Quick-opening blind plate lock ring disassembling and assembling tool

Abstract

The utility model discloses a quick-opening blind plate lock ring disassembling and assembling tool which comprises two inner supporting positioning pieces, two outer supporting positioning pieces and two outer supporting positioning pieces. The two inner supporting positioning pieces are provided with positioning faces matched with the end face of an opening of a lock ring. When the inner support positioning piece applies force to the open end face of the lock ring, the inner support positioning piece and the open end face of the lock ring are relatively fixed; the inner supporting assembly can adjust the interval length of the two ends; the two ends of the inner supporting assembly are connected with the two inner supporting positioning pieces correspondingly. The axis of a hinged shaft of the inner supporting assembly and the inner supporting positioning piece is perpendicular to the disc face of the locking ring. The relative distance between the two inner supporting positioning pieces is adjusted through the inner supporting assembly. The two external supporting positioning pieces can be respectively arranged in the positioning rings at the opening ends of the locking rings in a penetrating manner; the outer supporting assembly can adjust the interval length of the two ends; the two ends of the outer supporting assembly are connected with the two outer supporting positioning pieces correspondingly. The relative distance between the two outer supporting positioning pieces is adjusted through the outer supporting assembly. The tool can assist in dismounting an old lock ring and mounting a new lock ring, the labor intensity of replacement is reduced, and the safety of the replacement process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter type separator auxiliary maintenance tool field, concretely relates to a quick opening blind plate lock ring dismounting tool. BACKGROUND

[0002] In the natural gas production process, the filter type separator is a high-efficiency purification device for treating impurities and moisture in the filtered natural gas. When the pigging cylinder carries the pipeline pigging, the sending and receiving functions of the pig. The GD quick opening blind plate, which is the main component of the separator and the pigging cylinder, has the characteristics of safety, reliability and fast switching speed, and has been widely applied.

[0003] The lock ring is a resilient C-shaped member, and the nipple restores the lock ring to limit the lock ring, so that the lock ring can effectively form a ring-shaped seal. The lock ring structure used in the GD quick opening blind plate of the filter type separator in the natural gas field is shown in FIG. 1 、 FIG. 2 , a plurality of deformation seams are provided on the annular surface, a lock ring positioning hole is provided on the open end, and the open end of the lock ring is provided with a pointed shaped surface matched with the nipple structure. The lock ring is limitedly installed in the lock ring groove of the blind plate, and its conventional matching structure with the blind plate is shown in the technical solution of the publication No. CN103821931B, and the opening and closing operation process of the blind plate is shown in the video. https: / / www.douyin.com / video / 6931936764852456718 .

[0004] The lock ring needs to be positioned and maintained and replaced as the use time increases, so the lock ring needs to be separated from the lock ring groove and a new lock ring needs to be replaced into the lock ring groove. Although the lock ring has a certain elasticity, the old lock ring needs to be expanded in diameter so that its inner diameter is greater than the outer diameter of the lock ring groove, so that the old lock ring can be separated from the lock ring groove, which requires a large and stable expanding force on the old lock ring. In addition, when installing the new lock ring, the new lock ring also needs to be expanded in diameter, and in order to ensure that the new lock ring and the lock ring groove are not damaged, the new lock ring needs to be slowly restored to the natural state from the expanded state. However, there is no special tool to realize the above operation at present, and only the workers pry and pull the open end of the lock ring to change the size of the inner diameter of the lock ring. UTILITY MODEL CONTENTS

[0005] In view of the above defects of the prior art, the purpose of the utility model is to provide a quick opening blind plate lock ring dismounting tool, which can assist in dismounting the old lock ring and installing the new lock ring, reduce the labor intensity of replacement, improve the safety of the replacement process, and greatly reduce the damage probability of the equipment and the lock ring.

[0006] The purpose of the utility model is realized by the following technical scheme:

[0007] A quick opening blind plate lock ring dismounting tool, comprising an inner support mechanism and an outer support mechanism.

