WO2004092635A1

WO2004092635A1 - The connecting structure between a pipe and a valve or a pump and the connection method thereof

Info

Publication number: WO2004092635A1
Application number: PCT/CN2004/000369
Authority: WO
Inventors: Wenyu Ge
Original assignee: Wenyu Ge
Priority date: 2003-04-18
Filing date: 2004-04-16
Publication date: 2004-10-28
Also published as: CN2643126Y

Abstract

The present invention relates to a connecting structure and a connection method for connecting pipes to a wide variety of valves or pumps. The invention provides a flexible-socket-joint-structure to achieve sealing between pipes and valves or pumps by means'of a sealing element. The structure comprises a bodyinterface of the valve or pump, clip flange pieces, a gasket, a sealing ring, clip bolts , and flange bolts. Said clip flange pieces are clamped on one end of a pipe by said clip bolts, thereafter the gasket and the sealing ring are placed sequentially on said end of the pipe, and then said end of the pipe is inserted into a cavity of said body-interface of said valve or pump. Said sealing ring is embedded in the tapered rabbet of the body-interface of said valve or pump, a flange of said bodyinterface and said clip flange pieces are provided with bolt holes into which said flange bolts are inserted. The connecting structure and the connection method may result in easy and convenient operation, no need for site welding and operating tools, time and work saving, high efficiency, short installation time, low cost5 high fabrication quality, and no leakage connection , such that the safe operation of the whole piping system is ensured.

Description

Connection structure of valve or pump and pipeline and connection method thereof

The present invention relates to a connection structure and a connection method of an gangway or a pump to a pipeline in the field of mechanical engineering, and in particular to a method that can overcome the existence of various valves or pumps in a connection structure to a pipeline and a connection method thereof " "Run, run, drip, leak" defects, so that valves or pumps in various pipelines that transport gas and liquid will not leak at the junction with the pipe, causing problems such as environmental pollution or explosion accidents, which can ensure the overall safety of the pipeline The connection structure of the valve or the pump and the pipeline and the connection method thereof can be operated quickly, and the operation tube is simple and quick, improves the work efficiency, reduces the cost, and can achieve a high construction qualification rate. Background technique

In the past hundred years, the connection structure and connection method of the valve or pump to pipeline interface in the world mainly includes the following two connection structures and connection methods: One is a small-sized valve or pump with a diameter of less than φ 50, mostly Threaded connection ₅ First, one end of the pipe is threaded, and tape is wound around, and then a valve or a pump is set on the thread of the pipe. This connection structure and connection method will cause the valve or pump connection interface to swell and rupture when it is accidentally screwed, which will cause the gate or pump to be scrapped, which will cause great waste and inconvenience to users or manufacturers. Therefore, this connection structure and connection method appear to be quite impractical in use.

Another type of connection structure and connection method for the interface of a valve or a pump with a pipeline is for a connection structure of a valve or a pump with a diameter of φ 50 or more, which is mostly connected by a flange. The pipe is first processed Thread, then screw it into the flange, or weld the pipe directly to the flange, and then connect the flange with the corresponding flange on the valve or pump body by bolts, between the two flanges Rubber pads and asbestos pads should also be installed to achieve the connection sealing between flanges.

The above two wide-door or pump-pipe interface connection structures and connection methods not only have the disadvantages of complicated construction, but also have the disadvantages of "run, run, drip, leak, etc.", often affecting the user's use, but also Will cause environmental pollution or waste of resources.

It can be seen that the structure and use of the existing valve or pump-to-pipe connection structure and connection method of Shangmi still obviously have inconveniences and defects, and further improvement is urgently needed. In order to solve the problems of the connection structure of the valve or the pump and the pipeline and the connection method, the relevant manufacturers have made every effort to find a solution, but for a long time no applicable design has been developed and the general products have not been suitable. The structure can solve the above problems, which is obviously a problem that the relevant industry is anxious to solve.

