Vacuum electron beam welding heat dissipation device for rubber diaphragm storage tank

Abstract

The present disclosure relates to the field of aerospace technology, and specifically to a vacuum electron beam welding heat dissipation device for a rubber diaphragm tank, the welding heat dissipation device comprising: an outer wrapping cover shell, which is hemispherical and arranged on the outer side of the upper hemispherical shell; an outer welding cover ring, which is annular and arranged on the outer edge of the opening of the outer wrapping cover shell; a honeycomb pressure plate, which is an annular structure with a plurality of hexagonal through holes, arranged between the upper hemispherical shell and the outer welding cover ring; a hexagonal probe, which is movably arranged in the hexagonal through hole of the honeycomb pressure plate; and a fixed clamping ring, which is fixedly arranged at the welding point between the upper hemispherical shell and the lower hemispherical shell and extends to the inside of the lower hemispherical shell. The present disclosure forms a probe cluster composed of hexagonal probes by arranging a honeycomb pressure plate and a plurality of hexagonal probes, thereby achieving an effect of approximate surface contact, increasing the contact area between the rubber diaphragm tank shell and the outer welding cover ring, and improving the heat dissipation efficiency of the upper hemispherical shell.

Description

Technical Field

[0001] The present disclosure relates to the field of aerospace technology, and in particular to a vacuum electron beam welding heat dissipation device for a rubber diaphragm tank. Background Art

[0002] The rubber diaphragm tank is a key component used in spacecraft or rockets to store fuel, oxidizer or other liquid media. It is mainly composed of a metal shell and a built-in rubber bladder assembly. These tanks play a vital role in space missions. They are not only related to the power supply of spacecraft, but also directly affect the success or failure of space missions. In the manufacturing process of rubber diaphragm tanks, it is necessary to weld the tanks. Vacuum electron beam welding is widely used in the manufacture of rubber diaphragm tanks due to its high-precision welding position, narrow heat-affected zone and minimal deformation of the weld. The principle is to bombard the surface of the workpiece with high-speed electrons in a vacuum, thereby generating heat to melt the workpiece for welding.

[0003] When welding in a vacuum, the rubber diaphragm in the rubber diaphragm tank needs to be protected. In a vacuum environment, the traditional air heat conduction method fails. Although some heat can be conducted through thermal radiation, the efficiency of heat conduction by thermal radiation is too low to meet the protection needs of the rubber diaphragm. The heat dissipation at the weld of the rubber diaphragm tank is mainly transferred to the welding tooling through contact heat conduction, that is, the larger the contact area, the higher the heat dissipation efficiency. The rubber diaphragm is not resistant to high temperatures. How to protect the rubber diaphragm while welding the tank is one of the difficulties in manufacturing the rubber diaphragm tank. In order to prevent the rubber diaphragm from being damaged during welding, the current manufacturing process of the rubber diaphragm tank usually wraps a copper cover outside the tank. However, because the cover cannot fit completely with the tank shell, the actual heat dissipation contact area is insufficient, so the heat shared by the cover is not ideal, and its heat dissipation efficiency is low. The rubber diaphragm is still likely to be burned and damaged during welding and leak. Burns and damage to the rubber diaphragm may cause the rubber diaphragm tank to be scrapped, or seriously affect the safe operation of the spacecraft. In addition, this type of cover has limited applicability and can only be used for one type of product. When the shape and style of the tank changes, the cover needs to be redesigned and manufactured to adapt to the changed tank style, which greatly increases the manufacturing cost of the tank. Summary of the invention

[0004] In order to solve the problems in the related art, an embodiment of the present disclosure provides a vacuum electron beam welding heat dissipation device for a rubber diaphragm tank.

[0005] In a first aspect, a vacuum electron beam welding heat dissipation device for a rubber diaphragm tank is provided in an embodiment of the present disclosure, wherein the rubber diaphragm tank comprises an upper hemispherical shell and a lower hemispherical shell, wherein a rubber diaphragm is arranged in the upper hemispherical shell, and wherein the welding heat dissipation device comprises:

[0006] An outer wrapping cover shell, adapted to the shape of the upper hemispherical shell, and used to cover the outer surface of the upper hemispherical shell during welding;

[0007] The outer welding cover ring is annular and is arranged at the outer edge of the opening of the outer wrapping cover shell; the thickness of the outer welding cover ring is greater than the thickness of the outer wrapping cover shell;

[0008] The honeycomb pressure plate is a plate-like structure having a plurality of hexagonal through holes, and is disposed between the upper hemispherical shell and the outer welding cover ring. When the outer wrapping cover covers the outer surface of the upper hemispherical shell, the honeycomb pressure plate surrounds the upper hemispherical shell, and the hexagonal through holes include a middle section and two limit sections at both ends.

[0009] A plurality of hexagonal probes, wherein the hexagonal probes include an elastic component and a first end and a second end arranged at both ends of the elastic component, wherein the elastic component is arranged in the hexagonal through hole of the honeycomb pressure plate along the axial direction of the hexagonal through hole, the first end and the second end are both hexagonal pyramids, the upper bottom surface of the hexagonal pyramid is arranged toward the elastic component, and the middle part of the elastic component is fixedly connected to the hexagonal through hole, and when the outer wrapping cover shell covers the outer surface of the upper hemispherical shell, the elastic component presses the first end of the hexagonal probe toward the upper hemispherical shell, the lower bottom surface of the hexagonal pyramid of the first end contacts the upper hemispherical shell, and the lower bottom surface of the hexagonal pyramid of the second end of the hexagonal probe contacts the outer welding cover ring, and the limiting section of the hexagonal through hole is used to limit the hexagonal pyramid so that the lower bottom surface of the hexagonal pyramid will not sink into the interior of the honeycomb pressure plate;

[0010] A fixed clamping ring is fixedly arranged at the welding position between the upper hemispherical shell and the lower hemispherical shell and extends toward the interior of the lower hemispherical shell, and is used for fixing the rubber diaphragm.

