Maintenance tool for locking ring in thread locking ring heat exchanger

Abstract

An overhauling tool for a locking ring in a threaded locking ring heat exchanger comprises a transmission disc, a transmission component, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring, a locking ring and a locking ring, the transmission disc is provided with a first disc face which is used for being in butt joint with the outer end face of the locking ring so that the transmission disc can drive the locking ring to coaxially rotate together. The ring wall of the bearing ring is arranged on the periphery of the transmission disc in a sleeving mode in the circumferential direction, and the ring wall is provided with a first ring-shaped end face used for being in butt joint with the end face, where the locking ring is located, of the barrel; the depth of the annular wall in the axial direction is matched with the thickness of the locking ring in the axial direction, so that the annular wall can bear the locking ring when the transmission disc drives the locking ring to rotate outwards relative to the cylinder body and is separated from the cylinder body; an access hole penetrating through the wall thickness is formed in the position, corresponding to the locking ring, of the ring wall; and the supporting seat is provided with a supporting part, so that the annular wall of the bearing ring separated from the cylinder body is vertically supported on the supporting seat, and the access hole is exposed. The locking ring is convenient to overhaul, disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a maintenance tool for a locking ring in a threaded locking ring heat exchanger. Background Art

[0002] Existing threaded locking ring heat exchangers, such as the Chinese invention patent application "A Threaded Locking Ring Heat Exchanger" with application number CN201510592290.8 and application publication number CN105202966A, include a tube-side cylinder and a shell-side cylinder connected in sequence, a connecting pipe is provided on the outside of the tube-side cylinder, a pressure cover is provided at the tail end of the inside of the tube-side cylinder, the inner end face of the pressure cover is abutted against the sealing disk, a threaded pressure ring is provided between the pressure cover and the tube-side cylinder, two pressure rods are provided side by side on the threaded pressure ring from the inside to the outside, a pressure ring, a splitting ring, an inner sleeve of the box and a tube sheet are provided in sequence inside the sealing disk, a sealing ring is also provided between the sealing disk and the pressure ring, a bracket is also provided on the inner ring of the pressure ring, and the splitting ring is also fixed by a top pressure bolt.

[0003] When the threads on the outer ring of a locking ring (i.e., a threaded pressure ring) need to be inspected, the locking ring must be removed for inspection. However, the locking ring is large in size and heavy in weight, so how to inspect the locking ring stably and conveniently is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a maintenance tool for the locking ring in a threaded locking ring heat exchanger in view of the current status of the existing technology, so as to facilitate the maintenance and disassembly of the locking ring.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a maintenance tool for the locking ring in a threaded locking ring heat exchanger, wherein the locking ring is threadedly connected to the port of the heat exchanger cylinder, and is characterized in that the maintenance tool includes:

[0006] A transmission disc is provided with a transmission component on which an external power member applies force so that the transmission disc can rotate about its own central axis; and the transmission disc has a first disc surface for docking with the outer end surface of the locking ring so that the transmission disc can drive the locking ring to rotate coaxially;

[0007] The receiving ring has an annular wall circumferentially sleeved on the outer periphery of the transmission disc and opposite to the edge of the transmission disc, and the annular wall has a first annular end surface for docking with the end surface of the cylinder where the locking ring is located, so that the annular wall can be fixed relative to the cylinder; and the axial depth of the annular wall matches the axial thickness of the locking ring, so that when the transmission disc and the locking ring are rotated outward relative to the cylinder and separated from the cylinder, the annular wall can receive the locking ring; and an inspection port that penetrates the wall thickness is opened on the annular wall at a position corresponding to the locking ring;

[0008] The support base has a support portion for vertically supporting the circumferential wall of the receiving ring separated from the cylinder body thereon with the inspection opening exposed.

[0009] Before maintenance, the first end face of the drive disk can be docked to the outer end face of the locking ring, and the first circumferential end face of the receiving ring can be docked to the end face of the heat exchanger cylinder body. Then, an external power component acts on the transmission component of the drive disk, so that the drive disk drives the locking ring to rotate circumferentially together, and the locking ring rotates outwards relative to the cylinder body to separate from the cylinder body. At this time, the circumferential wall of the receiving ring is located outside the locking ring and can receive the locking ring. After the receiving ring separates from the cylinder body, the receiving ring with the locking ring thereon can be placed on the support portion of the support base by means of hoisting or the like. Then, the threads on the locking ring can be maintained through the inspection opening on the receiving ring.

