A device for detecting air tightness of compression-type stainless steel pipe fittings

Abstract

The present invention discloses an air tightness detection device for compression-type stainless steel pipe fittings, comprising a shell, a base provided on the top outer wall of the shell, a pressure plate provided on the top of the base, a matching groove provided on the outer wall on the side where the pressure plate and the base are close to each other, a bend pipe body provided inside the matching groove, a cylinder 1 connected to the top outer wall of the shell by bolts, a sealing ring 1 fixed to one end of the output shaft of the cylinder 1, the sealing ring is sleeved on one end of the bend pipe body, a cylinder 2 connected to the top outer wall of the shell by bolts, a sealing ring 2 fixed to one end of the output shaft of the cylinder 2. The present invention drives the sealing ring 1 and the sealing ring 2 to seal the two ends of the bend pipe body respectively through the provided cylinder 1 and cylinder 2, and fills the interior of the bend pipe body with compressed air through an air pump. By observing the numerical change of the pressure gauge, it can be judged whether the bend pipe body is airtight or not, and has the advantages of simple detection principle and low detection cost.

Description

Technical Field

[0001] The present invention relates to the technical field of air tightness detection of pipe fittings, and in particular to an air tightness detection device for compression-type stainless steel pipe fittings. Background Art

[0002] Stainless steel pipe fittings are common accessories in pipeline connections. Specific specifications include elbows, tees, and crosses. When elbow-type stainless steel pipe fittings are produced, they need to be tested for air tightness to prevent liquid or gas from leaking from the scratches on the stainless steel elbows during use.

[0003] Chinese patent number CN202111218911.8 discloses a rapid air tightness testing device for a stainless steel pipe, including a sealing assembly, a clamping assembly, a lifting assembly and a pressure measuring assembly, characterized in that: a support block is provided at the bottom of the sealing assembly, a base is provided on one side of the support block, an air pump is provided on the top of the support block, an air inlet pipe is provided on the top of the air pump, and a first support plate is provided on the top of the air inlet pipe.

[0004] When inspecting stainless steel pipe fittings, eddy current testing equipment is usually used. However, the high cost of eddy current testing equipment leads to high costs when testing the air tightness of stainless steel coils. Therefore, it is urgent to design a compression-type air tightness testing device for stainless steel pipe fittings to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide an air tightness detection device for compression-type stainless steel pipe fittings to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A device for detecting air tightness of compressed stainless steel pipe fittings, comprising a shell, a base is provided on the top outer wall of the shell, a pressure plate is provided on the top of the base, a matching groove is provided on the outer wall on the side where the pressure plate and the base are close to each other, a bent pipe body is provided inside the matching groove, a cylinder 1 is connected to the top outer wall of the shell by bolts, a sealing ring 1 is fixed to one end of the output shaft of the cylinder 1, and the sealing ring is sleeved on one end of the bent pipe body, a cylinder 2 is connected to the top outer wall of the shell by bolts, a sealing ring 2 is fixed to one end of the output shaft of the cylinder 2, and the sealing ring 2 is sleeved on the other end of the bent pipe body, a pressure gauge is connected to the top outer wall of the sealing ring 2 by a thread, and a side outer wall of the sealing ring 1 is threaded The cam is connected to the air filter press, and the air filter press has a plurality of air filter presses on its upper and lower ends, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press, and the plurality of air filter presses are connected to the air filter press,

[0008] Furthermore, a base plate is provided at the bottom of the shell, the top outer wall of the base plate is connected with evenly distributed screw sleeves through bolts, the bottom outer wall of the shell is connected with evenly distributed adjusting screws through bearings, and the bottom end of the adjusting screw is connected to the screw sleeve through a thread.

[0009] Furthermore, the bottom outer wall of the shell is connected with evenly distributed guide sleeves through bolts, and the guide sleeves are sleeved on the outside of the threaded sleeve.

[0010] Furthermore, the top end of the adjusting screw extends to the inside of the housing and is welded with a driven gear, and the bottom inner wall of the housing is connected to a driving gear through a bearing, and the driving gear is meshed with the driven gear.

[0011] Furthermore, the bottom outer wall of the shell is connected to a motor via bolts, and one end of the output shaft of the motor is connected to the driving gear via a key.

[0012] Furthermore, the interior of the base is connected to a cylinder three via bolts, and one end of the output shaft of the cylinder three is hinged to the pressure plate via an axis.

[0013] Furthermore, a baffle is connected to an outer wall of one side of the base via bolts, and the baffle is adapted to the pressure plate.