[0011] According to an embodiment of the present disclosure, the lower bottom surface of the second end portion of the hexagonal probe is fixedly connected to the inner surface of the outer welding cover ring.

[0012] According to an embodiment of the present disclosure, two ends of the elastic component are fixedly connected to the first end portion and the second end portion respectively.

[0013] According to an embodiment of the present disclosure, a connecting sleeve structure is arranged between the first end and the second end, and the connecting sleeve structure includes a sleeve and a sliding rod arranged in the sleeve and capable of sliding relative to the sleeve, and the ends of the sliding rod and the sleeve are respectively connected to the first end and the second end, so that the first end and the second end can slide relative to each other.

[0014] According to an embodiment of the present disclosure, a clamping portion is provided at the first end of the fixed clamping ring, and the clamping portion is provided with a clamping opening facing the rubber diaphragm, for fixing the rubber diaphragm;

[0015] The second end of the fixed clamp ring is provided with a welding portion, which is a thin circular ring and is arranged between the opening of the upper hemispherical shell and the opening of the lower hemispherical shell, and is used to fix the fixed clamp ring to the upper hemispherical shell and the lower hemispherical shell;

[0016] The clamping portion and the welding portion are connected via an extended thin-walled ring, and the extended thin-walled ring is used to shield the heat generated when the upper hemispherical shell and the lower hemispherical shell are welded.

[0017] According to an embodiment of the present disclosure, a heat insulating ring is provided at a side of the second end of the elongated thin-walled ring close to the rubber diaphragm to prevent the rubber diaphragm from directly contacting the second end of the elongated thin-walled ring.

[0018] According to an embodiment of the present disclosure, the outer wrapping cover shell, the outer welding cover ring, and the honeycomb pressure plate are made of red copper.

[0019] According to an embodiment of the present disclosure, the hexagonal probe is made of magnesium alloy.

[0020] According to an embodiment of the present disclosure, the elastic component is spindle-shaped;

[0021] According to an embodiment of the present disclosure, the elastic component includes a truncated cone spiral spring.

[0022] According to an embodiment of the present disclosure, the diameter of the circumscribed circle of the hexagonal through hole is 2.5 mm.

[0023] According to the technical solution provided by the embodiment of the present disclosure, a vacuum electron beam welding heat dissipation device for a rubber diaphragm tank is disclosed, wherein the rubber diaphragm tank comprises an upper hemispherical shell and a lower hemispherical shell, wherein a rubber diaphragm is arranged in the upper hemispherical shell, and wherein the welding heat dissipation device comprises: an outer wrapping cover shell, adapted to the shape of the upper hemispherical shell and used to cover the outer surface of the upper hemispherical shell during welding; an outer welding cover ring, which is annular and arranged at the outer edge of the opening of the outer wrapping cover shell; the thickness of the outer welding cover ring is greater than the thickness of the outer wrapping cover shell; a honeycomb pressure plate, which is a plate-like structure having a plurality of hexagonal through holes, and is arranged between the upper hemispherical shell and the outer welding cover ring, and when the outer wrapping cover shell covers the outer surface of the upper hemispherical shell, the honeycomb pressure plate surrounds the upper hemispherical shell, and the hexagonal through holes include a middle section and two limit sections located at both ends; a plurality of hexagonal probes, wherein the hexagonal probes include an elastic component and a plurality of limit sections located at both ends of the elastic component The first end and the second end of the elastic component are arranged in the hexagonal through hole of the honeycomb pressure plate along the axial direction of the hexagonal through hole, the first end and the second end are both hexagonal pyramids, the upper bottom surface of the hexagonal pyramid is arranged toward the elastic component, and the middle part of the elastic component is fixedly connected to the hexagonal through hole, when the outer wrapping cover shell covers the outer surface of the upper hemispherical shell, the elastic component presses the first end of the hexagonal probe toward the upper hemispherical shell, the lower bottom surface of the hexagonal pyramid of the first end contacts the upper hemispherical shell, and the lower bottom surface of the hexagonal pyramid of the second end of the hexagonal probe contacts the outer welding cover ring, and the limiting section of the hexagonal through hole is used to limit the hexagonal pyramid so that the lower bottom surface of the hexagonal pyramid will not sink into the interior of the honeycomb pressure plate; a fixed clamping ring is fixedly arranged at the welding point between the upper hemispherical shell and the lower hemispherical shell and extends to the interior of the lower hemispherical shell, for fixing the rubber diaphragm.

[0024] According to the technical solution disclosed in the present invention, in order to meet the heat dissipation requirements of the rubber diaphragm tank welding under a vacuum environment, a probe cluster composed of hexagonal probes is formed by setting a honeycomb pressure plate and a plurality of hexagonal probes, so as to achieve the effect of approximate surface contact, greatly increase the contact area between the rubber diaphragm tank shell and the outer welding cover ring, improve the heat dissipation efficiency of the upper hemisphere shell, conduct heat to the outer welding cover ring and the outer wrapping cover shell through the hexagonal probe and the honeycomb pressure plate, and ensure that the rubber diaphragm is not affected by high temperature. In addition, the probe sleeve, the probe slide rod and the elastic component in the hexagonal probe cooperate with each other, so that the hexagonal probe can be stretched and retracted along the axial direction, and automatically matched according to the shape of the outer welding cover ring and the rubber diaphragm tank shell, so that the hexagonal probe can be in full contact with the outer welding cover ring and the rubber diaphragm tank shell as much as possible, increase the heat dissipation contact area, reduce the shape matching requirements and processing accuracy requirements of the outer welding cover ring and the rubber diaphragm tank, increase the adaptation range of the welding heat dissipation device, and reduce the manufacturing cost of the rubber diaphragm tank.

