Ultrahigh pressure duplex stainless steel pipe external pressure limit test device

Abstract

The utility model relates to the technical field of steel pipe inspection, and discloses an ultrahigh pressure duplex stainless steel pipe external pressure limit test device, which comprises a bottom plate, a movable assembly and a fixed assembly, the moving assembly comprises two pairs of supporting columns which are slidably connected to the positions, close to the universal wheels, of the top of the bottom plate, the top ends of the two pairs of supporting columns are jointly and fixedly connected with a workbench, and the two sides of the outer wall of the bottom plate are fixedly connected with a pair of fixing plates. The effect that the position of the lifting device is convenient to move is achieved, a bidirectional motor and a double-end threaded rod are matched with each other, so that a pair of sliding blocks synchronously and reversely slide, then the sliding blocks are matched with a fixing block and a connecting rod, a supporting column moves downwards till the bottom end of a supporting pad abuts against the ground, and therefore the lifting device is convenient to move. The device is prevented from deviating due to external force in the inspection process, and the problem that the convenience of device position movement is difficult to effectively improve is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe inspection technical field, concretely is a kind of superhigh pressure duplex stainless steel pipe outer pressure limit test device. BACKGROUND

[0002] How much steel pipe bears external pressure must use the equipment of external pressure detection.

[0003] Through the search, the Chinese patent with disclosure number CN208334049U discloses a kind of superhigh pressure duplex stainless steel pipe outer pressure limit test device, stainless steel pipe is installed in measuring device, sealing plug a and sealing plug b are equipped at the both ends of stainless steel pipe, measuring device is fixed on mobile trolley by positioning support, the mobile trolley is fixed with hydraulic press, hydraulic press is communicated with measuring device and sealing plug b respectively by input pipe.

[0004] The device can meet the external pressure detection of various specifications of steel pipe by exchanging the sealing cover of the outer diameter of steel pipe, due to the ingenious design of sealing plug, the drawbacks that steel pipe is welded on measuring equipment are avoided, and the inner diameter of steel pipe can be quickly sealed and clamped.The structure is reasonable, easy to operate and convenient to use.

[0005] But the device still has the following problems, the measuring device is fixed on mobile trolley by positioning support, and the fixation of mobile trolley itself is relatively simple, there is the risk of position deviation of device under external force, often through external fixing component reinforcement to improve the stability of device, the reinforcement process is relatively cumbersome, and it is difficult to effectively improve the convenience of device position movement. SUMMARY

[0006] (1) technical problem solved

[0007] In view of the deficiencies of prior art, the utility model provides a kind of superhigh pressure duplex stainless steel pipe outer pressure limit test device, solves the problem that above-mentioned difficult to effectively improve the convenience of device position movement.

[0008] (2) technical scheme

[0009] To achieve the above object, the utility model provides the following technical scheme: a kind of superhigh pressure duplex stainless steel pipe outer pressure limit test device, including bottom plate, the bottom corner of bottom plate is all installed with universal wheel, still include the mobile assembly and fixed component being set to the top of bottom plate;

[0010] The moving assembly includes two pairs of support columns slidably connected to the top of the base plate near the casters. A worktable is fixedly connected to the top of both pairs of support columns. A pair of fixed plates are fixedly connected to both sides of the outer wall of the base plate. A double-threaded rod is rotatably connected to one end of each pair of fixed plates. A support base is fixedly connected to one side of the outer wall of one of the fixed plates. A bidirectional motor is fixedly connected to the top of the support base, and the output shaft of the bidirectional motor is fixedly connected to one end of the double-threaded rod. The outer peripheral wall of the double-threaded rod has a pair of threaded ends with opposite thread directions. A slider is threadedly connected to one end of each threaded end, and the bottom end of the slider is slidably connected to the top of the base plate. A pair of fixed blocks are fixedly connected to the bottom of the worktable. A connecting seat is fixedly connected to the bottom end of each fixed block and the top end of the slider. A rotating shaft is rotatably connected to one end of each connecting seat. A pair of connecting rods are rotatably connected to the outer peripheral wall of each pair of rotating shafts, and fastening bolts are threaded to both ends of each rotating shaft.

[0011] Preferably, the fixing component includes a hydraulic press fixedly connected to one side of the top of the workbench, and an inspection instrument fixedly connected to the other side of the top of the workbench, wherein the steel pipe to be tested is sealed inside the inspection instrument.

[0012] Preferably, a pair of connecting plates are fixedly connected to the outer wall of the base plate near the fixing plate, and a push rod is fixedly connected to both of the pair of connecting plates.

[0013] Preferably, the outer peripheral wall of the push rod is fixedly connected with a pair of anti-slip sleeves symmetrically distributed along the axis of the base plate.