In view of the shortcomings of the existing valve or pump and pipeline connection structure and connection method described above, the inventor is based on many years of rich practical experience and professional knowledge in the design and manufacture of such products. Knowledge, and in conjunction with the application of science, actively research and innovate, with a view to creating a new valve or pump and pipeline connection structure and connection method, which can improve the existing existing valve or pump and pipeline connection structure and connection method To make it more practical. After continuous research and design, and repeated trial and error samples and modifications, the invention with practical value has finally been created. Summary of the invention

The main object of the present invention is to overcome the shortcomings of the existing valve or pump and pipeline connection structure and its connection method, and provide a new valve or pump and pipeline connection structure and its connection method. The technology to be solved The problem is that it can overcome the defects of "running, running, dripping, leaking" in the existing connection structures and methods of various valves or pumps with pipelines, and make various pipelines that transport gas and liquid Valves or pumps will no longer leak at the joints with pipes, causing problems such as environmental pollution or explosion accidents, which can ensure the safe operation of the pipeline as a whole, and can be installed without welding, without construction and installation equipment, and has a very simple, fast, and convenient operation. It saves labor, time and labor, improves work efficiency, shortens construction period, reduces project cost, and can reach a construction qualification rate of 100%, so it is more suitable for practical use and has industrial utilization value.

The object of the present invention and the solution of its technical problems are achieved by using the following technical solutions. According to the present invention, a valve or pump and pipeline connection structure is provided, which is provided with a flexible socket connection structure that realizes sealing between the valve or pump and pipeline through a seal ring; the above-mentioned flexible socket connection structure includes a valve or Pump body interface, buckle flange, gasket, seal ring, tightening bolt, and flange bolt; the buckle flange is clamped on the end of the pipe with the tightening bolt, and then the gasket The sealing ring is sequentially set on the end of the pipe, and the end of the pipe is inserted into the cavity of the interface of the valve or the pump body; the above-mentioned sealing ring is embedded in the conical stop of the valve or pump. The flange of the valve or pump body interface and the buckle flange plate are provided with bolt holes, and flange bolts are installed in the holes.

The objective of the present invention and its technical problems can be further achieved by using the following technical measures. The aforementioned valve or pump and pipeline connection structure, wherein the body interface of the valve or pump is cavity-shaped, the inside of the interface end is provided with a tapered stop, and the outside of the interface is provided with a connection flange. Bolt holes are provided on the flange.

The aforementioned valve or pump and pipeline connection structure, wherein the buckle flange plate is composed of two or more pieces, which are combined to form a whole ring, and the inner side is provided with a plurality of embedded teeth or teeth. Nails, or inlaid materials with strong friction, a connecting flange is provided on the outer side of the connecting flange, bolt holes are provided on the connecting flange, and connecting fins are provided at both ends of each buckle flange, the The fin is provided with a clamp bolt hole, and the clamp bolt is installed in the hole.

In the foregoing valve or pump and pipeline connection structure, the seal ring is circular, and its cross section may be a right-angle trapezoid, rectangle, circle, or ellipse, and the seal ring is made of a flexible non-metal material. The aforementioned valve or pump and pipeline connection structure, wherein the gasket is installed between the buckle flange and the seal ring, and the cross-sectional shape is rectangular or circular, and the gasket is made of metal material.

The aforementioned valve or pump and pipeline connection structure, wherein a flange bolt of the valve or pump body interface and the buckle flange piece is fastened to the two.

The object of the present invention and its technical problems are also achieved by the following technical solutions. According to the present invention, a connection method using the above-mentioned valve or pump and pipeline connection structure includes the following steps: firstly, a flexible socket connection structure for sealing between the valve or the pump and the pipeline through a seal ring is provided; The flexible socket connection structure includes a valve or pump body interface, a buckle flange, a washer, a seal ring clamp bolt, and a flange bolt; the above-mentioned buckle flange is clamped on one end of the pipe with the clamp bolt, Then a gasket and a sealing ring are sequentially set on the end of the tube, and the end of the tube is inserted into the cavity of the valve or pump body interface; the above-mentioned sealing ring is embedded in the conical stop of the valve or pump body interface Bolt holes are provided on the flange plate and the buckle flange piece of the valve or pump body interface, and the flange bolts are installed in the holes.