[0014] Furthermore, a positioning column is welded to the bottom outer wall of the pressure plate, a positioning hole is opened on the top outer wall of the base, and the positioning column is adapted to the positioning hole.

[0015] Furthermore, a limiting groove is provided on the outer wall of the guide sleeve, and a limiting block is connected to the outer wall of the screw sleeve via a bolt, and the limiting block is slidably connected to the inside of the limiting groove.

[0016] Furthermore, a mounting seat is welded to the bottom outer wall of the bottom plate, and a mounting hole is opened on the bottom outer wall of the mounting seat.

[0017] In the above technical solution, the present invention provides an air tightness detection device for compression-type stainless steel pipe fittings, which has the following beneficial effects:

[0018] (1) The two ends of the elbow body are sealed by driving the sealing ring 1 and the sealing ring 2 respectively through the provided cylinder 1 and the cylinder 2, and the compressed air is filled into the interior of the elbow body through the air pump. By observing the value change of the pressure gauge, it can be judged whether the air tightness of the elbow body is good. The detection principle is simple and the detection cost is low.

[0019] (2) The base is driven to slide by the screw rod 1 and the screw rod 2 respectively, so that the two ends of the elbow body can correspond to the sealing ring 1 and the sealing ring 2, thereby making it more convenient to debug the elbow body during the air tightness test;

[0020] (3) The motor is set to drive the driving gear to rotate, so that the driving gear drives the driven gear and the adjusting screw to rotate, so that the height of the shell can be adjusted, thereby achieving the effect that the air tightness detection device can be adjusted according to the height of different workers;

[0021] (4) The pressure plate is driven to move up and down by the provided cylinder 3, and the pressure plate can be hinged with the output shaft of the cylinder, making it more convenient for the pressure plate to press and fix the elbow body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 The present invention provides an overall structural diagram of an embodiment of a compression-type stainless steel pipe air tightness detection device.

[0024] Figure 2The figure is a schematic diagram of the internal structure of a shell provided in an embodiment of the present invention for a compression-type stainless steel pipe air tightness detection device.

[0025] Figure 3 This is a schematic diagram of the enlarged structure of point A provided in an embodiment of the present invention for a compression-type stainless steel pipe air tightness detection device.

[0026] Figure 4 This is a schematic diagram of the base structure provided in an embodiment of the present invention for a compression-type stainless steel pipe air tightness detection device.

[0027] Figure 5 The figure is a schematic diagram of the matching groove structure provided in an embodiment of the present invention for a compression-type stainless steel pipe air tightness detection device.

[0028] Description of reference numerals:

[0029] 1 housing, 2 cylinder 1, 3 cylinder 2, 4 sealing ring 1, 5 sealing ring 2, 6 bottom plate, 7 air pump, 8 base, 9 pressure plate, 10 elbow body, 11 limit block, 12 pressure gauge, 13 switch valve, 14 mounting plate 1, 15 screw 1, 16 slide 1, 17 slider 1, 18 slide 2, 19 slider 2, 20 screw 2, 21 mounting plate 2, 22 matching groove, 23 cylinder 3, 24 positioning column, 25 positioning hole, 26 baffle, 27 adjusting screw, 28 screw sleeve, 29 guide sleeve, 30 driven gear, 31 driving gear, 32 motor, 33 mounting seat, 34 mounting hole, 35 limit groove. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-5As shown, an embodiment of the present invention provides an air tightness detection device for a compression-type stainless steel pipe fitting, comprising a shell 1, a top outer wall of the shell 1 is provided with a base 8, a pressure plate 9 is provided on the top of the base 8, and a matching groove 22 is provided on the outer wall on the side where the pressure plate 9 and the base 8 are close to each other, and a bend pipe body 10 is provided inside the matching groove 22. The top outer wall of the shell 1 is connected to a cylinder 2 by bolts, and a sealing ring 4 is fixed at one end of the output shaft of the cylinder 2, and the sealing ring 4 is sleeved on one end of the bend pipe body 10. The top outer wall of the shell 1 is connected to a cylinder 2 3 by bolts, and a sealing ring 2 5 is fixed at one end of the output shaft of the cylinder 2 3, and the sealing ring 2 5 is sleeved on the other end of the bend pipe body 10. The top outer wall of the sealing ring 2 5 is connected to a pressure gauge 12 by a thread, and the outer wall of one side of the sealing ring 4 is connected by a thread. It is connected to a switch valve 13, and an outer wall of one side of the shell 1 is connected to the air pump 7 by bolts. The air outlet of the air pump 7 is connected to the switch valve 13 by a hose. A slide groove 16 is opened on the outer wall of one side of the base 8, and a slider 17 is slidably connected inside the slide groove 16. The top outer wall of the shell 1 is connected to a mounting plate 14 by bolts, and a screw 15 is threadedly connected to the inside of the mounting plate 14. One end of the screw 15 is connected to the slider 17 through a bearing. A slide groove 2 is opened on the outer wall of one side of the base 8, and a slider 2 19 is slidably connected to the inside of the slide groove 28. The top outer wall of the shell 1 is connected to a mounting plate 21 by bolts, and a screw 20 is threadedly connected to the inside of the mounting plate 21. One end of the screw 20 is connected to the slider 2 19 through a bearing, and the screw 15 and the screw 2 20 are perpendicular to each other.

