranged at the lower end of the main shell, and the liquid end flange seat is arranged at the upper end of the main shell;

[0008] The gas end flange cover is connected to the gas end flange seat to form a closed chamber, the gas end joint squeezes and fixes the lower end of the rubber bag in the closed chamber, the gas end joint cooperates with the conduit to squeeze and fix the lower end of the fluoroplastic bag and seal the inside, and the gas end flange cover and the gas end flange seat are provided with a gas channel connected to the gas storage chamber;

[0009] The liquid end flange end cover is connected to the liquid end flange seat, and the locking ring is fixedly connected to the liquid end flange end cover in a threaded form. The locking ring squeezes and fixes the inverted cone openings at the upper ends of the fluoroplastic bag and the rubber bag and seals them internally between the liquid end joint and the liquid end flange seat, and the liquid end flange end cover and the locking ring are provided with a liquid channel connected to the liquid storage cavity.

[0010] Preferably, the lower end of the fluoroplastic bag is a flat opening, which extends between the catheter and the gas end joint. The catheter and the gas end joint are threadedly connected and the flat opening at the lower end of the fluoroplastic bag is squeezed, fixed and sealed internally.

[0011] Preferably, the upper end of the rubber bag extends upward into the liquid end flange seat and then extends along the inner wall of the liquid end flange seat to form a platform opening. The platform opening at the upper end of the rubber bag is squeezed and fixed by the liquid end flange end cover and the liquid end flange seat and is sealed internally.

[0012] Preferably, the upper end opening of the fluoroplastic bag is an inverted cone-shaped opening with a cone angle α between 10° and 30° and a major diameter D1 between 50 mm and 60 mm;

[0013] The lower end opening of the fluoroplastic bag is a flat opening with a diameter D2 of 10 mm to 20 mm;

[0014] The upper end opening of the rubber bag is an "inverted cone + platform + limiting ring" opening with the same cone angle α, a width W between 10 mm and 15 mm, and an interface diameter D3 between 4 mm and 6 mm.

[0015] Preferably, the fluoroplastic capsule wall thickness is 0.3 mm to 0.5 mm;

[0016] The wall thickness of the rubber bag is 1 mm to 1.5 mm.

[0017] Preferably, the fluoroplastic bag and the rubber bag are connected by colloid.

[0018] Preferably, the liquid end connector is a conical cylindrical tube structure, and the cone angle of the conical cylindrical tube is the same as and matched with the cone angle of the fluoroplastic capsule.

[0019] Preferably, the expansion or contraction of the non-metallic bladder realizes the filling or discharge of the propellant;

[0020] The outer surface of the non-metallic bag main body in the expanded state is in contact with the inner surface of the main shell.

[0021] Preferably, a polygonal through hole with a maximum aperture smaller than the through diameter of the liquid port on the liquid end flange end cover is provided at the center of the locking ring;

[0022] The catheter has through holes with diameters of 3 mm to 8 mm uniformly distributed in the circumference.

[0023] The present application also provides a method for manufacturing a bladder tank. According to the method, the above-mentioned bladder tank can be manufactured. The method comprises:

[0024] Step 1: Connect the liquid end connector and the catheter and insert them into the inner cavity of the fluoroplastic bag;

[0025] Step 2: Connect the gas end connector to achieve fixation and sealing, and the connection is completed and located inside the fluoroplastic bag, thus forming a first assembly;

[0026] Step 3: Nesting the assembly 1 into the inner cavity of the rubber bag;

[0027] Step 4: Filling viscose between the fluoroplastic bag and the rubber bag;

[0028] Step 5: Fill the inner cavity through the liquid end connector to ensure that the outer surface of the fluoroplastic bag and the inner surface of the rubber bag are firmly attached to form the second assembly;

[0029] Step 6: Connect the main housing, the liquid end flange seat and the gas end flange seat to form an assembly three, connect the locking ring to the liquid end flange end cover to form an assembly four, and connect the O-ring to the gas end flange end cover to form an assembly five;

[0030] Step 7: Install assembly 2 into assembly 3, and then connect assembly 4 and assembly 5 to assembly 3 using connecting bolts;

[0031] Step 8: Tighten the locking ring downward to ensure the internal sealing of the non-metallic storage bag, and finally form a double-layer nested non-metallic bladder storage tank.