[0010] After maintenance is completed, the receiving ring with the locking ring thereon can be moved to the port of the heat exchanger cylinder body by means of hoisting or the like. The first circumferential end face of the receiving ring is docked to the end face of the heat exchanger cylinder body. Then, an external power component acts on the transmission component of the drive disk, so that the drive disk drives the locking ring to rotate circumferentially together, and the locking ring rotates inwards relative to the cylinder body and is threadedly connected into the cylinder body port, which is convenient for operation.

[0011] Therefore, the utility model is convenient for disassembling, assembling and maintaining the locking ring, and the operation is relatively safe during the whole process.

[0012] To further facilitate maintenance, preferably, the part of the circumferential wall for upwardly supporting the locking ring is hollowed out, and at least two roller shafts are arranged at intervals in the circumferential direction. Each roller shaft extends along the axial direction of the circumferential wall and is constrained to the circumferential wall in a manner capable of rotating around its own central axis, so that the locking ring located inside the circumferential wall can rotate circumferentially on each roller shaft under the action of an external force. In this way, the threads on the locking ring can be comprehensively maintained by rotating the locking ring, improving the maintenance efficiency.

[0013] Preferably, the circumferential wall is C-shaped with the C-shaped opening facing upwards and serves as the above-mentioned inspection opening.

[0014] It further includes an upwardly arched annular cover plate, one end of which is rotatably connected to the edge of the C-shaped opening of the circumferential wall, and the rotation axis extends along the axial direction of the circumferential wall, so that the annular cover plate can be turned up and down relative to the circumferential wall to open or close the C-shaped opening. When the C-shaped opening is closed, the annular cover plate and the circumferential wall form a closed loop. During use, the C-shaped opening can be opened to maintain the threads on the locking ring.

[0015] Furthermore, the drive disk is arranged to be separable from the receiving ring through the C-shaped opening. In this way, the drive disk and the locking ring can be selectively separated during maintenance.

[0016] In the above solution, the above driving disc can be disc-shaped or other shapes. Preferably, the driving disc has a plurality of driving arms arranged radially around the central area of the driving disc, and the surfaces on one side of each driving arm together form the first disc surface of the driving disc. The driving disc composed of a plurality of driving arms is relatively light in weight, and a single driving arm can be acted upon by components such as a jack to loosen the driving disc. After the driving disc is loosened, an external power component can act on the driving component on the driving disc.

[0017] Further, the driving disc is cross-shaped.

[0018] Further, connection holes adapted to the first threaded holes on the outer end surface of the corresponding locking ring are provided at the outer end portions of each driving arm, so that the driving arm and the locking ring can be connected by a first screw.

[0019] Preferably, a transmission shaft extending axially outward is provided at the center of the second disc surface of the driving disc as the above-mentioned driving component;

[0020] On the side of the ring wall facing away from the first annular end surface, an end plate is provided, and a support groove for the transmission shaft to be supported thereon is provided at the position corresponding to the transmission shaft on the end plate.

[0021] In the above solutions, preferably, a plurality of mounting holes are circumferentially spaced on the first annular end surface of the ring wall to correspond to the second threaded holes on the end surface of the cylinder body, so that the ring wall and the end surface of the cylinder body can be connected by a second screw.

[0022] Preferably, the support seat has a bottom plate and lateral vertical plates arranged on both sides of the bottom plate. The two lateral vertical plates and the bottom plate together define an upward-opening groove as the above-mentioned support part, and the upper edges of each lateral vertical plate are arc-shaped edges that are recessed downward;

[0023] When the receiving ring is supported on the groove, the receiving ring is located between the two lateral vertical plates and supported on the bottom plate.

[0024] Compared with the prior art, the advantages of the present utility model are as follows: By designing the maintenance tooling into a structure with a driving disc, a receiving ring, and a support seat, before maintenance, the first disc surface of the driving disc can be docked to the outer end surface of the locking ring, and the first annular end surface of the receiving ring can be docked to the end surface of the heat exchanger cylinder body. Then, an external power component acts on the driving component of the driving disc, so that the driving disc drives the locking ring to rotate circumferentially together, causing the locking ring to rotate outward relative to the cylinder body and disengage from the cylinder body. At this time, the ring wall of the receiving ring is located outside the locking ring and can receive the locking ring. After the receiving ring disengages from the cylinder body, the receiving ring with the locking ring can be placed on the support part of the support seat by means of hoisting or the like, and the threads on the locking ring can be maintained through the maintenance opening on the receiving ring;

