EP2877776B1 - Transport container for cryogenic fluids - Google Patents

Description

Special transport containers are used for the transport of cryogenic fluids. They are double-walled and have an outer container with a cylindrical single-walled main body and two outwardly curved single-walled end walls, in which an inner container is housed, which is designed similarly and has slightly smaller dimensions ( US 5,533,340 ). At each end of the inner container, a respective holding device is arranged, which are arranged coaxially with the longitudinal axis of the outer container and the inner container. Each holding device is connected on the one hand to the adjacent end wall of the outer container and on the other hand to the adjacent end wall of the inner container. The first holding device is formed in one piece and rigid. The second holding device has two holding parts, by means of which the two end walls in the axial direction relative to each other are displaced to compensate for the change in length of the inner container relative to the outer container due to the lower temperature of the fluid can.

At the end of the transport container with the rigid first holding device, at least one inflow line and a discharge line for the fluid itself and for a coolant for the fluid are connected to the inner container. On the outer container a connecting line to an evacuation device is connected, by means of which the space between the outer container and the inner container can be evacuated to provide a thermal insulation for the inner container.

In the second holding device, the first holding part is formed as a continuous hollow profile, which by a Circular cylinder is flattened at the top side. The second holding part is formed by a pin which is matched to the hollow profile of the first holding part. The flattening of the circular cylindrical shape of both holding parts should form an anti-rotation lock between the outer container and the inner container.

In this embodiment of the second holding device is not considered that at low operating temperature of the inner container, this shrinks not only in length by up to 50 mm but also that the diameter of the pin shrinks, which serves as a second holding part. This affects in two ways.

The shrunken pin is theoretically only along a Zylindermantellin, practically, due to the elastic deformation of the parts, in the range of a very narrow peripheral region on the cylindrical hollow profile. This results in a correspondingly high surface pressure. In any case, this is so high that a greater wear of the contact surfaces is inevitable in the frequently anticipated lateral accelerations.

In addition, the shrunken pin no longer rests in the horizontal direction on the two inner walls of the cylindrical hollow profile. Therefore, the pin performs at each lateral acceleration of the transport container a relative movement relative to the cylindrical hollow profile, which in combination with the already greatly reduced contact area in addition to an even higher wear of both the pin as well as the hollow profile contributes. This limits the longest possible service life of the transport container very strong.

The invention has for its object to provide a transport container for cryogenic fluids, in which the dimensional changes of the inner container due to its reduced temperature less adversely affect the contact surfaces of the second holding device, as is the case with the known transport container. This object is achieved by a transport container having the features specified in claim 1.

Characterized in that the contact surfaces of the first holding part and the cooperating abutment surfaces of the second holding part are flat and are arranged symmetrically to the vertical plane of the longitudinal axes of the outer container and the inner container V-shaped, retain these contact surfaces even with a dimensional change of the inner container their planar shape and their V-shaped arrangement, so that the mutual full-surface investment and thus the relatively low surface pressure of these contact surfaces is always maintained. During a temperature-induced shrinkage or expansion of the inner container, the abutment surfaces of the second holding part move only parallel to the contact surfaces of the first holding part, both in the axial direction and in the direction of the legs of the V-shape of the contact surfaces.

The fact that the contact surfaces are arranged in a V-shape, they can accommodate both the weight of the inner container and vertically downward acceleration forces as well as horizontal acceleration forces equally well without causing relative movements of the two holding parts occur.

Characterized in that the contact surfaces of the first holding part in the axial direction have a longitudinal extent which is at least approximately equal to the sum of the axial length of the Bearing surfaces of the second holding part and from the difference in the axial length of the inner container at ambient temperature and at operating temperature, it is ensured that the contact surfaces of the second holding part always rest fully on the contact surfaces of the first holding part, so that in so far as the surface pressure of the contact surfaces and remains relatively low.

All these measures ensure that the wear of the contact surfaces remains relatively low over a longer period of time.