[0008] The inner support mechanism comprises:

[0009] Two inner support positioning members are provided with positioning surfaces matched with the open end surface of the lock ring; when the inner support positioning members apply force to the open end surface of the lock ring, the inner support positioning members are fixed relative to the open end surface of the lock ring;

[0010] An inner support assembly is provided to adjust the interval length between the two ends; the two ends of the inner support assembly are connected with the two inner support positioning members respectively; the axis of the hinge shaft of the inner support assembly and the inner support positioning member is perpendicular to the disc surface of the lock ring; the relative distance between the two inner support positioning members is adjusted by the inner support assembly;

[0011] The outer support mechanism comprises:

[0012] Two outer support positioning members are respectively provided in the positioning ring of the open end of the lock ring;

[0013] An outer support assembly is provided to adjust the interval length between the two ends; the two ends of the outer support assembly are connected with the two outer support positioning members respectively; the relative distance between the two outer support positioning members is adjusted by the outer support assembly.

[0014] Further, the inner support positioning member comprises an inner buckle plate and an outer buckle plate connected with each other; the inner side surface of the inner buckle plate is matched with the inner inclined surface of the open end of the lock ring; the inner side surface of the outer buckle plate is matched with the outer inclined surface of the open end of the lock ring; the inner support assembly is connected with the inner buckle plate or the connection between the inner buckle plate and the outer buckle plate.

[0015] Further, the inner support positioning member further comprises:

[0016] An outer inclined plate is connected with the outer buckle plate, and the inner side surface thereof is matched with the large inclined surface of the open end of the lock ring; the outer inclined plate, the outer buckle, and the inner buckle plate are sequentially connected to form a C-shaped structure;

[0017] A locking plate is in L-shaped structure, the head end of which is inserted into the deformation seam adjacent to the outer inclined plate on the lock ring, and the tail end thereof is buckled on the outer surface of the outer inclined plate to limit the movement of the outer inclined plate to the outside of the lock ring.

[0018] Further, the two ends of the inner support assembly are respectively hinged with the two inner support positioning members, and the axis of the hinge shaft is perpendicular to the disc surface of the lock ring; the hinge position does not exceed the vertex of the inner inclined surface of the open end of the lock ring;

[0019] Further, the inner support assembly comprises:

[0020] Two inner support rods; the head end of the inner support rod is hinged with the inner support positioning member, and the axis of the hinge shaft is perpendicular to the disc surface of the lock ring; the tail end of the inner support rod is provided with a thread; the thread directions of the two inner support rods are opposite;

[0021] The inner sleeve ring is annular, and both ends are provided with screw holes with internal threads matched with tail ends of the two inner support rods; when the two inner support rods are respectively threadedly connected in the two screw holes of the inner sleeve ring, the relative position of head ends of the two inner support rods is changed by screwing the inner sleeve ring.

[0022] Further, the inner support rod comprises:

[0023] The head rod is hingedly connected with the inner support positioning member at the head end;

[0024] The tail rod is fixedly connected with the tail end of the head rod at the head end, and the tail rod is provided with threads; the inner threads are connected in the screw holes of the inner sleeve ring; the head rod and the tail rod are arranged at an angle; the two inner support rods and the outer contour of the inner sleeve ring are C-shaped, and the opening points to the center of the lock ring.

[0025] Further, the outer support positioning member comprises:

[0026] The two insertion rods are respectively inserted through the two positioning holes of the lock ring; the insertion rods are connected with the outer support assembly.

[0027] Further, both ends of the insertion rod are respectively provided with threads; the outer support positioning member further comprises two nuts respectively sleeved on both ends of the insertion rod; and the connecting part of the outer support assembly and the insertion rod is located between the two nuts.

[0028] Further, the outer support assembly comprises:

[0029] The two outer support rods are hingedly connected with the insertion rod at the head end, and the axis of the hinge shaft is perpendicular to the disc surface of the lock ring; the tail end of the outer support rod is provided with threads; the thread directions of the two outer support rods are opposite;

[0030] The outer sleeve ring is annular, and both ends are provided with screw holes with internal threads matched with tail ends of the two outer support rods; when the two outer support rods are respectively threadedly connected in the two screw holes of the outer sleeve ring, the relative position of head ends of the two outer support rods is changed by screwing the outer sleeve ring.

[0031] Further, the head end of the outer support rod is C-shaped, and the two wings are provided with through holes matched with the insertion rod.

