Modular cast iron tube of self-anchoring joint
A technology of cast iron pipes and interface balls, which is applied in the direction of pipes/pipe joints/fittings, pipes, rigid pipes, etc., and can solve problems such as complex structures, unreliable structures, and large self-anchoring force
Active Publication Date: 2011-03-23
XINXING DUCTILE IRON PIPES CO LTD
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Problems solved by technology
The first type is suitable for small-diameter cast pipes. The ellipticity of medium and large-diameter cast pipes is relatively large and the self-anchoring force required is also large. This structure is unreliable, and the anchor block will damage the cast pipe; the second structure is more complicated. , and the self-anchoring force is limited by the attachment and its structure, generally used for medium and low pressure pipelines
Method used
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[0018] As shown in the figure, a ductile iron pipe with a self-anchor interface includes a socket 1 and a socket 2 of the pipe body, an anchor ring 4 is arranged on the outer surface of the socket 2 of the pipe body, and an anchor ring 4 is provided on the inner cavity of the socket 1 of the pipe body. The outside of the ladder lip rubber ring groove is provided with interconnected anchor ring grooves and retaining ring grooves. The distance between the anchor ring 4 and the cross-section of the socket of the pipe body is set as follows: the socket end of the pipe body is inserted into the bearing of the pipe body according to a specified length. When the mouth 1 is inside, the anchor ring 4 corresponds to the anchor ring groove of the inner cavity of the socket 1 of the pipe body. A skylight-type retaining ring mounting hole 5 is arranged on the socket body at the retaining ring groove, and the length of the retaining ring mounting hole 5 is greater than or equal to The maximu...
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The invention discloses a modular cast iron tube of a self-anchoring joint and a baffle ring for installation, comprising a mouth and a socket of a tube body. An anchoring ring is arranged on the outer surface of the socket of the tube body; an anchoring annular slot and a baffle ring slot communicated with each other are arranged at the outside of a ladder-lip-shaped rubber ring slot of a mouthing inner cavity of the tube body; the distance between the anchoring ring and the cross section of the socket of the tube body corresponds to the anchoring annular slot of the mouthing inner cavity ofthe tube body when being inserted into the mouth of the tube body based on a specified length; and the mouthing body at the baffle ring slot is provided with a skylight-type baffle ring mounting holehaving a length greater than or equal to the maximum chord length of a baffle ring. The invention provides a modular cast iron tube of a self-anchoring interface improving the modular cast iron tube of high-pressure wide bore.
Description
technical field [0001] The invention relates to a ductile iron pipe, in particular to a ductile iron pipe with a self-anchor interface. Background technique [0002] At present, there are two ways to design the self-anchor force of the existing ductile iron pipe self-anchor interface: one is to embed the anchor block in the apron; the other is to use mechanical structures such as pressure flanges and bolts outside the joint to connect the pipe socket and The sockets are connected together. The first type is suitable for small-diameter cast pipes. The ovality of medium and large-diameter cast pipes is large and the self-anchor force is also large. This structure is unreliable, and the anchor block will damage the cast pipe; the second structure is more complicated. , and the self-anchoring force is limited by the attachment and its structure, and is generally used for medium and low pressure pipelines. Therefore, it is a technical problem to be solved at present to design a...
Claims
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IPC IPC(8): F16L9/02F16L37/12
Inventor 张同波李军刘志丽董建忠符坚徐军刘俊峰叶卫合闫国栋宋斌
Owner XINXING DUCTILE IRON PIPES CO LTD