An embodiment of the transport container according to claim 2 ensures that the second holding device can also absorb vertically upward acceleration forces that exceed the simple gravitational acceleration. The fact that the two contact surfaces and the two other contact surfaces as well as the second holding part, the two contact surfaces and the two other contact surfaces are firmly connected to each other in the manner of a square frame both in the first holding part, both the first holding part as well as the second holding part stiffened and reinforced. This benefits the dimensional stability of all flat Berührunsflächen and contributes to a further reduction of wear.

By an embodiment of the transport container according to claim 3, the second holding device can be easily adjusted to different operating conditions. With a larger inclination angle α and a corresponding larger spread angle β higher vertical forces can be absorbed. With a smaller inclination angle α and a corresponding smaller spread angle β greater horizontal forces can be absorbed. In one embodiment of the transport container according to claim 4, the holding parts are easier and more accurate to manufacture. In this embodiment, there is an average value for the capacity of vertical forces and horizontal forces.

In an embodiment of the transport container according to claim 5, the part of the holding device located above the longitudinal axis can just as easily be adjusted to other requirements with respect to the capacity to absorb vertical forces and horizontal forces, as is the case with the underlying part of the holding device.

By an embodiment of the transport container according to claim 6, the manufacture and assembly of the entire holding device is facilitated and achieved a medium suitability for receiving vertical forces and horizontal forces.

An embodiment of the transport container according to claim 7 ensures that the second holding device is designed to save space.

In one embodiment of the transport container according to claim 8, the wear, in particular the arranged below the longitudinal axis of contact surfaces can be significantly reduced not only in a temperature-induced shrinkage or expansion of the inner container but also in the different acceleration forces occurring.

In one embodiment of the transport container according to claim 9, the heat transfer is reduced to the inner container.

In one embodiment of the transport container according to claim 10, the sliding element can endure even very low temperatures of the inner container, without noticeably reducing its good lubricity. By receiving the sliding elements in each matched to a recess of the second holding member ensures that the sliding elements are not displaced under lateral load when the inner container, a temperature change and corresponding dimensional changes occur or if frictional forces due to acceleration forces laterally on the sliding elements act. A development according to claim 11 facilitates the assembly of the sliding elements and the assembly of the second holding device and the transport container as a whole.

Fig. 1

eine perspektivische Ansicht des Transportbehälters mit einen Außenbehälter und einem darin untergebrachten Innenbehälter;

Fig. 2

einen Längsschnitt des Transportbehälters durch die Längsachse der beiden Behälter, ohne die üblichen Einbauten des Innenbehälter und ohne die üblichen Leitungen;

Fig. 3

eine Ausschnittvergrößerung gemäß der Schnittverlaufslinie A in Fig. 2;

Fig. 4

eine Ausschnittvergrößerung gemäß der Schnittverlaufslinie B in Fig. 2;

Fig. 5

einen Querschnitt des Transportbehälters gemäß der Schnittverlaufslinie D - D in Fig. 2 und Fig. 7;

Fig. 6

eine Ausschnittvergrößerung aus Fig. 5;

Fig. 6a

einen ersten Teilauschnitt aus Fig. 6;

Fig. 6b

einen zweiten Teilauschnitt aus Fig. 6;

Fig. 7

eine Ausschnittvergrößerung gemäß der Schnittverlaufslinie C in Fig. 2 und gemäß der Schnittverlaufslinie E - E in Fig. 5;

Fig. 8

eine Ausschnittvergrößerung gemäß der Schnittverlaufslinie C in Fig. 2 und gemäß der Schnittverlaufslinie F - F in Fig. 5;

Fig. 9

eine Ausschnittvergrößerung gemäß der Schnittverlaufslinie G in Fig. 7.

