Supporting mechanism between inner tank and outer tank of horizontal vacuum heat insulation low-temperature container

Abstract

The invention discloses a supporting mechanism between an inner tank and an outer tank of a horizontal vacuum heat insulation low-temperature container, which comprises four front supporting seats and four rear supporting seats, the four front supporting seats are arranged on a front seal head of the outer tank and are respectively positioned at the left upper corner, the right upper corner, the left lower corner and the right lower corner of the outer side of a front seal head of the inner tank, and the four rear supporting seats are arranged on a rear seal head of the outer tank and are respectively positioned at the left lower corner and the right lower corner of the outer side of the front seal head of the inner tank. The four front supporting seats and the four rear supporting seats are respectively located at the left upper corner, the right upper corner, the left lower corner and the right lower corner of the outer side of the rear sealing head of the inner tank, the supporting pipes of the four front supporting seats are respectively provided with a front pull rod mechanism, the supporting pipes of the four rear supporting seats are respectively provided with a rear pull rod mechanism, and each front pull rod mechanism structurally comprises a hinge head, a hinge head seat and a pull rod assembly; the rear pull rod mechanism structurally comprises a pull rod seat and a pull rod assembly. The supporting mechanism is low in heat leakage, good in bearing capacity and high in supporting reliability.

Description

Technical Field

[0001] The present invention relates to the field of vacuum-insulated cryogenic vessels, and particularly to a support mechanism between the inner and outer tanks of a horizontal vacuum-insulated cryogenic vessel. Background Art

[0002] A vacuum-insulated cryogenic vessel is composed of an outer tank and an inner tank located in the outer tank. The space between the inner and outer tanks is evacuated for insulation. The inner tank stores cryogenic liquids such as liquid hydrogen and LNG. The inner tank is supported and fixed in the outer tank by a support mechanism. The structures of the support mechanism usually include the following: an eight-point support structure (i.e., including eight fiberglass supports), a strap structure, a hanger rod structure, a sling structure, etc. Each support mechanism has its own advantages and disadvantages, but issues such as strength, heat conduction, and temperature compensation need to be considered. For mobile vessels, loads such as impact loads, fatigue loads of the support mechanism, and inertial forces of the liquid in the inner tank also need to be considered. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a support mechanism between the inner and outer tanks of a horizontal vacuum-insulated cryogenic vessel with low heat leakage, good bearing capacity, and high support reliability.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a support mechanism between the inner and outer tanks of a horizontal vacuum insulated low-temperature container, including: four front support seats and four rear support seats, the four front support seats are arranged on the front head of the outer tank, and are respectively located at the upper left corner, upper right corner, lower left corner, and lower right corner of the outer side of the front head of the inner tank, the four rear support seats are arranged on the rear head of the outer tank, and are respectively located at the upper left corner, upper right corner, lower left corner, and lower right corner of the outer side of the rear head of the inner tank, the structure of each support seat includes: a through hole arranged on the head of the outer tank, a support tube, and a tube cover, the support tube is located on the outer side of the outer tank, and the support The inner port of the tube is welded and sealed relative to the through hole, the support tube is connected with the interlayer between the inner tank and the outer tank, and the tube cover is welded and sealed on the outer port of the support tube; a front pull rod mechanism is respectively arranged in the support tubes of the four front support seats, and a rear pull rod mechanism is respectively arranged in the support tubes of the four rear support seats, and the structure of the front pull rod mechanism includes: a hinge head, a hinge head seat, and a pull rod assembly; the structure of the rear pull rod mechanism includes: a pull rod seat, and a pull rod assembly; the structure of the pull rod assembly includes: two pull rod units and a fixed seat, and the structure of the pull rod unit includes: a pull rod, a glass fiber reinforced plastic pipe, and a hinged tube, the glass fiber reinforced plastic pipe is located in the hinged tube, and the hinged tube is provided with a rear pull rod mechanism. A through hole is provided on the outer end of the connecting tube, and the inner end of the pull rod passes through the through hole and is inserted into the glass fiber reinforced plastic tube. The pull rod does not contact the hinge tube, and an abutting boss is provided on the inner end of the pull rod. The inner end of the glass fiber reinforced plastic tube abuts against the abutting boss, and the outer end of the glass fiber reinforced plastic tube abuts against the inner side of the outer end of the hinge tube. Positioning mechanisms that can position the end of the glass fiber reinforced plastic tube are provided on the abutting boss and the inner side of the outer end of the hinge tube; the inner ends of the hinge tubes in the two pull rod units are hinged to each other, the fixing seat is fixed to the inner tank head, and the outer end of the pull rod in the inner pull rod unit is hinged to the fixing seat; in the front pull rod mechanism: the hinge head seat is welded and fixed It is fixed in the support tube, a spherical groove is arranged on the hinge head seat, an avoidance hole is arranged at the bottom of the spherical groove, the hinge head is installed in the spherical groove, and the surface on the hinge head that contacts the spherical groove is spherical, so that the hinge head can rotate and swing in the hinge head seat through the spherical surface thereon cooperating with the spherical surface in the spherical groove, and the outer end of the tie rod in the tie rod unit located on the outside of the tie rod assembly is inserted into the hinge head after passing through the avoidance hole and is welded and fixed to the hinge head; in the rear tie rod mechanism: the tie rod seat is welded and fixed in the support tube, and the outer end of the tie rod in the tie rod unit located on the outside of the tie rod assembly is inserted into the tie rod seat and is welded and fixed to the tie rod seat.

