KR20030066472A - Valve Sill Pipe Joint Device - Google Patents

Abstract

PURPOSE: A device for connecting a valve to a pipe having protrusions is provided to simply connect the valve to the pipe, and to prevent the leakage of water even when the pipe is shaken. CONSTITUTION: Protrusion circumferences(14,24) are formed at the end surfaces(13,23) of a pipe body(20). Grooves(12,22) are formed at the protrusion circumferences. A cylindrical packing(30) is installed between the protrusion circumference and the groove, and is coupled with a joint cover(40). Fitting grooves(11,21) have fitting protrusions(17,27) for preventing rotation, and are formed at the protrusion circumferences. Cover fitting protrusions(41,42) are formed at the joint cover, and are coupled with the fitting grooves and covers the packings.

Description

Valve Sill Pipe Joint Device

The present invention relates to a valve jaw pipe connection device used for the joint of a pipe for supplying fluid, and more particularly, it is possible to connect a pipe, an elbow, a tee, a reducer, and the like to the valve without welding, and at the same time, It relates to a valve jaw pipe connection device that can cope with changes in the length of the pipe due to temperature shocks, earthquakes, and temperature variations.

In general, the pipe connection of valves, pipes, elbows, tees, reducers, etc. is good corrosion resistance, it requires a simple construction. In particular, the pipes are made of lengths that are easy to handle because it is impossible to construct them long, and these pipes are arranged in the shape required in the field and joined by welding or the like to perform the piping. In addition, when it is necessary to change the direction of the pipe or divide the other two or more pipes, using elbows or branching tee pipes, and when used to install the valve to the pipes to supply or cut off the supply, When connecting the flanged valve to the pipe, the flange (3) of the valve by welding the flange (4) having the same dimensions as the valve flange (3) of the flanged valve (1) shown in FIG. The flange 4 is welded to the pipe and is installed by tightening the bolt 43 and the nut 44 to form a connection between the valve and the pipe.

However, when joining pipes and flanges by welding, workability is remarkably degraded, and various problems such as leakage due to corrosion of the welded joints are caused.

Particularly, water pipes and gas pipes are painted at the factory to prevent corrosion, and the coating state is damaged due to peeling of the paint layer by welding, which causes corrosion to occur on the surface of the pipe. There was a problem acting as a cause. Furthermore, this problem of corrosion causes more serious problems in hygiene such as contamination of heavy metals when it occurs in domestic water pipes used for drinking water.

In addition, the pipe is inevitably accompanied by a change in length according to the seasonal temperature change. This change in length, as well as torsional deformation due to the deviation of the pipe, as well as severely leads to breakage of the connection portion acts as a factor that causes leakage. Therefore, the pipe connection structure requires a connection structure capable of compensating for the occurrence of an earthquake including a pipe length change and an external physical shock caused by the temperature change as described above.

Therefore, in order to improve this point, the joints have been developed so as to be connected to each other by fitting the packing to the pipe end of each of the pipes, and to allow the divided joint cover to be mutually coupled to both sides of the packing. In particular, Japanese Utility Model No. 54-20018 discloses a configuration in which a deformation part such as an extension part or a projection or a groove is provided at a portion adjacent to the end of the tube to limit the tube deviation. However, such a configuration is accompanied by a change in the pipe diameter of the pipe deformed portion becomes larger or smaller, so that the vortex or the flow resistance is generated in the deformed portion has a problem that the fluid does not flow smoothly. In addition, it is revealed in the publication that the deformable parts do not substantially involve changes in the thickness of the tube body. However, since the thickness loss is inevitable during machining, the strength of the pipe connection and the locking force of the pipe are suggested. It will act as a factor that is not structurally robust. In addition, such a configuration has a structure in which the valve has a weight on one side due to the characteristic of the valve structure to the pipe connection with the valve, so there is no locking jaw to block the twisting of the pipe and the rotational movement of the pipe. I have a problem that is moved by. In addition, the packing is firmly supported by the cover, and sliding occurs between the inner surface of the packing and the outer surface of the pipe when the movement is caused by physical force and when the deviation of the pipe proceeds. It is like being a problem.

The present invention eliminates the flange of the valve and the flange connected to the pipe in order to solve these problems, it is possible to easily connect the valve and the pipe without resorting to the welding operation by configuring the locking jaw, the length of the pipe according to the temperature change It provides a valve jaw pipe connection device that accommodates changes and increases the durability and strength of the pipe and prevents leaks even when the pipe shakes.

1 is an exploded perspective view showing the configuration of an embodiment of the valve jaw pipe connection device of the present invention.

