CN219485603U - Adjustable circumferential support device - Google Patents

Abstract

The utility model provides an adjustable circumferential support device, and belongs to the technical field of pressure vessel manufacturing. The supporting device solves the problems of poor manufacturability and low assembly efficiency of the existing supporting device. The adjustable circumferential support device comprises a support seat, wherein a threaded through hole is formed in the support seat, a support rod is connected in the threaded through hole in a threaded mode, a spanner action part is arranged at the first end of the support rod, and a heat insulation rod is arranged at the second end of the support rod. The utility model can realize standardized production, reduce manufacturing specifications and enlarge the range of applicable scenes; during installation, the installation efficiency is improved, and the installation time is reduced; finally, the manufacturing period of the product is shortened, and the production cost is reduced.

Description

Adjustable circumferential support device

Technical Field

The utility model belongs to the technical field of pressure vessel manufacturing, and relates to an adjustable circumferential support device for circumferentially supporting a double-layer shell structure.

Background

In the manufacture of pressure vessels, a double shell construction is often encountered. The double-layer shell structure is generally formed by sleeving two cylindrical barrels with different diameters and coincident axes, and two ends of each cylindrical barrel are respectively provided with a sealing head. A number of circumferential support means are provided in the annular space between the inner cylinder 1' and the outer cylinder 2' to ensure coaxiality of the inner and outer cylinders 2 '.

The structure of the existing circumferential support means is shown in fig. 1 and 2, and includes a sleeve 3', a support plate 4' welded to the sleeve 3', and a heat insulating rod 5' inserted into the sleeve 3 '. When the outer cylinder body 2' and the inner cylinder body 1' are coaxial, a circumferential supporting hole is formed in the outer cylinder body 2' according to design requirements, and the position of the circumferential supporting hole is matched with a supporting base plate 6' welded on the inner cylinder body 1' in advance. The circumferential supporting device is inserted into the corresponding circumferential supporting hole on the outer cylinder body 2', the length of the heat insulation rod 5' is ground for a plurality of times, the supporting plate 4' can be embedded into the outer cylinder body 2', the two are welded together, and then the reinforcing plate 7', the supporting plate 4' and the outer cylinder body 2' are welded together.

When the heat insulation rods 5' are fed, a certain machining allowance is reserved according to the interval of the interlayer space, and because roundness errors and installation errors exist in the manufacturing process of the inner cylinder body 2', the length of each heat insulation rod 5' at each supporting position is different even after the axes of the inner cylinder body 2' are coaxially adjusted, and the heat insulation rods 5' are required to be polished during installation, the mode is poor in manufacturability, low in assembly efficiency and incapable of standardizing parts.

Disclosure of Invention

The utility model aims at solving the problems in the prior art and provides an adjustable circumferential support device capable of effectively reducing the installation time during installation.

The aim of the utility model can be achieved by the following technical scheme:

the adjustable circumferential support device comprises a support seat, wherein a threaded through hole is formed in the support seat, a support rod is connected in the threaded through hole in a threaded mode, a spanner action part is arranged at the first end of the support rod, and a heat insulation rod is arranged at the second end of the support rod.

After the coaxiality of the outer cylinder body and the inner cylinder body is adjusted, the adjustable circumferential support device is placed in the corresponding circumferential support hole on the outer cylinder body, so that the heat insulation rod vertically props against the support base plate on the inner cylinder body, and then the spanner is connected with the spanner action part to adjust the length of the support device, thereby achieving the aim of ensuring the coaxiality of the outer cylinder body and the inner cylinder body. After the heat insulation rod is adjusted in place, the supporting seat is connected to the outer cylinder body, and the heat insulation rod is abutted against the outer wall of the inner cylinder body.

In the adjustable circumferential support device, a guide hole axially communicated with the threaded through hole is formed in the support seat, a sliding sleeve is slidably matched in the guide hole, the heat insulation rod is connected to the sliding sleeve, and the second end of the support rod is connected with the sliding sleeve.

The guide holes guide the sliding sleeve, so that the stability of the sliding sleeve during movement can be improved, the stability of the heat insulation rod during movement can be improved, and the heat insulation rod can be effectively ensured to be perpendicular to the support base plate.

In the above-mentioned circumference strutting arrangement with adjustable, the one end that the heat insulation stick is close to sliding sleeve is equipped with spacing cavity, be equipped with on the sliding sleeve with spacing cavity intercommunication's through-hole of stepping down, the second end of bracing piece passes the through-hole of stepping down and stretches into spacing cavity, be equipped with the annular spacing portion of being spacing in spacing cavity by the axial on the bracing piece.

Because the annular limiting part is axially limited in the limiting concave cavity, when the supporting rod axially moves, the heat insulation rod can be driven to move together, and the heat insulation rod is prevented from being separated from the supporting rod.

