CN213180544U - Underwater air pressure test device for stainless steel pipe - Google Patents

Abstract

The utility model discloses a nonrust steel pipe atmospheric pressure test device under water, comprising a water tank, the fixed two fixing bases that are provided with of symmetry on the both sides inner wall of water tank, two be provided with nonrust steel pipe between the fixing base, nonrust steel pipe passes through the fixed setting of fixed establishment between two fixing bases, the fixed intake pipe and the outlet duct of being provided with of symmetry on the both sides outer wall of water tank, the lateral wall that intake pipe and outlet duct all run through the water tank sets up with two fixing bases intercommunication respectively, be equipped with the gas transmission passageway that corresponds with intake pipe and outlet duct in the fixing base, still be equipped with the atmospheric pressure control device on the outlet duct. The utility model discloses can carry out fixed seal with the nonrust steel pipe of different pipe diameters, improve the adaptability of device greatly, and can control the atmospheric pressure increase in the stainless steel pipe for slight gas leakage department can appear out under the effect of atmospheric pressure on the nonrust steel pipe, has improved the detection effect of device greatly.

Description

Underwater air pressure test device for stainless steel pipe

Technical Field

The utility model relates to a nonrust steel pipe seepage detection technical field especially relates to a nonrust steel pipe atmospheric pressure test device under water.

Background

The leakage detection of the stainless steel pipe is generally realized by adopting a hydraulic test method, when the stainless steel pipe is subjected to a hydraulic test, because the stainless steel pipe has defects which are not easy to be found by naked eyes, such as microcracks, small air holes and the like, liquid can leak from the defects of the steel pipe, the pipe is indicated to be unqualified, however, when the defects of the steel pipe are small to a certain degree, the liquid cannot leak from the defects due to large water molecules, the existing problems cannot be detected, and at the moment, an air pressure test bed is required to be used for detecting the stainless steel pipe.

However, in the prior art, when carrying out the atmospheric pressure experiment under water to stainless steel pipe, often because the restriction of intake pipe and outlet duct for can only detect the trachea of a pipe diameter, the limitation is great, and only adopts gaseous whether the detection leaks through stainless steel pipe, does not strut some slight gas pockets on the stainless steel pipe and detect again through control increase atmospheric pressure, greatly reduced the detection effect of stainless steel pipe.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: unable stainless steel pipe that adapts to different pipe diameters, the limitation is great, and only adopts gas to detect whether the seepage through stainless steel pipe, can't detect out some tiny holes, and the effect that detects is relatively poor, and the stainless steel pipe atmospheric pressure test device under water that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a nonrust steel pipe atmospheric pressure test device under water, includes the water tank, the fixed two fixing bases that are provided with of symmetry on the both sides inner wall of water tank, two be provided with nonrust steel pipe between the fixing base, nonrust steel pipe passes through fixed the setting between two fixing bases of fixed establishment, the fixed intake pipe and the outlet duct of being provided with of symmetry on the both sides outer wall of water tank, the lateral wall that intake pipe and outlet duct all run through the water tank sets up with two fixing base intercommunication respectively, be equipped with the gas transmission passageway that corresponds with intake pipe and outlet duct in the fixing base, still be equipped with air pressure control device.

Preferably, fixed establishment includes the flexible pipe of two sets of variation in size, and is two sets of flexible pipe overlaps each other in proper order from big to small and establishes the setting, every all be equipped with the external screw thread on the outer wall of flexible pipe, and every all be equipped with the internal thread that corresponds with the flexible pipe external screw thread of hugging closely its inner wall setting on the inner wall of flexible pipe, two flexible groove has all been seted up on the fixing base, and all be equipped with the internal thread that corresponds with the maximum flexible pipe outer wall screw thread on the inner wall in two flexible grooves, minimum fixed being provided with the gas-supply pipe on the inner wall of flexible pipe, the gas-supply pipe sets up with gas transmission channel intercommunication, every all fixed being provided with the sealing washer on the.

Preferably, the air pressure control device comprises a sealing plate, the sealing plate is arranged in the air outlet pipe in a sliding manner, the sealing plate is symmetrically and fixedly provided with two sliding plates, the side walls of the two sides of the air outlet pipe are symmetrically provided with strip-shaped sliding openings corresponding to the two sliding plates, and the two sliding plates are provided with limiting mechanisms corresponding to the two sliding plates.