Figure 2 is a cross-sectional view of the coupled state of the valve jaw pipe connecting device embodiment of the present invention.

Figure 3 is a side cross-sectional view of the jaw pipe and joint cover engaging jaw connection state of the present invention.

Figure 4 is a cross-sectional view of the coupling state of another embodiment of the valve jaw pipe connecting device of the present invention.

5 is a cross-sectional view of a coupled state of another embodiment of the valve jaw pipe connecting device of the present invention.

6 is a state cross-sectional view of a conventional flanged valve tube connection structure.

※ Explanation of code for main part of drawing

1: flanged valve 2: pipe

3: valve flange 4: flange

10: valve body 11, 21: locking jaw groove

12, 22: projection groove 13, 23: end

14, 24: jaw outer diameter 15, 25: inner diameter

16, 26: packing jaw surface 17, 27: hanging jaw

18, 28: Packing jaw outer diameter 19, 29: Round jaw groove

20: jaw pipe body 30: packing

31: packing exterior 32, 34: protrusion

35: Packing bore 40: Joint cover

41, 42: Covering jaw 43: Bolt

44: nut 45: bolt hole

46: flange portion 47: pressing projection

48: welding area

In the conventional flanged valve and jaw pipe connection device having a fluid supply and shutoff device to solve the above problems, there is provided a valve jaw pipe connection device that enables valve and pipe connection without welding. .

In addition, to maximize the role of the locking jaw to limit the separation of the valve and the tube even in the vertical and horizontal movement and torsion of the tube, in particular, by moving the tube and the packing together to accommodate the change in the length of the tube due to temperature changes, the impact of the earthquake It is characterized by a valve jaw pipe connection device that can absorb the water and at the same time to increase the effect of blocking leakage to the movement of the pipe.

Hereinafter, the configuration of the present invention according to the accompanying drawings in detail as follows.

1 to 3 show a preferred embodiment of the valve jaw pipe connection according to the invention.

According to this there is shown a valve body 10 and a jaw pipe body 20 in which the ends of the invention are arranged to correspond to one another. The valve body 10 and the jaw pipe body 20 are free from changes in their inner diameters 15 and 25 at their respective ends 13 and 23 and are directed inwardly from their respective ends 13 and 23. A jaw outer diameter 14, 24 consisting of a jaw is formed within a range of small lengths. The jaw outer diameter includes a locking jaw (17) (27) for restricting the rotational flow of the valve body 10 and the jaw pipe body 20 in the axial direction of both ends along the outer peripheral surface of the jaw outer diameter (14, 24) The jaw grooves 11 and 21 are formed, and the projection grooves 12 and 22 are formed closer to the end side than the locking jaw grooves 11 and 21.

The outer side of the body 10, 20 is provided with a cylindrical packing 30 is formed with a projection 32, 34 is coupled to the projection groove 12, 22. It is preferable that the protrusions 32 and 34 have a semi-circular cross section to protrude two or more from the packing inner diameter 35 of the packing 30.

In addition, the outer side of the packing 30 is provided with a joint cover 40 which is divided in the radial direction or more in accordance with this division or tube size to surround the packing 30 and coupled. The joint cover 40 is formed on each side cover engaging jaw (41) 42 is coupled to the engaging jaw groove (11, 21), the pressing projection 47 protruding from the center portion of the joint cover 40 is formed It is. Each of the joint covers 40 is provided with fastening bolt holes 45 on the flange portion 46 extending radially outwardly. It may be formed in four or more.

The present invention having such a configuration inserts the valve body 10 and the jaw pipe body 20 on both sides of the packing (30). At this time, since the packing 30 is used as a material such as rubber material or silicone material having elasticity, the packing 30 extends radially outward and allows the bodies 10 and 20 to pass through the protrusions 32 and 34. Then, when the packing 30 reaches the predetermined position through the packing 30, the packing 30 is elastically restored so that the protrusions 32 and 34 are inserted into the protrusion grooves 12 and 22 to be engaged. In this state, the joint cover 40 is seated from the outside of the packing 30 so that the cover catching jaws 41 and 42 are connected to the catching jaws grooves 11 and 21 and the bolts 43 and the nuts 44 are secured. To perform the bonding. At this time, the packing 30 is compressed during the joint cover 40 coupling process, and the coupling state of the protrusions 32 and 34 and the protrusion grooves 12 and 22 is further strengthened, and the jaw outer diameter 14 and 24 of the body are reinforced. ) The inner circumferential surface of the outer circumferential surface and the packing inner diameter (35) of the packing is to maintain a tight contact state.