In the following the invention will be explained in more detail with reference to an embodiment of the transport container shown in the drawing. Show it:

Fig. 1

a perspective view of the transport container with an outer container and an inner container housed therein;

Fig. 2

a longitudinal section of the transport container through the longitudinal axis of the two containers, without the usual installations of the inner container and without the usual lines;

Fig. 3

a detail enlargement according to the section line A in Fig. 2 ;

Fig. 4

a detail enlargement according to the section line B in Fig. 2 ;

Fig. 5

a cross section of the transport container according to the section line D - D in Fig. 2 and Fig. 7 ;

Fig. 6

a cutout enlargement Fig. 5 ;

Fig. 6a

a first partial section Fig. 6 ;

Fig. 6b

a second sub-section Fig. 6 ;

Fig. 7

a detail enlargement according to the section line C in Fig. 2 and according to the section line E - E in Fig. 5 ;

Fig. 8

a detail enlargement according to the section line C in Fig. 2 and according to the section line F - F in Fig. 5 ;

Fig. 9

a detail enlargement according to the section line G in Fig. 7 ,

The transport container 10 is as a whole in Fig. 1 shown. Its basic construction is over Fig. 2 to see. In it, however, the better overview because of the usual fittings and lines are not shown.

The transport container 10 has an outer container 11 and an inner container 12, which are arranged coaxially with each other. The outer container 11 has a cylindrical single-walled main body 13 and two outwardly curved single-walled end walls 14 and 15, which are firmly welded together. The inner container 12 also has a cylindrical single-walled main body 16 and two outwardly curved single-walled end walls 17 and 18, which are firmly welded together.

The outer container 11 and the inner container 12 have a common longitudinal axis 19th

Between the one end wall 14 of the outer container 11 and the adjacent end wall 17 of the inner container 12, a first holding device 21 is present, which is arranged coaxially to the longitudinal axis 19. This first holding device 21 is firmly welded to both the end wall 14 of the outer container 11 as well as with the end wall 17 of the inner container 12 ( Fig. 4 ). By means of this first holding device 21, the two containers 11 and 12 are fixedly connected together at this end.

Between the other end wall 15 of the outer container 11 and the adjacent end wall 18 of the inner container 12, a second holding device 22 is present, which is also arranged coaxially to the longitudinal axis 19.

The second holding device 22 has two holding parts, which are designed and arranged such that the two end walls 15 and 18 are displaceable in the axial direction relative to each other. They are based on Fig. 5 to Fig. 9 described in more detail.

The first holding device 21 virtually forms a fixed bearing for the two containers 11 and 12, and the second holding device 22 forms a floating bearing for the two containers 11 and 12, as it were.

Like both in Fig. 1 as well as in Fig. 2 can be seen, the main body 13 of the outer container 11 is provided on its outer side with a helical reinforcement 23. It is formed by a hollow body 24 which is open toward the main body 13 ( Fig. 3 ), whose edges 25 are welded continuously to the base body 13, wherein adjacent coil sections have a predetermined mutual distance. This reinforcement 23 serves on the one hand to prevent buckling of the cylindrical Grundköpers 13 of the outer container 11 when the space between the outer container 11 and the inner container 12 is evacuated to thermally insulate the inner container 11 relative to the outer container 12. On the other hand, it serves to catch the pressure increase occurring in the outer container 11 in the event of a leak in the inner container 12.

By the outside reinforcement 23 can be avoided on the inside of the outer container 11 arranged reinforcements and thereby a larger interior can be achieved.

How out Fig. 4 it can be seen, the first holding device 21 is mainly formed by a cylindrical holding tube 26, which is welded on the one hand to the outside of the end wall 17 of the inner container 12 and on the other hand with the end wall 14 of the outer container 11.

In order to facilitate the production of the end wall 14 is cut out in the alignment line of the cylindrical holding tube 26 circular and inserted through the resulting cutout 27, the holding tube 26 and welded on the outside with the adjoining the cutout 27 end wall 14. On the inside of the holding tube 26, a closure plate 28 is used, which has the same thickness and curvature as the end wall 14, and welded to the inside of the holding tube 26, whereby the end wall 14 is completed again.

In the region of the holding device 21, an insulating material 29 is applied and fixed on the outside of the end wall 14 in order to minimize the unavoidable heat transfer.