The objective of the present invention and its technical problems can be further achieved by using the following technical measures. In the foregoing method for connecting a valve or a pump to a pipeline, the body interface of the valve or pump is cavity-shaped, a tapered stopper is provided on the inner side of the interface end, and a connection flange is provided on the outer side of the interface. Bolt holes are provided on the flange.

The aforementioned method for connecting a valve or a pump to a pipeline, wherein the buckle flange is composed of two or more pieces, which are combined to form a whole ring, and a plurality of embedded teeth or teeth are provided on the inner side of the flange. Nail, or inlaid with strong friction material, a connecting flange is provided on the outer side of the connecting flange, bolt holes are provided on the connecting flange, and two ends of each buckle flange are provided with connecting fins, the The fin is provided with a clamp bolt hole, and the clamp bolt is installed in the hole.

In the aforementioned method for connecting a valve or a pump to a pipeline, the seal ring is circular, and its cross section may be a right-angle trapezoid, rectangle, circle, or ellipse, and the seal ring is made of a flexible non-metal material.

In the foregoing method for connecting a valve or a pump to a pipeline, the gasket is installed between the buckle flange and the sealing ring, and the cross-sectional shape is rectangular or circular. The gasket is made of a metal material.

In the foregoing method for connecting a valve or a pump to a pipeline, a flange bolt is provided on the body interface of the valve or pump and the flange plate of the buckle to fasten the two.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. It is completely free from the defects of the existing valve or pump and pipeline connection structure and connection method when used, and can make the structure of the present invention more stable. And suitable for practical use, the advantages of the present invention are specifically described as follows:

In the prior art, valves or pumps and pipes in small diameter pipes are mostly connected by threads. For the connection structure and connection method, firstly thread the one end of the pipe, then wind the tape, and then screw the valve or pump to the pipe. The disadvantages of this connection structure and connection method are easy leakage, complicated construction, and high damage rate of the valve or pump during construction, especially for cast iron valves or pumps. The aforementioned defects are more obvious. The existing connection structure and connection method of valves or pumps and pipes in large-diameter pipelines are mostly connected by flanges. This connection structure and connection method must first weld the pipe to a flange, especially In medium and high pressure pipelines, the welding between the pipe and the flange must be repeated several times. Each time, an X-ray flaw detector must be used to check whether any slag and pores remain in the weld. Such a connection structure and a connection method not only have complicated construction operations, but also cannot guarantee that each interface portion is not leak-proof.

In view of the above-mentioned common defects of the existing valve or pump in the connection method with pipelines, the present inventor summarizes many years of practical experience in pipeline professional work, and after years of repeated research and innovation, repeated design and test, and samples After repeated various physical performance tests and engineering simulation tests, the present invention was successfully designed, which completely changed the traditional connection structure and connection method of valves or pumps and pipes existing for many years.

In order to achieve the foregoing object of the present invention and overcome the above-mentioned shortcomings, the present invention provides a connection structure of a valve or a pump and a pipeline and a connection method thereof. The clamp bolt combines two or more buckle flanges and positions the clamp on the pipe. At the end, the gasket and the sealing ring are next to the buckle flange and are also sleeved on the pipe end in sequence. Insert the pipe end into the valve or pump body interface, and the seal ring is embedded in the valve or pump body interface. In the tapered stop of the cone, tighten the flange bolts to achieve a fixed connection. The structure and function of the invention have better advancement and practicability, which makes the connection structure and connection method of valve or pump and pipeline more simple and quick, saves labor and time, and guarantees quality without leakage. It can effectively improve the stability and reliability of its overall structure in use, and can achieve the best use effect in practical applications.