[0025] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objectives and advantages of the present disclosure will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0027] Figure 1 A schematic structural diagram of a rubber diaphragm tank and a rubber diaphragm tank welding heat dissipation device according to an embodiment of the present disclosure is shown.

[0028] Figure 2 A schematic structural diagram of a welding area of ​​a rubber diaphragm tank welding heat dissipation device according to an embodiment of the present disclosure is shown.

[0029] Figure 3 A schematic structural diagram of a honeycomb pressure plate in a rubber diaphragm tank according to an embodiment of the present disclosure is shown.

[0030] Figure 4 A schematic structural diagram of a hexagonal probe in a rubber diaphragm tank welding heat dissipation device according to an embodiment of the present disclosure is shown.

[0031] Figure 5 A schematic structural diagram of a hexagonal probe in a rubber diaphragm tank welding heat dissipation device according to another embodiment of the present disclosure is shown.

[0032] Figure 6 A schematic structural diagram of a fixed clamping ring in a rubber diaphragm tank welding heat dissipation device according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0033] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. In addition, for the sake of clarity, parts not related to the description of the exemplary embodiments are omitted in the accompanying drawings.

[0034] In the present disclosure, it should be understood that terms such as "include" or "have" are intended to indicate the presence of features, numbers, steps, behaviors, components, parts, or a combination thereof disclosed in the present specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, behaviors, components, parts, or a combination thereof exist or are added.

[0035] It should also be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] The rubber diaphragm tank is a key component used in spacecraft or rockets to store fuel, oxidizer or other liquid media. It is mainly composed of a metal shell and a built-in rubber bladder assembly. These tanks play a vital role in space missions. They are not only related to the power supply of spacecraft, but also directly affect the success or failure of space missions. In the manufacturing process of rubber diaphragm tanks, it is necessary to weld the tanks. Vacuum electron beam welding is widely used in the manufacture of rubber diaphragm tanks due to its high-precision welding position, narrow heat-affected zone and minimal deformation of the weld. The principle is to bombard the surface of the workpiece with high-speed electrons in a vacuum, thereby generating heat to melt the workpiece for welding.

[0037] When welding in a vacuum, the rubber diaphragm in the rubber diaphragm tank needs to be protected. In a vacuum environment, the traditional air heat conduction method fails. Although some heat can be conducted through thermal radiation, the efficiency of heat conduction by thermal radiation is too low to meet the protection needs of the rubber diaphragm. The heat dissipation at the weld of the rubber diaphragm tank is mainly transferred to the welding tooling through contact heat conduction, that is, the larger the contact area, the higher the heat dissipation efficiency. The rubber diaphragm is not resistant to high temperatures. How to protect the rubber diaphragm while welding the tank is one of the difficulties in manufacturing the rubber diaphragm tank. In order to prevent the rubber diaphragm from being damaged during welding, the current manufacturing process of the rubber diaphragm tank usually wraps a copper cover outside the tank. However, because the cover cannot fit completely with the tank shell, the actual heat dissipation contact area is insufficient, so the heat shared by the cover is not ideal, and its heat dissipation efficiency is low. The rubber diaphragm is still likely to be burned and damaged during welding and leak. Burns and damage to the rubber diaphragm may cause the rubber diaphragm tank to be scrapped, or seriously affect the safe operation of the spacecraft. In addition, this type of cover has limited applicability and can only be used for one type of product. When the shape and style of the tank changes, the cover needs to be redesigned and manufactured to adapt to the changed tank style, which greatly increases the manufacturing cost of the tank.

[0038] In order to solve the above technical problems, the present invention discloses a vacuum electron beam welding heat dissipation device for a rubber diaphragm tank. The rubber diaphragm tank includes an upper hemispherical shell and a lower hemispherical shell, a rubber diaphragm is arranged in the upper hemispherical shell, and the welding heat dissipation device includes: an outer wrapping cover shell is hemispherical and is arranged on the outer side of the upper hemispherical shell; an outer welding cover ring is annular and is arranged on the outer edge of the opening of the outer wrapping cover shell, and the thickness of the outer welding cover ring is greater than that of the outer wrapping cover shell; a honeycomb pressure plate is an annular structure with a plurality of hexagonal through holes, and is arranged between the upper hemispherical shell and the outer welding cover ring; a plurality of hexagonal probes are movably arranged in the hexagonal through holes of the honeycomb pressure plate, and can move axially along the hexagonal through holes; the first end of the hexagonal probe contacts the upper hemispherical shell, and the second end of the hexagonal probe contacts the outer welding cover ring; both ends of the hexagonal probe are provided with raised edges, and the raised edges protrude radially toward the hexagonal probe in the shape of a hexagonal pyramid, and the The raised edge cooperates with the hexagonal through hole to movably fix the hexagonal probe to the honeycomb pressure plate; a fixed clamp ring is fixedly arranged at the welding point between the upper hemispherical shell and the lower hemispherical shell and extends to the interior of the lower hemispherical shell to fix the rubber diaphragm; an elastic component is also included between the hexagonal probe and the honeycomb pressure plate, and the elastic component is spindle-shaped. The middle part of the elastic component is fixedly connected to the hexagonal through hole, and the hexagonal probe passes through the center of the elastic component; the hexagonal probe includes a probe sleeve and a probe slide rod, the second end of the probe slide rod is movably arranged inside the probe sleeve, and the inner diameter of the probe sleeve is the same as the outer diameter of the probe slide rod; the first end of the probe slide rod is fixedly connected to the first end of the elastic component, and the second end of the probe sleeve is fixedly connected to the second end of the elastic component.