Preferably, the limiting mechanism comprises two limiting plates, the two limiting plates are fixedly arranged on the side wall of one end, far away from the sealing plate, of the two sliding plates respectively, the two limiting plates are arranged close to the outer wall of the air outlet pipe and the outer wall of the water tank, each limiting plate is provided with a limiting nut in a penetrating mode in a rotating mode, and threaded holes corresponding to the limiting nuts are symmetrically formed in the outer wall of the air outlet pipe.

Preferably, the air inlet pipe and the air outlet pipe penetrate through the water tank and are provided with sealing gaskets.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up the flexible pipe of a plurality of variation in size realized the inlet end and give vent to anger the nonrust steel pipe that the end can adapt to different internal diameters, support nonrust steel pipe, the cooperation of rethread sealing washer, realized the sealed fixed to nonrust steel pipe, through the cooperation of limiting plate and restriction nut, the realization is fixed the one end at the bar sliding port with the closing plate, realize the sealed to the outlet duct, thereby make the increase of atmospheric pressure in the nonrust steel pipe, thereby prop open tiny hole, make the knot that detects more accurate, improve detection effect greatly, through setting up the gas-supply pipe, realize that gas gets into the gas-supply pipe output from the one end of outlet duct again from the gas-supply pipe of air inlet one end, accomplish gaseous stainless steel pipe that passes through, thereby realize utilizing gaseous detection to the stainless steel pipe seepage.

Drawings

Fig. 1 is a schematic structural view of an underwater pressure test device for stainless steel pipes according to the present invention;

FIG. 2 is a schematic side view of the fixing base;

fig. 3 is a schematic structural diagram at a in fig. 1.

In the figure: 1 water tank, 2 intake pipes, 3 outlet pipes, 4 fixing seats, 5 stainless steel pipes, 6 telescopic pipes, 7 sealing rings, 8 gas pipes, 9 sliding plates, 10 strip-shaped sliding openings, 11 sealing plates, 12 limiting plates and 13 limiting nuts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, an underwater pressure testing device for stainless steel pipes comprises a water tank 1, two fixed seats 4 are symmetrically and fixedly arranged on the inner walls of two sides of the water tank 1, a stainless steel pipe 5 is arranged between the two fixed seats 4, the stainless steel pipe 5 is fixedly arranged between the two fixed seats 4 through a fixing mechanism, the fixing mechanism comprises two groups of telescopic pipes 6 with different sizes, the two groups of telescopic pipes 6 are sequentially sleeved with each other from large to small, the outer wall of each telescopic pipe 6 is provided with external threads, the inner wall of each telescopic pipe 6 is provided with internal threads corresponding to the external threads of the telescopic pipe 6 arranged close to the inner wall of the telescopic pipe, the two fixed seats 4 are provided with telescopic grooves, the inner walls of the two telescopic grooves are provided with internal threads corresponding to the external threads of the largest telescopic pipe 6, the inner wall of the smallest telescopic pipe 6 is fixedly provided with a gas pipe 8, the side wall of one end of each telescopic pipe 6 far away from the fixed seat 4 is fixedly provided with a sealing ring 7, the air inlet end and the air outlet end can be adapted to stainless steel pipes 5 with different inner diameters by arranging a plurality of telescopic pipes 6 with different sizes, the stainless steel pipes 5 are supported, the sealing and fixing of the stainless steel pipes 5 are realized by the matching of the sealing rings 7, the air inlet pipe 2 and the air outlet pipe 3 are symmetrically and fixedly arranged on the outer walls of two sides of the water tank 1, the air inlet pipe 2 and the air outlet pipe 3 both penetrate through the side wall of the water tank 1 and are respectively communicated with the two fixed seats 4, and the air inlet pipe 2 and the air outlet pipe 3 penetrate through the water tank 1 and are provided with sealing gaskets, through arranging a sealing gasket, liquid is prevented from leaking from a through part, a gas transmission channel corresponding to a gas inlet pipe 2 and a gas outlet pipe 3 is arranged in a fixed seat 4, a gas pressure control device is also arranged on the gas outlet pipe 3 and comprises a sealing plate 11, the sealing plate 11 is arranged in the gas outlet pipe 3 in a sliding way, two sliding plates 9 are symmetrically and fixedly arranged on the sealing plate 11, strip-shaped sliding openings 10 corresponding to the two sliding plates 9 are symmetrically arranged on the side walls of two sides of the gas outlet pipe 3, limiting mechanisms corresponding to the two sliding plates 9 are respectively arranged on the two sliding plates 9, the limiting mechanisms comprise two limiting plates 12, the two limiting plates 12 are respectively and fixedly arranged on the side walls of one ends, far away from the sealing plate 11, of the two limiting plates 12 are arranged close to the outer wall of the gas outlet pipe 3 and the water tank 1, a limiting nut 13 is arranged on each limiting plate 12 in a, through the cooperation of limiting plate 12 and limiting nut 13, realize fixing sealing plate 11 in the one end of bar spout 10, realize sealed to outlet duct 3 to make the atmospheric pressure increase in the nonrust steel pipe 5, thereby strut tiny hole, make the knot that detects more accurate, improve detection effect greatly.