In summary, the connection structure and connection method of the valve or pump of the special structure and the pipeline of the present invention can overcome the existing “running, "Dropping, dripping, leaking" defects, so that valves or pumps in various pipelines that transport gas and liquid will not leak at the joints with the pipes, causing environmental pollution or explosion accidents, and can ensure the safe operation of the entire pipeline. It can realize that no welding or installation equipment is needed during installation, and the operation is very simple and fast, convenient and labor-saving, labor-saving, time-saving, improving work efficiency, shortening the construction period, reducing the construction cost, and can reach a 100% construction qualification rate. It has many of the above advantages and practical values, and it is indeed an innovation that no similar structural design and method have been publicly published or used in the same connection structure and connection method. It is innovative in connection structure, connection method, or function. Both have been greatly improved, have made great progress in technology, have produced useful and practical effects, and have a number of improved functions over the existing valve or pump and pipeline connection structure and connection method. Therefore, it is more suitable for practical use, and has extensive industrial use value. It is a new, progressive, and practical new design. The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and can be implemented in accordance with the contents of the description, the following describes in detail the preferred embodiments of the present invention in conjunction with the drawings as follows.

Specific embodiments of the present invention are given in detail by the following examples and their drawings. Brief description of the drawings

FIG. 1 is a schematic structural diagram of a connection structure of a valve and a pipeline and a connection method thereof according to the present invention. FIG. 2 is a schematic structural diagram of a connection structure of a pump and a pipeline and a connection method thereof according to the present invention. FIG. 3 is a schematic diagram of the P direction in FIG. 1 and FIG. 2.

1…… valve or pump body connection 2 ...… buckle flange

3 ...… gasket 4…… seal ring

5 ...… bolt bolt 6…… flange bolt

7 ...… pipe 11 ...… conical stop

12 ...… flange 13 ...… flange bolt holes

21 ...… tooth teeth 22 ...… connecting flange

23 ...… bolt holes 24 ...… connecting fins

25 ...… bolt holes 41 ...… right angle trapezoidal surface The best way to realize the invention

In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose of the present invention, the following specifically describes the connection structure of the valve or pump and pipeline and the connection method thereof according to the present invention with reference to the drawings and preferred embodiments. The method, connection structure, connection method, characteristics and its effects are described in detail later.

Please refer to FIG. 1, FIG. 2, and FIG. 3. The connection structure of the valve or pump and pipeline and the connection method thereof according to the present invention mainly include a valve or pump body interface 1, a buckle flange 1, a gasket 3, and a seal. Ring 4, clamp bolt 5, and flange bolt 6. The buckle flange 2 is clamped on the end of the pipe 7 with the tightening bolt 5, and then the gasket 3 and the sealing ring 4 are sequentially set on the end of the pipe 7, and the end of the pipe 7 is inserted into the valve Or in the cavity of the pump body interface 1. The above-mentioned sealing ring 4 is embedded in the conical stop 11 of the valve or the pump body connection 1. The above-mentioned flange 12 of the valve or pump body interface 1 and the buckle flange piece 2 are provided with bolt holes 13, 23, and the bolt holes 13, 23 are provided with flange bolts 6 for fastening connection.

The above-mentioned valve or pump body interface 1 is in a hollow state, and the inner diameter of the valve or pump body interface 1 is slightly larger than the outer diameters of various pipes 7 to be received. The valve or pump body interface 1 is provided on both sides of the valve or pump body, and the inside of the end of each interface is provided with a tapered stop 11 and the outside of the end is provided with a connecting flange 12 which is provided on the flange 12 There are flange bolt holes 13.

The above-mentioned buckle flange 2 can be divided into two pieces according to the diameter of the pipe to which it is connected. A plurality of pieces are combined to form a whole ring, and the inner side of each buckle flange piece 2 is provided with embedded teeth or nails 21. 'The outer side of the buckle flange 2 is provided with a connection flange 22, and the connection flange 22 is provided with a bolt hole 23. The diameter and number of the bolt holes 23 are the same as the bolt holes 13 on the flange 12 of the valve or pump body interface 1. The flange bolts 6 and the valve or pump body interface 1 are connected and fixed by flange bolts 6. Each end of each buckle flange 2 is provided with a connecting fin 24, which is provided with a clamp bolt hole 25, and several buckle flanges 2 are connected by a clamp bolt 5 Round ^. The buckle flange 2 is made of a metal material, and can also be made of a high-strength non-metal material.