[0039] According to the technical solution disclosed in the present invention, in order to meet the heat dissipation requirements of the rubber diaphragm tank welding under a vacuum environment, a honeycomb pressure plate and a plurality of hexagonal probes are arranged between the outer welding cover ring and the upper hemispherical shell, forming a probe cluster composed of hexagonal probes, achieving an effect of approximate surface contact, greatly increasing the contact area between the rubber diaphragm tank shell and the outer welding cover ring, and being able to improve the heat dissipation efficiency of the upper hemispherical shell, and conducting the heat of the rubber diaphragm tank shell to the outer welding cover ring and the outer wrapping cover shell through the hexagonal probe and the honeycomb pressure plate, ensuring that the rubber diaphragm is not affected by high temperature. In addition, the probe sleeve, the probe slide rod and the elastic component in the hexagonal probe cooperate with each other, and the hexagonal probe can be extended and retracted along the axial direction, and the shape of the outer welding cover ring and the rubber diaphragm tank shell can be automatically matched, so that the hexagonal probe is in full contact with the outer welding cover ring and the rubber diaphragm tank shell as much as possible, thereby increasing the heat dissipation contact area, reducing the shape matching requirements and processing accuracy requirements of the outer welding cover ring and the rubber diaphragm tank, increasing the adaptation range of the welding heat dissipation device, and reducing the manufacturing cost of the rubber diaphragm tank.

[0040] Figure 1 A schematic structural diagram of a rubber diaphragm tank and a rubber diaphragm tank welding heat dissipation device according to an embodiment of the present disclosure is shown. Figure 2 A schematic structural diagram of a welding area of ​​a rubber diaphragm tank welding heat dissipation device according to an embodiment of the present disclosure is shown.

[0041] like Figure 1 and Figure 2 As shown, the rubber diaphragm tank includes an upper hemispherical shell and a lower hemispherical shell, a rubber diaphragm is arranged in the upper hemispherical shell, and the welding heat dissipation device includes an outer wrapping cover shell, an outer welding cover ring, a honeycomb pressure plate, a plurality of hexagonal probes and a fixed clamping ring.

[0042] like Figure 2 As shown, the outer covering shell is adapted to the shape of the upper hemispherical shell and is used to cover the outer surface of the upper hemispherical shell during welding. The outer covering shell is used to fix the upper hemispherical shell of the rubber diaphragm tank. In addition, the outer covering shell is made of metal with good thermal conductivity to absorb the heat generated by the rubber diaphragm tank during welding.

[0043] like Figure 2 As shown, the outer welding cover ring is annular and is arranged at the outer edge of the opening of the outer wrapping shell. The thickness of the outer welding cover ring is greater than the thickness of the outer wrapping shell. The outer welding cover ring is arranged at the outer edge of the opening of the outer wrapping shell and does not cover the welding point of the upper hemispherical shell and the lower hemispherical shell. It is used to absorb the heat generated during the welding of the upper hemispherical shell through the hexagonal probe and conduct it to the outer wrapping shell. Since the air heat conduction fails in a vacuum environment, the outer welding cover ring and the outer wrapping shell cannot dissipate heat through air flow. Therefore, the outer welding cover ring can be thickened to enhance the heat conduction in the vacuum environment.

[0044] The honeycomb pressure plate is a plate-like structure with a plurality of hexagonal through holes, and is disposed between the upper hemispherical shell and the outer welding cover ring. When the outer wrapping cover covers the outer surface of the upper hemispherical shell, the honeycomb pressure plate surrounds the upper hemispherical shell, and the hexagonal through hole includes a middle section and two limit sections at both ends. According to an embodiment of the present disclosure, in addition to being disposed between the upper hemispherical shell and the outer welding cover ring, the honeycomb pressure plate can also be further extended to between the outer wrapping cover and the upper hemispherical shell to enhance heat conduction between the outer wrapping cover and the upper hemispherical shell.

[0045] Figure 3 A schematic structural diagram of a honeycomb pressure plate in a rubber diaphragm tank according to an embodiment of the present disclosure is shown.

[0046] like Figure 3As shown, the surface of the honeycomb pressure plate has a plurality of hexagonal through holes arranged in a honeycomb shape, and each hexagonal through hole shares one side with the adjacent hexagonal through hole. In a vacuum welding environment, the larger the contact area, the faster the heat conduction speed and the better the heat dissipation capacity. The hexagonal through holes are arranged in a honeycomb shape to maximize the proportion of the area of ​​the honeycomb pressure plate occupied by the hexagonal through holes, that is, to increase the maximum heat dissipation contact area between the hexagonal probe and the upper hemispherical shell and the outer welding cover ring. Further, the honeycomb pressure plate has dense hexagonal through holes and a thin thickness, which can produce elastic deformation, adapt to rubber diaphragm tanks of different shapes, and increase the matching degree of the honeycomb pressure plate with rubber diaphragm tanks of different shapes. Further, the honeycomb pressure plate can be arranged between the upper hemispherical shell, the outer welding cover ring and the outer wrapping cover shell, further increasing the heat dissipation area of ​​the upper hemispherical shell and the outer wrapping cover shell.