[0032] Compared with the prior art, this application has the following beneficial effects:

[0033] 1. This application solves the problems of poor compatibility of rubber bladders and poor density of fluoroplastic bladders in existing non-metallic storage bladders by nesting rubber bladders and fluoroplastic bladders, realizes the function of long-term storage and management of highly corrosive propellants, and expands the application scope of non-metallic bladder tanks.

[0034] 2. The present application realizes the long-term storage and management functions of the propellant by respectively arranging an inverted cone opening and a flat opening at the upper and lower ends of the fluoroplastic bag, and arranging a sealing and fastening structure at the upper and lower ends of the rubber bag. The non-metallic storage bag has a simple structure, a short manufacturing cycle and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0036] Figure 1 This application mainly shows the overall structure of the bladder tank;

[0037] Figure 2 This application mainly shows the schematic diagram of the upper structure of the bladder tank;

[0038] Figure 3 This application mainly embodies the schematic diagram of the lower structure of the bladder tank.

[0039] As shown in the figure: 1. Non-metallic storage bag; 11. Fluoroplastic bag; 12. Rubber bag; 2. Add-discharge assembly; 21. Liquid end connector; 22. Conduit; 23. Gas end connector; 3. Storage tank shell; 31. Main shell; 32. Liquid end flange seat; 33. Gas end flange seat 34. Liquid end flange end cover; 35. Gas end flange end cover; 36. Locking ring; 4. Gas storage chamber; 5. Liquid storage chamber; 6. Connecting bolts; 7. O-ring. DETAILED DESCRIPTION

[0040] The present application is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present application. These all belong to the protection scope of the present application.

[0041] The bladder type tank provided by the present application comprises: a non-metallic storage bladder 1, a discharge assembly 2 and a tank shell 3, wherein the non-metallic storage bladder 1 is located in the tank shell 3 cavity, the discharge assembly 2 is located in the non-metallic bladder 1 cavity, the outer surface of the non-metallic bladder 1 and the inner surface of the tank shell 3 form an air storage cavity 4, and the inner cavity of the non-metallic storage bladder 1 and the inner cavity of the discharge assembly 2 jointly form a liquid storage cavity 5;

[0042] The non-metallic storage bag is composed of a fluoroplastic bag 11 externally nested and connected to a rubber bag 12;

[0043] The addition and discharge assembly 2 is composed of a liquid end connector 21, a conduit 22 and a gas end connector 23;

[0044] The tank shell 3 includes: a main shell 31, a liquid end flange seat 32, a gas end flange seat 33, a liquid end flange end cover 34, a gas end flange end cover 35 and a locking ring 36; the gas end flange seat 33 is arranged at the lower end of the main shell, and the liquid end flange seat 32 is arranged at the upper end of the main shell 31;

[0045] The gas end flange cover 35 is connected to the gas end flange seat 33 to form a closed chamber, the gas end joint 23 squeezes and fixes the lower end of the rubber bag 12 in the closed chamber, the gas end joint 23 cooperates with the conduit 22 to squeeze and fix the lower end of the fluoroplastic bag 11 and seal the inside, and the gas end flange cover 35 and the gas end flange seat 33 are provided with a gas channel connected to the gas storage chamber 4;

[0046] The liquid end flange end cover 34 is connected to the liquid end flange seat 32, and the locking ring 36 is fixedly connected to the liquid end flange end cover 34 in a threaded form. The locking ring 36 squeezes and fixes the inverted cone openings at the upper ends of the fluoroplastic capsule 11 and the rubber capsule 12 and seals them internally between the liquid end joint 21 and the liquid end flange seat 32, and the liquid end flange end cover 34 and the locking ring 36 are provided with a liquid channel connected to the liquid storage chamber 5.

[0047] The lower end of the fluoroplastic bag 11 is a flat opening, which extends between the catheter 22 and the gas end connector 23. The catheter 22 and the gas end connector 23 are threadedly connected and squeeze the flat opening at the lower end of the fluoroplastic bag 11 to fix and seal it internally.

[0048] The upper end of the rubber bag 12 extends upward into the liquid end flange seat 32 and then extends along the inner wall of the liquid end flange seat 32 to form a platform opening. The platform opening at the upper end of the rubber bag 12 is squeezed and fixed by the liquid end flange end cover 34 and the liquid end flange seat 32 and is sealed internally.

