CN2068635U

CN2068635U - Pipe orifice sealing fitting

Info

Publication number: CN2068635U
Application number: CN 90213514
Authority: CN
Inventors: 王福元
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-06-29
Filing date: 1990-06-29
Publication date: 1991-01-02

Abstract

The utility model relates to a flanging metal pipe orifice sealing fitting for chemical equipment. A concentric ring type offloading groove is arranged on the contact end surface of a flanging pipe orifice of a metal pipe, such as a carbon steel pipe, a stainless steel pipe, etc., and the other end of the metal pipe is provided with a welded chamfering. The utility model is used for connecting chemical equipment with pipelines. The utility model can ensure a good sealing state under the condition that a pressure is one to two times higher than a working pressure, so the utility model is safe in use. The utility model solves the long-term problems of leakage, material waste, environmental pollution, producing influence, etc. which are caused by the poor sealing effect of the chemical equipment and the pipelines. The utility model has the advantages of simple structure and low cost.

Description

Pipe orifice sealing fitting

The utility model belongs to the improvement of a kind of chemical industry equipment with metal flanging mouth of pipe jointing.

At present, metal flanging mouth of pipe jointing pattern is a lot, and in actual the use, these joints are under working pressure, because the end face contact is uneven, sealing effect is bad, often produces unnecessary seepage; In the joint of joint and equipment or pipeline, owing to do not have the weld seam chamfering, and influence welding quality, produce unnecessary cracking seepage.

The purpose of this utility model provides a kind of improved joint, and it not only can make the welding of joint and pipeline or equipment more reliable, does not ftracture, non-leakage, and has increased the sealability of surface of contact.

The purpose of this utility model is achieved in that the requirement of using according to reality, adopt the metal tube of different-diameter, flanging moulding on mould at first will make an end in contact end face of the flanging mouth of pipe smooth, leave the concentric ring type LOAD REDUCING SLOT again, the other end is processed with the welding chamfering.The cross section of LOAD REDUCING SLOT is triangular in shape semicircle or trapezoidal, preferentially selects the triangular-section for use.According to the difference of working pressure, the ring type LOAD REDUCING SLOT can be 2-4, and the centre distance between the width of groove, the degree of depth and groove and the groove can be determined according to actual needs.The size of the φ A of flanging mouth of pipe end face external diameter is as the criterion not hinder bolt to install.

According to the contact jaw face being processed with the ring type LOAD REDUCING SLOT and not having the actual test comparison of ring type LOAD REDUCING SLOT, under the working pressure of identical regulation, the ring type LOAD REDUCING SLOT is arranged, then there is not the drop seepage, what do not have the ring type LOAD REDUCING SLOT then has a drop seepage.For the connecting end of flanging ferrule joint and equipment and pipeline, the easy firm welding of weld seam of chamfering is arranged, seepage not easy to crack does not have the weld seam of chamfering to be difficult for firm welding, the easy-rupturing seepage.

The utility model is provided by following specific embodiment and accompanying drawing thereof:

Fig. 1 is a kind of concrete structure schematic representation of the utility model.

Fig. 2 is the enlarged view of Fig. 1 I portion vee gutter.

Fig. 3 is the enlarged view of Fig. 1 I portion semicircular arc groove.

Fig. 4 is the enlarged view of Fig. 1 I portion dovetail groove.

With reference to accompanying drawing 1, Stainless Steel Tube with external diameter φ 76mm, internal diameter φ 70mm, on mould, be 110mm to diameter phi A with an end flanging, the width that guarantees flanging is that central diameter φ 130mm that flange plate is installed four M12 bolts has no relations and is as the criterion, thickness is more than or equal to 2.5mm, and the exterior edge face to process smooth smooth after, reprocess annular LOAD REDUCING SLOT.The cross section of annular LOAD REDUCING SLOT is triangular in shape, and the degree of depth of groove and width are 1.5mm, and the groove of each concentric ring type LOAD REDUCING SLOT and the centre distance between the groove are 4mm.Fall behind 30 ° of angles and the equipment butt welding through smooth at the other end of Stainless Steel Tube, under 100 ℃ to 250 ℃ water vapors, all do not produce seepage up to 25 test pressures by 3,6.

Flanging ferrule joint, simple in structure, safe and reliable, be applicable to industry equipment such as oil, chemical industry, light industry, rubber and plastic, pharmacy and pipeline, it can solve existing equipment effectively, pipeline is bad because of mouth of pipe welding, airtight quality, and the seepage that causes, waste material, befouling environment, influences problem such as production.

Claims

1, a kind of metal flanging ferrule joint is characterized in that having the concentric ring type LOAD REDUCING SLOT on the outer turned welt contact jaw face of an end, and the other end is processed with the welding chamfering.

2, flanging ferrule joint according to claim 1, the cross section that it is characterized in that the concentric ring type LOAD REDUCING SLOT is that triangle is semicircle or trapezoidal, preferentially selects the triangular-section for use.