The pad 3 is made of a metal material, and its cross-sectional shape is rectangular or circular. The washer 3 is installed between the buckle flange 2 and the seal ring 4 to protect the seal ring 4 and transmit the axial thrust of the buckle flange 2 to the seal ring 4.

The above-mentioned sealing ring 4 is a circular ring, and one side of the cross-section is a right-angle trapezoidal surface 41. The cross-sectional shape of the sealing ring 4 may also be circular or elliptical, and it is just embedded in the valve or pump body interface 1 In the conical stop 11. The seal ring 4 is made of a flexible non-metal material.

The inner and outer surfaces of all metallic materials in the connecting piece of the present invention need to be anticorrosive.

During installation, firstly assemble and connect several buckle flanges 2 with clamp bolts 5 and hold the clamp tightly at one end of the pipe 7, next to the buckle flange 2 and sequentially place the gasket 3 and seal ring 4 is also sleeved on the end of the pipe 7, and the pipe 7 is inserted into the cavity of the valve or the pump body interface 1, and the flange bolt 6 is used to connect the flange plate 2 and the flange of the valve or the pump body interface 1 The discs 12 are connected, and the flange bolts are tightened one by one to achieve the installation of the overall structure.

The technical innovation of the connection structure of the valve or pump and pipeline of the present invention and the connection method constituted by the above-mentioned structure has many merits for those skilled in the industry today, and it does have technical advancement.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as above with the preferred embodiments, they are not intended to limit the present invention. Technical personnel, without departing from the scope of the technical solution of the present invention, can use the disclosed technical content to make a few changes or modify the equivalent embodiment of equivalent changes, as long as it does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes, and modifications made to the foregoing embodiments by the technical essence of the invention still fall within the scope of the technical solution of the present invention. Industrial applicability

The connection structure of the valve or pump and pipeline and the connection method of the present invention have at least the following advantages: 1. The present invention does not require construction tools and equipment such as electric welders and reamers during construction, which saves equipment costs and equipment operation Costs and maintenance costs, which can significantly reduce costs and improve economic efficiency. 2. The technology of the present invention is fast in construction and installation, and is especially applicable to the installation of valves or pumps in large-scale pipeline engineering. For the connection of large valves or pumps with a diameter of Φ 800mm or more to the pipeline, only 2 workers are needed, and the connection to the pipeline interface can be completed in 20 to 30 minutes. The installation cost is good, and the connection quality is good, which can ensure that one is not leaked, and it is not leaked for 50 years, which is more suitable for practical use.

3. Therefore, the valve or pump and pipeline connection structure and connection method of the present invention require no welding or construction equipment at the construction site, and the installation operation is very simple and fast, which improves the work efficiency, shortens the construction period, reduces the construction cost, and can guarantee 100%. % Construction intact rate, realize leak-free connection, and can ensure the safe operation of the entire pipeline.

The invention can overcome the defects of "running, running, dripping, leaking" in the existing connection structure of various valves or pumps to the pipeline and the connection method thereof, and enables various valves in pipelines for transporting gas and liquid. Or the pump will no longer leak at the connection point with the pipe to cause environmental pollution or explosion accidents, which can ensure the overall safe operation of the pipeline, and the operation of the tube is simple and fast, improve work efficiency, reduce costs, and can reach a 100% construction qualification rate . It has many of the above advantages and practical values, is more suitable for practical use, and has extensive industrial use value.

Claims

Rights request

1. A connection structure between a valve or a pump and a pipeline, which is characterized by:

It is provided with a flexible socket connection structure that realizes a seal between a valve or a pump and a pipeline through a seal ring;

The above flexible socket connection structure includes a valve or pump body interface (1), a buckle flange (2), a washer (3), a seal ring (4), a clamp bolt (5), and a flange bolt ( 6);

The aforementioned buckle flange piece (2) is hooped on one end of the pipe (7) with a tightening bolt (5), and then the gasket (3) and the seal ring (4) are sequentially placed on the pipe ( 7) the end, the end of the tube (7) is inserted into the cavity of the valve or the pump body interface (1);

The above-mentioned sealing ring (4) is embedded in the conical stop (11) in the valve or pump body connection (1).