[0032] Due to the adoption of the above technical scheme, the utility model has the following advantages:

[0033] 1. The internal support mechanism can slightly control the deformation (expansion or reduction) of the lock ring. When removing the old lock ring, it can be slowly expanded, allowing the positioning hole of the old lock ring to be exposed from the lock ring groove, thus providing conditions for installing the external support mechanism. After the new lock ring is installed in the lock ring groove, it provides conditions for smooth removal of the external support mechanism; that is, during removal, the positioning hole of the new lock ring remains exposed outside the lock ring groove. Simultaneously, when the lock ring is finally fully installed in the lock ring groove, it ensures that the lock ring slowly returns to its shape, rather than suddenly releasing the external force and causing the elasticity to recover, resulting in a relative impact between the lock ring and the lock ring groove.

[0034] 2. The external support mechanism can expand the lock ring to a sufficient diameter, facilitating the removal or insertion of new or old lock rings from the lock ring groove. The expansion degree of the lock ring is stable and reliable throughout the process. Compared to using other tools to pry open the lock ring, there is no need to worry about the lock ring resetting under its elastic force and injuring nearby workers.

[0035] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0036] The accompanying drawings of this utility model are described below:

[0037] FIG. 1 This is a front view schematic diagram of the quick-opening blind flange locking ring.

[0038] FIG. 2 for FIG. 1 Enlarged structural diagram at point A in the middle.

[0039] FIG. 3 This is a front view structural diagram of the internal support mechanism in Embodiment 1.

[0040] FIG. 4 This is a schematic diagram of the internal support mechanism installed on the locking ring in Embodiment 1.

[0041] FIG. 5 Enlarged structural diagram at point B.

[0042] FIG. 6 for FIG. 5 A top-view structural diagram.

[0043] FIG. 7 This is a front view structural diagram of the internal support mechanism in Embodiment 2.

[0044] FIG. 8 This is a schematic diagram of the internal support mechanism installed on the locking ring in Embodiment 2.

[0045] FIG. 9Enlarged structural schematic view at C.

[0046] FIG. 10 is a top structural schematic view. FIG. 9

[0047] FIG. 11 is a front structural schematic view of the external support mechanism in Embodiments 1 and 2.

[0048] FIG. 12 is a structural schematic view of the external support mechanism in Embodiments 1 and 2 being mounted to the lock ring.

[0049] FIG. 13 Enlarged structural schematic view at D.

[0050] FIG. 14 is a top structural schematic view. FIG. 13

[0051] In the figure: 11. inner buckle plate; 12. outer buckle plate; 13. outer inclined plate; 14. locking plate; 211. head rod; 212. tail rod; 22. inner sleeve ring; 31. insertion rod; 32. nut; 41. external support rod; 42. outer sleeve ring; 100. lock ring; 101. positioning hole; 102. deformation seam; 103. inner inclined surface; 104. outer inclined surface; 105. large inclined surface. DETAILED DESCRIPTION

[0052] The utility model will be further described below in combination with the drawings and embodiments.

[0053] Embodiment 1:

[0054] As shown in FIGS. 3-6 , FIGS. 11-14 , a quick-opening blind plate lock ring 100 dismounting tool comprises an internal support mechanism and an external support mechanism;

[0055] The internal support mechanism comprises:

[0056] Two internal support positioning members are provided with positioning surfaces matched with the open end surface of the lock ring 100; when the internal support positioning members apply force to the open end surface of the lock ring 100, the internal support positioning members are fixed relative to the open end surface of the lock ring 100;

[0057] An internal support assembly is provided, which can adjust the interval length between two ends; the two ends of the internal support assembly are connected with the two internal support positioning members respectively; the axis of the hinged shaft of the internal support assembly and the internal support positioning member is perpendicular to the disc surface of the lock ring 100; the relative distance between the two internal support positioning members is adjusted through the internal support assembly;

[0058] The external support mechanism comprises:

[0059] Two external support positioning members can be respectively arranged in the positioning rings of the open end of the lock ring 100; ​​

[0060] The outer support assembly is adjustable in length between two ends; the two ends of the outer support assembly are connected with two outer support positioning members respectively; the two outer support positioning members are adjusted in relative distance by the outer support assembly.