[0049] The upper end opening of the fluoroplastic bag 11 is an inverted cone-shaped opening with a cone angle α between 10° and 30° and a major diameter D1 between 50 mm and 60 mm;

[0050] The lower end opening of the fluoroplastic bag 11 is a flat opening with a diameter D2 of 10 mm to 20 mm;

[0051] The upper opening of the rubber bag 12 is an "inverted cone + platform + limiting ring" opening with the same cone angle α, a width W between 10 mm and 15 mm, and an interface diameter D3 between 4 mm and 6 mm.

[0052] The wall thickness of the fluoroplastic capsule 11 is 0.3 mm to 0.5 mm; the wall thickness of the rubber capsule 12 is 1 mm to 1.5 mm.

[0053] The fluoroplastic bag 11 and the rubber bag 12 are connected by colloid.

[0054] The liquid end connector 21 is a conical cylindrical tube structure, and the cone angle of the conical cylindrical tube is the same as and matched with the cone angle of the fluoroplastic bag 11.

[0055] The expansion or contraction of the non-metallic capsule 1 realizes the filling or discharge of the propellant;

[0056] The outer surface of the main body of the non-metallic bladder 1 in the expanded state is in contact with the inner surface of the main shell 31 .

[0057] A polygonal through hole with a maximum aperture smaller than the through diameter of the liquid port on the liquid end flange cover 34 is provided at the center of the locking ring 36;

[0058] The conduit 22 has through holes uniformly distributed in the circumference with diameters of 3 mm to 8 mm.

[0059] The present application also provides a method for manufacturing a bladder tank. According to the method, the above-mentioned bladder tank can be manufactured. The method comprises:

[0060] Step 1: Connect the liquid end connector 21 and the catheter 22 and insert them into the inner cavity of the fluoroplastic bag 11;

[0061] Step 2: Connect the gas end connector 23 to achieve fixation and sealing, and the connection is completed and located inside the fluoroplastic bag 11, thus forming a combined body 1;

[0062] Step 3: Nesting the assembly 1 into the inner cavity of the rubber bag 12;

[0063] Step 4: Filling glue between the fluoroplastic bag 11 and the rubber bag 12;

[0064] Step 5: Inflate the inner cavity through the liquid end connector 21 to ensure that the outer surface of the fluoroplastic bag 11 and the inner surface of the rubber bag 12 are firmly attached to each other to form a second assembly;

[0065] Step 6: Connect the main housing 31, the liquid end flange seat 32 and the gas end flange seat 33 to form an assembly three, connect the locking ring 36 to the liquid end flange cover 34 to form an assembly four, and connect the O-ring 7 to the gas end flange cover 35 to form an assembly five;

[0066] Step 7: Install assembly 2 into assembly 3, and then use connecting bolts 6 to connect assembly 4 and assembly 5 to assembly 3;

[0067] Step 8: Tighten the locking ring 36 downward to ensure the internal sealing of the non-metallic storage bag 1, and finally form a double-layer nested non-metallic bladder storage box.

[0068] The following is a specific example of this application.

[0069] The present invention provides a bladder-type storage tank, comprising a non-metallic storage bladder 1, a discharge assembly 2 and a storage tank shell 3; the non-metallic storage bladder is composed of a fluoroplastic bladder 11 externally nested and connected to a rubber bladder 12, the discharge assembly 2 is composed of a liquid end connector 21, a conduit 22 and a gas end connector 23 connected, and the storage tank shell 3 is composed of a main shell 31, a liquid end flange seat 32, a gas end flange seat 33, a liquid end flange end cover 34, a gas end flange end cover 35 and a locking ring 36.

[0070] The non-metallic storage bag 1 is located in the cavity of the tank shell 3, and the discharge assembly 2 is located in the cavity of the non-metallic storage bag 1; the outer surface of the non-metallic storage bag 1 and the inner surface of the tank shell 3 constitute an air storage cavity 4, and the inner cavity of the non-metallic storage bag 1 and the inner cavity of the discharge assembly 2 jointly constitute a liquid storage cavity 5.

[0071] Specifically, the fluoroplastic capsule 11 mainly realizes the storage function of highly corrosive propellants, and realizes the propellant management function in combination with the rubber capsule 12. Firstly, considering the material characteristics and manufacturing process of fluoroplastics, in order to ensure that the folding and unfolding process is reliable and without dead folds, the wall thickness t1 of the fluoroplastic capsule 11 needs to be relatively small, generally 0.3 to 0.5 mm. Secondly, in order to achieve its fixation and sealing, an inverted conical opening with a cone angle α of 10 to 30° and a major diameter D1 of 50 to 60 mm is set at its upper end, and a flat opening with a diameter D2 of 10 to 20 mm is set at its lower end.