In the above-mentioned adjustable circumferential support device, the through hole of stepping down is the screw hole, annular spacing portion is the first screw thread section of locating on the bracing piece, first screw thread section can with the through hole screw thread fit of stepping down.

Because the first thread section can be in threaded fit with the abdication through hole, the first thread section can conveniently enter the limit concave cavity from the abdication through hole. The external diameter of the first thread section is larger than that of the supporting rod, and when the first thread section enters the limiting concave cavity, the sliding sleeve can axially limit the limiting concave cavity.

In the adjustable circumferential support device, the support rod is in threaded fit with the threaded through hole through a second threaded section arranged on the support rod, and the rotation direction of the threads on the second threaded section is opposite to that of the threads on the first threaded section.

Because the direction of rotation of the threads on the first thread segment is opposite to the direction of rotation of the threads on the second thread segment, when the second thread segment rotates in the threaded through hole, the first thread segment cannot be separated from the yielding through hole.

In the above-mentioned adjustable circumferential support device, the second end of bracing piece has hemisphere portion, be equipped with the hemisphere chamber in the spacing cavity, hemisphere portion can rotate around the central line of bracing piece in the hemisphere intracavity.

In the adjustable circumferential support device, an axially extending chute is arranged in the guide hole, and a sliding strip is arranged on the sliding sleeve and is in sliding fit with the chute.

The sliding strip protrudes outwards along the radial direction of the outer wall of the sliding sleeve, the sliding groove is in sliding fit with the sliding strip, the sliding sleeve is guided in the axial direction, and the sliding sleeve can be limited to rotate in the circumferential direction.

In the adjustable circumferential support device, one end, far away from the supporting seat, of the sliding sleeve is provided with a mounting hole, one end, close to the supporting rod, of the heat insulation rod extends into the mounting hole, and the heat insulation rod is fixedly connected with the sliding sleeve through a countersunk head screw.

In the above adjustable circumferential support device, the wrench action portion is a hexagonal head.

In the adjustable circumferential support device, the wrench action part is an inner hexagonal hole.

Compared with the prior art, the adjustable circumferential support device has the following advantages:

the rotation direction of the threads on the first thread section is opposite to that of the threads on the second thread section, so that the threads cannot be separated when the threads rotate to adjust the relative movement of the support length; the adoption of the stress type of spherical contact can ensure that the ball cannot be blocked and has better stress in the length adjustment process; the sliding groove and the sliding strip are arranged, so that the part moves linearly during length adjustment; standardized production can be realized, manufacturing specifications are reduced, and the application scene range is enlarged; during installation, the installation efficiency is improved, and the installation time is reduced; finally, the manufacturing period of the product is shortened, and the production cost is reduced.

Drawings

Fig. 1 is a radial cross-sectional view of an outer cylinder and an inner cylinder of the prior art.

Fig. 2 is an enlarged schematic view at a in fig. 1.

Fig. 3 is a cross-sectional view of a circumferential support device provided by the present utility model.

Fig. 4 is an exploded schematic view of the circumferential support device provided by the present utility model.

In the figure, 1, an inner cylinder body; 2. an outer cylinder; 3. the supporting seat; 4. a threaded through hole; 5. a support rod; 6. a wrench action part; 7. a heat insulating rod; 8. a guide hole; 9. a sliding sleeve; 10. limiting the concave cavity; 11. a relief through hole; 12. a first thread segment; 13. a second thread segment; 14. a hemispherical portion; 15. a hemispherical cavity; 16. a chute; 17. a slide bar; 18. a mounting hole; 19. countersunk head screws; 20. a support backing plate; 21. reinforcing plate.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

An adjustable circumferential support device as shown in fig. 3 is provided between the inner cylinder 1 and the outer cylinder 2 for ensuring coaxiality between the inner cylinder 1 and the outer cylinder 2 and fixing the inner cylinder 1 and the outer cylinder 2 together. The heat-insulating support comprises a supporting seat 3 with one end acting on a reinforcing plate 21 of an outer cylinder 2, wherein a coaxially arranged threaded through hole 4 is formed in the supporting seat 3, a supporting rod 5 is connected in the threaded through hole 4 in a threaded manner, a spanner action part 6 is arranged at a first end (the end close to the outer cylinder 2) of the supporting rod 5, a second threaded section 13 (right-handed threads) is arranged at the position close to the spanner action part 6, the second threaded section 13 is in threaded fit with the threaded through hole 4, a heat-insulating rod 7 is coaxially arranged at a second end (the end close to the inner cylinder 1) of the supporting rod 5, and one end, far away from the supporting rod 5, of the heat-insulating rod 7 abuts against a supporting base plate 20 of the inner cylinder 1.