[0032] Specifically, in this embodiment, it includes a shell 1, a base 8 is provided on the top outer wall of the shell 1, the base 8 slides on the shell 1, a pressure plate 9 is provided on the top of the base 8, and a matching groove 22 is provided on the outer wall on the side where the pressure plate 9 and the base 8 are close to each other. A bend pipe body 10 is provided inside the matching groove 22, and the bend pipe body 10 is a stainless steel bend pipe to be tested. The top outer wall of the shell 1 is connected to the cylinder 2 by bolts, and a sealing ring 4 is fixed to one end of the output shaft of the cylinder 2. The sealing ring 4 is sleeved on one end of the bend pipe body 10, and the top outer wall of the shell 1 is connected to the cylinder 2 3 by bolts. One end of the output shaft of 3 is fixed with a blocking ring 2 5, and the blocking ring 2 5 is sleeved on the other end of the elbow body 10. The two ends of the elbow body 10 are blocked by the blocking ring 2 5 and the blocking ring 1 4. The top outer wall of the blocking ring 2 5 is connected with a pressure gauge 12 through a thread. The pressure gauge 12 is used to detect pressure data. The outer wall of one side of the blocking ring 1 4 is connected with a switch valve 13 through a thread. The outer wall of one side of the shell 1 is connected with an air pump 7 through a bolt. The air outlet of the air pump 7 is connected to the switch valve 13 through a hose. Compressed air is introduced into the interior of the elbow body 10 through the air pump 7. A slide groove is opened on the outer wall of one side of the base 8. 16, the inner sliding connection of the slide groove 16 is connected with a slider 17, the top outer wall of the housing 1 is connected with a mounting plate 14 by bolts, the inner part of the mounting plate 14 is connected with a screw 15 by a thread, one end of the screw 15 is connected with the slider 17 by a bearing, and the screw 15 is rotated so that the screw 15 can drive the base 8 to move. A slide groove 2 18 is opened on one side of the outer wall of the base 8, and the inner part of the slide groove 2 18 is connected with a slider 2 19. The top outer wall of the housing 1 is connected with a mounting plate 21 by bolts, and the inner part of the mounting plate 21 is connected with a screw 20 by a thread. One end of the screw rod 20 is connected to the slider 2 19 through a bearing. By rotating the screw rod 20, the screw rod 20 can drive the base 8 to move, so that the two ends of the elbow body 10 correspond to the sealing ring 2 5 and the sealing ring 1. The screw rod 15 and the screw 2 20 are perpendicular to each other. When the screw rod 15 and the screw 2 20 are rotated respectively, the screw rod 15 and the screw 2 20 respectively drive the base 8 to slide, so that the two ends of the elbow body 10 can correspond to the sealing ring 1 4 and the sealing ring 2 5, thereby making it more convenient to debug the elbow body 10 during air tightness testing.

[0033] The present invention provides an air tightness detection device for compression-type stainless steel pipe fittings, which respectively drives the sealing ring 1 4 and the sealing ring 2 5 to seal the two ends of the elbow body 10 through the provided cylinder 1 2 and cylinder 2 3, and fills the interior of the elbow body 10 with compressed air through the air pump 7. By observing the numerical change of the pressure gauge 12, it can be judged whether the elbow body 10 is airtight. The device has a simple detection principle and low detection cost.