[0047] A plurality of hexagonal probes, wherein the hexagonal probes include an elastic component and a first end and a second end arranged at both ends of the elastic component, wherein the elastic component is arranged in the hexagonal through hole of the honeycomb pressure plate along the axial direction of the hexagonal through hole, wherein the first end and the second end are both hexagonal pyramids, wherein the upper bottom surface of the hexagonal pyramid is arranged toward the elastic component, and the middle part of the elastic component is fixedly connected to the hexagonal through hole, and when the outer wrapping cover covers the outer surface of the upper hemispherical shell, the elastic component presses the first end of the hexagonal probe toward the upper hemispherical shell, wherein the lower bottom surface of the hexagonal pyramid of the first end contacts the upper hemispherical shell, and the lower bottom surface of the hexagonal pyramid of the second end of the hexagonal probe contacts the outer welding cover ring, and the limiting section of the hexagonal through hole is used to limit the hexagonal pyramid so that the lower bottom surface of the hexagonal pyramid will not sink into the interior of the honeycomb pressure plate. Further, the two ends of the elastic component are fixedly connected to the first end and the second end, respectively. When the honeycomb pressing plate further extends to between the outer wrapping cover shell and the upper hemispherical shell, the lower bottom surface of the hexagonal pyramid of the second end portion of the hexagonal probe contacts the outer wrapping cover shell.

[0048] Figure 4 FIG. 1 is a schematic diagram showing the structure of a hexagonal probe in a rubber diaphragm tank welding heat dissipation device according to an embodiment of the present disclosure. Figure 4As shown, the two ends of the elastic component in the hexagonal probe are provided with a first end and a second end, the first end is in contact with the upper hemispherical shell, and the second end is in contact with the outer welding cover ring. When performing vacuum welding operation, the heat of the upper hemispherical shell is sequentially transferred to the first end, the elastic component, the second end and the outer welding cover ring. In the manufacturing scenario of the rubber diaphragm tank, due to the inevitable existence of manufacturing errors, there are inevitably gaps of random sizes between the upper hemispherical shell and the outer welding cover ring and the outer wrapping cover shell, which is also the main reason for the poor heat conduction effect between the upper hemispherical shell and the outer welding cover ring. Therefore, the length of the hexagonal probe needs to be adjusted according to the gap size at each location between the upper hemispherical shell and the outer welding cover ring to adapt to gaps of different lengths. When the outer wrapping cover covers the upper hemispherical shell, the elastic component of the hexagonal probe is compressed by force, and the first end is in close contact with the upper hemispherical shell under the drive of the elastic component. Furthermore, the limiting section of the hexagonal through hole is a protrusion arranged inside the hexagonal through hole. When the first end and / or the second end moves to the inside of the hexagonal through hole to the limiting section, it is blocked by the limiting section, so that the first end and / or the second end cannot continue to move into the inside of the hexagonal through hole, preventing the lower bottom surface of the hexagonal pyramid of the first end and / or the second end from sinking into the honeycomb pressure plate, affecting the thermal conductivity effect of the hexagonal probe.

[0049] A hexagonal probe is arranged between the upper hemispherical shell and the outer welding cover ring, so that each hexagonal probe can contact the upper hemispherical shell and the outer welding cover ring respectively. When the number of hexagonal probes is large and the density is large, a hexagonal probe cluster is formed. The point contact between the hexagonal probe and the upper hemispherical shell and the outer welding cover ring respectively approaches surface contact as the number of hexagonal probes increases, that is, the contact area between the upper hemispherical shell and the outer welding cover ring is increased, so as to avoid the situation that the upper hemispherical shell and the outer welding cover ring cannot form a good contact due to poor shape matching accuracy, and the upper hemispherical shell temperature rises rapidly and damages the rubber diaphragm due to insufficient contact area and poor heat dissipation effect. In addition, the first end and the second end of the hexagonal probe can move along the axial direction of the hexagonal through hole, so that it can realize automatic adaptation according to the shape of the upper hemispherical shell, and improve the adaptability to rubber diaphragm tanks of different shapes.

[0050] In addition, after the heat of the upper hemispherical shell is conducted to the first end of the hexagonal probe, since the elastic component of the hexagonal probe is connected to the honeycomb pressure plate, the heat can also be conducted to the honeycomb pressure plate, and then conducted to the adjacent hexagonal probe through the honeycomb pressure plate, further improving the heat dissipation performance.

[0051] In the field of aerospace, quality control and high integration are important indicators for aircraft components. Therefore, in the manufacturing process of the rubber diaphragm tank, too much heat insulation material cannot be used to protect the rubber diaphragm, and the rubber diaphragm needs to be protected from the perspective of increasing the heat dissipation capacity of the rubber diaphragm tank. The present invention provides a honeycomb pressure plate and a hexagonal probe between the outer welding cover ring and the upper hemispherical shell, while ensuring the weight requirement of the rubber diaphragm tank, without adding too many supporting heat dissipation systems to the tank welding tooling, and by increasing the contact area between the upper hemispherical shell and the outer welding cover ring as much as possible, it simultaneously achieves multiple technical effects of lightweighting the rubber diaphragm tank, simplifying the welding tooling, and reusing the heat dissipation device, thereby reducing the manufacturing cost of the rubber diaphragm tank.

