Hot jacket tool for inner cylinder and lining cylinder of large-size urine tower

Abstract

The shrinkage fit tool for the inner barrel and the lining barrel of the large-size urine tower comprises a base, a lower bed mould, an upper bed mould and a plurality of pull rods, the lower bed mould is arranged in the base, the upper ends of the pull rods are provided with external threads and nuts respectively, the upper bed mould is provided with a plurality of through holes, and the through holes are communicated with the upper bed mould. The lower ends of the pull rods are connected with the lower mould plate, the upper ends of the pull rods correspondingly penetrate through a plurality of through holes in the upper mould plate to be in threaded connection with nuts, a first bushing ring is arranged on the lower end face of the upper mould plate, a second bushing ring is arranged on the upper end face of the lower mould plate, a first step is arranged on the lower end face of the first bushing ring, and a second step is arranged on the upper end face of the second bushing ring. The outer edge of the lower end face of the first bushing ring and the outer edge of the upper end face of the second bushing ring are respectively chamfered, the lower end face of the first bushing ring and the upper end face of the second bushing ring are respectively provided with a plurality of guide blocks, and the outer side walls of the guide blocks are obliquely arranged; and by arranging the lining ring and the guide block, the efficiency of hot jacket operation of the large-size lining cylinder and the inner cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a heat-shrinking tooling for an inner cylinder and a lining cylinder of a large-size urine tower. Background Art

[0002] In the whole production process of urine tower, the interference fit between the inner cylinder and the lining cylinder of the urine tower is very important. If the interference fit between the two is too small, the cylinder fitting surface cannot achieve good close contact, resulting in uneven force transmission, and local additional bending moment will be generated at the local non-fitting place, thus affecting the fatigue life of the inner cylinder; but too large an interference fit between the two will increase the difficulty of the fitting process, the contact stress of the fitting surface will be too large, and even exceed the yield strength of the material to cause local permanent plasticity of the material, especially the assembly of large-sized urine towers is more difficult, because the equipment has a large diameter, thin wall thickness, high flexibility and low rigidity, so the hot fitting operation of large-sized urine towers is very difficult. Therefore, there is an urgent need for a tooling that can well assist the fitting operation between the inner cylinder and the lining cylinder of large-sized urine towers to solve the above problems. Utility Model Content

[0003] In view of the above problems existing in the prior art, the utility model provides a heat-shrink fitting for the inner cylinder and lining cylinder of a large-size urea tower, which is used to overcome the above defects in the prior art.

[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0005] A heat-shrink tooling for the inner tube and liner tube of a large-size urine tower comprises a base, a lower tire plate, an upper tire plate and several tie rods, wherein the base is a basin structure, the lower tire plate is arranged at the center position inside the base, the upper ends of several tie rods are respectively provided with external threads and nuts, the upper tire plate is provided with several through holes, the outer diameter of the nuts is larger than the diameter of the through holes, the lower ends of several tie rods are respectively connected to the lower tire plate, and the upper ends correspondingly pass through several through holes located on the upper tire plate and are screwed to the nuts, the lower end face of the upper tire plate is provided with a first lining ring, the upper end face of the lower tire plate is provided with a second lining ring, the lower end face of the first lining ring is provided with a first step, the upper end face of the second lining ring is provided with a second step, and the outer edge of the lower end face of the first lining ring and the outer edge of the upper end face of the second lining ring are chamfered respectively.

[0006] In one of the embodiments, a plurality of guide blocks are evenly spaced along the circumferential direction of the lower end surface of the first liner ring and the upper end surface of the second liner ring, and the outer side walls of the guide blocks are inclined.

[0007] In one embodiment, the outer wall of the guide block on the first liner ring and the inclined surface formed by the chamfering treatment of the outer edge of the lower end face of the first liner ring are located in the same plane, and the outer wall of the guide block on the second liner ring and the inclined surface formed by the chamfering treatment of the outer edge of the upper end face of the second liner ring are located in the same plane.