[0061] In the embodiment, the inner support positioning member comprises an inner buckle plate 11 and an outer buckle plate 12 connected with each other; the inner side surface of the inner buckle plate 11 is attached to the inner inclined surface 103 of the open end of the lock ring 100; the inner side surface of the outer buckle plate 12 is attached to the outer inclined surface 104 of the open end of the lock ring 100; the inner support assembly is connected at the connection between the inner buckle plate 11 or the outer buckle plate 12.

[0062] The inner buckle plate 11 and the outer buckle plate 12 form a V-shaped structure, which can ensure that the inner buckle plate 11 and the outer buckle plate 12 do not fall off from the lock ring 100 to a certain extent when the open end of the lock ring 100 is pressed from opposite sides. In addition, a slip-resistant layer can be applied to the inner side surfaces of the inner buckle plate 11 and the outer buckle plate 12, or a gasket that increases friction can be directly provided.

[0063] In the embodiment, the two ends of the inner support assembly are respectively hinged to two inner support positioning members, and the axis of the hinge shaft is perpendicular to the disc surface of the lock ring 100; the hinge position is not higher than the vertex of the inner inclined surface 103 of the open end of the lock ring 100.

[0064] Limiting the position of the joint point below the vertex of the inner inclined surface 103 can, as much as possible, avoid the inner buckle plate 11 and the outer buckle plate 12 from sliding with the open end of the lock ring 100 when the open end of the lock ring 100 is expanded.

[0065] In the embodiment, the inner support assembly comprises:

[0066] Two inner support rods; the head end of the inner support rod is hinged to the inner support positioning member, and the axis of the hinge shaft is perpendicular to the disc surface of the lock ring 100; the tail end of the inner support rod is provided with a screw thread; the screw thread directions of the two inner support rods are opposite;

[0067] An inner sleeve ring 22 in the shape of a ring, both ends of which are provided with screw holes with internal threads matched with the tail ends of the two inner support rods; when the two inner support rods are respectively screwed into the two screw holes of the inner sleeve ring 22, the relative positions of the head ends of the two inner support rods are changed by screwing the inner sleeve ring 22.

[0068] In the embodiment, the inner support rod comprises:

[0069] A head rod 211, the head end of which is hinged to the inner support positioning member;

[0070] Tail rod 212, head end fixed with tail end of head rod 211; the tail rod 212 is provided with a screw thread, and the internal thread is connected in the screw hole of the inner sleeve ring 22; the head rod 211 and the tail rod 212 are arranged at an angle; two inner support rods are C-shaped with the outer contour of the inner sleeve ring 22, and the opening points to the center of the lock ring 100.

[0071] In order to avoid the interference between the rotating inner sleeve ring 22 and the bottom of the lock ring groove when disassembling the old lock ring 100, and control the interference between the rotating inner sleeve ring 22 and the bottom of the lock ring groove when the new lock ring 100 is restored during installation, the head rod 211 and the tail rod 212 are arranged at an angle.

[0072] In this embodiment, the outer support positioning member includes:

[0073] Two insertion rods 31 pass through two positioning holes 101 of the lock ring 100 respectively; the insertion rod 31 is connected with the outer support assembly.

[0074] The outer support assembly can be in the form of a sleeve ring structure and is sleeved with one end or both ends of the insertion rod 31.

[0075] In this embodiment, both ends of the insertion rod 31 are provided with threads; the outer support positioning member further includes two nuts 32, which are respectively sleeved on both ends of the insertion rod 31; the connection part of the outer support assembly and the insertion rod 31 is located between the two nuts 32.

[0076] The insertion rod 31 can be limited by the nut 32 and the lock ring 100, so as to avoid the disconnection of the insertion rod 31 and the lock ring 100, and the outer support assembly can be limited, avoiding the disconnection of the outer support assembly and the insertion rod 31.

[0077] In this embodiment, the outer support assembly includes:

[0078] Two outer support rods 41; the head end of the outer support rod 41 is hinged with the insertion rod 31, the axis of the hinge shaft is perpendicular to the disc surface of the lock ring 100, and the tail end of the outer support rod 41 is provided with a screw thread; the screw thread directions of the two outer support rods 41 are opposite;

[0079] The outer sleeve ring 42 is annular, and both ends are provided with screw holes with internal threads matched with the tail ends of the two outer support rods 41; when the two outer support rods 41 are respectively threadedly connected in the two screw holes of the outer sleeve ring 42, the relative position of the head ends of the two outer support rods 41 is changed by screwing the outer sleeve ring 42.