[0052] According to an embodiment of the present disclosure, the lower bottom surface of the second end of the hexagonal probe is fixedly connected to the inner surface of the outer welding cover ring. The second end of the hexagonal probe is fixedly connected to the inner surface of the outer welding cover ring, so that the hexagonal probe, the honeycomb pressure plate and the outer welding cover ring are fixed to the inner surface of the outer welding cover ring. When the outer wrapping cover covers the upper hemispherical shell, the first end of the hexagonal probe fixed to the outer welding cover ring can automatically adapt and fit the upper hemispherical shell to achieve heat dissipation of the upper hemispherical shell.

[0053] Figure 5 FIG. 2 is a schematic diagram showing the structure of a hexagonal probe in a rubber diaphragm tank welding heat dissipation device according to another embodiment of the present disclosure. Figure 5 As shown, a connecting sleeve structure is arranged between the first end and the second end, and the connecting sleeve structure includes a sleeve and a sliding rod arranged in the sleeve and capable of sliding relative to the sleeve, and the ends of the sliding rod and the sleeve are respectively connected to the first end and the second end, so that the first end and the second end can slide relative to each other. The sleeve structure is arranged between the first end and the second end, and the sleeve contacts the sliding rod and can slide relative to each other, and the sliding direction is consistent with the axial direction of the hexagonal through hole, which can fix the relative movement direction of the first end and the second end, so that the first end and the second end can only move along the axial direction of the hexagonal through hole. Moreover, the heat absorbed by the first end from the upper hemispherical shell can be transferred from the contact point between the sliding rod and the sleeve to the second end. Compared with heat conduction by the elastic component alone, the sleeve structure and the elastic component conduct heat at the same time, which can improve the heat conduction speed and heat conduction efficiency of the hexagonal probe.

[0054] like Figure 2As shown, the fixed clamp ring is fixedly arranged at the welding point between the upper hemispherical shell and the lower hemispherical shell and extends to the interior of the lower hemispherical shell, and is used to fix the rubber diaphragm. The rubber diaphragm in the rubber diaphragm tank is used to divide the interior of the tank into a gas propellant chamber and a liquid propellant chamber, effectively blocking the mixing of gas and liquid, ensuring the physical separation of the two, and under the pressure difference between the two chambers, the rubber diaphragm can flip from the gas chamber side to the liquid chamber side to achieve the discharge of liquid propellant, so the rubber diaphragm is often arranged in half of the rubber diaphragm tank. The fixed clamp ring is used to fix the rubber diaphragm in the upper hemispherical shell. Furthermore, the first end of the fixed clamp ring is used to fix the rubber diaphragm, and the second end of the fixed clamp ring is fixedly arranged between the openings of the upper hemispherical shell and the lower hemispherical shell, and is clamped between the upper hemispherical shell and the lower hemispherical shell when the rubber diaphragm tank is welded.

[0055] Figure 6 FIG. 2 is a schematic diagram showing a structure of a fixed clamp ring in a rubber diaphragm tank welding heat dissipation device according to an embodiment of the present disclosure. Figure 6 As shown, the first end of the fixed clamp ring is provided with a clamping portion, and the clamping portion is provided with a clamping opening facing the rubber diaphragm, which is used to fix the rubber diaphragm. Since the heat resistance of rubber is poor, if the rubber diaphragm is directly placed in the tank, the rubber diaphragm will contact the tank shell when the tank is welded, and the rubber diaphragm is easily damaged by the high temperature generated by welding. Therefore, it is necessary to first fix the rubber diaphragm on the fixed clamp ring, and then weld the fixed clamp ring to the tank shell to reduce the impact of the high welding temperature on the rubber diaphragm. The clamping portion includes a first clamp and a second clamp, and the first end of the first clamp and the first end of the second clamp are fixedly connected to provide a clamping force, and a cavity with a clamping opening is formed between the second end of the first clamp and the second end of the second clamp to fix the rubber diaphragm.

[0056] The second end of the fixed clamp ring is provided with a welding part, which is a thin ring, and the shape is consistent with the opening of the upper hemispherical shell and the opening of the lower hemispherical shell, and is arranged between the opening of the upper hemispherical shell and the opening of the lower hemispherical shell, and is used to fix the fixed clamp ring to the upper hemispherical shell and the lower hemispherical shell. Before the upper hemispherical shell and the lower hemispherical shell are welded, the welding part of the fixed clamp ring is placed between the opening of the upper hemispherical shell and the lower hemispherical shell, and the upper hemispherical shell, the welding part and the lower hemispherical shell are welded into a whole, and the installation of the fixed clamp ring and the closure of the rubber diaphragm tank are achieved at the same time. The welding part is provided on the fixed clamp ring, and is welded together with the upper hemispherical shell and the lower hemispherical shell. There is no need to perform additional welding steps on the fixed clamp ring. The technical effects of the fixed rubber diaphragm and the combined rubber diaphragm tank can be achieved through one welding, which reduces the manufacturing cost of the rubber diaphragm tank.

[0057] The clamping part and the welding part are connected by an extended thin-walled ring, and the extended thin-walled ring is used to shield the heat generated when the upper hemispherical shell and the lower hemispherical shell are welded. The extended thin-walled ring is arranged between the clamping part and the welding part, and a rubber diaphragm is arranged on the side of the extended thin-walled ring away from the lower hemispherical shell. Since the rubber diaphragm in the lower hemispherical shell is short, the additional heat dissipation device will increase the manufacturing cost of the rubber diaphragm tank. However, during electron beam welding, the heat generated will be emitted from the welding position to the inside of the tank in the form of heat radiation, causing damage to the rubber diaphragm. Therefore, an extended thin-walled ring is arranged to shield the rubber diaphragm, and the rubber diaphragm and the clamping part are kept away from the welding position and the lower hemispherical shell to avoid damage to the rubber diaphragm due to the high temperature generated by welding. Furthermore, by changing the width of the extended thin-walled ring, the position of the rubber diaphragm in the rubber diaphragm tank can be adjusted to adapt to the fuel ratio requirements of different aerospace missions.