[0008] In one embodiment, the base, the upper tire plate and the lower tire plate are all circular structures, the lower surface of the upper tire plate is provided with a third step and the upper surface of the lower tire plate is provided with a fourth step, the first liner ring is sleeved on the third step, the second liner ring is sleeved on the fourth step, and the inner diameters of the first step and the second step are smaller than the inner diameter of the lining tube of the urea tower, the outer diameter of the third step is larger than the outer diameter of the first step and equal to the outer diameter of the inner tube of the urea tower, and the outer diameter of the fourth step is equal to the outer diameter of the second step and is smaller than the outer diameter of the lining tube and larger than the inner diameter of the lining tube.

[0009] In one of the embodiments, a fifth step is provided on the inner side wall of the base, the height of the fifth step is the same as the height of the second step, and the outer diameter of the fifth step is equal to the outer diameter of the inner cylinder of the urine tower.

[0010] In one embodiment, the lower end surface of the first liner ring is located above the lower end surface of the upper tire plate, and the inner ends of the upper end surfaces of the guide blocks located on the first liner ring are respectively provided with sixth steps, and the sixth step is connected to the lower end surface of the upper tire plate; the upper end surface of the second liner ring is located below the upper end surface of the lower tire plate, and the inner ends of the lower end surfaces of the guide blocks located on the second liner ring are respectively provided with seventh steps, and the seventh step is connected to the upper end surface of the lower tire plate.

[0011] In one of the embodiments, the inner edge of the upper end surface of the base is chamfered.

[0012] In one of the embodiments, it also includes a lifting assembly for lifting the inner tube of the urine tower, the lifting assembly includes an inner tube lifting ear, a lifting ring and a shoulder pole, two of the inner tube lifting ears are symmetrically arranged on the outer side wall of the inner tube about the center line of the inner tube, the lower ends of the two lifting rings are correspondingly connected to the two inner tube lifting ears, and the upper ends are correspondingly connected to the two ends of the shoulder pole.

[0013] In one embodiment, the shoulder pole is in an upwardly arched arc shape.

[0014] In one of the embodiments, a lifting ear plate is provided at the center position of the top end of the lower tire plate, a plurality of lifting eye screws are provided on the upper surface of the upper tire plate, a plurality of tire plate lifting ears are provided on the upper surface of the lifting ear plate, a plurality of rib plates are evenly spaced along the circumferential direction of the outer side wall of the base, and a lifting hole is provided at the center position of the rib plate.

[0015] Compared with the prior art, the utility model provides a heat-fitting tool for the inner cylinder and lining cylinder of a large-sized urea tower. Lining rings are respectively arranged on the upper tire plate and the lower tire plate, and then guide blocks are respectively arranged on the lining rings. At the same time, the outer side walls of the lining rings and the guide blocks are respectively inclined. In this way, when the lining cylinder of the urea tower is fitted on the steps on the lining rings, the guide blocks can play a good guiding role in the fitting operation of the lining cylinder. Even if the lining cylinder is slightly deformed during hoisting due to its large diameter, under the action of the guide blocks, the two ends of the lining cylinder can be conveniently and smoothly fitted on the steps of the upper and lower lining rings. Therefore, the heat-fitting tool provided by the utility model greatly improves the efficiency of the heat-fitting operation of the inner cylinder and lining cylinder of the large-sized urea tower, and at the same time ensures the interference fit between the inner cylinder and the lining cylinder of the urea tower, thereby improving the production quality and efficiency of the entire urea tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 2 It is a schematic cross-sectional structural diagram of the first liner ring in the utility model;

[0018] Figure 3 It is a schematic cross-sectional structural diagram of the second liner ring in the utility model;

[0019] Figure 4 It is a schematic cross-sectional structural diagram of the upper tire plate in the utility model;

[0020] Figure 5 It is a cross-sectional structural schematic diagram of the lower tire plate in the utility model;

[0021] Figure 6 It is a schematic cross-sectional structural diagram of the base in the utility model. DETAILED DESCRIPTION

[0022] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means more than two, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0027] like Figure 1-6 As shown, for the convenience of description, the "up", "down", "left", "right", "front", and "rear" directions in the present invention are based on the attached Figure 1 The directions shown shall prevail;