[0080] The head end of the outer support rod 41 is C-shaped, and the two wings are provided with through holes matched with the insertion rod 31.

[0081] The quick-opening blind plate lock ring 100 dismounting tool in this embodiment is used as follows:

[0082] When dismounting the old lock ring 100, the head rod 211 and the tail rod 212 are arranged at an angle, the two inner support rods are C-shaped with the outer contour of the inner sleeve ring 22, and the opening points to the center of the lock ring 100. FIG. 3The inner support structure is installed to the two ends of the old lock ring 100, and then the inner sleeve ring 22 is rotated to make the two inner support rods relatively far away, forcing the opening of the old lock ring 100 to expand, and the inner diameter of the old lock ring 100 to increase. When the inner diameter of the old lock ring 100 increases to a certain extent, the positioning hole 101 on the old lock ring 100 is exposed outside the side wall of the lock ring groove. At this time, the FIG. 11 The outer support mechanism is installed on the old lock ring 100, and the outer sleeve ring 42 is twisted to continuously expand the old lock ring 100, and in this process, as the inner diameter of the old lock ring 100 increases, the inner support mechanism is naturally separated from the old lock ring 100. Continue to twist the outer sleeve ring 42 until the inner diameter of the old lock ring 100 is completely larger than the lock ring groove, at which time the old lock ring 100 can be directly taken out.

[0083] When installing the new and old lock ring 100, first use the outer support mechanism to expand the inner diameter of the new lock ring 100 to the position where it can be smoothly sleeved into the lock ring groove. Then control the inner diameter of the new lock ring 100 to shrink (reverse the rotation of the outer sleeve ring 42, and the inner diameter of the lock ring 100 shrinks under the restoring force of its own elastic deformation), until the inner diameter of the new lock ring 100 is about to interfere with the side wall of the lock ring groove, install the inner support mechanism to the opening of the new lock ring 100, and then control the inner support structure to moderately control the expansion of the new lock ring 100, so as to facilitate the disassembly of the outer support mechanism, and then disassemble the outer support mechanism.

[0084] Finally, control the inner diameter of the new lock ring 100 to slowly recover through the inner support mechanism until the lock ring 100 returns to the natural state or fits the lock ring groove, and then continue to rotate the inner sleeve ring 22 until the inner support positioning member can be smoothly taken out.

[0085] In this way, the disassembly of the old lock ring 100 and the installation of the new lock ring 100 are completed.

[0086] Example 2:

[0087] As shown in the drawings, a quick-opening blind plate lock ring 100 dismounting tool includes an inner support mechanism and an outer support mechanism. FIGS. 7-14

[0088] The inner support mechanism includes:

[0089] Two inner support positioning members are provided with positioning surfaces matched with the opening end surface of the lock ring 100; when the inner support positioning member applies force to the opening end surface of the lock ring 100, the inner support positioning member is fixed relative to the opening end surface of the lock ring 100;

[0090] The inner support assembly can adjust the interval length between the two ends; the two ends of the inner support assembly are respectively connected with the two inner support positioning members; the axis of the hinge shaft of the inner support assembly and the inner support positioning member is perpendicular to the disc surface of the lock ring 100; the relative distance between the two inner support positioning members is adjusted through the inner support assembly.

[0091] The outer support mechanism includes: ​

[0092] Two outer support positioning members can be respectively arranged in the positioning ring at the open end of the lock ring 100.

[0093] The outer support assembly can adjust the interval length between the two ends. The two ends of the outer support assembly are connected with the two outer support positioning members respectively. The relative distance of the two outer support positioning members is adjusted by the outer support assembly.

[0094] In the embodiment, the inner support positioning member includes an inner buckle plate 11 and an outer buckle plate 12 connected with each other. The inner side surface of the inner buckle plate 11 is attached to the inner inclined surface 103 at the open end of the lock ring 100. The inner side surface of the outer buckle plate 12 is attached to the outer inclined surface 104 at the open end of the lock ring 100. The inner support assembly is connected at the connection between the inner buckle plate 11 and the outer buckle plate 12.