[0058] According to the embodiments of the present disclosure, Figure 6 As shown, a heat-insulating ring is provided at the second end of the elongated thin-walled ring near the rubber diaphragm to prevent the rubber diaphragm from directly contacting the second end of the elongated thin-walled ring. Since the second end of the elongated thin-walled ring is close to the welding part, it is greatly affected by high-temperature heat conduction during welding. Therefore, the first end of the elongated thin-walled ring extends to the side of the lower hemispherical shell to keep the rubber diaphragm away from the welding part to prevent the high temperature of the welding part from affecting the rubber diaphragm. A heat-insulating ring is provided between the rubber diaphragm and the second end of the elongated thin-walled ring to prevent the rubber diaphragm from being damaged due to contact with the elongated thin-walled ring.

[0059] According to the embodiment of the present disclosure, the working principle of the fixed clamp ring is that when the upper hemispherical shell and the lower hemispherical shell are combined for electron beam welding, the fixed clamp ring and the rubber diaphragm are placed in the upper hemispherical shell, and the welding part of the fixed clamp ring is placed between the openings of the upper hemispherical shell and the lower hemispherical shell, and then welding is performed. The heat generated during the welding process is conducted to the elongated thin-walled ring through the welding part, and the heat is absorbed by the elongated thin-walled ring to reduce the heat conducted to the clamping part, and the clamping part and the insulation ring cooperate to keep the rubber diaphragm away from the elongated thin-walled ring, so as to prevent the rubber diaphragm from contacting the elongated thin-walled ring and causing damage to the rubber diaphragm.

[0060] According to an embodiment of the present disclosure, the outer wrapping shell, the outer welding cover ring, and the honeycomb pressure plate are made of red copper. The outer wrapping shell, the outer welding cover ring, and the honeycomb pressure plate in the welding heat dissipation device need to quickly remove the heat generated by welding of the upper hemispherical shell, and need to be made of materials with excellent thermal conductivity. Red copper has good thermal conductivity, plasticity, and corrosion resistance, so red copper can be used as the manufacturing material of the outer wrapping shell, the outer welding cover ring, and the honeycomb pressure plate.

[0061] According to the embodiment of the present disclosure, the material of the hexagonal probe is magnesium alloy. The hexagonal probe is arranged between the upper hemisphere shell and the outer weld cover ring to perform the function of rapid heat conduction. Therefore, the hexagonal probe needs good thermal conductivity and impact resistance to avoid deformation and damage or reduced thermal conductivity when the upper hemisphere shell and the outer weld cover ring are combined. Magnesium alloy is an alloy composed of magnesium and other elements. It has high strength, good thermal conductivity, impact resistance and corrosion resistance. Magnesium alloy can be used as the material of the hexagonal probe.

[0062] According to an embodiment of the present disclosure, the elastic component is spindle-shaped. The spindle-shaped elastic component helps to reduce the friction between the elastic component and the honeycomb pressure plate when the first end and the second end move relative to the honeycomb pressure plate, so that the hexagonal probe moves with less resistance and more smoothly. The truncated cone scroll spring has the advantage of a small size and can be used in small space scenarios. Furthermore, the elastic component is a truncated cone scroll spring. The elastic component can be two truncated cone scroll springs with roots arranged opposite to each other, so that the two truncated cone scroll springs are spindle-shaped as a whole, which is used to adjust the relative position of the first end and the second end relative to the honeycomb pressure plate.

[0063] According to an embodiment of the present disclosure, the diameter of the circumscribed circle of the hexagonal through hole is 2.5 mm, the thickness of the honeycomb pressure plate can be adjusted according to different storage tanks, and the thickness is between 2 mm and 5 mm, and the diameter of the circumscribed circle of the lower bottom surface of the hexagonal pyramid at the first end and the lower bottom surface of the hexagonal pyramid at the second end of the hexagonal probe is 2.6 mm to 2.8 mm.

[0064] According to the embodiments of the present disclosure, the working principle of the vacuum electron beam welding heat dissipation device of the rubber diaphragm tank is as follows: the welding environment is set to vacuum, the outer wrapping shell provided with an outer welding cover ring is fixed on the welding fixture, the honeycomb pressure plate equipped with multiple hexagonal probes is placed inside the outer welding cover ring, the upper hemispherical shell is placed in the outer wrapping shell, the rubber diaphragm is set in the upper hemispherical shell, and the rubber diaphragm is inserted into the clamping part of the fixed clamping ring for fixing, and then the welding part of the fixed clamping ring and the lower hemispherical shell are sequentially connected with the upper hemispherical shell and then welded. The honeycomb pressure plate and the hexagonal probes provided in the hexagonal through holes of the honeycomb pressure plate achieve dense point contact through the clustering effect, and can form a contact mode of approximate surface contact between the upper hemispherical shell and the outer welding cover ring.

[0065] Compared with the prior art, the welding heat dissipation device disclosed in the present invention can significantly increase the contact area between the upper hemispherical shell and the outer welding cover ring, and significantly reduce the maximum temperature of the heat-affected zone at the welding point. Specifically, the material of the rubber diaphragm is fluororubber and nitrile rubber, and the melting point is 300℃-350℃. The welding heat dissipation device disclosed in the present invention can achieve in a vacuum environment that the maximum temperature within 10mm of the heat-affected zone at the welding point does not exceed 180℃, and the maximum temperature outside 10mm of the heat-affected zone at the welding point does not exceed 130℃, which is much lower than the melting point of the rubber diaphragm, and can achieve the technical effect of effectively protecting the rubber diaphragm.