[0028] A heat-shrink fitting for the inner tube and liner tube of a large-size urine tower, comprising a base 1, a lower tire plate 2, an upper tire plate 3 and eight tie rods 4, wherein the base 1 is a basin structure, the lower tire plate 2 is arranged at the center position inside the base 1, the upper ends of the eight tie rods 4 are respectively provided with external threads and nuts 5, the upper tire plate 3 is provided with a plurality of through holes, the outer diameter of the nuts 3 is larger than the diameter of the through holes on the upper tire plate 3, the lower ends of the eight tie rods 4 are respectively connected with the lower tire plate 2, and the upper ends are correspondingly threaded through the eight through holes on the upper tire plate 3 and are screwed with the nuts 5, the lower end surface of the upper tire plate 3 is provided with a first liner ring 6, the upper end surface of the lower tire plate 2 is provided with a second liner ring 7, the lower end surface of the first liner ring 6 is provided with a first step 8, the upper end surface of the second liner ring 7 is provided with a second step 9, and the outer edge of the lower end surface of the first liner ring 6 and the outer edge of the upper end surface of the second liner ring 7 are respectively chamfered;

[0029] Furthermore, the lower end surface of the first liner ring 6 and the upper end surface of the second liner ring 7 are respectively provided with sixteen guide blocks 10 at even intervals along the circumferential direction thereof, and the outer side walls of the guide blocks 10 are arranged obliquely.

[0030] Preferably, the outer side wall of the guide block 10 on the first liner ring 6 and the inclined surface formed by the chamfering treatment of the outer edge of the lower end face of the first liner ring 6 are located in the same plane, and the outer side wall of the guide block 10 on the second liner ring 7 and the inclined surface formed by the chamfering treatment of the outer edge of the upper end face of the second liner ring 7 are located in the same plane. The utility model provides a heat-fitting tool for the inner cylinder and the liner cylinder of a large-size urea tower, by correspondingly arranging the first liner ring 6 and the second liner ring 7 on the upper tire plate 3 and the lower tire plate 2, and then arranging a plurality of guide blocks 10 on the first liner ring 6 and the second liner ring 7 respectively, and at the same time, the outer side walls of the first liner ring 6, the second liner ring 7 and the guide block 10 are respectively inclined and located in the same plane, so that when the liner When the upper and lower ends of the lining tube 11 of the urine tower are respectively mounted on the steps on the first lining ring 6 and the second lining ring 7, the guide block 10 can play a good guiding role in the mounting operation of the lining tube 11. Even if the lining tube 11 is slightly deformed during hoisting due to its large diameter, the guide block 10 can conveniently expand and guide the two ends of the lining tube 11, and then smoothly mount the lining tube 11 on the steps of the first lining ring 6 and the second lining ring 7, and then mount the inner tube 12 on the outside of the lining tube 11 to complete the heat-mounting operation of the entire urine tower. Therefore, the heat-mounting tooling provided by the utility model can greatly improve the efficiency of the heat-mounting operation of the inner tube 12 and the lining tube 11 of the large-size urine tower.

[0031] In this embodiment, the base 1, the upper tire plate 3 and the lower tire plate 2 are all circular structures, the lower surface of the upper tire plate 3 is provided with a third step 13 and the upper surface of the lower tire plate 2 is provided with a fourth step 14, the first liner ring 6 is sleeved on the third step 13, the second liner ring 7 is sleeved on the fourth step 14, and the inner diameters of the first step 8 and the second step 9 are smaller than the inner diameter of the lining tube 11 of the urea tower, the outer diameter of the third step 13 is larger than the outer diameter of the first step 8, and is equal to the outer diameter of the inner tube 12 of the urea tower, the outer diameter of the fourth step 14 is equal to the outer diameter of the second step 9, and is smaller than the outer diameter of the lining tube 11 and larger than the inner diameter of the lining tube 11,

[0032] Furthermore, a fifth step 15 is provided on the inner side wall of the base 1, the height of the fifth step 15 is the same as the height of the second step 9, and the outer diameter of the fifth step 15 is equal to the outer diameter of the inner tube 12 of the urine tower.

[0033] The two ends of the lining tube 11 are respectively mounted on the first step 8 and the second step 9. The inner tube 12 mounted on the outside of the lining tube 11 is squeezed downward through the first step 8 on the upper carcass 3 by tightening the nut 5 on the pull rod 4 until the lower end surface of the inner tube 12 contacts the seventh step 15. At this time, the hot-fitting operation of the inner tube 12 and the lining tube 11 is completed.

