CN105841886A - Sealing test tool for thin-wall tube - Google Patents

Abstract

The invention belongs to the field of thin-wall tube sealing, and relates to a sealing test tool for thin-wall tubes. The sealing test tool comprises a connecting nozzle (1), a threaded sleeve (2), an O-shaped sealing ring (3), a rubber sealing gasket (4), a polytetrafluoroethylene protective band (5), a semicircular positioning sleeve (6), a positioning guiding shaft (7), and a clamping hoop (8). The sealing test tool is delicate in concept, simple in structure, convenient for use and low in manufacture cost, and overcomes the difficulty for testing compacting sealing of thin-wall tubes.

Description

A kind of thin-wall pipe leakage test instrument

Technical field

The invention belongs to thin-wall pipe field of sealing technology, relate to a kind of thin-wall pipe leakage test work Tool.

Background technology

During the leakage test of YD type machine product air entraining pipe assembly, existing instrument cannot be expired The test pressure requirement that foot is bigger, due to the flange disc inner bore of part diameter in product component relatively Greatly, the thin-walled step that step is 1mm being connected with other part, part material is aluminium alloy, Easily produce deformation under the effect of external force, do not allow thin-wall pipe during leakage test Having any quality to affect, this means of press seals test instrument of just fighting each other proposes higher requirement.Pass through The analysis that product is careful is used two way seal the version clamped, for preventing squeezing of product Compressive strain, before test, the outside politef adhesive tape at product protects, result of the test Prove that the sealing of newly-designed thin-wall part is suppressed instrument and met the test pressure requirement of product, solve Practical difficulty.

Summary of the invention

The purpose of the present invention: propose a kind of thin-wall pipe leakage test instrument, is used for meeting thin-walled Pipe fitting bigger test pressure seal request.Solve the difficult problem that thin-wall pipe bulge test seals.

Technical scheme: a kind of thin-wall pipe leakage test instrument, including:

Spigot joint (1), thread bush (2), O RunddichtringO (3), rubber gasket (4), poly- Tetrafluoroethene buffer zone (5), semicircle positioning sleeve (6), orientation direction axle (7), clip (8)；

Front cone angle and the external screw thread (9) of spigot joint (1) coordinate airtight with bulge test device joint Being connected, external screw thread (9) six sides below are to rotate with aid to execute during suppressing Afterburning position, the external screw thread (10) of spigot joint (1) mid portion and thread bush (2) interior spiral shell Stricture of vagina (11) coordinates and is connected, the rear portion processing of the external screw thread (10) of spigot joint (1) mid portion The seal groove of mounting O-shaped sealing ring (3), the center of spigot joint (1) is had to be machined with by suppressing The through hole of medium；The center of orientation direction axle (7) is machined with and coordinates phase with spigot joint (1) rear portion Through hole even, is provided with rubber gasket in the seal groove of the outer surface of orientation direction axle (7) (4), semicircle positioning sleeve (6) is divided into identical two semicircle by by the groove (13) at center Part forms, and with thin-wall pipe leading exterior surface, politef buffer zone (5) is wound around protection, Thread bush (2) rear portion withstands on the front portion of orientation direction axle (7), in semicircle positioning sleeve (6) The front portion of step surface and the between outer land terrace clamping of thread bush (2), semicircle positioning sleeve (6) interior platform Step surface clamping outside the rear portion of terrace and thin-wall pipe, then will with clip (8) assembly Semicircle positioning sleeve (6) is fixing and clamps；Behind location clamping thread bush (2) shank flat (12) Six side's parts of spigot joint (1) are rotated until rubber blanket (4) deforms upon with spanner.

Advantages of the present invention

One end of sealing ring with o is put in product endoporus by the present invention, will examination with hoop component The instrument after thin-wall pipe and combination of testing is fixed clamping, then with the clamping of aid location Spigot joint anterior six side's parts are rotated with spanner until rubber blanket, O type seal after thread bush shank is flat Till there is compressional deformation in circle, the cone angle of the other end of instrument, screw thread and part cone on exerciser Angle, screw-internal thread fit airtight connection, require Adjustment Tests device according to the test pressure of product drawing Pressure and dielectric testing to prove that this thin-wall pipe suppresses leakage test instrument and test method full The foot test pressure requirement of product.Exquisite composition, simple in construction, easy to use, it is manufactured into This is low, solves thin-wall pipe and suppresses a difficult problem for leakage test.

Accompanying drawing illustrates:

Fig. 1 is the structural representation of the present invention.

Fig. 2 is the spigot joint structural representation of the present invention.

Fig. 3 is the structural representation of thread bush of the present invention.

Fig. 4 is the structural representation of semicircle positioning sleeve of the present invention.

Fig. 5 is the structural representation of leading axle of the present invention.

Fig. 6 is the structural representation of hoop component of the present invention.

Fig. 7 is O RunddichtringO structural representation of the present invention.

Fig. 8 is rubber sealing structure schematic diagram of the present invention.

Detailed description of the invention:

Below in conjunction with the accompanying drawings the present invention is described in further detail.

