CN201043653Y

CN201043653Y - Rotary compensator

Info

Publication number: CN201043653Y
Application number: CNU2007200392357U
Authority: CN
Inventors: 周明刚
Original assignee: Individual
Current assignee: Zhou Zhizhong
Priority date: 2007-05-29
Filing date: 2007-05-29
Publication date: 2008-04-02
Anticipated expiration: 2017-05-29

Abstract

The utility model relates to a pipe joint, in particular to a thermal pipe displacement compensation device. According to the technology scheme, a short section is arranged on the back of a valve seat, the inner wall of the gland is provided with a groove which is provided with several rolling elements, the inner wall of the valve seat is provided with an annular lug boss shield ring, the flange holes on the valve seat connects to the flange holes on the gland by bolt and nut with springing, the back outer wall of the core tube is provided with an outer convex ring. The utility model is characterized in that a rotating location body is equipped between the lug boss shield ring and the outer convex ring, the annular wall of the lug boss shield ring opposite to the outer convex ring is provided with a curved surface inosculated to the rotating surface of the rotating location body. The utility model is convenient to get the core pipe and the valve seat concentric, and easy to align when installing washer filler, which is helpful to protect the outer surface of the core pipe and has a good sealing effect.

Description

Rotary compensator

Technical field

The utility model relates to a kind of pipe joint, especially a kind of heat distribution pipeline bit shift compensation device, specifically a kind of rotary compensator.

Background technique

Heat distribution pipeline causes axial displacement, radially sidesway and end thrust owing to carry high temperature media to cause that pipeline expands with heat and contract with cold.The compensator of general use as shown in Figure 1 now: the inwall of the outer wall of core pipe 1 and socket gland 4 matches, the inwall of gland 4 is provided with groove, place ball 2 in the cavity of bottom surface indent, with the inwall of gland 4, the boss back-up ring inwall and equipped mutually filler storehouse, the built-in ring 6 of forming of core pipe 1 of valve seat 5.The outer socket valve seat 5 of one section body of contact, be provided with packing ring filler 6 between gland 4 and valve seat 5 lower ends, gland 4 links to each other by bolt and nut device 3 with flange nose end on the valve seat 5, be provided with ball 7 in the cavity that the outer wall boss back-up ring of the inwall boss back-up ring of valve seat 5 and core pipe 1 surrounds, the bottom surface of valve seat 5 is socketed in outside the core pipe 1 for one section, core pipe 1 rear end is provided with the pipe nipple 9 of tubulose, and the positive stop 8 that inwardly is provided with on the pipe nipple 9 offsets with the aft bulkhead of core pipe 1 and cooperates.This whirl compensator shortcoming is: the concentricity that can't guarantee core pipe 1 and valve seat 5 in actual applications, when being installed, packing ring filler 6 is difficult to centering, owing to be the some contact when ball 2 contacts with core pipe 1 with ball 7, core pipe 1 suffered ball 2 is big with the pressure of ball 7, in application, be easy to destroy the outer surface of core pipe 1, and sealing effect is difficult to guarantee.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art; a kind of concentricity that can guarantee core pipe and valve seat is provided; easy centering when the packing ring filler is installed helps the outer surface of protective core pipe and the rotary compensator of good sealing effect in application.

The technological scheme that provides according to model utility, comprise and be socketed in core pipe outer gland and valve seat respectively, there is pipe nipple rear end at valve seat, inwall at gland is provided with groove, several rolling elements are arranged in groove, after extending back, the rear end of gland forms the sleeve of tubular, the boss back-up ring of annular is set at the inwall of valve seat, between the outer wall of the inwall of the valve seat of this boss back-up ring front side and core pipe, form the circular groove that the rear end that allows sleeve embeds, and the filler storehouse that seal ring is placed in formation in this circular groove, the flange hole that is arranged on the valve seat utilizes bolts and nuts to interconnect with the flange hole that is arranged on the gland, and on bolt, overlap elastic device, bulge loop outside the rear portion of core pipe outer wall is provided with, it is characterized in that: be provided with the revolution positioning body between boss back-up ring and the outer bulge loop, the boss back-up ring with outside be provided with and turn round the curved surface that the outside turning surface of positioning body matches on the relative annular wall of bulge loop.

Rolling element is a cylindrical roller.The revolution positioning body is spheroid, spheroid or cylindrical body.Elastic device is at least one belleville spring that is enclosed within on the bolt.On the inwall of pipe nipple, be provided for limiting the positive stop of the axial displacement of core pipe.

The utility model when using, the concentricity height of core pipe and valve seat, easy centering during the installation of packing ring filler helps the outer surface of protective core pipe and good sealing effect in application.

Description of drawings

Fig. 1 is existing whirl compensator structural representation.

Fig. 2 is a whirl compensator structural representation of the present utility model.

Fig. 3 is boss back-up ring of the present utility model and outer bulge loop place enlarged diagram.

Fig. 4 is the enlarged diagram of gland of the present utility model.

Fig. 5 is that the A-A of Fig. 4 is to zoomed-in view.

Fig. 6 is the enlarged diagram of gland of the present utility model and valve seat.