In this embodiment, as shown in fig. 3 and 4, the wrench working part 6 is a hexagonal head.

In some other embodiments, the wrench action portion 6 is a socket.

As shown in fig. 3 and 4, the supporting seat 3 is provided with a guide hole 8 coaxially arranged with the threaded through hole 4 and axially communicated with the threaded through hole, the outer diameter of the guide hole 8 is larger than the aperture of the threaded through hole 4, a sliding sleeve 9 is slidably matched in the guide hole 8, the second end of the supporting rod 5 is connected with the sliding sleeve 9, and the heat insulation rod 7 is connected at one end, far away from the supporting rod 5, of the sliding sleeve 9.

In this embodiment, an axially extending chute 16 is provided in the guide hole 8, and the sliding sleeve 9 has a sliding strip 17 thereon, and the sliding strip 17 is slidably engaged with the chute 16. The sliding strip 17 protrudes radially outwards along the outer wall of the sliding sleeve 9, and the sliding groove 16 is in sliding fit with the sliding strip 17, guides the sliding sleeve 9 in the axial direction and can limit the circumferential rotation of the sliding sleeve 9 in the circumferential direction. The slide groove 16 and the slide bar 17 define a circumferential rotation of the sliding sleeve 9, and in order to allow the support rod 5 to rotate freely, the second end of the support rod 5 should be connected in rotation with the sliding sleeve 9.

In order to realize the rotary connection of the support rod 5 and the sliding sleeve 9, as shown in fig. 3 and 4, a limit concave cavity 10 is arranged at one end of the heat insulation rod 7, which is close to the sliding sleeve 9, a yielding through hole 11 communicated with the limit concave cavity 10 is arranged on the sliding sleeve 9, a second end of the support rod 5 passes through the yielding through hole 11 and stretches into the limit concave cavity 10, and an annular limit part axially limited in the limit concave cavity 10 is arranged on the support rod 5.

As shown in fig. 3 and 4, the relief through hole 11 is a threaded hole, the annular limiting part is a first threaded section 12 arranged on the support rod 5, and the first threaded section 12 can be in threaded fit with the relief through hole 11. The direction of rotation of the threads on the second thread segments 13 is opposite to the direction of rotation of the threads on the first thread segments 12. Because the first thread segment 12 can be in threaded fit with the relief through hole 11, the first thread segment 12 can conveniently enter the limit cavity 10 from the relief through hole 11. The outer diameter of the first thread section 12 is larger than that of the supporting rod 5, and when the first thread section 12 enters the limit concave cavity 10, the sliding sleeve 9 can axially limit the limit concave cavity. Since the direction of rotation of the threads on the first thread segments 12 is opposite to the direction of rotation of the threads on the second thread segments 13, the first thread segments 12 are not pulled out of the relief holes 11 when the second thread segments 13 are rotated in the threaded through holes 4.

In order to ensure that the locking is not blocked and the supporting rod is stressed well in the length adjustment process, as shown in fig. 3 and 4, the second end of the supporting rod 5 is provided with a hemispherical part 14 coaxially arranged, a hemispherical cavity 15 coaxially arranged is arranged in the limiting concave cavity 10, and the hemispherical part 14 can rotate around the central line of the supporting rod 5 in the hemispherical cavity 15.

In order to facilitate the installation of the insulating rod 7, as shown in fig. 3 and 4, the end of the sliding sleeve 9 far from the supporting seat 3 is provided with an installation hole 18, one end of the insulating rod 7 near the supporting rod 5 extends into the installation hole 18 and abuts against the bottom of the installation hole 18, and the insulating rod 7 is fixedly connected with the sliding sleeve 9 through a countersunk screw 19 extending from the side.

During assembly, the heat insulation rod 7 is inserted into the mounting hole 18 of the sliding sleeve 9, the small Kong Yingdui formed on the side surfaces of the insulating rod and the sliding sleeve 9 in advance is paid attention to, the countersunk head screw 19 is screwed into the insulating rod through the two aligned small holes to be screwed and fixed, and the end surface of the screw head of the countersunk head screw 19 is slightly lower than the cylindrical surface of the sliding sleeve 9. Then the first thread section 12 (left-handed thread) on the support rod 5 is completely screwed into the abdication through hole 11, so that the hemispherical part 14 on the support rod 5 can freely rotate along the central line of the support rod 5 in the hemispherical cavity 15. Then the combination of the heat insulation rod 7, the sliding sleeve 9, the countersunk head screw 19 and the supporting rod 5 is inserted into the sliding groove 16 of the guide hole 8 through the sliding strip 17 protruding from the sliding sleeve 9, then a socket wrench is used to pass through the threaded through hole 4 of the supporting seat 3 and then sleeve the hexagonal head on the supporting rod 5, and the sliding sleeve 9 is retracted into the middle of the sliding groove 16 towards the inside of the supporting seat 3 by rotating the wrench. So far, the single adjustable circumferential support device is assembled.

