Large cactus pipe connecting tool capable of improving stability and dimensional precision

Abstract

The large cactus pipe connecting tool comprises a base, a limiting groove is formed in the upper portion of the base, a lead screw is connected to the inner side of the limiting groove through a bearing, and a butt joint mechanism used for adjusting and aligning a large cactus pipe connector and a main pipe connector is arranged above the limiting groove. A first sliding groove and a second sliding groove are formed in the upper portion of the base, the first sliding groove and the second sliding groove communicate with each other, and pipe connectors of the cactus B and the cactus C can be adjusted to be aligned with a pipe connector of the pipe A through the second sliding groove. By means of the butt-joint mechanism and an inverted installation mode, the cactus B and the cactus C can be fully automatically abutted against pipe connectors on the two sides of the pipe A through the butt-joint mechanism, the cactus B and the cactus C do not need to be manually suspended and abutted by using a crane, the stability and the precision of whole cactus tailor-welding are improved, the welding efficiency is also improved, and the labor intensity of workers is reduced. And meanwhile, the safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of large equipment assembly welding, in particular to a large cactus pipe connection tooling with improved stability and dimensional accuracy. Background Art

[0002] With the development trend of large-scale construction of domestic equipment, the large-scale pressure vessel equipment is also developing rapidly. At the same time, in recent years, the traditional propylene production technology has reached a bottleneck due to the restriction of low propylene yield and cannot meet the growing domestic demand for propylene. New technologies such as propane dehydrogenation using the world's advanced Lummus process have become an important means of current propylene production. As the core equipment of the propane dehydrogenation unit, the quality and installation accuracy of the reactor (propane dehydrogenation reactor) are directly related to whether the unit can operate normally; In a full cycle (about 20 minutes), the Lummus process requires hydrocarbon steam dehydrogenation. The reactor is cleaned with steam, purged with air, the catalyst is preheated, and a small amount of coke deposited on the catalyst is burned off. Then, vacuum is drawn, propane enters, dehydrogenation reaction occurs, and recovery begins to start another cycle. Due to the short reaction cycle and high frequency, thermal shock will occur during the reaction process. The pipe connection structure is complex and belongs to special-shaped parts. At the same time, it is necessary to ensure that the bottom plate of the support leg and the flange surface of the three large pipe connections are kept level. Therefore, this process requires extremely high manufacturing precision of the reactor equipment. During the equipment manufacturing process, Figure 7 As shown in the figure, since the ABC pipe connection of the equipment has an extension height of 8.25 meters, and the EH and F pipe connections have an extension height of 4.6 meters, if the traditional vertical installation pipe connection method is adopted, a basic platform needs to be made to raise the roller frame by more than 5.1 meters. This not only requires a large amount of tooling material costs, but also the height of the ABC pipe connection will reach about 17 meters when it is installed in this case, which will greatly reduce the installation efficiency, and bring great difficulties to the measurement, and there are great safety hazards during the construction process; because the BC cactus pipe fittings are large and heavy, it is difficult to adjust the BC pipe interface to the A pipe interface during the pipe interface welding process. Therefore, from the perspectives of construction period, tooling cost investment, safety, etc., the project department abandoned the traditional vertical installation pipe connection method and adopted the inverted horizontal position installation pipe connection; therefore, it is necessary to provide a large cactus pipe connection tooling that improves stability and dimensional accuracy to solve the above technical problems. Summary of the invention

[0003] The purpose of the present invention is to provide a large-scale cactus pipe connection tooling with improved stability and dimensional accuracy, so as to solve the problems of low efficiency, low dimensional accuracy and difficult detection of existing large-scale cactus welding proposed in the above background technology. The technical solution of the present invention is aimed at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a large cactus pipe connection tooling with improved stability and dimensional accuracy, comprising a base, a limiting groove being provided above the base, and a screw rod being connected to the inner bearing of the limiting groove, and a docking mechanism being provided above the limiting groove for adjusting and aligning the large cactus pipe interface with the main pipe interface.

[0005] In a further embodiment, a first slide groove and a second slide groove are provided above the base, and the first slide groove is arc-shaped, and the first slide groove and the second slide groove are connected to each other. The above structure is arranged so that the sliding of the support rod can be limited by the first slide groove, and the tube interfaces of the B cactus and C cactus can be adjusted and aligned with the tube interface of the A tube through the second slide groove.

[0006] In a further embodiment, the docking mechanism includes a sliding block arranged on the inner side of the limit groove, and a limiting block is sleeved on the inner side above the limit groove, a movable block is connected to the outer side of the limiting block, and a ball is rollingly connected to the bottom of the movable block, a connecting arm is installed on the outer side of the limiting block, and a support rod is provided at one end of the connecting arm, and a clamping block is installed on the upper end of the support rod. The arrangement of the above structure can automatically align the B cactus and the C cactus with the tube interfaces on both sides of the A tube through the docking mechanism.

[0007] In a further embodiment, the limiting groove and the slider form a sliding structure. The above structure can effectively limit the sliding of the slider when it slides left and right through the limiting groove.

