Damage-free pipe hydraulic detection device

Abstract

The utility model relates to a nondestructive pipe hydraulic detection device which is characterized in that the nondestructive pipe hydraulic detection device comprises sealing elements, the sealing elements are respectively arranged in two ends of a pipe sample to be detected, one sealing element is connected with hydraulic pressure equipment, and the other sealing element is connected with a high-pressure valve; the O-shaped ring, the gasket, the outer taper sleeve and the inner taper sleeve are sequentially arranged on one side of the plug in a sleeving mode. A through hole in the outer taper sleeve is of a circular truncated cone structure; the inner taper sleeve comprises an inner taper sleeve body and a driving block arranged on one side of the inner taper sleeve body, the inner taper sleeve body is of a circular truncated cone structure with a through hole in the middle, the inner taper sleeve body is matched with the outer taper sleeve, one end of the inner taper sleeve body is arranged in the outer taper sleeve, the driving block is of a hexagon nut structure, and an inner thread is arranged in the driving block; the detection device is simple in structure, convenient to use and good in sealing performance, and is arranged in the pipe, so that extrusion deformation of the pipe is avoided, and damage is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of hydraulic detection devices, specifically to a kind of non-injury pipe hydraulic detection device, belong to pipe detection technical field. BACKGROUND

[0002] At present, pipe is often used in nuclear power, chemical industry and other fields on various types of heat exchangers, and the characteristics of such pipes are small outer diameter and thin wall thickness. After detection by the existing hydraulic test method, the pipe end will be deformed due to pressure bearing. At the same time, after the heat exchange pipe is penetrated, the product quality and safety need to be verified by the pipe layer hydraulic test method. However, due to the limitation of the clamping method, the conventional hydraulic test cannot be completed for this situation.

[0003] The hydraulic test of the pipe refers to testing the pipe sample using a liquid (usually water or other liquid) as a medium. The main purpose is to check the sealing performance of the pipe sample. During the hydraulic test, the medium is injected into the pipe sample, and the pipe sample is placed for a period of time to check for leaks. The two ends of the pipe sample are provided with sealing devices to connect with the pipe sample and the water pressure equipment. The sealing device currently used is to insert the pipe sample into the plug and then wrap a tapered pipe clamp outside the pipe sample. Then, a nut is tightened with the threads of the plug joint. However, the pipe used for the above-mentioned heat exchanger has a small outer diameter and thin wall thickness, and the setting of the pipe clamp can easily cause deformation of the pipe. If the size of the pipe is too small, it can cause poor sealing effect. To address this issue, the patent CN220893963U plastic pipe high sealing static hydraulic detection device includes a clamp for clamping the two ends of the pipe sample, a pressure cover, and a pressure disc. The pressure disc is fixed on the outside of the pipe sample by setting a locking element that moves radially on the pressure disc. The connection section of the pressure disc and the pressure cover is connected to fix the pressure cover and limit the first sealing ring between the pipe sample and the pressure cover with the pressure cover. This achieves the fixation and limiting of various pipe diameter sizes with errors. The first and second sealing rings achieve double sealing of the pipe sample and the outer space, improving the sealing effect and maintaining the sealing state of the inner cavity of the connection section of the pressure cover. However, this detection device is a new structure and not a modification of the original sealing structure. The structure is complex, the manufacturing cost is high, and it is not suitable for small outer diameter and thin wall thickness pipes, which can still cause deformation. Moreover, it is time-consuming and labor-intensive to use.

[0004] Therefore, it is a technical problem for those skilled in the art to develop a non-injury pipe hydraulic detection device that can overcome the above defects. UTILITY MODEL CONTENTS

[0005] The utility model wants to solve the technical problem of overcoming the prior art's shortcomings, provide a kind of non-injury pipe hydraulic detection device, the detection device simple structure, convenient to use, good sealing, set in pipe, avoid extrusion deformation to pipe, reduce the damage caused.