When the installation, after the axiality adjustment of interior barrel 1 and outer barrel 2 finishes, put into the appointed downthehole on the outer barrel 2 with the strutting arrangement that assembles from outside to inside, make adiabatic stick 7 vertically push up on the backing plate 20 of interior barrel 1, then use the socket wrench to entangle the length of hex head adjustment strutting arrangement on the bracing piece 5: if the end face of the supporting seat 3, which is close to one end of the outer cylinder 2, is higher than the outer wall of the outer cylinder 2, the socket wrench is rotated anticlockwise, so that the supporting rod 5 moves towards the outer cylinder 2 and moves along with the combination body with the heat insulation rod 7, the sliding sleeve 9 and the heat insulation rod 7 along the sliding groove 16 in the same direction, and at the moment, the hemispherical body of the supporting rod 5 rotates in the hemispherical cavity 15 of the heat insulation rod 7; otherwise, the socket wrench is rotated clockwise. And welding the end face of the supporting seat 3, which is close to one end of the outer cylinder body 2, and the outer wall of the outer cylinder body 2 together after the end face is flush with the outer wall. And then the supporting rod 5 is screwed again clockwise, and finally the ball end of the heat insulation rod 7 is tightly propped against the supporting base plate 20 of the inner cylinder 1. The reinforcing plate 21 on the outer cylinder 2 is then placed over the support 3 with its centers overlapping, and finally the reinforcing plate 21 is welded to the outer cylinder 2, so that the circumferential forces generated to maintain the coaxiality of the inner cylinder 1 and the outer cylinder 2 are transmitted to the support bars 5 via the heat insulating rods 7 and distributed to the outer cylinder 2 wall via the reinforcing plate 21.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. The utility model provides a circumference strutting arrangement with adjustable, its characterized in that includes bearing (3), be equipped with screw thread through-hole (4) on bearing (3), screw thread through-hole (4) internal thread is connected with bracing piece (5), the first end of bracing piece (5) is equipped with spanner effect portion (6), the second end of bracing piece (5) is equipped with adiabatic stick (7).

2. The adjustable circumferential support device according to claim 1, wherein the bearing seat (3) is provided with a guide hole (8) axially communicated with the threaded through hole (4), a sliding sleeve (9) is slidably matched in the guide hole (8), the heat insulation rod (7) is connected to the sliding sleeve (9), and the second end of the support rod (5) is connected to the sliding sleeve (9).

3. The adjustable circumferential support device according to claim 2, wherein a limit cavity (10) is arranged at one end of the heat insulation rod (7) close to the sliding sleeve (9), a yielding through hole (11) communicated with the limit cavity (10) is arranged on the sliding sleeve (9), a second end of the support rod (5) penetrates through the yielding through hole (11) and stretches into the limit cavity (10), and an annular limit part axially limited in the limit cavity (10) is arranged on the support rod (5).

4. An adjustable circumferential support device according to claim 3, characterized in that the relief through hole (11) is a threaded hole, the annular limiting part is a first threaded section (12) arranged on the support rod (5), and the first threaded section (12) can be in threaded fit with the relief through hole (11).

5. Adjustable circumferential support device according to claim 4, characterized in that the support bar (5) is screwed with the threaded through hole (4) by means of a second threaded section (13) provided thereon, the direction of rotation of the threads on the second threaded section (13) being opposite to the direction of rotation of the threads on the first threaded section (12).

6. An adjustable circumferential support device according to claim 3, characterized in that the second end of the support bar (5) has a hemispherical portion (14), a hemispherical cavity (15) is provided in the limit cavity (10), and the hemispherical portion (14) is rotatable in the hemispherical cavity (15) about the centre line of the support bar (5).

7. Adjustable circumferential support device according to claim 2, characterized in that the guiding hole (8) is provided with an axially extending chute (16), the sliding sleeve (9) is provided with a sliding strip (17), and the sliding strip (17) is in sliding fit with the chute (16).

8. The adjustable circumferential support device according to claim 2, characterized in that the end of the sliding sleeve (9) far away from the supporting seat (3) is provided with a mounting hole (18), the end of the heat insulation rod (7) near the supporting rod (5) stretches into the mounting hole (18), and the heat insulation rod (7) is fixedly connected with the sliding sleeve (9) through a countersunk head screw (19).

9. Adjustable circumferential support device according to claim 1, characterized in that the wrench action part (6) is a hexagonal head.

10. Adjustable circumferential support device according to claim 1, characterized in that the wrench action part (6) is an internal hexagonal hole.