[0008] In a further embodiment, the upper portion of the limiting block is convex in shape. With the arrangement of the above structure, the limiting block can effectively support the B cactus and the C cactus in an inverted manner.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a first slide groove, a second slide groove and a docking mechanism. By aligning the center line between the two parallel second slide grooves with the vertical center line of the A tube interface, the force of manually pulling the support rod can effectively drive the connecting arm, the clamping block and the limiting block to slide around the slider and cooperate with the first slide groove in an arc shape, thereby driving the B cactus and the C cactus placed above the clamping block to rotate around the limiting block, and then effectively aligning the rollers corresponding to the bottom of the two support rods with the second slide groove respectively. Compared with the existing technology, by adjusting the B cactus and the C cactus in the above manner, the B cactus and the C cactus tube interfaces can be effectively adjusted and aligned with the interfaces on both sides of the A tube; 2. The present invention is provided with a docking mechanism, which utilizes the rotation of the screw rod to effectively drive the corresponding slider, limiting block, movable block, ball, connecting arm, support rod and clamping block to move simultaneously, thereby driving the B cactus and C cactus supported on the clamping block to move to both sides of the A tube at the same time, until the B cactus and C cactus are close to the pipe interfaces on both sides of the A tube. Compared with the existing technology, the inverted installation method is adopted, and the B cactus and C cactus can be automatically close to the pipe interfaces on both sides of the A tube through the docking mechanism, without the need to manually use a crane to suspend the B cactus and C cactus close together, which not only improves the stability and accuracy of the entire cactus welding, but also improves the welding efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic structural diagram of a preferred embodiment of a large-scale cactus pipe connection tooling with improved stability and dimensional accuracy provided by the present invention; Figure 2 for Figure 1 The main cross-sectional structure diagram shown; Figure 3 for Figure 2 The enlarged structural diagram of point A shown; Figure 4 for Figure 2 The enlarged structural diagram of point B shown; Figure 5 for Figure 2 The schematic diagram of the installation structure of the screw rod and the slider is shown; Figure 6 This is a schematic diagram of the formation of a large cactus; Figure 7 Schematic diagram of background technology analysis.

[0011] In the figure: 1, base; 101, first slide groove; 102, second slide groove; 2, limit groove; 3, screw rod; 4, docking mechanism; 401, slider; 402, limit block; 403, movable block; 403a, ball bearing; 404, connecting arm; 405, support rod; 406, clamping block. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] See also Figure 1-6An embodiment of the present invention is a large-scale cactus pipe connection tooling with improved stability and dimensional accuracy, comprising a base 1, a limiting groove 2 is provided above the base 1, and a screw rod 3 is connected to the inner bearing of the limiting groove 2, and a docking mechanism 4 for adjusting and aligning the large cactus pipe interface with the main pipe interface is provided above the limiting groove 2.

[0014] Example 1: Figure 1-Figure 4 , a first slide groove 101 and a second slide groove 102 are provided on the top of the base 1, and the first slide groove 101 is in an arc shape, the first slide groove 101 and the second slide groove 102 are connected to each other, the docking mechanism 4 includes a slider 401 arranged on the inner side of the limit groove 2, and a limiting block 402 is sleeved on the inner side above the limit groove 2, a movable block 403 is connected to the outer side of the limit block 402, and a ball 403a is rollingly connected to the bottom of the movable block 403, a connecting arm 404 is installed on the outer side of the limit block 402, and a support rod 405 is provided at one end of the connecting arm 404, and a clamping block 406 is installed on the upper end of the support rod 405, the limit groove 2 and the slider 401 constitute a sliding structure, and the upper side of the limit block 402 is convex; First, insert the A tube of the device upside down on the center flange on the base 1 through a crane, adjust the vertical center lines of the pipe interfaces on both sides to the horizontal center line of the base 1, and then insert the B cactus and the C cactus respectively on the top of the limiting block 402 through a crane, and support the B cactus and the C cactus through two support rods 405 and two clamping blocks 406. Since the pipe interfaces of the B cactus and the C cactus on both sides of the A tube are in a deviated state, in order to align the B cactus and the C cactus with the interfaces on both sides of the A tube, it is necessary to adjust the angles of the B cactus and the C cactus. The specific adjustment method is as follows: The center line between the two parallel second slide grooves 102 is aligned with the vertical center line of the A tube interface. By manually pulling the support rod 405, since the support rod 405 and the connecting arm 404 are connected to the limiting block 402, when the support rod 405 is pulled, the connecting arm 404, the clamping block 406 and the limiting block 402 will be driven to slide around the slider 401 and cooperate with the first slide groove 101 to slide in an arc, thereby driving the B cactus placed above the clamping block 406 to rotate around the limiting block 402 until the rollers corresponding to the bottom of the two support rods 405 are aligned with the second slide groove 102 respectively, and the C cactus on the right side is also adjusted in angle according to the adjustment method of the B cactus. By adjusting the B cactus and the C cactus in the above manner, the B cactus and the C cactus tube interfaces can be effectively adjusted and aligned with the interfaces on both sides of the A tube; Example 2: Please refer to Figure 2 and Figure 5-6, which is different from Example 1, is that the docking mechanism 4 includes a slider 401 arranged on the inner side of the limit groove 2, and a limit block 402 is sleeved on the inner side above the limit groove 2, a movable block 403 is connected to the outer side of the limit block 402, and a ball 403a is rollingly connected to the bottom of the movable block 403, a connecting arm 404 is installed on the outer side of the limit block 402, and a support rod 405 is provided at one end of the connecting arm 404, and a clamping block 406 is installed on the upper end of the support rod 405, the limit groove 2 and the slider 401 constitute a sliding structure, and the upper side of the limit block 402 is convex; The servo motors on the left and right sides of the start base 1 drive the screw rod 3 to rotate, and the rotation of the screw rod 3 drives the corresponding slider 401, the limit block 402, the movable block 403, the ball 403a, the connecting arm 404, the support rod 405 and the clamping block 406 to move simultaneously, thereby driving the B cactus and the C cactus supported on the upper side of the clamping block 406 to move to both sides of the A tube at the same time, until the B cactus and the C cactus are close to the tube interfaces on both sides of the A tube, and then check whether the installation dimensions of the B cactus and the C cactus are qualified. After the forming dimensions are tested to be qualified, the solder resist is finally performed.