[0005] Furthermore, in the aforementioned support mechanism between the inner and outer tanks of the horizontal vacuum insulated low-temperature container, the angle between the axis of the support tube in each support seat and the vertical axis section of the inner tank is 25° to 40°.

[0006] Furthermore, in the aforementioned support mechanism between the inner and outer tanks of the horizontal vacuum insulated low-temperature container, the distance between the intersection of the axis of the support tube in each support seat and the horizontal axis section of the inner tank and the axis of the inner tank is 150 to 250 mm.

[0007] Further, for the support mechanism between the inner and outer tanks of the aforementioned horizontal vacuum-insulated cryogenic container: Among the four front support seats, the two on the left and the two on the right are symmetric left and right, and the two on the upper side and the two on the lower side are symmetric up and down; among the four rear support seats, the two on the left and the two on the right are symmetric left and right, and the two on the upper side and the two on the lower side are symmetric up and down.

[0008] Further, for the support mechanism between the inner and outer tanks of the aforementioned horizontal vacuum-insulated cryogenic container: The pull rod seat is composed of a fixed head and a fixed head seat. The fixed head seat is welded and fixed in the support pipe, the fixed head is inserted into the fixed head seat, and they are welded and fixed. The outer end of the pull rod in the pull rod unit is inserted into the fixed head and is welded and fixed to the fixed head.

[0009] Further, for the support mechanism between the inner and outer tanks of the aforementioned horizontal vacuum-insulated cryogenic container: The positioning mechanism on the abutting boss is a positioning rib, and the inner end of the glass fiber reinforced plastic pipe is positioned by the positioning rib; the positioning mechanism on the inner side of the outer end of the hinge cylinder is a positioning groove, and the outer end of the glass fiber reinforced plastic pipe is positioned by the positioning groove.

[0010] The advantages of the present invention are as follows: In the support mechanism described above, since the two pull rod units in the pull rod assembly are hinged, the hinge head can rotate and swing in the hinge head seat, and the outer end of the pull rod in the pull rod unit is hinged to the fixed seat, the inner tank has multiple degrees of freedom, thus greatly reducing the risk of excessive local stress caused by inconsistent deformation, reducing the risk of strength failure of the support mechanism, and improving the reliability and bearing capacity of the support mechanism; in addition, the circuitous maze installation structure of the pull rod, the glass fiber reinforced plastic pipe, and the hinge cylinder can effectively increase the heat conduction path and improve the thermal resistance, thereby reducing the heat leakage of the support mechanism. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the support mechanism between the inner and outer tanks of the horizontal vacuum-insulated cryogenic container described in the present invention.