[0006] In order to solve the above technical problems, the utility model provides a kind of non-injury pipe hydraulic detection device, it is characterized by: including sealing element, the two ends of the pipe sample to be measured are respectively equipped with sealing element, one sealing element is connected with water pressure equipment, another sealing element is connected with high pressure valve, sealing element includes plug and the O-ring, gasket, outer cone sleeve and inner cone sleeve that are successively set on the one side of plug;

[0007] The through-hole in outer cone sleeve is circular platform structure;

[0008] Inner cone sleeve includes drive block set on the one side of inner cone sleeve body, and inner cone sleeve body is circular platform structure with through-hole in the middle, and inner cone sleeve body is matched with outer cone sleeve, and one end of inner cone sleeve body is set in outer cone sleeve, and drive block is hexagon nut structure, and inner thread is equipped in drive block;

[0009] Inner cone sleeve is tightened through external thread on plug, and outer cone sleeve is compressed to apply pressure to gasket and O-ring, so that O-ring is expanded outward to complete sealing, and also make outer cone sleeve expand outward, and the inner wall of pipe sample to be measured is pressed, and tightness is formed to bear hydraulic pressure to complete plugging effect.

[0010] The utility model further defines the technical scheme as:

[0011] Further, in the foregoing non-injury pipe hydraulic detection device, the plug is provided with a through hole, and the plug includes a plug body and a plug cap, the plug cap is arranged on one side of the plug body, the plug body is composed of a receiving part and a rotating part, the receiving part is located between the plug cap and the rotating part, the O-ring, the gasket and the outer cone sleeve are successively sleeved on the receiving part, the O-ring abuts against the plug cap, the rotating part is provided with external threads on the outer surface and internal threads on the inner surface, the inner cone sleeve body is sleeved on the plug body, and the drive block is threadedly connected to the rotating part, the drive block is rotated on the rotating part to drive the inner cone sleeve body to be partially embedded in the outer cone sleeve.

[0012] Technical effects, the utility model sets up plug and seals O-ring at the same time, avoids falling, the outer diameter of plug is smaller than the outer diameter of sealing ring, the sealing ring is expanded outward to fit the inner wall of pipe, further improves sealing performance, the outer diameter of receiving part is set according to the sealing ring and pipe diameter, the surface is smooth, plays a sealing role, external threads play a pushing role, extrude sealing ring and seal pipe by expanding diameter, internal threads facilitate the connection of pressing equipment, plug is matched with O-ring, gasket and outer and inner cone sleeve, so that inner and outer cone sleeves are fastened on plug at the same time, sealing is efficiently completed, and installation and dismounting are convenient.

[0013] The outer cone sleeve is provided with an open gap along the length direction.

[0014] The outer cone sleeve is provided with an open gap along the length direction.

[0015] The outer cone sleeve is provided with an open gap along the length direction.

[0016] The outer cone sleeve is provided with an open gap along the length direction.

[0017] The outer cone sleeve is provided with an open gap along the length direction.

[0018] The outer cone sleeve is provided with an open gap along the length direction.

[0019] The outer cone sleeve is provided with an open gap along the length direction.

[0020] The outer cone sleeve is provided with an open gap along the length direction.

[0021] The outer cone sleeve is provided with an open gap along the length direction.

[0022] The utility model discloses a threaded cooperation of inner and outer taper sleeves plays two roles, on one hand, extruding 0 type ring forms sealing, on the other hand, the outer taper sleeve expands under the embedding of the inner taper sleeve, and the force after expansion is greater than the force of hydraulic pressure to form plugging, tightly adheres the whole plug to the inner wall of pipe material, greatly improves the pressure upper limit of pipe material hydraulic detection, and because the main adhering place is corrugated, reduces the possibility of damage to pipe material, the inner wall of plug is connected hydraulic test pump through thread, and the sealing of water inlet and outlet end is enhanced.