[0025] After the overhaul is completed, the receiving ring with the locking ring can be moved to the port of the heat exchanger cylinder by means of hoisting or the like. The first annular end face of the receiving ring is butted against the end face of the heat exchanger cylinder, and then an external power component acts on the transmission component of the transmission disk, so that the transmission disk drives the locking ring to rotate circumferentially together, and the locking ring rotates inward relative to the cylinder body and is threadedly connected into the cylinder port, which is convenient for operation;

[0026] Therefore, the utility model is convenient for disassembling, assembling and overhauling the locking ring, and the operation is relatively safe during the whole process. Brief Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the overhaul tooling of the embodiment of the utility model in the overhaul state;

[0028] Figure 2 is Figure 1 a schematic structural diagram of the overhaul tooling from another perspective in;

[0029] Figure 3 is Figure 1 a sectional view of the overhaul tooling in;

[0030] Figure 4 is a usage state diagram when the transmission disk drives the locking ring in the heat exchanger cylinder to rotate together in the embodiment of the utility model;

[0031] Figure 5 is another usage state diagram when the transmission disk drives the locking ring in the heat exchanger cylinder to rotate together in the embodiment of the utility model;

[0032] Figure 6 is yet another usage state diagram when the transmission disk drives the locking ring in the heat exchanger cylinder to rotate together in the embodiment of the utility model;

[0033] Figure 7 is a sectional view when the receiving ring, the transmission disk and the heat exchanger of the embodiment of the utility model are assembled together (the locking ring is threadedly connected in the heat exchanger cylinder);

[0034] Figure 8 is a sectional view when the receiving ring, the transmission disk and the heat exchanger of the embodiment of the utility model are assembled together (the locking ring is separated from the heat exchanger cylinder);

[0035] Figure 9 is another schematic structural diagram of the overhaul tooling of the embodiment of the utility model in the overhaul state (the transmission disk is separated from the locking ring). Detailed Embodiment

[0036] The following further describes the present utility model in detail with reference to the embodiments of the drawings.

[0037] AsFigures 1-9 As shown in the figure, it is a preferred embodiment of a maintenance tool for the locking ring in a threaded locking ring heat exchanger of the present utility model. Among them, the threaded locking ring heat exchanger is a prior art, which includes a cylinder body 2 and a locking ring 1, and the locking ring 1 is threadedly connected to the port of the cylinder body 1. And a plurality of first threaded holes 11 are arranged at intervals along the circumferential direction on the outer end surface of the locking ring 1, and a plurality of second threaded holes are arranged at intervals along the circumferential direction on the end surface of the cylinder body 2 where the locking ring 1 is located.

[0038] The above-mentioned maintenance tool includes a driving disk 3, a receiving ring 4 and a support seat 5.

[0039] A driving component 30 is provided on the driving disk 3 for an external power component 300 to apply force thereon so that the driving disk 3 can rotate around its own central axis; and the driving disk 3 has a first disk surface 31 for docking to the outer end surface of the locking ring 1 so that the driving disk 3 can drive the locking ring 1 to rotate coaxially together. Specifically, the driving disk 3 is in a cross shape and has four driving arms 3a arranged radially with the central area of the driving disk 3 as the center. The surfaces on one side of each driving arm 3a together constitute the first disk surface 31 of the driving disk 3. And connection holes 32 adapted to the first threaded holes 11 on the outer end surface of the corresponding locking ring 1 are provided at the outer ends of each driving arm 3a, so that the driving arm 3a and the locking ring 1 can be connected by a first screw. At the same time, a transmission shaft extending axially outward is provided at the center of the second disk surface of the driving disk 3 as the above-mentioned driving component 30, and the external power component 300 is a hydraulic wrench acting on the driving component 30.