2. The connection structure of a valve or pump and pipeline according to claim 1, characterized in that the body interface (1) of the valve or pump is hollow, and the inside of the end of the interface is provided with a tapered stop. (11), a connecting flange (12) is provided on the outside of the interface, and a bolt hole (13) is provided on the connecting flange (12).

3. The connection structure of a valve or pump and pipeline according to claim 1, characterized in that the buckle flange piece (2) is composed of two or more pieces, which form a whole ring after being combined. The inner side is provided with a plurality of embedded teeth or nails (21), or a material with strong friction is attached, and the outer side is provided with a connection flange (22), on the connection flange (22) Bolt holes (23) are provided, and two ends of each buckle flange (2) are provided with connecting fins (24). The fins (24) are provided with tightening bolt holes (25), tightening bolts (5) Installed in the hole.

4. The valve or pump-to-pipe connection structure according to claim 1, wherein the seal ring (4) is circular, and its cross section can be a right-angled trapezoid, rectangle, circle, or ellipse The sealing ring (4) is made of flexible non-metallic material.

5. The valve or pump-to-pipe connection structure according to claim 1, characterized in that the gasket (3) is installed between the buckle flange (2) and the seal ring (4), The cross-sectional shape is rectangular or circular, and the pad (3) is made of a metal material.

6. The connection structure of a valve or pump and pipeline according to claim 1, characterized in that the body interface (1) of the valve or pump and the flange plate (2) of the buckle are installed with the two Fasten the flange bolts (6).

7. A method for connecting a valve or a pump to a pipeline connection structure according to claim 1, characterized in that it comprises the following steps:

First, a flexible socket connection structure for sealing between a valve or a pump and a pipeline through a seal ring is provided; the above-mentioned flexible socket connection structure includes a valve or pump body interface (1), a buckle flange (2), and a gasket (3), sealing ring (4), tightening bolt (5), and flange bolt (6); Clamp the above-mentioned buckle flange piece (2) on the end of the pipe ( ⁷ ) with the tightening bolt (5), and then place the gasket (3) and the sealing ring (4) on the end of the pipe (7) in order. The end of the tube ( ⁷ ) is inserted into the cavity of the valve or the pump body interface (1);

Insert the above-mentioned sealing ring (4) into the conical stop (11) in the valve or pump body interface (1), and the flange plate and the buckle flange piece on the valve or pump body interface are both A bolt hole is provided, and the flange bolt is installed in the hole.

8. The method for connecting a valve or a pump to a pipeline according to claim 1, characterized in that the body interface (1) of the valve or pump is cavity-shaped, and a tapered stopper is provided inside the end of the interface. (11), which is connected to the outer flange with the interface (I ^2), the connecting flange (I ²⁾ is provided with bolt holes (13).

9. The method for connecting a valve or a pump to a pipeline according to claim 1, characterized in that the buckle flange piece (2) is composed of two or more pieces, which form a whole ring after being combined. The inner side is provided with a plurality of embedded teeth or teeth (21), or a material with strong friction is attached, and the outer side is provided with a connecting flange (22), and the connecting flange (22) Bolt holes (23) are provided, and two ends of each buckle flange (2) are provided with connecting fins (24), and the fins (24) are provided with tightening bolt holes (25), tightening bolts (5) Installed in the hole.

10. The method for connecting a valve or a pump to a pipeline according to claim 1, characterized in that said seal ring (4) is circular _{5 and} its cross section can be a right-angle trapezoid, rectangle, circle or ellipse, The sealing ring (4) is made of a flexible non-metallic material.

11. The method for connecting a valve or a pump to a pipeline according to claim 1, characterized in that the gasket (3) is installed and installed between the buckle flange (2) and the sealing ring (4), The sectional shape is rectangular or circular, and the washer (3) is made of a metal material.

12. The method for connecting a valve or a pump to a pipeline according to claim 1, characterized in that the valve or pump body interface (1) and the buckle flange (2) are provided with the two Fasten the flange bolts (6).