[0023] The utility model discloses a threaded cooperation of inner and outer taper sleeves plays two roles, on one hand, extruding 0 type ring forms sealing, on the other hand, the outer taper sleeve expands under the embedding of the inner taper sleeve, and the force after expansion is greater than the force of hydraulic pressure to form plugging, tightly adheres the whole plug to the inner wall of pipe material, greatly improves the pressure upper limit of pipe material hydraulic detection, and because the main adhering place is corrugated, reduces the possibility of damage to pipe material, the inner wall of plug is connected hydraulic test pump through thread, and the sealing of water inlet and outlet end is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device;

[0025] Figure 2 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 1 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device;

[0026] Figure 3 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 1 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device;

[0027] Figure 4 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 3 It is left view of the utility model embodiment no - damage pipe material hydraulic detection device;

[0028] Figure 5 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 1 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device;

[0029] Figure 6 It is left view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 5

[0030] Figure 7 It is right view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 5

[0031] Figure 8 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 1 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device;

[0032] Figure 9 It is side view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 8

[0033] Figure 10 It is structure schematic view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 1

[0034] Figure 11 It is side view of the utility model embodiment no - damage pipe material hydraulic detection device; Figure 10

[0035] ​​​​​Figure 12 For Figure 1 The structural schematic diagram of a pipe sample to be tested is shown in the figure.

[0036] In the figure: 1-pipe sample to be tested, 2-plug, 21-plug cap, 22-adapter, 23-rotating part, 3-O ring, 4-gasket, 5-outer taper sleeve, 51-opening gap, 6-inner taper sleeve, 61-body of inner taper sleeve, 62-driving block. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The technical features involved in each of the embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0038] The present application provides a non-invasive pipe hydraulic detection device, referring to Figure 1 and 12 , comprising a sealing element, the two ends of the pipe sample to be tested 1 are respectively provided with sealing elements, one of the sealing elements is connected with a water pressure device (hydraulic test pump) through a high-pressure hose with external threads, and the other sealing element is connected with a high-pressure valve, the sealing element comprises a plug 2 and an O-ring 3, a gasket 4, an outer taper sleeve 5 and an inner taper sleeve 6 which are sequentially arranged on one side of the plug 2; Figures 8-9 Figures 10-11

[0039] Referring to Figures 3-4 , an opening gap is arranged on the outer taper sleeve 5, the width of the opening gap is controlled to be 0.2-1 cm, which is too large to affect the sealing performance, and is kept at 0.2-1 cm to ensure the ability to expand outward and not affect the sealing performance, and the expansion of the outer taper sleeve is facilitated after the opening, the through hole in the outer taper sleeve 5 is a circular truncated cone structure with a certain taper which is adjusted according to actual needs, the outer surface of the outer taper sleeve 5 is processed into a corrugated shape, the diameter of the outer taper sleeve is slightly smaller than the inner diameter of the pipe, the corrugated surface has more contact points when contacting the inner wall of the pipe during detection, so as to increase the friction force with the inner wall of the pipe, and the two side surfaces of the outer taper sleeve are smooth surfaces, which are used to tightly fit with the gasket during installation;