[0012] Figure 2 is Figure 1 the left view structural diagram.

[0013] Figure 3 is a schematic structural diagram of the front pull rod mechanism.

[0014] Figure 4 is a schematic structural diagram of the rear pull rod mechanism. Detailed Description of the Invention

[0015] The present invention will be further described in detail below in conjunction with specific embodiments and the drawings.

[0016] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the support mechanism between the inner and outer tanks of the horizontal vacuum insulated low-temperature container includes: four front support seats 1 and four rear support seats 2. The four front support seats 1 are arranged on the front head of the outer tank 3, and are respectively located at the upper left corner, upper right corner, lower left corner, and lower right corner of the outer side of the front head of the inner tank 4. The four rear support seats 2 are arranged on the rear head of the outer tank 3, and are respectively located at the upper left corner, upper right corner, lower left corner, and lower right corner of the outer side of the rear head of the inner tank 4. The structure of each support seat includes: a through hole 5, a support tube 6, and a tube cover 7 arranged on the head of the outer tank 3. The support tube 6 is located on the outer side of the outer tank 3. The inner port of the support tube 6 is welded and sealed with the through hole 5. The support tube 6 is sandwiched between the inner tank 4 and the outer tank 3. The layers are interconnected, and the pipe cover 7 is welded and sealed on the outer port of the support pipe 6; a front pull rod mechanism for supporting the inner tank 4 is respectively provided in the support pipe 6 of the four front support seats 1, and a rear pull rod mechanism for supporting the inner tank 4 is respectively provided in the support pipe 6 of the four rear support seats 2, and the structure of the front pull rod mechanism includes: a hinge head 9, a hinge head seat 8, and a pull rod assembly; the structure of the rear pull rod mechanism includes: a pull rod seat 10, a pull rod assembly; the structure of the pull rod assembly includes: two pull rod units, a fixed seat 13, and the structure of the pull rod unit includes: a pull rod 14, a glass fiber reinforced plastic pipe 15, and an articulated tube 16, the glass fiber reinforced plastic pipe 15 is located in the articulated tube 16, and a through hole is provided on the outer end of the articulated tube 16, and the pull rod 14 The inner end passes through the through hole and is inserted into the FRP tube 15. The pull rod 14 does not contact the hinge tube 16. An abutting boss 17 is provided on the inner end of the pull rod 14. The inner end of the FRP tube 15 abuts against the abutting boss 17. The FRP tube 15 and the rod body of the pull rod 14 do not contact each other. The outer end of the FRP tube 15 abuts against the inner side of the outer end of the hinge tube 16. Positioning mechanisms that can position the end of the FRP tube 15 are provided on the abutting boss 17 and the inner side of the outer end of the hinge tube 16. The inner ends of the hinge tubes 16 in the two pull rod units are hinged to each other, the fixing seat 13 is fixed to the head of the inner tank 4, and the outer end of the pull rod 14 in the inner pull rod unit is hinged to the fixing seat 13. Front pull rod mechanism In the middle: the hinge head seat 8 is welded and fixed in the support tube 6, a spherical groove is provided on the hinge head seat 8, and an avoidance hole is provided at the bottom of the spherical groove. The hinge head 9 is installed in the spherical groove, and the surface of the hinge head 9 that contacts the spherical groove is spherical, so that the hinge head 9 can rotate and swing in the hinge head seat 8 through the spherical surface thereon cooperating with the spherical surface in the spherical groove, and the outer end of the tie rod 14 in the tie rod unit located on the outside of the tie rod assembly is inserted into the hinge head 9 after passing through the avoidance hole, and is welded and fixed to the hinge head 9; in the rear tie rod mechanism: the tie rod seat 10 is welded and fixed in the support tube 6, and the outer end of the tie rod 14 in the tie rod unit located on the outside of the tie rod assembly is inserted into the tie rod seat 10, and is welded and fixed to the tie rod seat 10.

