CN2702297Y

CN2702297Y - Sealing joint for plastic pipe fitting compression test

Info

Publication number: CN2702297Y
Application number: CN 200420016302
Authority: CN
Inventors: 贾来友
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-03
Filing date: 2004-06-03
Publication date: 2005-05-25
Anticipated expiration: 2014-06-03

Abstract

The utility model discloses a sealing joint for plastic pipe fitting compression test, which is designed for solving the problem of untight seal of a sealing joint of GB / T6111-2003 standard equipment in practical application. The utility model is characterized in that the utility model is formed by connecting a sealing head and a gland through screw thread, wherein the side end surface of the sealing head is provided with a sealing ring; the inner side of the lower part of the gland forms a reverse taper shape and is connected with a conical jaw; the upper end surface of the jaw is provided with a pressing ring, and the upper end surface of the pressing ring contacts the sealing ring. The joint can make the sealing ring deform along with the rotation of a turnbuckle to become more tightly with the compression, thereby, the larger the internal pressure of a test sample, the better the sealing effect of the joint, so the phenomenon of liquid leakage of the joint can not occur thoroughly. Therefore, the equipment performance is improved, the test effect is guaranteed, and the service life of the equipment is prolonged. Besides, the utility model has the advantages of easy loading and unloading, convenient use, etc.

Description

Plastic pipe, pipe fitting withstand voltage test sealing adaptor

Technical field: the utility model relates to a kind of plastic pipe, pipe fitting hydrostatic test equipment, is a kind of about the test specimen sealing adaptor in the GB/T6111-2003 code test equipment specifically.

Background technology: at present, implement FLUID TRANSPORTATION thermoplastic plastic pipe internal pressure-resistant test method, the sealing adaptor of one of its equipment mostly adopts A type or Type B version in the GB/T6111-2003 standard.Chinese patent CN2405210Y and CN2442257Y be disclosed " plastic tube withstand voltage test anchor clamps " and " plastic tube internal pressure tester sealing jig " respectively, and its structure also is the concrete utilization to the GB pattern.Comprise A type, Type B and preceding two patents in the GB, their common defects is, because the connection status of test specimen and joint side the and wherein duty of O-ring seal is unalterable, so cause poorly sealed, the liquid leakage phenomenon often takes place in the test, has so not only influenced test effect but also has shortened equipment life.

The utility model content: the purpose of this utility model is, at the problems referred to above, provides a kind of plastic pipe, pipe fitting withstand voltage test sealing adaptor, and the good seal performance of this joint in use guarantees the liquid leakage phenomenon not to take place.

Technical solution of the present utility model is: a kind of plastic pipe, pipe fitting withstand voltage test sealing adaptor, comprise end socket, gland and O-ring seal, it is characterized in that: end socket and gland adopt and are threaded, wherein, side end face at end socket is provided with O-ring seal, and the gland lower inside surface is inverted cone-shaped, and connects the tapered jaw of a rounding, establish a trim ring in the upper surface of jaw, the upper surface of trim ring touches mutually with O-ring seal.

Compared with prior art, because the utility model has changed the unalterable connection status of test specimen and joint side, adopt thread connection, particularly jaw, trim ring and jaw to connect design with the conical surface of gland, can O-ring seal be out of shape by the rotary screw button thereupon, thereby press tight more more.Can guarantee fully that so just joint the liquid leakage phenomenon can not take place, both can improve equipment performance thus, the warranty test effect can prolong serviceable life of equipment again.Advantages such as in addition, the utility model also has loading and unloading easily, and is easy to use.

Description of drawings: Fig. 1 is a structural representation of the present utility model.

Embodiment: the utility model is elaborated below in conjunction with accompanying drawing.

As shown in the figure, the plastic pipe that the utility model provides, pipe fitting withstand voltage test sealing adaptor, comprise end socket, gland and O-ring seal, it is characterized in that: end socket 1 and gland 5 adopt and are threaded, wherein be provided with O-ring seal 2 in the side end face of end socket 1, the lower inside surface of gland 5 is inverted cone-shaped, and connects the tapered jaw 4 of a rounding (this jaw 4 adopts on technology and divides body structure), establish a trim ring 3 in the upper surface of jaw 4, the upper surface of trim ring 3 touches mutually with O-ring seal 2.Evidence, the sealing effectiveness of the big more joint of interior pressure of test specimen 6 is good more.

Claims

1, a kind of plastic pipe, pipe fitting withstand voltage test sealing adaptor, comprise end socket, gland and O-ring seal, it is characterized in that: end socket (1) and gland (5) adopt and are threaded, wherein be provided with O-ring seal (2) in the side end face of end socket (1), gland (5) lower inside surface is inverted cone-shaped, and connect the tapered jaw of a rounding (4), and establish a trim ring (3) in the upper surface of jaw (4), the upper surface of trim ring (3) touches mutually with O-ring seal (2).