[0040] Referring to Figures 5-7 ​​The inner cone sleeve 6 is spliced by two parts, including the inner cone sleeve body 61 and the driving block 62 arranged on one side of the inner cone sleeve body 61. The inner cone sleeve body 61 is a circular truncated cone structure with a through hole in the middle, and the taper is consistent with the taper of the inner cone sleeve. The inner cone sleeve body 61 is matched with the outer cone sleeve 5. One end of the inner cone sleeve body 61 is embedded in the outer cone sleeve 5. The driving block 62 is a hexagonal nut structure. In order to facilitate the installation of the part, the driving block 62 is provided with an inner thread matched with the outer thread of the plug. The inner thread is used to tighten the inner cone sleeve on the outer thread of the plug. The outer diameter of the inner cone sleeve body 61 is 0.06-0.2mm smaller than the inner diameter of the pipe sample 1, so as to be conveniently arranged in the pipe. The minimum diameter of the outer diameter of the inner cone sleeve body 61 is 0.05-0.2mm smaller than the maximum inner diameter of the outer cone sleeve 5, so as to be conveniently embedded in the outer cone sleeve. The maximum diameter of the outer diameter of the inner cone sleeve body 61 is 0.2mm larger than the outer diameter of the outer cone sleeve 5, so as to be conveniently expanded outward when extruding. The outer diameter of the expanded outer cone sleeve is 0.2mm-1mm larger than the inner diameter of the pipe, so as to be conveniently further blocked. The length of the inner cone sleeve body is shorter than that of the outer cone sleeve, so as to be conveniently installed and matched. The inner wall of the plug is provided with an inner thread. In work, the inner thread can be linked with the hydraulic test pump, and the hydraulic sealing performance is enhanced through the thread.

[0041] The inner cone sleeve 6 is tightened in the direction of the outer cone sleeve 5 through the outer thread on the plug 2, and at the same time, the outer cone sleeve 5 is pressed against the gasket and extrudes the O-shaped ring 3. The pressure makes the O-shaped ring expand outward, enhances the hydraulic sealing performance, and also makes the outer cone sleeve 5 expand outward, presses against the inner wall of the pipe sample 1, forms the expansion force to bear the hydraulic pressure, and completes the blocking effect.

[0042] In the embodiment, refer to Figure 2The plug 2 is provided with a through hole, the plug 2 comprises a plug body and a plug cap 21, the plug cap 21 is arranged on one side of the plug body, the plug body is composed of a receiving part 22 and a rotating part 23, the receiving part 22 is located between the plug cap 21 and the rotating part 23, an O-ring 3, a gasket 4 and an outer taper sleeve 5 are sequentially sleeved on the receiving part 22, the O-ring 3 abuts against the plug cap 21, the outer surface of the rotating part 23 is provided with external threads, and the inner surface of the rotating part 23 is provided with internal threads, an inner taper sleeve body 61 is sleeved on the plug body, a driving block 62 is threadedly connected to the rotating part 23, the driving block 62 is rotated on the rotating part 23 to drive the inner taper sleeve body 61 to be partially embedded in the outer taper sleeve 5, the outer diameters of the plug, the receiving part and the rotating part are sequentially reduced, the receiving part is matched with the O-ring, the gasket and the outer taper sleeve, the plug is matched with the pipe material sample to be detected, the rotating part is matched with the driving block, the normal adaptation of the device and the normal operation of the work are ensured, the plug blocks and limits the O-ring at the same time, so that the O-ring is prevented from sliding off, the outer diameter of the plug is smaller than the outer diameter of the sealing ring, the sealing ring is expanded outward to be attached to the inner wall of the pipe material, and the sealing performance is further improved, the outer diameter of the receiving part is set according to the sealing ring and the pipe diameter, the surface of the receiving part is smooth, the receiving part plays a sealing role, the external threads play a pushing and pressing role, the sealing ring is extruded and expanded in diameter to be sealed with the pipe, the internal threads facilitate the connection of the pressing equipment, the plug is matched with the O-ring, the gasket and the outer taper sleeve and the inner taper sleeve, so that the inner taper sleeve and the outer taper sleeve are tightly fastened on the plug at the same time, the sealing is efficiently completed, and the plug is convenient to install and disassemble.