[0017] Since the two tie rod units in the tie rod assembly are hinged, the hinge head 9 can swing in the hinge head seat 8, and the outer end of the tie rod 14 in the tie rod unit is hinged to the fixed seat 13, the inner tank 4 has multiple degrees of freedom, thus greatly reducing the risk of excessive local stress caused by inconsistent deformation, reducing the risk of strength failure of the support mechanism, and improving the reliability and bearing capacity of the support mechanism.

[0018] In addition, the circuitous maze installation structure of the tie rod 14, the fiberglass pipe 15, and the hinge cylinder 16 can effectively increase the heat conduction path and improve the thermal resistance, thereby reducing the heat leakage of the support mechanism.

[0019] In this embodiment, the angle α between the axis of the support pipe 6 in each support seat and the vertical axis section of the inner tank 4 is 25° to 40°. The distance S between the intersection of the axis of the support pipe 6 in each support seat and the horizontal axis section of the inner tank 4 and the axis of the inner tank 4 is 150 to 250 mm. The angle α and the distance S are very crucial. A reasonable angle α and distance S can enable the support mechanism to better support the inner tank under less force, improving the reliability of the support mechanism.

[0020] Among the four front support seats: the two on the left and the two on the right are symmetric left and right, and the two on the top and the two on the bottom are symmetric up and down; among the four rear support seats: the two on the left and the two on the right are symmetric left and right, and the two on the top and the two on the bottom are symmetric up and down. After such a setting, the inner tank can be supported more balancedly.

[0021] The tie rod seat 10 is composed of a fixed head 12 and a fixed head seat 11. The fixed head seat 11 is welded and fixed in the support pipe 6. The fixed head 12 is inserted into the fixed head seat 11 and is welded and fixed. The outer end of the tie rod 14 in the tie rod unit is inserted into the fixed head 12 and is welded and fixed to the fixed head 12. Such a setting is to make the support mechanism easier to install.

[0022] The positioning mechanism on the abutting boss 17 is a positioning rib, and the inner end of the fiberglass pipe 15 is positioned by the positioning rib; the positioning mechanism on the inner side of the outer end of the hinge cylinder 16 is a positioning groove, and the outer end of the fiberglass pipe 15 is positioned by the positioning groove.