[0034] In this embodiment, the lower end surface of the first liner ring 6 is located above the lower end surface of the upper tire plate 3, and the inner ends of the upper end surfaces of the several guide blocks 10 located on the first liner ring 6 are respectively provided with sixth steps 16, and the sixth step 16 is connected to the lower end surface of the upper tire plate 3. The upper end surface of the second liner ring 7 is located below the upper end surface of the lower tire plate 2, and the inner ends of the lower end surfaces of the several guide blocks 10 located on the second liner ring 7 are respectively provided with seventh steps 17, and the seventh step 17 is connected to the upper end surface of the lower tire plate 2.

[0035] In this embodiment, the inner edge of the upper end surface of the base 1 is chamfered, so that when the inner tube 12 is inserted into the outside of the lining tube 11 and its lower end surface is installed to the seventh step 17, the inclined chamfer of the upper end surface of the base 1 plays a good guiding role for the inner tube 12, making it easier to insert the inner tube 12 into the outside of the lining tube 11.

[0036] In this embodiment, a lifting assembly for lifting the inner cylinder 12 of the urine tower is also included, and the lifting assembly includes an inner cylinder lifting ear 18, a lifting ring 19 and a shoulder pole 20. The two inner cylinder lifting ears 18 are symmetrically arranged on the outer wall of the inner cylinder 12 about the center line of the inner cylinder 12, and the lower ends of the two lifting rings 19 are correspondingly connected to the two inner cylinder lifting ears 18, and the upper ends are correspondingly connected to the two ends of the shoulder pole 20.

[0037] Preferably, the shoulder pole 20 is in the shape of an upwardly arched arc. When the shoulder pole 20 is hooked by the hook of the crane, the hook of the crane will automatically slide to the center position of the arc-shaped shoulder pole 20. Therefore, when the crane lifts the inner cylinder 12, the force-bearing position is the center position of the inner cylinder 12, which can enable the inner cylinder 12 to always maintain an angle perpendicular to the ground during the heat-shrink operation, thereby ensuring the heat-shrink quality of the inner cylinder 12 and the lining cylinder 11.

[0038] In this embodiment, a lifting ear plate 21 is provided at the center position of the top of the lower tire plate 2, a plurality of lifting eye screws 22 are provided on the upper surface of the upper tire plate 3, a plurality of tire plate lifting ears 23 are provided on the upper surface of the lifting ear plate 21, eight rib plates 24 are evenly spaced along the circumferential direction of the outer wall of the base 1, and a lifting hole is provided at the center position of the rib plate 24. The lifting eye screws 22, the tire plate lifting ears 23 and the rib plate 24 with through holes are provided to facilitate the lifting and transportation of the upper tire plate 3, the lower tire plate 2 and the base 1.

[0039] The utility model provides a heat-shrink tooling for the inner cylinder and lining cylinder of a large-size urine tower. First, the inner cylinder lifting ears 18 are respectively welded on the left and right sides of the upper end of the inner cylinder 12 of the urine tower, and the shoulder pole 20 and the lifting ring 19 are assembled to hang the inner cylinder 12 on a traveling crane. The inner cylinder 12 is placed in a furnace and heated to a certain temperature by the traveling crane. The lining cylinder 11 can be put on the second lining ring 7 on the lower tire plate 2 in advance, and then the heated inner cylinder 12 is put on the outside of the lining cylinder 11 from top to bottom, and then the upper tire plate 3 is quickly put on and the nut 5 on the pull rod 4 is tightened to press the inner cylinder 12 into place. After the temperature of the inner cylinder 12 is cooled, the upper tire plate 3 and the inner cylinder lifting ears 18 are removed to complete the heat-shrink operation of the inner cylinder and lining cylinder of the urine tower.

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat-shrink fitting for the inner tube and liner tube of a large-size urine tower, comprising a base, a lower tire plate, an upper tire plate and several tie rods, wherein the base is a basin structure, the lower tire plate is arranged at the center position inside the base, the upper ends of several tie rods are respectively provided with external threads and nuts, the upper tire plate is provided with several through holes, the outer diameter of the nut is larger than the diameter of the through hole, the lower ends of several tie rods are respectively connected to the lower tire plate, and the upper ends are correspondingly passed through several through holes located on the upper tire plate and screwed with the nuts, characterized in that: The lower end face of the upper tire plate is provided with a first liner ring, the upper end face of the lower tire plate is provided with a second liner ring, the lower end face of the first liner ring is provided with a first step, the upper end face of the second liner ring is provided with a second step, and the outer edge of the lower end face of the first liner ring and the outer edge of the upper end face of the second liner ring are chamfered respectively.