[0043] In specific implementation, the plug is assembled on both ends of the pipe material sample to be detected, then the O-ring is assembled on the plug, the O-ring is pressed by the gasket, the outer taper sleeve is abutted against the other side of the gasket, finally the inner taper sleeve is screwed on the external threads on the plug, the outer taper sleeve is pressed to apply pressure to the O-ring, the O-ring is expanded outward, at the same time, the embedding of the inner taper sleeve also makes the outer taper sleeve with the open gap expanded outward until the inner wall of the pipe material is abutted against, so that the inner wall is sealed; finally, the plug of the water inlet end is connected with the hydraulic test pump through the threaded inner wall, and the plug of the water outlet end is connected with the high-pressure valve, after the installation is completed, the pressure is measured, the valve is closed during the pressure measurement, and the valve is opened to drain water after the pressure measurement is completed. The hydraulic detection device improves the friction force with the inner wall of the pipe material, improves the upper limit of the pressure measurement, and greatly reduces the probability of damage to the inner wall of the pipe material.

[0044] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A non-invasive hydraulic tube testing apparatus, characterized by: The utility model relates to a sealing element, and two ends of a pipe sample (1) to be tested are respectively provided with the sealing element, one of which is connected with a water pressure device, and the other is connected with a high-pressure valve, the sealing element comprises a plug (2) and an O-ring (3), a gasket (4), an outer taper sleeve (5) and an inner taper sleeve (6) which are sequentially sleeved on one side of the plug (2); The through hole in the outer taper sleeve (5) is a circular truncated cone structure. The inner taper sleeve (6) comprises an inner taper sleeve body (61) and a driving block (62) arranged on one side of the inner taper sleeve body (61), the inner taper sleeve body (61) is a circular truncated cone structure with a through hole in the middle, the inner taper sleeve body (61) is matched with the outer taper sleeve (5), one end of the inner taper sleeve body (61) is arranged in the outer taper sleeve (5), and the driving block (62) is a hexagonal nut structure and is internally provided with internal threads. The inner taper sleeve (6) is tightened through external threads on the plug (2), the outer taper sleeve (5) is compressed to apply pressure to the gasket (4) and the O-ring (3), the O-ring (3) is expanded outward to complete sealing, and the outer taper sleeve (5) is also expanded outward to abut against the inner wall of the pipe sample (1) to be tested and form a tightness to bear the hydraulic pressure and complete plugging.

2. The non-invasive hydraulic tube testing apparatus of claim 1, wherein: The plug (2) is internally provided with a through hole, the plug (2) comprises a plug body and a plug cap (21), the plug cap (21) is arranged on one side of the plug body, the plug body is composed of a receiving part (22) and a rotating part (23), the receiving part (22) is located between the plug cap (21) and the rotating part (23), the O-ring (3), the gasket (4) and the outer taper sleeve (5) are sequentially sleeved on the receiving part (22), the O-ring (3) abuts against the plug cap (21), the rotating part (23) is externally provided with external threads and internally provided with internal threads, the inner taper sleeve body (61) is sleeved on the plug body, and the driving block (62) is threadedly connected on the rotating part (23), the driving block (62) is rotated on the rotating part (23) to drive the inner taper sleeve body (61) to be partially embedded in the outer taper sleeve (5).

3. The non-invasive hydraulic tube testing apparatus of claim 1, wherein: An open gap (51) is arranged on the outer taper sleeve (5) in the length direction.

4. The non-invasive hydraulic tube testing apparatus of claim 1, wherein: The outer surface of the outer taper sleeve (5) is a corrugated surface, and the two sides of the outer taper sleeve (5) are smooth surfaces.

5. The non-invasive hydraulic tube testing apparatus of claim 1, wherein: The outer diameter of the inner taper sleeve body (61) is smaller than the inner diameter of the pipe sample (1) to be tested, the minimum diameter of the outer diameter of the inner taper sleeve body (61) is smaller than the maximum inner diameter of the outer taper sleeve (5), and the maximum diameter of the outer diameter of the inner taper sleeve body (61) is greater than the outer diameter of the outer taper sleeve (5).

6. The non-invasive hydraulic tube inspection apparatus of claim 1, wherein: The length of the inner taper sleeve body (61) is shorter than the length of the outer taper sleeve (5).

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