Claims

1. The support mechanism between the inner and outer tanks of a horizontal vacuum insulated cryogenic container includes: Four front support seats and four rear support seats, the four front support seats are arranged on the front head of the outer tank, and are respectively located at the upper left corner, upper right corner, lower left corner and lower right corner of the outer side of the front head of the inner tank, and the four rear support seats are arranged on the rear head of the outer tank, and are respectively located at the upper left corner, upper right corner, lower left corner and lower right corner of the outer side of the rear head of the inner tank, and the structure of each support seat includes: a through hole arranged on the head of the outer tank, a support tube and a tube cover, the support tube is located on the outer side of the outer tank, the inner port of the support tube is connected to the through hole for welding and sealing, the support tube is connected to the interlayer between the inner tank and the outer tank, and the tube cover is provided. The cover is welded and sealed on the outer port of the support tube; a front pull rod mechanism is respectively arranged in the support tubes of the four front support seats, and a rear pull rod mechanism is respectively arranged in the support tubes of the four rear support seats, and the structure of the front pull rod mechanism includes: a hinge head, a hinge head seat, and a pull rod assembly; the structure of the rear pull rod mechanism includes: a pull rod seat, and a pull rod assembly; the structure of the pull rod assembly includes: two pull rod units and a fixed seat, and the structure of the pull rod unit includes: a pull rod, a glass fiber reinforced plastic pipe, and an articulated tube, the glass fiber reinforced plastic pipe is located in the articulated tube, and a through hole is arranged on the outer end of the articulated tube, and the inner end of the pull rod passes through the through hole and is inserted into In the FRP tube, the pull rod does not contact the hinge tube, and abutment boss is arranged on the inner end of the pull rod, the inner end of the FRP tube abuts against the abutment boss, and the outer end of the FRP tube abuts against the inner side of the outer end of the hinge tube. Positioning mechanisms capable of positioning the end of the FRP tube are arranged on the abutment boss and the inner side of the outer end of the hinge tube; the inner ends of the hinge tubes in the two pull rod units are hinged to each other, the fixing seat is fixed to the inner tank head, and the outer end of the pull rod in the inner pull rod unit is hinged to the fixing seat; in the front pull rod mechanism: the hinge head seat is welded and fixed in the support tube, and the hinge head seat is fixed to the inner end of the support tube. A spherical groove is provided, and an avoidance hole is provided at the bottom of the spherical groove. The hinge head is installed in the spherical groove. The surface of the hinge head in contact with the spherical groove is spherical, so that the hinge head can rotate and swing in the hinge head seat through the spherical surface thereon cooperating with the spherical surface in the spherical groove. The outer end of the tie rod in the tie rod unit located on the outside of the tie rod assembly is inserted into the hinge head after passing through the avoidance hole and is welded and fixed to the hinge head; in the rear tie rod mechanism: the tie rod seat is welded and fixed in the support tube, and the outer end of the tie rod in the tie rod unit located on the outside of the tie rod assembly is inserted into the tie rod seat and is welded and fixed to the tie rod seat.

2. The support mechanism between the inner and outer tanks of a horizontal vacuum insulated cryogenic container according to claim 1, characterized in that: The angle between the axis of the support pipe in each support seat and the vertical axis section of the inner tank is 25° to 40°.

3. The support mechanism between the inner and outer tanks of a horizontal vacuum insulated cryogenic container according to claim 1 or 2, characterized in that: The distance between the intersection of the axis of the support pipe in each support seat and the horizontal axis section of the inner tank and the axis of the inner tank is 150 to 250 mm.

4. The support mechanism between the inner and outer tanks of a horizontal vacuum insulated cryogenic container according to claim 1 or 2, characterized in that: Among the four front support seats: the two on the left and the two on the right are symmetrical, and the two on the top and the two on the bottom are symmetrical; among the four rear support seats: the two on the left and the two on the right are symmetrical, and the two on the top and the two on the bottom are symmetrical.

5. The supporting mechanism between the inner and outer tanks of a horizontal vacuum insulated cryogenic container according to claim 3, characterized in that: Among the four front support seats: the two on the left and the two on the right are symmetrical, and the two on the top and the two on the bottom are symmetrical; among the four rear support seats: the two on the left and the two on the right are symmetrical, and the two on the top and the two on the bottom are symmetrical.

6. The support mechanism between the inner and outer tanks of a horizontal vacuum insulated cryogenic container according to claim 1 or 2, characterized in that: The tie rod seat is composed of a fixed head and a fixed head seat. The fixed head seat is welded and fixed in the support tube. The fixed head is inserted on the fixed head seat, and the fixed head seat is welded and fixed. The outer end of the tie rod in the tie rod unit is inserted on the fixed head and welded and fixed with the fixed head.

7. The support mechanism between the inner and outer tanks of a horizontal vacuum insulated cryogenic container according to claim 1 or 2, characterized in that: The positioning mechanism on the boss is a positioning rib, and the inner end of the glass fiber reinforced plastic pipe is positioned by the positioning rib; the positioning mechanism on the inner side of the outer end of the hinged tube is a positioning groove, and the outer end of the glass fiber reinforced plastic pipe is positioned by the positioning groove.

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