[0095] The inner buckle plate 11 and the outer buckle plate 12 form a V-shaped structure, which can ensure that the inner buckle plate 11 and the outer buckle plate 12 do not fall off from the lock ring 100 to a certain extent when the open end of the lock ring 100 is pressed. In addition, a slip-resistant layer can be applied to the inner side surfaces of the inner buckle plate 11 and the outer buckle plate 12, or a gasket that increases friction can be directly arranged.

[0096] In the embodiment, the inner support positioning member further includes:

[0097] The outer inclined plate 13 is connected with the outer buckle plate 12, and the inner side surface thereof is attached to the large inclined surface 105 at the open end of the lock ring 100. The outer inclined plate 13, the outer buckle, and the inner buckle plate 11 are connected in sequence to form a C-shaped structure.

[0098] The lock positioning plate 14 is in an L shape, the head end thereof is inserted into the deformation seam 102 adjacent to the outer inclined plate 13 at the lock ring 100, and the tail end thereof is buckled on the outer surface of the outer inclined plate 13 to limit the movement of the outer inclined plate 13 to the outside of the lock ring 100.

[0099] The outer inclined plate 13 and the lock positioning plate 14 can limit the sliding of the inner buckle plate 11 and the outer buckle plate 12 when the inner buckle plate 11 and the outer buckle plate 12 slide relative to the open end of the lock ring 100 (i.e., cannot be effectively limited relative to the open end of the lock ring 100), thereby fixing the inner buckle plate 11 and the outer buckle plate 12 relative to the lock ring 100 again, so that the inner support assembly can smoothly expand the opening. The lock positioning plate 14 is connected with the lock ring 100 in an insertion manner. If it is necessary to avoid damage to the lock ring 100 caused by relative extrusion, the lock positioning plate 14 can be made of engineering plastic or an elastic deformation layer can be applied to the surface of the lock positioning plate 14.

[0100] In the embodiment, the two ends of the inner support assembly are respectively hinged with the two inner support positioning members. The axis of the hinge shaft is perpendicular to the disc surface of the lock ring 100. The hinge position does not exceed the vertex of the inner inclined surface 103 at the open end of the lock ring 100.

[0101] The position of the joint is limited below the vertex of the inner bevel 103, which can avoid the sliding of the inner buckle plate 11 and the outer buckle plate 12 with the opening end of the lock ring 100 as much as possible when the opening of the lock ring 100 is expanded.

[0102] In the embodiment, the inner support assembly comprises:

[0103] Two inner support rods, the head end of the inner support rod is hinged with the inner support positioning member, the axis of the hinge shaft is perpendicular to the disc surface of the lock ring 100, and the tail end of the inner support rod is provided with a thread;

[0104] The inner sleeve ring 22 is annular, and both ends are provided with threaded holes matched with the tail ends of the two inner support rods; when the two inner support rods are respectively threaded into the two threaded holes of the inner sleeve ring 22, the relative position of the head ends of the two inner support rods is changed by screwing the inner sleeve ring 22.

[0105] In the embodiment, the inner support rod comprises:

[0106] The head rod 211 is hinged at the head end with the inner support positioning member;

[0107] The tail rod 212 is fixedly connected at the head end with the tail end of the head rod 211; the tail rod 212 is provided with a thread, and the inner thread is connected in the threaded hole of the inner sleeve ring 22; the head rod 211 and the tail rod 212 are arranged at an angle; the two inner support rods and the outer contour of the inner sleeve ring 22 form a C shape, and the opening points to the center of the lock ring 100.

[0108] In order to avoid the interference between the rotating inner sleeve ring 22 and the bottom of the lock ring groove when disassembling the old lock ring 100, and to control the interference between the rotating inner sleeve ring 22 and the bottom of the lock ring groove when the new lock ring 100 is restored during the installation of the new lock ring 100, the head rod 211 and the tail rod 212 are arranged at an angle.

[0109] In the embodiment, the outer support positioning member comprises:

[0110] Two insertion rods 31 respectively pass through the two positioning holes 101 of the lock ring 100; the insertion rod 31 is connected with the outer support assembly.