[0015] Working principle: Figure 1-2 As shown, first, insert the A tube of the device upside down on the center flange on the base 1 through a crane, adjust the vertical center lines of the pipe interfaces on both sides to the horizontal center line of the base 1, and then insert the B cactus and the C cactus through a crane respectively above the limiting block 402, and support the B cactus and the C cactus through two support rods 405 and two clamping blocks 406. Since the pipe interfaces of the B cactus and the C cactus on both sides of the A tube are in a deviated state, in order to align the B cactus and the C cactus with the docking interfaces on both sides of the A tube, it is necessary to adjust the angles of the B cactus and the C cactus. The specific adjustment method is as follows: like Figure 1-4 As shown, the center line between the two parallel second slide grooves 102 and the vertical center line of the A tube interface are aligned. By manually pulling the support rod 405, since the support rod 405 and the connecting arm 404 are connected to the limiting block 402, when the support rod 405 is pulled, the connecting arm 404, the clamping block 406 and the limiting block 402 will be driven to slide around the slider 401 and cooperate with the first slide groove 101 in an arc, thereby driving the B cactus placed above the clamping block 406 to rotate around the limiting block 402 until the rollers corresponding to the bottom of the two support rods 405 are respectively aligned with the second slide groove 102, and the C cactus on the right side is also adjusted in angle according to the adjustment method of the B cactus. By adjusting the B cactus and the C cactus in the above manner, the B cactus and the C cactus tube interfaces can be effectively adjusted and aligned with the interfaces on both sides of the A tube; like Figure 2 and Figure 5-6As shown, the servo motors on the left and right sides of the start base 1 drive the screw rod 3 to rotate, and the corresponding slider 401, the limiting block 402, the movable block 403, the ball 403a, the connecting arm 404, the support rod 405 and the clamping block 406 are driven to move simultaneously through the rotation of the screw rod 3, thereby driving the B cactus and the C cactus supported on the upper side of the clamping block 406 to move to the two sides of the A tube at the same time, until the B cactus and the C cactus are close to the tube interfaces on both sides of the A tube, and then check whether the installation dimensions of the B cactus and the C cactus are qualified. After the forming dimensions are tested to be qualified, the solder resistance is finally performed, thereby completing a series of work.

[0016] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A large-scale cactus pipe joint tooling with improved stability and dimensional accuracy, comprising a base (1), a limiting groove (2) is provided on the top of the base (1), and a screw rod (3) is connected to the inner bearing of the limiting groove (2), characterized in that: A docking mechanism (4) for adjusting and aligning the large cactus pipe interface and the main pipe interface is provided above the limiting groove (2).

2. A large-scale cactus pipe joint tooling with improved stability and dimensional accuracy according to claim 1, characterized in that: A first sliding groove (101) and a second sliding groove (102) are provided on the top of the base (1), and the first sliding groove (101) is in an arc shape.

3. A large-scale cactus pipe joint tooling with improved stability and dimensional accuracy according to claim 2, characterized in that: The first sliding groove (101) and the second sliding groove (102) are connected to each other.

4. A large-scale cactus pipe joint tool for improving stability and dimensional accuracy according to claim 1, characterized in that: The docking mechanism (4) comprises a sliding block (401) arranged on the inner side of the limiting groove (2), a limiting block (402) is sleeved on the inner side above the limiting groove (2), a movable block (403) is connected to the outer side of the limiting block (402), and a ball (403a) is rollingly connected to the bottom of the movable block (403), a connecting arm (404) is installed on the outer side of the limiting block (402), a supporting rod (405) is arranged at one end of the connecting arm (404), and a clamping block (406) is installed at the upper end of the supporting rod (405).

5. A large-scale cactus pipe joint tool for improving stability and dimensional accuracy according to claim 4, characterized in that: The limiting groove (2) and the sliding block (401) form a sliding structure.

6. A large-scale cactus pipe joint tool for improving stability and dimensional accuracy according to claim 4, characterized in that: The limiting block (402) is convex on the top.

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