[0072] Specifically, the rubber bladder 12 mainly realizes the internal sealing of the tank (the sealing between the gas storage chamber 4 and the liquid storage chamber 5), and realizes the propellant management function in combination with the fluoroplastic bladder 11. Since its sealing is directly determined by the wall thickness, the wall thickness t2 of the rubber bladder 12 needs to be relatively large, generally 1 to 1.5 mm. Secondly, in order to achieve its fixation and sealing, an inverted conical opening with the same cone angle and major diameter as the cone angle α and major diameter D1 of the fluoroplastic bladder 11 is set at its upper end, and a platform with a width W1 of 10 to 15 mm is extended outward at the major diameter, and a clamping limit ring with a cross-sectional diameter D3 of 4 to 6 mm is set on the outer edge of the platform; a spherical cylindrical boss with an outer diameter of 20 to 30 mm and a height of 30 to 40 mm is set at its lower end.

[0073] Specifically, the liquid end connector 21 is a conical cylindrical structure, and its cone angle is the same as the cone angle of the fluoroplastic capsule 11, so as to cooperate with the liquid end flange seat 32 to realize the function of pressing the inverted conical opening of the plastic capsule and the rubber capsule 12; in addition, through holes are set on its upper and lower end faces to realize the function of collecting and transporting propellant.

[0074] Specifically, the conduit 22 has holes uniformly distributed in annular direction with diameters of 3 to 8 mm to realize the function of collecting and transporting propellant; in addition, its lower end surface is provided with a platform with an outer diameter 20 to 30 mm larger than the diameter of the flat opening at the lower end of the fluoroplastic bag 11 to cooperate with the gas end connector 23 to realize the function of pressing the flat opening of the plastic bag.

[0075] Specifically, the gas end connector 23 is a spherical cylindrical blind hole structure, and its outer profile is the same as the inner profile of the boss at the lower end of the rubber bag 12. A platform with an inner diameter and an outer diameter that are 5 to 8 mm smaller and 20 to 30 mm larger than the diameter of the flat opening at the lower end of the fluoroplastic bag 11, respectively, is arranged on its upper part to cooperate with the catheter 22 to realize the function of compressing the flat opening of the plastic bag.

[0076] Specifically, a polygonal through hole with a maximum aperture smaller than the through diameter of the liquid port on the liquid end flange end cover 34 is provided at the center of the locking ring 36 to achieve squeezing of the liquid end connector 21 .

[0077] Specifically, the plastic bag and the rubber bag 12 are glued, the conduit 22 and the gas end joint 23 are screwed, the locking ring 36 and the liquid end flange cover 34 are screwed; the liquid end flange cover 34 and the liquid end flange seat 32 are screwed, and the gas end flange cover 35 and the gas end flange seat 33 are screwed;

[0078] The inverted conical openings at the upper ends of the fluoroplastic sac 11 and the rubber sac 12 are squeezed and fixed between the liquid end joint 21 and the liquid end flange seat 32 by a locking ring 36, and the platform opening at the upper end of the rubber sac 12 is squeezed and fixed between the liquid end flange end cover 34 and the liquid end flange seat 32 by a connecting bolt. The flat opening at the lower end of the fluoroplastic sac 11 is squeezed and fixed by a conduit 22 and a gas end joint 23, and the spherical boss at the lower end of the rubber sac 12 is squeezed and fixed between the gas end flange end cover 35 and the gas end flange seat 33 by a connecting bolt; the above connection realizes the internal sealing in the storage tank (i.e., the sealing between the gas storage chamber 4 and the liquid storage chamber 5).

[0079] In addition, the liquid end flange cover 34 and the gas end flange cover 35 are respectively sealed with the liquid end flange seat 32 and the gas end flange seat 33 through the O-ring 7 (i.e., the sealing between the gas storage chamber 4 and the liquid storage chamber 5 and the outside of the storage tank);

[0080] The filling and discharge of the propellant is achieved by the expansion and contraction of the non-metallic bladder 1. The outer surface of the main body of the non-metallic bladder 1 in the expanded state is in contact with the inner surface of the main shell 31 in the tank shell 3.