2. The shrink fitting for the inner cylinder and liner cylinder of a large-size urea tower according to claim 1 is characterized in that: The lower end surface of the first liner ring and the upper end surface of the second liner ring are respectively provided with a plurality of guide blocks evenly spaced along the circumferential direction thereof, and the outer side walls of the guide blocks are inclined.

3. The shrink fitting for the inner cylinder and lining cylinder of a large-size urea tower according to claim 2, characterized in that: The outer wall of the guide block located on the first liner ring and the inclined surface formed by the chamfering treatment of the outer edge of the lower end face of the first liner ring are located in the same plane, and the outer wall of the guide block located on the second liner ring and the inclined surface formed by the chamfering treatment of the outer edge of the upper end face of the second liner ring are located in the same plane.

4. The shrink fitting tool for the inner cylinder and lining cylinder of a large-size urea tower according to claim 3 is characterized in that: The base, the upper tire plate and the lower tire plate are all circular structures, the lower surface of the upper tire plate is provided with a third step and the upper surface of the lower tire plate is provided with a fourth step, the first lining ring is sleeved on the third step, the second lining ring is sleeved on the fourth step, and the inner diameters of the first step and the second step are smaller than the inner diameter of the lining tube of the urea tower, the outer diameter of the third step is larger than the outer diameter of the first step and is equal to the outer diameter of the inner tube of the urea tower, and the outer diameter of the fourth step is equal to the outer diameter of the second step and is smaller than the outer diameter of the lining tube and larger than the inner diameter of the lining tube.

5. The shrink fitting device for the inner cylinder and lining cylinder of a large-size urea tower according to claim 4, characterized in that: A fifth step is arranged on the inner side wall of the base, the height of the fifth step is the same as the height of the second step, and the outer diameter of the fifth step is equal to the outer diameter of the inner cylinder of the urine tower.

6. The shrink fitting tool for the inner cylinder and lining cylinder of a large-size urea tower according to claim 4, characterized in that: The lower end surface of the first liner ring is located above the lower end surface of the upper tire plate, and the inner ends of the upper end surfaces of the guide blocks located on the first liner ring are respectively provided with sixth steps, and the sixth step is connected to the lower end surface of the upper tire plate. The upper end surface of the second liner ring is located below the upper end surface of the lower tire plate, and the inner ends of the lower end surfaces of the guide blocks located on the second liner ring are respectively provided with seventh steps, and the seventh step is connected to the upper end surface of the lower tire plate.

7. The shrink fitting tool for the inner cylinder and lining cylinder of a large-size urea tower according to claim 5, characterized in that: The inner edge of the upper end surface of the base is chamfered.

8. The shrink fitting tool for the inner cylinder and lining cylinder of a large-size urea tower according to claim 5, characterized in that: It also includes a lifting assembly for lifting the inner tube of the urine tower, the lifting assembly includes an inner tube lifting ear, a lifting ring and a shoulder pole, the two inner tube lifting ears are symmetrically arranged on the outer side wall of the inner tube about the center line of the inner tube, the lower ends of the two lifting rings are correspondingly connected to the two inner tube lifting ears, and the upper ends are correspondingly connected to the two ends of the shoulder pole.

9. The shrink fitting device for the inner cylinder and liner cylinder of a large-size urea tower according to claim 8, characterized in that: The shoulder pole is in an upwardly arched arc shape.

10. The shrink fitting tool for the inner cylinder and lining cylinder of a large-size urea tower according to claim 9, characterized in that: A lifting ear plate is arranged at the center position of the top end of the lower tire plate, a plurality of lifting eye screws are arranged on the upper surface of the upper tire plate, a plurality of tire plate lifting ears are arranged on the upper surface of the lifting ear plate, a plurality of rib plates are arranged on the outer side wall of the base at even intervals along its circumferential direction, and a lifting hole is arranged at the center position of the rib plate.

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