[0034] In another embodiment provided by the present invention, a bottom plate 6 is provided at the bottom of the shell 1, and the top outer wall of the bottom plate 6 is connected with evenly distributed screw sleeves 28 by bolts. The bottom outer wall of the shell 1 is connected with evenly distributed adjusting screws 27 through bearings. The number of adjusting screws 27 is preferably four, and the bottom end of the adjusting screw 27 is connected to the screw sleeve 28 by a threaded connection. By rotating the adjusting screw 27, the height of the shell 1 can be adjusted. The bottom outer wall of the shell 1 is connected with evenly distributed guide sleeves 29 by bolts. The guide sleeve 29 is sleeved on the outside of the screw sleeve 28, and the guide sleeve 29 is used to prevent the adjusting screw 27 from entering dust. The top of the adjusting screw 27 extends to the interior of the shell 1 and is welded with a driven gear 30. The driven gear 30 also has four. The bottom inner wall of the shell 1 is connected with a driving gear 31 through a bearing. The driving gear 31 is connected to The driven gear 30 is engaged, and the rotation of the driving gear 31 drives the four driven gears 30 to rotate synchronously, thereby enabling the four adjusting screws 27 to rotate synchronously. The bottom outer wall of the housing 1 is connected to the motor 32 by bolts, and one end of the output shaft of the motor 32 is connected to the driving gear 31 by a key. The driving gear 31 is driven by the motor 32 to rotate, so that the driving gear 31 drives the driven gear 30 and the adjusting screw 27 to rotate, so that the height of the housing 1 can be adjusted, thereby realizing the airtightness detection device, which can be adjusted according to the height of different workers. The outer wall of the guide sleeve 29 is provided with a limiting groove 35, and the outer wall of the screw sleeve 28 is connected to the limiting block 11 by bolts. The limiting block 11 is slidably connected to the inside of the limiting groove 35, and the limiting block 11 is used to prevent the screw sleeve 28 from disengaging from the adjusting screw 27.

[0035] In another embodiment provided by the present invention, the interior of the base 8 is connected to a cylinder three 23 by bolts, and one end of the output shaft of the cylinder three 23 is hinged to the pressure plate 9 by an axis. The pressure plate 9 is driven up and down by the cylinder three 23, and the pressure plate 9 can be hinged to the output shaft of the cylinder, so that it is more convenient for the pressure plate 9 to press and fix the bent pipe body 10. The outer wall of one side of the base 8 is connected to a baffle 26 by bolts, and the baffle 26 is adapted to the pressure plate 9. The baffle 26 is used to limit the rotation of the pressure plate 9. A positioning column 24 is welded to the bottom outer wall of the pressure plate 9, and a positioning hole 25 is opened on the top outer wall of the base 8. The positioning column 24 is adapted to the positioning hole 25. The positioning column 24 is inserted into the positioning hole 25, so that the pressure plate 9 and the base 8 can press the bent pipe body 10 more firmly.

[0036] In another embodiment provided by the present invention, a mounting seat 33 is welded to the bottom outer wall of the base plate 6, and a mounting hole 34 is opened on the bottom outer wall of the mounting seat 33, which is used to facilitate bolt fixing of the mounting seat 33.

[0037] Working principle: When the height of the shell 1 needs to be adjusted, the motor 32 drives the driving gear 31 to rotate, so that the driving gear 31 drives multiple driven gears 30 to rotate, and the rotation of the driven gear 30 drives the adjusting screw 27 to rotate, so that the adjusting screw 27 drives the screw sleeve 28 to move inside the guide sleeve 29, thereby adjusting the height of the shell 1; when the air tightness of the elbow body 10 needs to be tested, the elbow body 10 is placed inside the matching groove 22, and then the pressure plate 9 is rotated so that one side of the pressure plate 9 is close to the baffle 26. At this time, the positioning column 24 at the bottom of the pressure plate 9 corresponds to the positioning hole 25 on the base 8, and the pressure plate 9 is driven downward by the cylinder three 23, so that the pressure plate 9 presses the elbow body 10, and then the screw one 15 is rotated. The screw rod 15 is rotated to drive the base 8 to move, so that one end of the elbow body 10 corresponds to the sealing ring 1 4, and then the screw rod 2 20 is rotated to drive the screw 2 20 to drive the base 8 to move, so that one end of the elbow body 10 corresponds to the sealing ring 2 5, and the sealing ring 1 4 and the sealing ring 2 5 are driven to move by the cylinder 1 2 and the cylinder 2 3 respectively, so that the sealing ring 1 4 and the sealing ring 2 5 respectively block the two ends of the elbow body 10, and then the switch valve 13 is opened, and compressed air is filled into the interior of the elbow body 10 through the air pump 7, and the value of the pressure gauge 12 is observed. When the value reaches the predetermined pressure, the switch valve 13 is closed. After a period of time, the change in the value of the pressure gauge 12 is observed to determine whether the airtightness of the elbow body 10 is good.