[0081] In addition, the bladder tank manufacturing method provided in the present application is characterized by comprising the following steps:

[0082] Step 1: Connect the liquid end connector 21 and the catheter 22 and insert them into the inner cavity of the fluoroplastic bag 11, and then connect the gas end connector 23 to achieve fixation and sealing to form a combination body 1;

[0083] Step 2: Nest the assembly 1 into the inner cavity of the rubber bag 12, ensure that the gas end connector 23 is inserted into the lower end boss of the rubber bag 12, and fill the space between the fluoroplastic bag 11 and the rubber bag 12 with glue, inflate the inner cavity through the liquid end connector 21, ensure that the outer surface of the fluoroplastic bag 11 and the inner surface of the rubber bag 12 are firmly attached to form the assembly 2;

[0084] Step 3: Connect the main housing 31, the liquid end flange seat 32, and the gas end flange seat 33 to form an assembly three; connect the locking ring 36 and the O-ring 7 to the liquid end flange cover 34 to form an assembly four, and connect the O-ring 7 to the gas end flange cover 35 to form an assembly five;

[0085] Step 4: Install assembly 2 into assembly 3, and then connect assembly 4 and assembly 5 to assembly 3 using connecting bolts.

[0086] Step 5: Tighten the locking ring 36 downward to ensure the internal sealing of the non-metallic storage bag, and finally form a bladder storage tank.

[0087] When the tank is filled, the propellant is charged into the liquid storage chamber 5 through the liquid port on the liquid end flange cover 34 until it is full, and the non-metallic bag 1 is in the expanded state. When the tank is discharged, the pressurized gas is charged into the gas storage chamber 4 through the gas port on the gas end flange cover 35, and the non-metallic bag 1 gradually changes from the expanded state to the collapsed state under the action of the internal and external pressure difference, thereby squeezing the propellant in the liquid storage chamber 5 and discharging it from the liquid port on the liquid end flange cover 34 through the charging and discharging assembly 2.

[0088] The basic embodiments of the present application are described above. The present application will be described in more detail below in combination with preferred examples and / or variations of the basic embodiments.

[0089] Embodiment 2:

[0090] like Figure 1 As shown, a bladder-type tank is characterized in that it includes a non-metallic bladder 1, a discharge assembly 2 and a tank shell 3;

[0091] The non-metallic storage bag 1 is composed of a fluoroplastic bag 11 externally nested and connected to a rubber bag 12; the addition and discharge assembly 2 is composed of a liquid end connector 21, a conduit 22 and a gas end connector 23; the storage tank shell 3 is composed of a main shell 31, a liquid end flange seat 32, a gas end flange seat 33, a liquid end flange end cover 34, a gas end flange end cover 35, and a locking ring 36;

[0092] The non-metallic storage bag 1 is located in the cavity of the storage tank shell 3, and the addition and discharge assembly 2 is located in the non-metallic storage bag cavity; the outer surface of the non-metallic storage bag 1 and the inner surface of the storage tank shell 3 form an air storage cavity 4, and the inner cavity of the non-metallic storage bag 1 and the inner cavity of the addition and discharge assembly 2 jointly form a liquid storage cavity 5;

[0093] The upper and lower ends of the fluoroplastic bag 11 are respectively provided with an inverted cone opening and a flat opening, and the upper and lower ends of the rubber bag 12 are respectively provided with an inverted cone + platform + limit ring opening and a spherical cylindrical boss;

[0094] The inverted cone-shaped openings at the upper ends of the fluoroplastic sac 11 and the rubber sac 12 are squeezed and fixed by a locking ring 36 and sealed internally between the liquid end joint 21 and the liquid end flange seat 32, the platform opening at the upper end of the rubber sac 12 is squeezed and fixed by a connecting bolt and sealed internally between the liquid end flange end cover 34 and the liquid end flange seat 32, the flat opening at the lower end of the fluoroplastic sac 11 is squeezed and fixed and sealed internally by a conduit 22 and a gas end joint 23, and the spherical boss at the lower end of the rubber sac 12 is squeezed and fixed between the gas end flange end cover 35 and the gas end flange seat 33 by a connecting bolt;

[0095] The liquid end flange cover 34 and the gas end flange cover 35 are respectively sealed with the liquid end flange seat 32 and the gas end flange seat 33 through O-rings 7;

[0096] The filling and discharge of the propellant is achieved by the expansion and contraction of the non-metallic bladder 1. The outer surface of the main body of the non-metallic bladder 1 in the expanded state is in contact with the inner surface of the main shell 31 in the tank shell 3.