[0066] In addition, due to the needs of aerospace, the weight increase of the rubber diaphragm tank needs to be strictly limited, so too much insulation material cannot be added inside the tank. According to the embodiment of the present disclosure, by increasing the heat dissipation area through the honeycomb pressure plate and multiple hexagonal probes, it is achieved that there is no need to add too much insulation material in the rubber diaphragm tank, and only through the fixed pressure clamp ring and the insulation ring with relatively light weight, the temperature requirement for protecting the rubber diaphragm can be met, and the technical effect of protecting the rubber diaphragm under the premise of effective weight control is achieved.

[0067] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present disclosure is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other.

Claims

1. A vacuum electron beam welding heat dissipation device for a rubber diaphragm tank, the rubber diaphragm tank comprising an upper hemispherical shell and a lower hemispherical shell, a rubber diaphragm is arranged in the upper hemispherical shell, characterized in that: The welding heat dissipation device comprises: An outer wrapping cover shell, adapted to the shape of the upper hemispherical shell, and used to cover the outer surface of the upper hemispherical shell during welding; The outer welding cover ring is annular and is arranged at the outer edge of the opening of the outer wrapping cover shell; the thickness of the outer welding cover ring is greater than the thickness of the outer wrapping cover shell; The honeycomb pressure plate is a plate-like structure having a plurality of hexagonal through holes, and is disposed between the upper hemispherical shell and the outer welding cover ring. When the outer wrapping cover covers the outer surface of the upper hemispherical shell, the honeycomb pressure plate surrounds the upper hemispherical shell, and the hexagonal through holes include a middle section and two limit sections at both ends. A plurality of hexagonal probes, wherein the hexagonal probes include an elastic component and a first end and a second end arranged at both ends of the elastic component, wherein the elastic component is arranged in the hexagonal through hole of the honeycomb pressure plate along the axial direction of the hexagonal through hole, the first end and the second end are both hexagonal pyramids, the upper bottom surface of the hexagonal pyramid is arranged toward the elastic component, and the middle part of the elastic component is fixedly connected to the hexagonal through hole, and when the outer wrapping cover shell covers the outer surface of the upper hemispherical shell, the elastic component presses the first end of the hexagonal probe toward the upper hemispherical shell, the lower bottom surface of the hexagonal pyramid of the first end contacts the upper hemispherical shell, and the lower bottom surface of the hexagonal pyramid of the second end of the hexagonal probe contacts the outer welding cover ring, and the limiting section of the hexagonal through hole is used to limit the hexagonal pyramid so that the lower bottom surface of the hexagonal pyramid will not sink into the interior of the honeycomb pressure plate; A fixed clamping ring is fixedly arranged at the welding point between the upper hemispherical shell and the lower hemispherical shell and extends toward the interior of the lower hemispherical shell, and is used to fix the rubber diaphragm. A clamping portion is provided at the first end of the fixed clamping ring, and the clamping portion is provided with a clamping opening facing the rubber diaphragm, and is used to fix the rubber diaphragm; a welding portion is provided at the second end of the fixed clamping ring, and the welding portion is a thin circular ring, which is arranged between the opening of the upper hemispherical shell and the opening of the lower hemispherical shell, and is used to fix the fixed clamping ring to the upper hemispherical shell and the lower hemispherical shell; the clamping portion and the welding portion are connected by an extended thin-walled ring.

2. The welding heat dissipation device according to claim 1, characterized in that: The lower bottom surface of the second end of the hexagonal probe is fixedly connected to the inner surface of the outer welding cover ring.

3. The welding heat dissipation device according to claim 1, characterized in that: Two ends of the elastic component are fixedly connected to the first end portion and the second end portion respectively.

4. The welding heat dissipation device according to claim 1, characterized in that: A connecting sleeve structure is arranged between the first end and the second end, and the connecting sleeve structure includes a sleeve and a sliding rod arranged in the sleeve and capable of sliding relative to the sleeve, and the ends of the sliding rod and the sleeve are respectively connected to the first end and the second end, so that the first end and the second end can slide relative to each other.

5. The welding heat dissipation device according to claim 1, characterized in that: A heat-insulating ring is provided on a side of the second end of the elongated thin-walled ring close to the rubber diaphragm, so as to prevent the rubber diaphragm from directly contacting the second end of the elongated thin-walled ring.

6. The welding heat dissipation device according to claim 1, characterized in that: The outer wrapping shell, the outer welding cover ring, and the honeycomb pressing plate are made of copper; and / or The hexagonal probe is made of magnesium alloy.

7. The welding heat dissipation device according to claim 1, characterized in that: The honeycomb pressure plate is also arranged between the upper hemispherical shell and the outer wrapping cover shell. When the outer wrapping cover shell covers the outer surface of the upper hemispherical shell, the lower bottom surface of the hexagonal pyramid of the second end of the hexagonal probe located between the upper hemispherical shell and the outer wrapping cover shell contacts the outer wrapping cover shell.

8. The welding heat dissipation device according to claim 1, characterized in that: The elastic component is spindle-shaped.

9. The welding heat dissipation device according to claim 1, characterized in that: The elastic component includes a truncated cone scroll spring.

10. The welding heat dissipation device according to claim 1, characterized in that: The diameter of the circumscribed circle of the hexagonal through hole is 2.5 mm.

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