[0111] The outer support assembly can adopt a structure of a sleeve ring and is sleeved with one end or both ends of the insertion rod 31.

[0112] In the embodiment, both ends of the insertion rod 31 are respectively provided with threads; the outer support positioning member further comprises two nuts 32 respectively sleeved on both ends of the insertion rod 31; and the connection part of the outer support assembly and the insertion rod 31 is located between the two nuts 32.

[0113] Nut 32 can limit the insertion rod 31 and the locking ring 100, thereby preventing the insertion rod 31 from separating from the locking ring 100. At the same time, it can limit the external support assembly, preventing the external support assembly from separating from the insertion rod 31.

[0114] In this embodiment, the external support component includes:

[0115] Two external support rods 41; the head end of the external support rod 41 is hinged to the insertion rod 31, the axis of the hinge shaft is perpendicular to the disc surface of the locking ring 100, and the tail end of the external support rod 41 is provided with threads; the threads on the two external support rods 41 are in opposite directions.

[0116] The outer ring 42 is ring-shaped and has threaded holes at both ends that match the tail ends of the two outer support rods 41. When the two outer support rods 41 are threaded into the two threaded holes of the outer ring 42, the relative position of the head ends of the two outer support rods 41 can be changed by turning the outer ring 42.

[0117] The head end of the external support rod 41 is C-shaped, and the two wing plates are provided with through holes for matching insert rods 31.

[0118] In this embodiment, the tool for removing and installing the quick-opening blind flange locking ring 100 is used as follows:

[0119] When removing the old lock ring 100, FIG. 3 The inner support structure shown is installed at both ends of the old locking ring 100. Then, the inner collar 22 is rotated, causing the two inner support rods to move away from each other, forcing the opening of the old locking ring 100 to widen, and increasing the inner diameter of the old locking ring 100. When the inner diameter of the old locking ring 100 increases to a certain extent, the positioning hole 101 on the old locking ring 100 protrudes from the side wall of the locking ring groove. At this point, FIG. 11 The outer support mechanism shown is installed onto the old locking ring 100, and the outer ring 42 is turned so that the two insert rods 31 continue to spread the old locking ring 100. During this process, as the inner diameter of the old locking ring 100 increases, the inner support mechanism naturally disengages from the old locking ring 100. Continue to turn the outer ring 42 until the inner diameter of the old locking ring 100 is completely larger than the locking ring groove. At this point, the old locking ring 100 can be directly removed.

[0120] When installing the new and old locking rings 100, first use the outer support mechanism to enlarge the inner diameter of the new locking ring 100 to a position where it can be smoothly fitted into the locking ring groove. Then control the inner diameter of the new locking ring 100 to shrink (the outer ring 42 rotates in the opposite direction, and the inner diameter of the locking ring 100 shrinks under the restoring force of its own elastic deformation) until the insertion rod 31 is about to interfere with the side wall of the locking ring groove. Then install the inner support mechanism onto the opening of the new locking ring 100. Then control the inner support structure to moderately control the enlargement of the new locking ring 100 to facilitate the disassembly of the outer support mechanism. Then disassemble the outer support mechanism.

[0121] Finally, the inner diameter of the new lock ring 100 is slowly recovered by the inner support mechanism until the lock ring 100 returns to the natural state or fits with the lock ring groove, and then the inner sleeve ring 22 is continuously rotated until the inner support positioning member can be smoothly removed.

[0122] In this way, the old lock ring 100 is disassembled and the new lock ring 100 is installed.

[0123] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A quick-opening blind flange lock ring dismounting tool, characterized in that, The inner support mechanism and the outer support mechanism are included. The inner support mechanism includes: Two inner support positioning members are provided with positioning surfaces matched with the open end surface of the lock ring; when the inner support positioning members apply force to the open end surface of the lock ring, the inner support positioning members are fixed relative to the open end surface of the lock ring; An inner support assembly is used to adjust the interval length between two ends; the two ends of the inner support assembly are connected with the two inner support positioning members respectively; the axis of the hinge shaft of the inner support assembly and the inner support positioning members is perpendicular to the disc surface of the lock ring; the relative distance between the two inner support positioning members is adjusted by the inner support assembly. The outer support mechanism includes: Two outer support positioning members are respectively inserted into the positioning rings of the open end of the lock ring; An outer support assembly is used to adjust the interval length between two ends; the two ends of the outer support assembly are connected with the two outer support positioning members respectively; the relative distance between the two outer support positioning members is adjusted by the outer support assembly.