A kind of thin-wall pipe leakage test instrument, as shown in figures 1-8, including:

Spigot joint 1, thread bush 2, O RunddichtringO 3, rubber gasket 4, politef is prevented Protecting band 5, semicircle positioning sleeve 6, orientation direction axle 7, clip 8；

The front cone angle of spigot joint 1 coordinates airtight being connected with external screw thread 9 with bulge test device joint, External screw thread 9 six sides below are the portions rotating applying power during suppressing with aid Position, the external screw thread 10 of spigot joint 1 mid portion coordinates with thread bush 2 female thread 11 and is connected, connects The rear portion of the external screw thread 10 of mouth 1 mid portion is machined with the seal groove of mounting O-shaped sealing ring 3, The center of spigot joint 1 is machined with the through hole by suppressing medium；The center processing of orientation direction axle 7 Have and coordinate the through hole being connected, in the seal groove of the outer surface of orientation direction axle 7 with spigot joint 1 rear portion Being provided with rubber gasket 4, semicircle positioning sleeve 6 is by being divided into identical by the groove 13 at center Two semicircle part compositions, are wound around politef buffer zone 5 with thin-wall pipe leading exterior surface Protection, thread bush 2 rear portion withstands on the front portion of orientation direction axle 7, step in semicircle positioning sleeve 6 The front portion in face and the between outer land terrace clamping of thread bush 2, the rear portion of step surface in semicircle positioning sleeve 6 With the step surface clamping outside thin-wall pipe, then use clip 8 assembly by solid for semicircle positioning sleeve 6 Determine and clamp；Rotate six sides of spigot joint 1 with spanner after location clamping thread bush 2 shank flat 12 Part is until rubber blanket 4 deforms upon.

The protection politef buffer zone 5 first carrying out product headed by using method is wrapped in The position that product contacts with semicircle positioning sleeve 6, then to the assembling parts on instrument, O type is close Seal 3 is put in the seal groove of spigot joint 1 front end；Rubber gasket 4 loads the close of leading axle 7 Sealing groove；Spigot joint 1 and O RunddichtringO 3 form external screw thread 10 and the spiral shell in thread bush 2 of assembly Stricture of vagina 12 passes through orientation direction axle 7 and the centre bore of rubber gasket 4 assembly after being attached, Molectron is put in the endoporus of product, adjust spiral shell in spigot joint 1 external screw thread 10 and thread bush 2 Stricture of vagina 12 makes rubber gasket 4 contact with product end surface, orientation direction axle 7 and thread bush 2 end Face contacts, after the endoporus of 6 two semicircle parts of semicircle positioning sleeve and thread bush 2 and product orientation With clip 8, nut 14, the connection assembly of screw 15 is clamped.By with o after assembling One end of sealing ring is put in product endoporus, after testing thin-wall pipe and combination with hoop component Instrument be fixed clamping, then with aid location clamping thread bush shank flat 12 after Spigot joint 1 anterior six side's parts are rotated until rubber blanket 4, O RunddichtringO 3 occur to squeeze with spanner Swaging only becomes, the cone angle of the other end spigot joint 1, screw thread and the cone angle of part on exerciser, interior Threaded engagement airtight connection, requires the pressure of Adjustment Tests device according to the test pressure of product drawing And medium, test proves that this thin-wall pipe suppresses leakage test instrument and test method meets product The test pressure requirement of product, solves a sealing difficult problem for thin-wall pipe.

Claims (1)

1. a thin-wall pipe leakage test instrument, it is characterised in that including:

Spigot joint (1), thread bush (2), O RunddichtringO (3), rubber gasket (4), poly- Tetrafluoroethene buffer zone (5), semicircle positioning sleeve (6), orientation direction axle (7), clip (8)；

Front cone angle and the external screw thread (9) of spigot joint (1) coordinate airtight with bulge test device joint Being connected, external screw thread (9) six sides below are to rotate with aid to execute during suppressing Afterburning position, the external screw thread (10) of spigot joint (1) mid portion and thread bush (2) interior spiral shell Stricture of vagina (11) coordinates and is connected, the rear portion processing of the external screw thread (10) of spigot joint (1) mid portion The seal groove of mounting O-shaped sealing ring (3), the center of spigot joint (1) is had to be machined with by suppressing The through hole of medium；The center of orientation direction axle (7) is machined with and coordinates phase with spigot joint (1) rear portion Through hole even, is provided with rubber gasket in the seal groove of the outer surface of orientation direction axle (7) (4), semicircle positioning sleeve (6) is divided into identical two semicircle by by the groove (13) at center Part forms, and with thin-wall pipe leading exterior surface, politef buffer zone (5) is wound around protection, Thread bush (2) rear portion withstands on the front portion of orientation direction axle (7), in semicircle positioning sleeve (6) The front portion of step surface and the between outer land terrace clamping of thread bush (2), semicircle positioning sleeve (6) interior platform Step surface clamping outside the rear portion of terrace and thin-wall pipe, then will with clip (8) assembly Semicircle positioning sleeve (6) is fixing and clamps；Behind location clamping thread bush (2) shank flat (12) Six side's parts of spigot joint (1) are rotated until rubber blanket (4) deforms upon with spanner.