Out Fig. 5 It can be seen that the holding device 22 is not cylindrical, as in the prior art, but quadrangular. It has in the preferred embodiment the shape of a square placed on top.

The second holding device 22 has an outer first holding part 31 (FIG. Fig. 6a ) and an inner second holding part 32 ( Fig. 6b ), which are arranged in the same axial region of the transport container 10 coaxial with each other ( Fig. 6 ). The inner contour of the outer holding part 31 and the outer contour of the inner holding part 32 are coordinated so that at room temperature of the outer container 11 and the inner container 12, the two holding parts 31 and 32 can be assembled without difficulty and at any time in the axial direction relative to each other ,

The first holding part 31 ( Fig. 6a ) has two planar contact surfaces 33 and 34 which are located below the longitudinal axis 19, which are aligned parallel to the longitudinal axis 19, which are facing the longitudinal axis 19, which include a predetermined inclination angle α of 90 ° with each other and symmetrical to the vertical plane 35 of Longitudinal axis 19 are aligned.

The second holding part 32 ( Fig. 6b ) has in a corresponding manner on two planar abutment surfaces 36 and 37, which are located below the longitudinal axis 19 of the inner container 12, which are aligned parallel to the longitudinal axis 19, which are remote from the longitudinal axis 19, which have a spread angle β as a counter-angle to the inclination angle which is equal to the angle of inclination α extended by 180 ° of the contact surfaces 34 and 35 of the first holding part 31, and which are aligned symmetrically to the vertical plane 35 of the longitudinal axis 19.

The contact surfaces 33 and 34 are formed by the true outside of a retaining strip 41 and 42, respectively. The abutment surfaces 36 and 37 are formed by the true outside of a retaining strip 43 and 44, respectively.

By means of these retaining strips 41 and 42 with their contact surface 33 or 34 of the first holding part 31 and by means of the retaining strips 43 and 44 with the abutment surface 36 and 37 of the second holding part 32, both acting on the second holding device 22 weight of the inner container 12 as well occurring during transport movements vertically downwardly directed and horizontally oriented acceleration forces of the inner container 12 are received by the first holding part 31.

Because it can not be ruled out in difficult transport conditions by land or sea that can act on the inner container 12 vertically upward acceleration forces that exceed its weight, is expediently above the longitudinal axis 19 both the first holding member 31 with two other contact surfaces 45 and 46 as well as the second holding member 32 is provided with two other abutment surfaces 47 and 48, of which the abutment surfaces 45 and 46 of the longitudinal axis 19 and facing away from which the abutment surfaces 47 and 48 facing away from the longitudinal axis 19. The two other contact surfaces 45 and 46 close to each other an inclination angle γ, which is equal to the inclination angle α of the contact surfaces 33 and 34. The two other abutment surfaces 47 and 48 have a spread angle δ, which is equal to the extended by 180 ° angle of inclination γ of the other contact surfaces 45 and 46. The vertical projections of the other contact surfaces 45 and 46 and the other abutment surfaces 47 and 48 are aligned in pairs. The other contact surfaces 45 and 46 and the other abutment surfaces 47 and 48 are aligned symmetrically to the vertical plane 35 of the longitudinal axis 19.

The other contact surfaces 45 and 46 are by the true outside of a retaining strip 51 and 52, respectively educated. The other abutment surfaces 47 and 48 are formed by the true outside of a retaining strip 53 and 54, respectively.

In the first holding part 31, the retaining strips 41 and 42 and the retaining strips 51 and 52 are welded together, so that they form a rigid outer square frame 55. When the second holding part 32, the retaining strips 43 and 44 and the retaining strips 53 and 54 are welded together, so that they form a rigid inner square frame 56.

The fact that the inclination angle γ of the other contact surfaces 45 and 46 is equal to the inclination angle α of the contact surfaces 33 and 34 and the spread angle δ of the other abutment surfaces 47 and 48 equal to the spread angle β of the abutment surfaces 36 and 37, results in the Fig. 6, Fig. 6a and Fig. 6b shown exact square shape of the holding parts 31 and 32nd

The structure of the holding parts 31 and 32 is described in detail in FIGS. 7 to 9 shown.