[0097] Specifically, in this embodiment, the wall thickness of the fluoroplastic capsule 11 is 0.3 mm, the upper inverted conical opening has a cone angle of 10° and a major diameter of 50 mm, and the lower flat opening has a diameter of 20 mm;

[0098] Specifically, in this embodiment, the wall thickness of the rubber bladder 12 is 1.5 mm, the cone angle and major diameter of the inverted cone opening at the upper end are the same as those of the fluoroplastic bladder 11, the platform opening width is 15 mm, the cross-sectional diameter of the clamping limit ring is 6 mm, and the outer diameter of the spherical cylindrical boss at the lower end is 30 mm and the height is 40 mm;

[0099] Specifically, in this embodiment, the liquid end connector 21 is a conical cylindrical structure, the cone angle of which is the same as that of the fluoroplastic capsule 11, and through holes are provided on the upper and lower end surfaces thereof.

[0100] Specifically, in this embodiment, the catheter 22 has holes uniformly distributed in the annular direction with a diameter of 5 mm, and the lower end surface is provided with a platform with an outer diameter 20 mm larger than the diameter of the flat opening at the lower end of the fluoroplastic bag 11;

[0101] Specifically, in this embodiment, the gas end connector 23 is a spherical cylindrical blind hole structure, whose outer profile is the same as the inner profile of the boss at the lower end of the rubber bag 12, and a platform with an inner diameter and an outer diameter that are 5 mm smaller and 20 mm larger than the flat opening diameter of the lower end of the fluoroplastic bag 11 is provided on its upper part;

[0102] Specifically, in this embodiment, a hexagonal through hole with a maximum aperture smaller than the through diameter of the liquid port on the liquid end flange cover 34 is provided at the center of the locking ring 36;

[0103] Specifically, in this embodiment, the plastic bag and the rubber bag 12 are glued, the conduit 22 and the gas end joint 23 are screwed, the locking ring 36 and the liquid end flange end cover 34 are screwed; the liquid end flange end cover 34 and the liquid end flange seat 32 are screwed, and the gas end flange end cover 35 and the gas end flange seat 33 are screwed.

[0104] Compared with the prior art, the shielding cover physical isolation device with wireless interference suppression function described in the present invention can not only isolate external co-frequency interference and other electromagnetic interference, and solve the problem that the RF stand-alone signal is unstable or even lost when the measurement system is subjected to external interference during integrated comprehensive tests; it can also weaken the internal electromagnetic echo, and avoid the situation where the RF stand-alone components on the arrow are damaged due to excessive electromagnetic echo inside the shielding cover; it can further replace the traditional test method of manually adjusting the ground antenna, greatly reducing manpower and time costs, and improving test efficiency and work reliability.

[0105] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0106] The above describes the specific embodiments of the present application. It should be understood that the present application is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the substantive content of the present application. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A bladder tank, characterized in that: include: A non-metallic storage bag (1), a discharge assembly (2) and a tank shell (3), wherein the non-metallic storage bag (1) is located in the tank shell (3) cavity, the discharge assembly (2) is located in the non-metallic bag (1) cavity, the outer surface of the non-metallic bag (1) and the inner surface of the tank shell (3) form an air storage cavity (4), and the inner cavity of the non-metallic storage bag (1) and the inner cavity of the discharge assembly (2) jointly form a liquid storage cavity (5); The non-metallic storage bag is composed of a fluoroplastic bag (11) externally nested and connected to a rubber bag (12); The addition and discharge assembly (2) is composed of a liquid end joint (21), a conduit (22) and a gas end joint (23); The tank shell (3) comprises: a main shell (31), a liquid end flange seat (32), a gas end flange seat (33), a liquid end flange end cover (34), a gas end flange end cover (35) and a locking ring (36); the gas end flange seat (33) is arranged at the lower end of the main shell, and the liquid end flange seat (32) is arranged at the upper end of the main shell (31); The gas end flange cover (35) is connected to the gas end flange seat (33) to form a closed chamber, the gas end joint (23) squeezes and fixes the lower end of the rubber bag (12) in the closed chamber, the gas end joint (23) cooperates with the conduit (22) to squeeze and fix the lower end of the fluoroplastic bag (11) and seal the inside, and the gas end flange cover (35) and the gas end flange seat (33) are provided with a gas channel connected to the gas storage chamber (4); The liquid end flange cover (34) is connected to the liquid end flange seat (32), and the locking ring (36) is fixedly connected to the liquid end flange cover (34) in a threaded form. The locking ring (36) squeezes and fixes the inverted cone openings at the upper ends of the fluoroplastic bag (11) and the rubber bag (12) and seals them internally between the liquid end joint (21) and the liquid end flange seat (32), and the liquid end flange cover (34) and the locking ring (36) are provided with a liquid channel connected to the liquid storage chamber (5).