[0038] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A device for detecting air tightness of compression-type stainless steel pipes, characterized in that: The invention comprises a shell (1), wherein the top outer wall of the shell (1) is provided with a base (8), the top of the base (8) is provided with a pressure plate (9), the outer wall of the pressure plate (9) and the base (8) on the side close to each other is provided with a matching groove (22), the inside of the matching groove (22) is provided with a bent pipe body (10), the top outer wall of the shell (1) is connected to a cylinder (2) by bolts, one end of the output shaft of the cylinder (2) is fixed with a blocking ring (4), the blocking ring (4) is sleeved on one end of the bent pipe body (10), the top outer wall of the shell (1) is connected to a cylinder (3) by bolts, one end of the output shaft of the cylinder (3) is fixed with a A second sealing ring (5) is sleeved on the other end of the elbow body (10), the top outer wall of the second sealing ring (5) is connected to a pressure gauge (12) through a thread, the outer wall of one side of the first sealing ring (4) is connected to a switch valve (13) through a thread, the outer wall of one side of the shell (1) is connected to an air pump (7) through a bolt, the air outlet of the air pump (7) is connected to the switch valve (13) through a hose, the outer wall of one side of the base (8) is provided with a slide groove (16), the interior of the slide groove (16) is slidably connected to a slider (17), the top outer wall of the shell (1) is connected to a mounting plate (14) through a bolt, the mounting plate ( The interior of the housing (1) is connected to a screw rod (15) by a thread, one end of the screw rod (15) is connected to a slider (17) by a bearing, a slide groove (18) is provided on one side of the outer wall of the base (8), the interior of the slide groove (18) is connected to a slider (19) by sliding, the top outer wall of the housing (1) is connected to a mounting plate (21) by a bolt, the interior of the mounting plate (21) is connected to a screw rod (20) by a thread, one end of the screw rod (20) is connected to the slider (19) by a bearing, the screw rod (15) and the screw rod (20) are perpendicular to each other, the bottom of the housing (1) is provided with a bottom plate (6), the bottom plate ( The top outer wall of the housing (6) is connected to the evenly distributed screw sleeves (28) by bolts, the bottom outer wall of the housing (1) is connected to the evenly distributed adjusting screw (27) by bearings, the bottom end of the adjusting screw (27) is connected to the screw sleeve (28) by threads, the top end of the adjusting screw (27) extends to the inside of the housing (1) and is welded with a driven gear (30), the bottom inner wall of the housing (1) is connected to the driving gear (31) by bearings, the driving gear (31) is meshed with the driven gear (30), the inside of the base (8) is connected to the cylinder three (23) by bolts, and one end of the output shaft of the cylinder three (23) is hinged to the pressure plate (9) by an axis.

2. The air tightness detection device for compression-type stainless steel pipe fittings according to claim 1, characterized in that: The bottom outer wall of the housing (1) is connected to evenly distributed guide sleeves (29) via bolts, and the guide sleeves (29) are sleeved on the outside of the threaded sleeve (28).

3. The air tightness detection device for compression-type stainless steel pipe fittings according to claim 1, characterized in that: The bottom outer wall of the housing (1) is connected to a motor (32) via bolts, and one end of the output shaft of the motor (32) is connected to the driving gear (31) via a key.

4. The air tightness detection device for compression-type stainless steel pipe fittings according to claim 1, characterized in that: One side outer wall of the base (8) is connected to a baffle (26) via bolts, and the baffle (26) is adapted to the pressure plate (9).

5. The air tightness detection device for compression-type stainless steel pipe fittings according to claim 1, characterized in that: A positioning column (24) is welded to the bottom outer wall of the pressure plate (9), and a positioning hole (25) is opened on the top outer wall of the base (8), and the positioning column (24) is adapted to the positioning hole (25).

6. The air tightness detection device for compression-type stainless steel pipe fittings according to claim 2, characterized in that: The outer wall of the guide sleeve (29) is provided with a limiting groove (35), and the outer wall of the screw sleeve (28) is connected to the limiting block (11) via a bolt, and the limiting block (11) is slidably connected to the inside of the limiting groove (35).

7. The air tightness detection device for compression-type stainless steel pipe fittings according to claim 1, characterized in that: A mounting seat (33) is welded to the bottom outer wall of the bottom plate (6), and a mounting hole (34) is opened on the bottom outer wall of the mounting seat (33).

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