2. The lock ring dismounting tool of the quick-opening blind plate according to claim 1, characterized in that, The inner support positioning member includes an inner buckle plate and an outer buckle plate connected with each other; the inner side surface of the inner buckle plate is matched with the inner inclined surface of the open end of the lock ring; the inner side surface of the outer buckle plate is matched with the outer inclined surface of the open end of the lock ring; the inner support assembly is connected with the inner buckle plate or the connection between the inner buckle plate and the outer buckle plate.

3. The lock ring dismounting tool of the quick-opening blind plate according to claim 2, characterized in that, The inner support positioning member further includes: An outer inclined plate is connected with the outer buckle plate, and the inner side surface of the outer inclined plate is matched with the large inclined surface of the open end of the lock ring; the outer inclined plate, the outer buckle plate and the inner buckle plate are sequentially connected to form a C-shaped structure; A lock positioning plate is in L shape, the head end of the lock positioning plate is inserted into the deformation seam adjacent to the outer inclined plate on the lock ring, and the tail end of the lock positioning plate is buckled on the outer surface of the outer inclined plate to limit the movement of the outer inclined plate to the outside of the lock ring.

4. The lock ring disassembly tool of claim 1, wherein, The two ends of the inner support assembly are respectively hinged with the two inner support positioning members, and the axis of the hinge shaft is perpendicular to the disc surface of the lock ring; the hinge position does not exceed the vertex of the inner inclined surface of the open end of the lock ring.

5. The lock ring disassembly tool of claim 1, wherein, The inner support assembly includes: Two inner support rods; the head end of the inner support rod is hinged with the inner support positioning member, and the axis of the hinge shaft is perpendicular to the disc surface of the lock ring; the tail end of the inner support rod is provided with a thread; the thread directions of the two inner support rods are opposite; An inner sleeve ring is in ring shape, and the two ends of the inner sleeve ring are provided with threaded holes matched with the tail ends of the two inner support rods; when the two inner support rods are respectively threadedly connected in the two threaded holes of the inner sleeve ring, the relative position of the head ends of the two inner support rods is changed by screwing the inner sleeve ring.

6. The lock ring disassembly tool of claim 5, wherein, The inner support rod includes: A head rod is hinged with the inner support positioning member at the head end; A tail rod is fixedly connected with the tail end of the head rod at the head end; the tail rod is provided with a thread and is threadedly connected in the threaded hole of the inner sleeve ring; the head rod and the tail rod are arranged at an angle; the outer contour of the two inner support rods and the inner sleeve ring is in C shape, and the opening points to the center of the lock ring.

7. The lock ring disassembly tool of claim 1, wherein, The outer support positioning member includes: Two insertion rods are respectively inserted into the two positioning holes of the lock ring; the insertion rod is connected with the outer support assembly.

8. The lock ring disassembly tool of claim 7, wherein, The two ends of the insertion rod are respectively provided with threads; the outer support positioning member further includes two nuts respectively sleeved on the two ends of the insertion rod; the connection part of the outer support assembly and the insertion rod is located between the two nuts.

9. The lock ring disassembly tool of claim 7, wherein, The outer support assembly includes: Two outer support rods; the head end of the outer support rod is hinged with the insertion rod, and the axis of the hinge shaft is perpendicular to the disc surface of the lock ring; the tail end of the outer support rod is provided with a thread; the thread directions of the two outer support rods are opposite. The outer sleeve ring is annular and has two screw holes with inner threads at both ends to match the tail ends of the two outer support rods; when the two outer support rods are respectively screwed into the two screw holes of the outer sleeve ring, the outer sleeve ring is twisted to change the relative position of the head ends of the two outer support rods.

10. The lock ring disassembly tool of claim 9, wherein, The head end of the outer support rod is C-shaped, and the two wings are provided with through holes to match the insertion rod.

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