2. The bladder tank according to claim 1, characterized in that: The lower end of the fluoroplastic bag (11) is a flat opening, and the flat opening at the lower end of the fluoroplastic bag (11) extends between the conduit (22) and the gas end connector (23). The conduit (22) and the gas end connector (23) are threadedly connected and the flat opening at the lower end of the fluoroplastic bag (11) is squeezed, fixed and sealed internally.

3. The bladder tank according to claim 1, characterized in that: The upper end of the rubber bag (12) extends upward into the liquid end flange seat (32) and then extends along the inner wall of the liquid end flange seat (32) to form a platform opening. The platform opening at the upper end of the rubber bag (12) is squeezed and fixed by the liquid end flange end cover (34) and the liquid end flange seat (32) and is sealed internally.

4. The bladder tank according to claim 1, characterized in that: The upper end opening of the fluoroplastic bag (11) is an inverted cone-shaped opening with a cone angle α between 10° and 30° and a major diameter D1 between 50 mm and 60 mm; The lower end opening of the fluoroplastic bag (11) is a flat opening with a diameter D2 of 10 mm to 20 mm; The upper end opening of the rubber bag (12) is an "inverted cone + platform + limiting ring" opening with a cone angle of α, a width W between 10 mm and 15 mm, and an interface diameter D3 between 4 mm and 6 mm.

5. The bladder tank according to claim 1, characterized in that: The wall thickness of the fluoroplastic capsule (11) is 0.3 mm to 0.5 mm; The wall thickness of the rubber bag (12) is 1 mm to 1.5 mm.

6. The bladder tank according to claim 1, characterized in that: The fluoroplastic bag (11) and the rubber bag (12) are connected by colloid.

7. The bladder tank according to claim 1, characterized in that: The liquid end connector (21) is a conical cylindrical tube structure, and the conical cylindrical tube has a cone angle that is the same as and matches the cone angle of the fluoroplastic bag (11).

8. The bladder tank according to claim 1, characterized in that: The expansion or contraction of the non-metallic bag (1) enables the filling or discharge of the propellant; The outer surface of the main body of the non-metallic bag (1) in the expanded state is in contact with the inner surface of the main shell (31).

9. The bladder tank according to claim 1, characterized in that: A polygonal through hole having a maximum hole diameter smaller than the through diameter of the liquid port on the liquid end flange cover (34) is arranged at the center of the locking ring (36); The conduit (22) has through holes with diameters of 3 mm to 8 mm uniformly distributed in the circumference.

10. A method for manufacturing a bladder tank, characterized in that: According to the bladder tank manufacturing method, the bladder tank according to claims 1 to 9 can be manufactured, and the bladder tank manufacturing method comprises: Step 1: Connect the liquid end connector (21) and the catheter (22) and insert them into the inner cavity of the fluoroplastic bag (11); Step 2: Connect the gas end connector (23) to achieve fixation and sealing, and the connection is completed and located inside the fluoroplastic bag (11), thus forming a first assembly; Step 3: Nesting the assembly 1 into the inner cavity of the rubber bag (12); Step 4: Filling glue between the fluoroplastic bag (11) and the rubber bag (12); Step 5: Inflate the inner cavity through the liquid end connector (21) to ensure that the outer surface of the fluoroplastic bag (11) and the inner surface of the rubber bag (12) are firmly attached to each other to form a second assembly; Step 6: Connect the main housing (31), the liquid end flange seat (32) and the gas end flange seat (33) to form an assembly three, connect the locking ring (36) to the liquid end flange end cover (34) to form an assembly four, and connect the O-ring (7) to the gas end flange end cover (35) to form an assembly five; Step 7: Install assembly 2 into assembly 3, and then use connecting bolts (6) to connect assembly 4 and assembly 5 to assembly 3; Step 8: Tighten the locking ring (36) downward to ensure the internal sealing of the non-metallic storage bag (1), and finally form a double-layer nested non-metallic bag-type storage box.

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