[0040] The annular wall 41 of the above-mentioned receiving ring 4 is sleeved on the outer periphery of the driving disc 3 along the circumferential direction and is opposite to the edge of the driving disc 3. The annular wall 41 has a first annular end face 411 for docking to the end face of the cylinder body 2 where the locking ring 1 is located, so that the annular wall 41 can be fixed relative to the cylinder body 2. Specifically, a plurality of mounting holes 412 are circumferentially spaced on the first annular end face 411 of the annular wall 41 to correspond to the second threaded holes on the end face of the cylinder body 2, so that the annular wall 41 and the end face of the cylinder body 2 can be connected by the second screws. At the same time, the depth of the annular wall 41 in the axial direction matches the thickness of the locking ring 1 in the axial direction, so that when the driving disc 3 rotates outwards relative to the cylinder body 2 with the locking ring 1, the annular wall 41 can receive the locking ring 1. And the annular wall 41 is C-shaped with the C-shaped opening facing upwards and serves as the inspection opening 410; there is also an upwardly arched annular cover plate 44, one end of which is rotatably connected to the edge of the C-shaped opening of the annular wall 41, and the rotation axis extends along the axial direction of the annular wall 41, so that the annular cover plate 44 can be turned up and down relative to the annular wall 41 to open or close the C-shaped opening. When the C-shaped opening is opened, the driving disc 3 can be separated from the receiving ring 4 through the C-shaped opening. When the C-shaped opening is closed, the annular cover plate 44 and the annular wall 41 form a closed loop. At the same time, the lower part of the annular wall 41 is hollowed out, and at least two roller shafts 42 are circumferentially spaced. Each roller shaft 42 extends along the axial direction of the annular wall 41 and is constrained to the annular wall 41 in a manner that can rotate around its own central axis, so that the locking ring 1 located inside the annular wall 41 can rotate circumferentially on each roller shaft 42 under the action of an external force.

[0041] At the same time, in this embodiment, a end plate 43 is provided on the side of the annular wall 41 facing away from the first annular end face 411, and a support groove 430 for supporting the transmission shaft is provided on the end plate 43 at the position corresponding to the transmission shaft.

[0042] The above-mentioned support seat 5 has a support part for vertically supporting the annular wall 41 of the receiving ring 4 separated from the cylinder body 2 with the inspection opening 410 exposed. Specifically, the support seat 5 has a bottom plate 51 and lateral vertical plates 52 arranged on both sides of the bottom plate 51. The two lateral vertical plates 52 and the bottom plate 51 jointly define a groove with an upward opening as the above-mentioned support part, and the upper edge of each lateral vertical plate 52 is an arc-shaped edge that is recessed downward;

[0043] When the receiving ring 4 is supported on the groove, the receiving ring 4 is located between the two lateral vertical plates 52 and is supported on the bottom plate 51.

[0044] Before maintenance, as Figure 7 shown, the first disk surface 31 of the driving disc 3 can be docked to the outer end face of the locking ring 1, and the first annular end face 411 of the receiving ring 4 can be docked to the end face of the heat exchanger cylinder body 2, and then a jack 6 is used to act on the driving arm 3a (as Figure 5 、 6 shown) or a hydraulic wrench is used to act on the transmission component 30 of the driving disc 3 (asFigure 4 as shown in FIG. ) or in combination with both to loosen the locking ring 1. After the locking ring 1 is loosened, a hydraulic wrench is applied to the transmission component 30 of the transmission disk 3, so that the transmission disk 3 drives the locking ring 1 to rotate circumferentially together, and the locking ring 1 rotates outwards relative to the cylinder body 2 and disengages from the cylinder body 2. At this time, as Figure 8 shown in FIG., the ring wall 41 of the receiving ring 4 is located outside the locking ring 1 and can receive the locking ring 1. After the receiving ring 4 is disengaged from the cylinder body 2, the receiving ring 4 carrying the locking ring 1 can be placed on the supporting part of the support seat 5 by means of hoisting or the like. Then, the thread on the locking ring 1 can be repaired through the inspection opening 410 on the receiving ring 4. For details, please refer to Figure 9 ; If it is necessary to adjust the inspection part, the locking ring 1 can be rotated. At this time, the roller shaft 42 can protect and support the entire locking ring 1.

[0045] After the inspection is completed, the receiving ring 4 carrying the locking ring 1 can be moved to the port of the heat exchanger cylinder body 2 by means of hoisting or the like. The first annular end face 411 of the receiving ring 4 is butted against the end face of the heat exchanger cylinder body 2, and then a hydraulic wrench is applied to the transmission component 30 of the transmission disk 3, so that the transmission disk 3 drives the locking ring 1 to rotate circumferentially together, and the locking ring 1 rotates inwards relative to the cylinder body 2 and is threadedly connected into the port of the cylinder body 2, which is convenient for operation.