The quadrilateral frame 55 of the first holding part 31 has on the side remote from the end wall 17 of the outer container 11 side a flat boundary surface or end face 57 on ( Fig. 7 ), which is aligned normal to the longitudinal axis 19. On the end wall 17 side facing the boundary surface of the square frame 55 is tuned to the concave inner side of the end wall 17 of the outer container 11. The square frame 56 of the second holding part 32 has on the side remote from the end wall 18 of the inner container 12 side a flat boundary surface or end face 58 which is aligned normal to the longitudinal axis 19. On the front wall 18 side facing the boundary surface of the square frame 56 matched to the convex outside of the end wall 18 of the inner container 12.

The square frame 55 of the first holding part 31 is welded on its outside with a stiffening ring 61, which reinforces the square frame 55 at the same time and whose floor plan has the shape of a quadrangular ring ( 6a ). In a corresponding manner, the square frame 56 of the second holding part 32 is welded on its inside with a stiffening plate 62 ( Fig. 6b ), which reinforces the square frame 56 at the same time and whose floor plan has the shape of a square whose corners are cut off for welding reasons. The stiffening ring 61 is disposed in the region of the free end of the outer square frame 55 ( Fig. 8 ). The stiffening disk 62 is arranged in the region of the free end of the inner quadrilateral frame 56 (FIG. Fig. 7 ).

At the outer square frame 55 is also in the middle of its longitudinal sides depending a plate-shaped strut 63 welded ( Fig. 6a ), which is also welded to the inside of the end wall 17 of the outer container 11 ( Fig. 7 ).

The end wall 14 of the outer container 11 of the ( Fig. 4 ) has to increase its rigidity in the region of the first holding device 21 on a central surface portion 64 whose wall thickness is greater than that of the surrounding surface portion 65. In the same way, the end wall 17 of the inner container 12 has a central surface portion 66, whose wall thickness is greater than that of the surface portion 67 surrounding it. In the region of the second holding device 22 (FIG. Fig. 8 ), the end wall 15 of the outer container 11 on a central surface portion 68 whose wall thickness is greater than that of the surface portion 69 surrounding it. The Front wall 18 of the inner container 12 has a central surface portion 71, whose wall thickness is greater than that of the surrounding surface portion 72.
All these measures ensure that the flat bearing surfaces and contact surfaces of the two holding devices 21 and 22 remain largely flat even under load and allow a uniform load distribution at the contact surfaces.

As in Fig. 7 is indicated and in Fig. 9 is clearly visible, a sliding element 73 is disposed on the outside of the retaining strips 43, 44, 53 and 54 of the inner quadrangle frame 56 each. The sliding elements 73 are made of polytetrafluoroethylene, are plate-shaped and have a rectangular plan. Each sliding element 73 is inserted into a recess 74, which is matched to its plan view, on the side edges 75 of which the sliding element 73 rests. In addition, the sliding elements 73 are screwed with at least two countersunk screws 76 with the associated retaining strip, which are provided with corresponding threaded holes 77.
This embodiment of the transport container 10, in which all retaining strips of the inner square frame 56 are provided with a sliding member 73, is especially in difficult transport conditions into consideration, in which strong horizontal acceleration forces are superimposed by equally strong vertically upward acceleration forces, so that the inner square frame 56 abuts against the above the longitudinal axis 19 arranged bearing surfaces 45 and 46 of the outer square frame 55 and the sliding elements abutting 73 of the abutment surfaces 47 and 48 slide along it. In less difficult transport conditions, an embodiment not shown in the drawing can be used are, in which only the arranged below the longitudinal axis 19 abutment surfaces 36 and 37 of the inner square frame 56 are provided with a sliding member 73.

As Fig. 1 and Fig. 2 show, a number of support plates 78 are welded to the end walls 14 and 15 of the outer container 11, means of the transport container 10 is fixedly connected to a support frame 79 with standardized dimensions.