[0014] Preferably, a support pad is fixedly connected to the bottom end of each of the support columns.

[0015] (III) Beneficial Effects

[0016] 1. This ultra-high pressure duplex stainless steel pipe external pressure limit test device, through the cooperation between a bidirectional motor and a double-headed threaded rod, enables a pair of sliders to slide synchronously in opposite directions along the top of the base plate. Then, through the cooperation between the sliders, the fixed block, and the connecting rod, the support column moves downward until the bottom of the support pad touches the ground, which improves the stability of the device in contact with the ground, avoids the device from shifting due to external forces during the test, and effectively improves the convenience of moving the device.

[0017] 2. This ultra-high pressure duplex stainless steel pipe external pressure limit test device is simple to operate and ingeniously designed. The anti-slip sleeve reduces the risk of slippage for workers when pushing the device, and the support pad increases the contact area between the device and the ground, further improving the stability of the device. Attached Figure Description

[0018] Figure 1It is the first perspective three-dimensional structure schematic view of the utility model.

[0019] Figure 2 It is the second perspective three-dimensional structure schematic view of the utility model.

[0020] Figure 3 It is the partial assembly half cut three-dimensional structure schematic view of the utility model.

[0021] Figure 4 It is Figure 3 The enlarged schematic view of A in the middle.

[0022] In the drawing: 1, bottom plate; 2, universal wheel; 3, support column; 4, workbench; 5, hydraulic press; 6, inspection instrument; 7, connecting plate; 8, push rod; 9, anti-skid sleeve; 10, support pad; 11, fixed plate; 12, support seat; 13, bidirectional motor; 14, double-headed threaded rod; 15, threaded end; 16, fixed block; 17, steel pipe to be measured; 18, sliding block; 19, connecting seat; 20, rotating shaft; 21, connecting rod; 22, fastening bolt. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Embodiment: as Figure 1 Indicated, a kind of superhigh pressure duplex stainless steel pipe external pressure limit test device, including bottom plate 1, wherein bottom plate 1 is made of high-strength aluminum alloy material forging, the structural strength of lifting device overall, the bottom corner of the bottom plate 1 is equipped with universal wheel 2, wherein universal wheel 2 plays the role of lifting device movability, still include the mobile assembly and fixed assembly being set to the top of bottom plate 1.

[0025] As Figures 2-4As shown in the figure, in an embodiment, in order to improve the convenience of the device movement, the moving assembly comprises two pairs of support columns 3 which are slidingly connected to the top of the base plate 1 near the universal wheel 2, and the top ends of the two pairs of support columns 3 are fixedly connected with a workbench 4, wherein the support column 3 plays a role in improving the stability of the movement of the workbench 4, and the outer wall of the base plate 1 is fixedly connected with a pair of fixed plates 11, one end of a pair of the fixed plates 11 is rotatably connected with a double-headed threaded rod 14, and the outer wall of one of the fixed plates 11 is fixedly connected with a support seat 12, the top end of the support seat 12 is fixedly connected with a bidirectional motor 13, and the output shaft of the bidirectional motor 13 is fixedly connected with one end of the double-headed threaded rod 14, wherein the bidirectional motor 13 drives the double-headed threaded rod 14 to rotate, the outer circumferential wall of the double-headed threaded rod 14 is provided with a pair of threaded ends 15 with opposite screw directions, one end of each threaded end 15 is threadedly connected with a sliding block 18, and the bottom end of the sliding block 18 is slidingly connected with the top of the base plate 1, through the cooperation between the bidirectional motor 13 and the double-headed threaded rod 14, a pair of sliding blocks 18 are driven to slide synchronously and oppositely along the top of the base plate 1, the bottom end of the workbench 4 is fixedly connected with a pair of fixed blocks 16, the bottom end of each fixed block 16 and the top end of the sliding block 18 are fixedly connected with a connecting seat 19, one end of each connecting seat 19 is rotatably connected with a rotating shaft 20, and the outer circumferential wall of each pair of rotating shafts 20 is rotatably connected with a pair of connecting rods 21, through the cooperation between the sliding block 18, the connecting seat 19 and the connecting rod 21, the workbench 4 drives the support column 3 to move, so as to change the contact state between the support column 3 and the ground, and the two ends of each rotating shaft 20 are threadedly connected with a fastening bolt 22, wherein the fastening bolt 22 improves the stability of the device.