In the utility model, when the worker detects the leakage of the stainless steel pipe 5, the worker only needs to select the telescopic pipe 6 corresponding to the stainless steel pipe 5 on the fixed seats 4, place the stainless steel pipe 5 between the two fixed seats 4 and rotate out of the selected telescopic pipe 6 until the telescopic pipes 6 on both sides slide into the stainless steel pipe 5 to complete the fixation and sealing of the stainless steel pipe 5, inject water into the water tank 1, inject gas into the stainless steel pipe 5 from the air inlet pipe 2 through the air delivery pipe 8, judge whether the stainless steel pipe 5 leaks or not by observing whether bubbles are generated from the pipe wall in the water, when the stainless steel pipe 5 needs to be detected more accurately, only needs to slide the sliding plate 9 to the end of the strip-shaped sliding opening 10 close to the water tank 1, after screwing the limiting nut 13 to complete the fixation of the limiting plate 12, the sealing of the sealing plate 11 to the air outlet pipe 3 can be completed, and then inject gas into the stainless steel pipe 5, the atmospheric pressure increase in the stainless steel pipe 5 to strut some less holes of stainless steel pipe 5, and then realize more accurate detection to stainless steel pipe 5.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a nonrust steel pipe atmospheric pressure test device under water, includes water tank (1), its characterized in that, the symmetry is fixed on the both sides inner wall of water tank (1) and is provided with two fixing base (4), two be provided with nonrust steel pipe (5) between fixing base (4), nonrust steel pipe (5) are fixed through fixed establishment and are set up between two fixing base (4), the symmetry is fixed on the both sides outer wall of water tank (1) and is provided with intake pipe (2) and outlet duct (3), the lateral wall that intake pipe (2) and outlet duct (3) all run through water tank (1) sets up with two fixing base (4) intercommunication respectively, be equipped with the gas transmission passageway that corresponds with intake pipe (2) and outlet duct (3) in fixing base (4), still be equipped with air pressure control device on outlet duct (3).

2. The underwater air pressure test device for the stainless steel pipe according to claim 1, the fixing mechanism comprises two groups of extension tubes (6) with different sizes, the two groups of extension tubes (6) are sequentially sleeved with each other from large to small, the outer wall of each extension tube (6) is provided with an external thread, and the inner wall of each telescopic pipe (6) is provided with an internal thread corresponding to the external thread of the telescopic pipe (6) arranged close to the inner wall, the two fixed seats (4) are provided with telescopic grooves, inner threads corresponding to the threads on the outer wall of the largest extension tube (6) are arranged on the inner walls of the two extension grooves, a gas delivery pipe (8) is fixedly arranged on the inner wall of the smallest extension tube (6), the gas transmission pipe (8) is communicated with the gas transmission channel, and a sealing ring (7) is fixedly arranged on the side wall of one end, away from the fixed seat (4), of the telescopic pipe (6).

3. The underwater pressure test device for the stainless steel pipes according to claim 1, wherein the pressure control device comprises a sealing plate (11), the sealing plate (11) is slidably arranged in the air outlet pipe (3), the sealing plate (11) is symmetrically and fixedly provided with two sliding plates (9), the side walls of two sides of the air outlet pipe (3) are symmetrically provided with strip-shaped sliding openings (10) corresponding to the two sliding plates (9), and the two sliding plates (9) are respectively provided with a limiting mechanism corresponding to the two sliding plates.

4. The underwater pressure test device for the stainless steel pipes according to claim 3, wherein the limiting mechanism comprises two limiting plates (12), the two limiting plates (12) are respectively fixedly arranged on the side wall of one end, away from the sealing plate (11), of the two sliding plates (9), the two limiting plates (12) are arranged close to the outer wall of the air outlet pipe (3) and the outer wall of the water tank (1), each limiting plate (12) is rotatably provided with a limiting nut (13) in a penetrating mode, and threaded holes corresponding to the limiting nuts (13) are symmetrically formed in the outer wall of the air outlet pipe (3).

5. The underwater pressure test device for the stainless steel pipe according to claim 1, wherein sealing gaskets are arranged at positions where the air inlet pipe (2) and the air outlet pipe (3) penetrate through the water tank (1).

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