LIST OF REFERENCE NUMBERS

10

transport container

11

outer container

12

inner container

13

body

14

bulkhead

15

bulkhead

16

body

17

bulkhead

18

bulkhead

19

longitudinal axis

21

first holding device

22

second holding device

23

reinforcement

24

hollow profile

25

margins

26

Support tube

27

neckline

28

closing plate

29

Isolierstoffmatte

31

first holding part

32

second holding part

33

contact surfaces

34

contact surfaces

35

vertical plane

36

contact surfaces

37

contact surfaces

41

retaining strip

42

retaining strip

43

retaining strip

44

retaining strip

45

additional contact surface

46

additional contact surface

47

additional berth

48

additional berth

51

retaining strip

52

retaining strip

53

retaining strip

54

retaining strip

55

square frame

56

square frame

57

face

58

face

61

stiffening ring

62

stiffening plate

63

pursuit

64

central surface section

65

surrounding area section

66

central surface section

67

surrounding area section

68

central surface section

69

surrounding area section

71

central surface section

72

surrounding area section

73

Slide

74

recesses

75

margins

76

countersunk

77

threaded holes

78

carrying plates

79

support frames

Claims (11)

1. Transport container for cryogenic fluids with the features:

   - it is an outer container (11) provided with a cylindrical, single wall base element (13) and two convex single wall end walls (14; 15) that are firmly welded together,

   - it is an inner container (12) with a cylindrical, single wall base element (16) and two convex single wall end walls (17; 18) that are firmly welded together,

   - between the one end wall (14) of the outer container (11) and the end wall (17) of the inner container (12) adjacent to it is provided a first retaining device (21),

   - - which is arranged coaxially to the longitudinal axis (19) of the outer container (11) and the inner container (12),

   - - by means of which both end walls (14; 17) are firmly connected to one another,

   - between the other end wall (15) of the outer container (11) and the end wall (18) of the inner container (12) adjacent to it there is provided a second retaining device (22),

   - - which is arranged coaxially to the longitudinal axis (19) of the outer container (11) and the inner container (12) and

   - - which possesses two retaining parts (31; 32), by means of which both end walls (15; 18) are movable in the axial direction relative to one another,

   - the first retaining part (31) is firmly connected to the associated end wall (15) of the outer container (11) and the second retaining part (32) is firmly connected to the associated end wall (18) of the inner container (12),

   - the inner container (12) is connected to at least one inlet pipe and to at least one outlet pipe for the fluid which are guided through its end wall (17) facing the first retaining device (31), through the interspace between the outer container (11) and the inner container (12) and through the end wall (14) facing the first retaining device (21) of the outer container (11),

   - connected to the interspace is a discharge pipe that is guided through the end wall of one of the retaining devices (21; 22) of the outer container (11),

   characterised by the features:

   - the first retaining part (31) possesses two flat contact surfaces (33; 34),

   - - which are aligned parallel to the longitudinal axis (19) of the outer container (11) and face towards the longitudinal axis (19) of the outer container (11),

   - - which enclose between them a predefined angle of inclination (α),

   - - which are aligned symmetrically to the vertical plane (35) of the longitudinal axis (19),

   - the second retaining part (32) possesses at least two flat bearing surfaces (36; 37),

   - which are aligned parallel to the longitudinal axis (19) of the inner container (12) and face away from the longitudinal axis (19) of the inner container (12),

   - - which between them exhibit a spread angle (β) that is equal to the angle of inclination α of the contact surfaces (33; 34) of the first retaining part (31) extended by 180°,

   - - which are aligned symmetrically to the vertical plane (35) of the longitudinal axis (19), and

   - - which are located in the same axial area as the contact surfaces (33; 34) of the first retaining part (31),

   - the contact surfaces (33; 34) of the first retaining part (31) have, in the axial direction, a longitudinal extension that is at least approximately equal to the sum of the axial length of the bearing surfaces (36; 37) of the second retaining part (32) and of the difference of the axial length of the inner container (12) at ambient temperature and at the operating temperature.
2. Transport container according to claim 1, with the features:

   - the retaining parts (31, 32) of the second retaining device (22) possess, above the longitudinal axis (19), two further contact surfaces (45; 46) as well as two further bearing surfaces (47; 48),

   - - of which the contact surfaces (45; 46) face towards the longitudinal axis (19) of the outer container (11) and of which the bearing surfaces (47; 48) face away from the longitudinal axis (19) of the inner container (12),

   - - of which the further contact surfaces (45; 46) enclose between them a predefined angle of inclination γ and of which the further bearing surfaces (47; 48) exhibit between them a spread angle (δ) that is equal to the angle of inclination (γ) of the further contact surfaces (45; 46) of the first retaining part (31) extended by 180°,

   - which are aligned symmetrically to the vertical plane (35) of the longitudinal axis (19),

   - - whose vertical projections are at least approximately flush with one another in pairs and

   - - which are firmly connected with one another,

   - for the first retaining part (31) with both of the first contact surfaces (33; 34) and with the two further contact surfaces (45; 46) the parts are firmly connected with one another in the form of a quadrilateral frame (55), and

   - for the second retaining part (32) with both of the first bearing surfaces (36; 37) and with the two further bearing surfaces (47; 48) the parts are firmly connected with one another in the form of a quadrilateral frame (56).
3. Transport container according to claim 1 or 2, with the features:

   - the angle of inclination (α) between the two contact surfaces (33; 34) of the first retaining part (31) is in the range 80° to 110° and

   - the spread angle β between the two bearing surfaces (36; 37) of the second retaining part (32) is in the range 260° to 290°
4. Transport container according to claim 3, with the feature:

   - the angle of inclination (α) between the two contact surfaces (33; 34) of the first retaining part (31) is at least approximately equal to 90° and

   - the spread angle β between the two bearing surfaces (36; 37) of the second retaining part (32) is at least approximately equal to 270°.
5. Transport container according to claim 2, with the feature:

   - the angle of inclination (γ) between the two further contact surfaces (45; 46) is in the range 80° to 110° and

   - the spread angle δ between the two further bearing surfaces (47; 48) of the second retaining part (32) is in the range 260° to 290°.
6. Transport container according to claim 5, with the feature:

   - the angle of inclination (γ) between the two further contact surfaces (45; 46) is at least approximately equal to 90° and

   - the spread angle (δ) between the two further bearing surfaces (47; 48) is at least approximately equal to 270°.
7. Transport container according to claim 1 or 2, with the features:

   - on the side facing away from the end wall (15) of the outer container (11), the first retaining part (31) possesses a flat boundary surface (57) that extends perpendicularly to the longitudinal axis (19) of the outer container (11),

   - the first retaining part (31) is matched to the side facing towards the end wall (15) of the outer container (11) on its inner side,

   - on the side facing away from the end wall (18) of the inner container (12), the second retaining part (32) possesses a flat boundary surface (58) that extends perpendicularly to the longitudinal axis (19) of the inner container (12),

   - the second retaining part (32) is matched to the side facing towards the end wall (15) of the inner container (12) on its outer side.
8. Transport container according to one of claims 1 to 7, with the feature:

   - a sliding element (67) is arranged at least between each of the contact surfaces (33; 34) assigned to one another and bearing surfaces (36; 37) of the second retaining device (22) which are positioned below the longitudinal axis (19).
9. Transport container according to claim 8, with the feature:

   - the sliding elements (67) are manufactured from a low thermal conductivity material.
10. Transport container according to claim 8 or 9, with the features:

    - the sliding elements (67) are manufactured from polytetrafluoroethylene and have a plate-shaped design with a rectangular outline,

    - the sliding elements (67) are inserted into each recess (68) matched to them on the second retaining part (32), wherein their outer sides form the bearing surfaces (36; 37; 47; 48) of the second retaining part (32).
11. Transport container according to claim 10, with the feature:

    - each sliding element (67) is detachably connected, in particular screwed, to the associated first retaining part.

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