[0026] As Figure 2 With Figure 3 As shown in the figure, in an embodiment, in order to further improve the convenience of the device, the fixing assembly comprises a hydraulic press 5 fixedly connected to one side of the top of the workbench 4, wherein the hydraulic press 5 plays a role in pressure testing, the other side of the top of the workbench 4 is fixedly connected with a testing instrument 6, the inside of the testing instrument 6 is sealingly provided with a steel pipe to be tested 17, the steel pipe to be tested 17 is sealingly fixed in the inside of the testing instrument 6 through the sealing kit, and the outer wall of the base plate 1 is fixedly connected with a pair of connecting plates 7 near the fixed plate 11, a pair of the connecting plates 7 are fixedly connected with a push rod 8, through the arrangement of the push rod 8, the device is facilitated to be pushed to a designated position, the outer circumferential wall of the push rod 8 is fixedly connected with a pair of anti-skid sleeves 9 which are distributed symmetrically along the axis of the base plate 1, through the arrangement of the anti-skid sleeves 9, the risk of hand slipping of the worker in the process of pushing the device is reduced, and the bottom end of each support column 3 is fixedly connected with a support pad 10, through the arrangement of the support pad 10, the contact area between the device and the ground is improved, and the stability of the device is further improved.

[0027] Working principle: in use, first, through the mutual cooperation between the push rod 8 and the universal wheel 2, the device is moved to the designated position, then the bidirectional motor 13 is started, through the mutual cooperation between the bidirectional motor 13 and the double-headed threaded rod 14, a pair of sliding blocks 18 are synchronously and reversely slid along the top of the bottom plate 1, then through the mutual cooperation between the sliding block 18 and the fixed block 16 and the connecting rod 21, the workbench 4 is driven to move downward along the support column 3, so that the support column 3 moves downward to the bottom end of the support pad 10 and abuts against the ground, the stability of the device in contact with the ground is improved, the device is prevented from deviating due to external force during the inspection process, and the convenience of the device movement is effectively improved, then the steel pipe 17 to be measured is sealed and fixed in the inspection instrument 6 through the sealing kit in the inspection instrument 6, then the hydraulic press 5 is started, the hydraulic press 5 is pressurized to the inspection instrument 6, and the external pressure test of the steel pipe 17 to be measured is completed.

[0028] In the description of the present application, it should be further explained that, unless otherwise specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for testing the external pressure limit of ultra-high pressure duplex stainless steel pipes, comprising a base plate (1), wherein casters (2) are installed at the bottom corners of the base plate (1), characterized in that: It also includes a movable component and a fixed component disposed above the base plate (1); The moving assembly includes two pairs of support columns (3) slidably connected to the top of the base plate (1) near the caster (2). The top of the two pairs of support columns (3) is fixedly connected to a worktable (4). A pair of fixing plates (11) are fixedly connected to both sides of the outer wall of the base plate (1). One end of the pair of fixing plates (11) is rotatably connected to a double-ended threaded rod (14). A support base (12) is fixedly connected to one side of the outer wall of one of the fixing plates (11). A bidirectional motor (13) is fixedly connected to the top of the support base (12), and the output shaft of the bidirectional motor (13) is fixedly connected to one end of the double-ended threaded rod (14). The outer side of the double-ended threaded rod (14) is fixedly connected to the worktable (4). The peripheral wall is provided with a pair of threaded ends (15) with opposite thread directions. Each threaded end (15) is threaded to a slider (18) at one end, and the bottom end of the slider (18) is slidably connected to the top of the base plate (1). The bottom end of the worktable (4) is fixedly connected to a pair of fixing blocks (16). The bottom end of each fixing block (16) and the top end of the slider (18) are fixedly connected to a connecting seat (19). One end of each connecting seat (19) is rotatably connected to a rotating shaft (20). The outer peripheral wall of each pair of rotating shafts (20) is rotatably connected to a pair of connecting rods (21). Both ends of each rotating shaft (20) are threadedly connected to fastening bolts (22).

2. The ultra-high pressure duplex stainless steel tube external pressure limit test device according to claim 1, characterized in that: The fixing assembly includes a hydraulic press (5) fixedly connected to one side of the top of the workbench (4), and an inspection instrument (6) fixedly connected to the other side of the top of the workbench (4). The inspection instrument (6) has a steel pipe (17) to be tested sealed inside.

3. The ultra-high pressure duplex stainless steel tube external pressure limit test device according to claim 2, characterized in that: A pair of connecting plates (7) are fixedly connected to the outer wall of the base plate (1) near the fixing plate (11), and a push rod (8) is fixedly connected to the pair of connecting plates (7).

4. The ultra-high pressure duplex stainless steel tube external pressure limit test device according to claim 3, characterized in that: The outer peripheral wall of the push rod (8) is fixedly connected with a pair of anti-slip sleeves (9) symmetrically distributed along the axis of the base plate (1).

5. The ultra-high pressure duplex stainless steel tube external pressure limit test device according to claim 4, characterized in that: Each of the support columns (3) has a support pad (10) fixedly connected to its bottom end.

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