Embodiment

As shown in the figure: the inwall of the outer wall of core pipe 1 and gland 4 and the boss back-up ring 11 of valve seat 5 match and form the filler storehouse, fill seal ring 6 in the filler storehouse.The rear end of valve seat 5 is connected with pipe nipple 9, and positive stop 8 is set on the inwall of pipe nipple 9, and this positive stop 8 offsets with the body rear end of core pipe 1 when core pipe 1 moves to certain position backward and cooperates, and unrestrictedly moves backward to avoid the core pipe.Be provided with cylindrical roller 2 in the groove of gland 4 inwalls, the rear end of gland 4 extends back, form the sleeve 10 of tubular, the rear end of sleeve 10 embeds and is used to form in the circular groove in filler storehouse, compress and be positioned at filler storehouse inner seal ring 6, flange end on the valve seat 5 is connected with gland 4 upper flange ends, the inwall of valve seat 5 is provided with boss back-up ring 11, the outer wall of core pipe 1 is provided with outer bulge loop 12, be provided with revolution positioning body 7 between boss back-up ring 11 and the outer bulge loop 12, the curved surface that boss back-up ring 11 and the outside turning surface that outer bulge loop 12 relative ring walls were provided with and turned round positioning body 7 match, revolution positioning body 7 can be spheroid, spheroid or cylindrical body, during actual the use, the revolution positioning body 7 be preferably spheroid, flange nose end on the valve seat 5 and the flange nose end on the gland 4 interconnect with bolts and nuts 3, and on bolt the socket elastic device, described elastic device is at least 1 belleville spring 13, and roller 2 is cylindrical.

On the relative ring wall of the boss back-up ring 11 of the outer bulge loop 12 of core pipe 1 and valve seat 5, be provided with the part indent rounded channels of concentric, the sphere of this indent rounded channels and spherical revolution positioning body 7 coincide, make the spherical calotte of spherical revolution positioning body 7 just can embed in the interior concave spherical surface of outer bulge loop 12 and boss back-up ring 11, make the location ball 7 on-stream location that obtain, it is concentric to guarantee that core pipe 1 and valve seat 5 obtain, nature centering when seal ring 6 is installed.Specifically see Fig. 3.Guarantee that under the effect of the revolution positioning body 7 of sphere core pipe 1, valve seat 5 and seal ring 6 from alignment, increase spherical revolution positioning body 7 compression areas simultaneously, reduce pressure.

Become the cylindrical roller groove in gland 4 inwall Vehicle Processings, around groove plurality of rollers rotor 2 is installed, be arranged as a cylinder in order, see Fig. 4, cylindrical roller 2 nestles up core pipe 1 wall and does the guiding rotation.

Bolts and nuts 3 outer socket belleville springs 13, dish-shaped-spring stack 13 in this whirl compensator of (see figure 5) fastening piece part, can increase progressively Young's modulus at double, make the pressure stability of gland 4 by the spinning force of nut, impel seal ring 6 to be full of the filler storehouse of valve seat 5, each sealing surface of seal ring 6 is close to the required leakage face of each sealing surface of filler storehouse, sealability is perfectly safe in the running to guarantee whirl compensator, this compact structure, economical and practical.

Whirl compensator of the present utility model is installed columniform roller rotor 2 at gland 4 inwalls; increase the compression area of roller rotor 2; form core pipe 1 and in guide pulley, turn round, reach the purpose of protective core pipe 1 outer surface when not influencing running under external force again.

Belleville spring 13 adopts combining form, has increased the Young's modulus of belleville spring 13, after seal ring 6 produces the gap because of 1 running of core pipe, will be given automatic compensation by the elastic pressure of belleville spring 13, makes the gap that produces because of rotation up.

Claims

1. rotary compensator, comprise and be socketed in outer gland (4) of core pipe (1) and valve seat (5) respectively, in the rear end of valve seat (5) pipe nipple (9) is arranged, inwall at gland (4) is provided with groove, several rolling elements are arranged in groove, after extending back, the rear end of gland (4) forms the sleeve (10) of tubular, the boss back-up ring (11) of annular is set at the inwall of valve seat (5), between the outer wall of the inwall of the valve seat (5) of this boss back-up ring (11) front side and core pipe (1), form the circular groove that the rear end that allows sleeve (10) embeds, and the filler storehouse that seal ring (6) is placed in formation in this circular groove, the flange hole that is arranged on the valve seat (5) utilizes bolts and nuts (3) to interconnect with the flange hole that is arranged on the gland (4), and on bolt, overlap elastic device, bulge loop (12) outside the rear portion outer wall of core pipe (1) is provided with, it is characterized in that: be provided with revolution positioning body (7) between boss back-up ring (11) and the outer bulge loop (12), boss back-up ring (11) with outside be provided with and turn round the curved surface that the outside turning surface of positioning body (7) matches on the relative annular wall of bulge loop (12).

2. rotary compensator as claimed in claim 1 is characterized in that: rolling element is cylindrical roller (2).

3. rotary compensator as claimed in claim 1 is characterized in that: revolution positioning body (7) is spheroid, spheroid or cylindrical body.

4. rotary compensator as claimed in claim 1 is characterized in that: elastic device is at least one belleville spring (13) that is enclosed within on the bolt.

5. rotary compensator as claimed in claim 1 is characterized in that: the positive stop (8) that is provided for limiting the axial displacement of core pipe (1) on the inwall of pipe nipple (9).