Claims

1. An overhaul tooling for a locking ring in a threaded locking ring heat exchanger, wherein the locking ring (1) is threadedly connected inside the port of a heat exchanger cylinder body (2), and is characterized in that The maintenance tooling includes: A transmission disc (3) is provided with a transmission component (30) on which an external power member (300) applies force so that the transmission disc (3) can rotate around its own central axis; and the transmission disc (3) has a first disc surface (31) for docking with the outer end surface of the locking ring (1) so that the transmission disc (3) can drive the locking ring (1) to rotate coaxially. The receiving ring (4) has an annular wall (41) which is circumferentially sleeved on the outer periphery of the transmission disc (3) and is opposite to the edge of the transmission disc (3), and the annular wall (41) has a first annular end surface (411) for docking with the end surface of the cylinder (2) where the locking ring (1) is located, so that the annular wall (41) can be fixed relative to the cylinder (2); and the axial depth of the annular wall (41) matches the axial thickness of the locking ring (1), so that when the transmission disc (3) and the locking ring (1) are rotated outward relative to the cylinder (2) and separated from the cylinder (2), the annular wall (41) can receive the locking ring (1); and an inspection port (410) which penetrates the wall thickness is opened at a position corresponding to the locking ring (1) on the annular wall (41); The support seat (5) has a supporting portion for the annular wall (41) of the receiving ring (4) separated from the cylinder (2) to be vertically supported thereon, and the inspection port (410) is exposed.

2. The overhaul tooling according to claim 1, wherein: The portion of the annular wall (41) used for supporting the locking ring (1) upward is hollowed out, and at least two rollers (42) are provided at intervals along the circumferential direction. Each roller (42) extends axially along the annular wall (41) and is constrained to the annular wall (41) in a manner that allows it to rotate around its own central axis, so that the locking ring (1) located in the annular wall (41) can rotate circumferentially on each roller (42) under the action of an external force.

3. The maintenance tooling according to claim 1, wherein: The annular wall (41) is C-shaped, with the C-shaped opening facing upward and serving as the above-mentioned inspection port (410); The invention also includes an upwardly arched annular cover plate (44), one end of which is rotatably connected to the edge of the C-shaped opening of the annular wall (41), and the rotation axis extends along the axial direction of the annular wall (41), so that the annular cover plate (44) can be turned up and down relative to the annular wall (41) to open or close the C-shaped opening, and when the C-shaped opening is closed, the annular cover plate (44) and the annular wall (41) form a closed loop.

4. The maintenance tooling according to claim 3, characterized in that: The transmission disc (3) is arranged to be able to be separated from the receiving ring (4) through the C-shaped opening.

5. The maintenance tooling according to claim 1, characterized in that: The transmission disc (3) has a plurality of transmission arms (3a) radially arranged with the central area of the transmission disc (3) as the center, and the surface on one side of each transmission arm (3a) as a whole constitutes a first disc surface (31) of the transmission disc (3).

6. The overhaul tooling according to claim 5, characterized in that: The transmission disc (3) is in a cross shape.

7. The maintenance tooling according to claim 5, characterized in that: The outer end of each transmission arm (3a) is provided with a connection hole (32) adapted to the first threaded hole (11) on the outer end surface of the corresponding locking ring (1), so that the transmission arm (3a) and the locking ring (1) can be connected via a first screw.

8. The overhaul tooling according to claim 1, characterized in that: A transmission shaft extending axially outward is provided at the center of the second disk surface of the transmission disk (3) as the transmission component (30); On the side of the annular wall (41) facing away from the first annular end face (411), an end plate (43) is provided, and a support groove (430) for supporting the transmission shaft is provided on the end plate (43) at a position corresponding to the transmission shaft.

9. The maintenance tooling according to any one of claims 1 to 8, characterized in that: A plurality of mounting holes (412) are circumferentially spaced on the first annular end face (411) of the annular wall (41) to correspond to the second threaded holes on the end face of the cylinder body (2) so that the annular wall (41) and the end face of the cylinder body (2) can be connected by second screws.

10. The overhaul tooling according to any one of claims 1 to 8, characterized in that: The support seat (5) has a bottom plate (51) and lateral vertical plates (52) arranged oppositely on both sides of the bottom plate (51). The two lateral vertical plates (52) and the bottom plate (51) together define an upwardly open groove as the above-mentioned support portion, and the upper edges of the lateral vertical plates (52) are arc-shaped edges that are recessed downward; When the receiving ring (4) is supported on the groove, the receiving ring (4) is located between the two lateral vertical plates (52) and supported on the bottom plate (51).

Images