Device for connecting high-pressure pipelines in narrow and small space

Abstract

The utility model discloses a device for connecting high-pressure pipelines in a narrow space, which comprises an upper half split flange and a lower half split flange which are used for connecting hard pipes, connecting screw holes are symmetrically arranged on the left side and the right side of the upper half split flange and the lower half split flange, and connecting bolts penetrate through the upper connecting screw hole and the lower connecting screw hole to connect the hard pipes. The upper half split flange and the lower half split flange are connected and fixed through the first abutting buckle and the fixing nut in a matched mode, the lower portion of each connecting screw hole in the half split flange located at the lower end is provided with an abutting buckle ring connected with the corresponding connecting screw rod, and an adjusting rod is fixed to the first abutting buckle. The high-pressure Haff flange solves the problem that the high-pressure Haff flange is unreliable in connection in a narrow space, and the problem of external leakage of a pipeline is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure pipelines, and particularly to a device for connecting high-pressure pipelines in a narrow space. Background Technique

[0002] Most of the hydraulic high-pressure pipelines of the rolling mill are arranged beside the inner frame of the rolling mill, and the space position is narrow. Especially for the CVC and bending roll hydraulic control pipelines of the rolling mill, some pipelines are almost impossible to disassemble and assemble with conventional tools after being put into production. The control system uses a high pressure, and the maximum pressure can reach 30 MPa. Therefore, after the half-coupling flange of the hydraulic pipeline is connected well, due to the fact that the bolts of the half-coupling flange do not reach the required warning force, the bolts of the half-coupling flange often become loose after being used for a period of time, resulting in the failure of the connection of the half-coupling flange and causing the leakage of hydraulic oil. Once this fault occurs, due to the narrow working space, it will cause at least more than 2 hours of fault downtime, which will have a greater impact on production and maintenance. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model provides a device for connecting high-pressure pipelines in a narrow space, which solves the problem of unreliable connection of high-pressure half-coupling flanges in a narrow space and effectively reduces the occurrence of external leakage of pipelines.

[0004] To achieve the above purpose, the utility model is realized through the following technical solutions: A device for connecting high-pressure pipelines in a narrow space includes two upper and lower half-coupling flanges for connecting hard pipes. On the left and right sides of the two upper and lower half-coupling flanges, connection screw holes are symmetrically arranged. The connection bolts pass through the upper and lower corresponding connection screw holes and cooperate with fixed nuts to connect and fix the two upper and lower half-coupling flanges. Below each connection screw hole on the lower half-coupling flange, a buckling ring connected to a connection screw rod is provided, and a detachable adjusting rod is installed on the buckling ring.

[0005] The utility model further defines the technical solution:

[0006] Preferably: One end of each buckling ring is provided with an arc-shaped groove, and the other end is provided with a fixing hole connected to the adjusting rod.

[0007] Preferably: The buckling ring is welded and fixed to the head of the connection screw rod through its arc-shaped groove end.

[0008] Preferably: On one side of each buckling ring, an adjusting cavity communicated with the fixing hole is provided, and a locking mechanism is installed in the adjusting cavity. The locking mechanism includes a locking plug, a spring and a ball. The ball is installed in the adjusting cavity, and one end of the ball abuts against the adjusting rod, the other end of the ball abuts against one end of the spring, and the other end of the spring abuts against one end of the locking plug. The spring and the ball are fixed in the adjusting cavity through the locking plug.

[0009] Preferably, a multi-stage 1 / 4 arc concave groove is provided at the lower end of the adjusting rod. Advantageous Effects

[0010] Compared with the prior art, the following advantageous effects are achieved:

[0011] (1) In the present utility model, a buckling ring is welded to the lower end of the connecting screw, the adjusting rod is installed in the fixing hole of the buckling ring, and is locked and fixed by a locking mechanism. The staff rotates the adjusting rod to replace a narrow space where the limbs such as the worker's hand cannot be inserted into the stable flange screw. The high-strength bolt with a buckling ring can be inserted into the flange hole through the adjusting rod. For the upper nut of the flange, with the aid of an extended sleeve, while tightening the bolt with the sleeve, the buckling ring abuts against the flange protruding step, which can quickly fasten the upper and lower half split flanges, improving the installation efficiency of the flange in a narrow space, effectively overcoming the problem that tools cannot be used to pre-tighten the split high-pressure flange in a narrow space, and greatly improving the reliability of fastening the split high-pressure flange.