The present invention having such a configuration can achieve a simple connection of the valve and the pipe by the coupling of the valve and the packing pipe and the joint cover fastening without a welding operation.

In addition, when the flow of movement between the valve and the pipe by physical force, the cover engaging jaws 41 and 42 are coupled to the engaging jaws 17 and 27 and the engaging jaw grooves 11 and 21, respectively. Or it acts as a jam in the rotational movement and any twisting direction to be able to completely defend the tube escape effect.

In particular, when a change in the length of the pipe flow occurs due to temperature changes, the projections 32 and 34 are formed by the protrusion grooves 12 and 22 so that the packing 30 flows along with the flow of the pipe. 14) The packing material itself is deformed and the packing material itself is deformed at the contact surface between the two members of the packing member 24 and the packing inner diameter 35 to accommodate the change in the length of the tube, so that the close contact effect can be maintained well and the leakage blocking effect can be enhanced. have.

On the other hand, Figure 4 shows another embodiment of the valve jaw pipe connection device according to the present invention. According to this, each end 13, 23 of the valve body 10 and the jaw pipe body 20 is in a small length from the end portion to the inner side so that there is no change in the inner diameter 15, 25. The jaw outer diameter (14, 24) is formed by the configuration of the jaw, the jaw outer diameter (14, 24), the locking jaw (17) to limit the rotational flow of the valve body 10 and the jaw pipe body 20 (27) is removed, and circular jaw grooves (19, 29) made of a circle are formed. Protrusion grooves 12 and 22 are formed in the axial direction closer to the end side than the circular jaw grooves 19 and 29.

In this embodiment, since the circular jaw grooves 19 and 29 can be rotated in a circular direction according to the pipe connection structure, it is possible to increase the positioning convenience of the connection work when the product needs to be positioned.

In addition, Fig. 5 is a cross-sectional view of a combination of another embodiment of the valve jaw pipe connecting device according to the present invention according to the tube from the end so that there is no change in the inner diameter at each end of the valve body 10 and the jaw pipe body 20 The jaw outer diameters 14 and 24 are formed in the configuration of the jaws within a range of lengths smaller than the diameter toward the inner side. In the axial direction of both ends of the jaw outer diameter 14 and 24, a locking jaw groove 11 and 21 is formed, which is configured to limit the rotational flow of the valve and the pipe, and the outer peripheral surface of the jaw outer diameter 14 and 24 is formed. A packing jaw surface 16 and 26 and a packing jaw outer diameter 18 and 28 of the lower jaw restricting the flow of the packing are formed, and the protruding groove 12 is closer to the end side than the packing jaw surfaces 16 and 26. 22 is formed.

In such an embodiment, the packing jaw surfaces 16 and 26 may maintain the packing 30 more securely, thereby reinforcing the leakage strength drop in the fluid pressure to increase the leakage blocking durability of the valve jaw pipe connection device.

The pipe construction work can be easily installed by eliminating the pipe flange welding work as described above, thereby reducing the functional manpower and material costs, and also ensuring the safety of the separation by strengthening the rigidity of the pipe in the left and right movement. The role of the projection and the groove of the groove is excellent in shock resistance because it has a strong response to the impact from the outside, and has the effect of effectively blocking the leakage even in the shaking of the pipe.

Claims (3)

The end valves 13 and 23 of the conventional valve body 10 and the jaw pipe body 20 having devices for supplying and shutting off the fluid correspond to each other so that there is no change in the inner diameter, respectively. Protruding grooves 12 and 22 are formed in the jaw outer diameters 14 and 24, which are made of a jaw of a small length from the inside, and the cylindrical packing 30 comprises the jaw outer diameters 14 and 24 and the projection grooves 12. In the valve jaw pipe connecting device installed at the joint 22 and the joint cover 40, the jaw grooves composed of the locking jaws 17 and 27 restricting the rotational flow to the jaw outer diameters 14 and 24. (11) (21) is formed, the valve jaw pipe, characterized in that the cover engaging jaw (41) (42) formed in the joint cover is connected to the engaging jaw groove (11) (21) is wrapped around the packing and connected to each other Connection The valve jaw pipe connecting device of claim 1, wherein the locking jaw grooves 11 and 21 formed of the locking jaw are connected to form circular jaw grooves 19 and 29 formed of a circle. The valve jaw pipe connecting device according to claim 1, wherein the jaw outer diameters (14) and (24) constitute the packing jaw faces (16) and (26) to form the packing jaw outer diameters (18) and (28) up to the end portions thereof.