[0012] (2) A locking mechanism is installed in the adjusting cavity of the buckling ring. An internal spring ball locking device is adopted in the buckling ring, and the locking force can be adjusted by tightening an external plug screw, so that the hexagonal adjusting rod obtains good self-locking force. At the same time, a multi-stage 1 / 4 arc concave groove is opened below the adjusting rod to match the locking beads in the buckling ring, improving the locking reliability of the adjusting rod during the blind mating use process in a narrow space;

[0013] (3) In the present utility model, by observing the abutting position of the buckling ring and the flange of the half split flange, it is possible to effectively observe whether the bolt is loose. After the bolt is tightened, the buckling ring is completely attached to the flange of the split half flange. When the buckling ring is not attached to the flange of the split half flange during the inspection process, it can be checked that the bolt is loose. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a schematic structural view of the buckling ring of the present utility model;

[0016] Figure 3 is a bottom perspective view of the present utility model;

[0017] Figure 4 is a schematic structural view of the adjusting rod of the present utility model;

[0018] Figure 5 is Figure 1 the enlarged structural view of A in Detailed Embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0020] Please refer to Figure 1 -5, a device for connecting high-pressure pipelines in a narrow space, including upper and lower half split flanges 2 for connecting a hard pipe 1. Connecting screw holes 3 are symmetrically arranged on the left and right sides of the upper and lower half split flanges, and connecting bolts 4 pass through the corresponding upper and lower connecting screw holes and cooperate with fixing nuts 5 to connect and fix the upper and lower half split flanges. A buckling ring 6 connected to a connecting screw is arranged above each connecting screw hole on the lower half split flange. An arc-shaped groove 7 is arranged at one end of each buckling ring. The arc-shaped groove end of the buckling ring is welded and fixed to the head of the connecting screw. At the same time, fixing holes 8 connected to an adjusting rod are arranged at the other end of each buckling ring;

[0021] The bottom end of the adjusting rod 9 is installed in the fixing hole in the buckling ring. An adjusting cavity communicating with the fixing hole is arranged on one side of each buckling ring. A locking mechanism for fastening the adjusting rod is installed in the adjusting cavity. The locking mechanism includes a locking plug 11, a spring 12 and a ball 10. The ball is installed in the adjusting cavity, and one end of it abuts against a multi-stage 1 / 4 arc concave groove 13 arranged at the lower end of the adjusting rod. The other end of the ball 10 abuts against one end of the spring 12. The other end of the spring abuts against one end of the locking plug 11, and the spring and the ball are fixed in the adjusting cavity through the locking plug.

[0022] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0023] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for connecting high-pressure pipelines in a narrow space, comprising upper and lower split half flanges for connecting rigid pipes, characterized in that: The upper and lower half split flanges are symmetrically provided with connecting screw holes on the left and right sides, and the upper and lower corresponding connecting screw holes are penetrated by connecting bolts, and the upper and lower half split flanges are connected and fixed by cooperating with fixing nuts. Each connecting screw hole on the lower half split flange is provided with a buckling ring connected to the connecting screw rod, and a detachable adjusting rod is installed on the buckling ring.

2. The device for connecting high-pressure pipelines in a narrow space according to claim 1, characterized in that: One end of each of the buckling rings is provided with an arc-shaped groove, and the other end is provided with a fixing hole connected to the adjusting rod.

3. The device for connecting high-pressure pipelines in a narrow space according to claim 2, characterized in that: The buckling ring is fixedly welded to the head of the connecting screw rod through its arc-shaped groove end.

4. The device for connecting high-pressure pipelines in a narrow space according to claim 3, characterized in that: An adjusting cavity communicating with the fixing hole is provided on one side of each buckling ring. A locking mechanism is installed in the adjusting cavity. The locking mechanism includes a locking plug, a spring and a ball. The ball is installed in the adjusting cavity, and one end of the ball abuts against the adjusting rod, the other end of the ball abuts against one end of the spring, the other end of the spring abuts against one end of the locking plug, and the spring and the ball are fixed in the adjusting cavity through the locking plug.

5. The device for connecting high-pressure pipelines in a narrow space according to claim 4, characterized in that: The lower end of the adjusting rod is provided with a multi-stage 1 / 4 arc concave groove.

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