FI76155C - UPPER STANDARDING VALVE FOR SKYDDSROER I UNDERJORDSVATTENLEDNING. - Google Patents

Description

1 76155

Arrangement between underground water supply valve and protective pipe

The invention relates to an arrangement between an underground water supply valve and an associated protective pipe.

Traditionally, the protective pipe is placed in communication with an underground water supply valve. The known solutions do not take into account the problems that arise when the soil water can be affected by freezing inside the protective pipe. In some areas, strong ground acids also cause problems.

It is an object of the present invention to provide an improvement on the above problem. To achieve this, the arrangement according to the invention 10 is mainly characterized in that a seal is arranged between the protective pipe and the valve and that the protective pipe is attached to the valve. This solution achieves a tight connection between the valve and the protective pipe.

The invention also relates to a protective tube which can be used in connection with a solution. The protective tube is mainly characterized in that the protective tube comprises a shoulder or the like for the seal and means for attaching the protective tube.

The invention further relates to a valve which can be used in connection with an arrangement. The valve is mainly characterized in that the valve body comprises members which act as counter-members of the fastening.

Both the protective tube and the valve subclaims disclose preferred embodiments by which the effect of the invention can be further enhanced.

76155

The invention is illustrated in the following description, in which reference is made to the exemplary embodiments shown in the accompanying drawings. In the drawings, Fig. 1 shows a partial longitudinal section of the connection point between the protective pipe 5 and the valve, Fig. 2 shows a partial longitudinal section of the lower part of the protective pipe, Fig. 3 shows the lower part of the protective pipe according to Fig. 2 and Figures 4-6 show side view

Figure 1 shows a partial longitudinal section of the connection point between the protective pipe S and the valve V. The protective tube S, 15 in its lower part 1 has an extension part 1a which terminates in a projecting flange Ib which surrounds the lower edge of the lower part 1 of the protective tube S. An O-ring seal 2 is placed between the cover part 3 of the valve V and the expansion part 1a of the protective tube.

To make the seal waterproof, the flange Ib is fastened to the valve 3 cover 3 by a fastening bolt 4, the lower part 4a of which acts as a fastening bolt between the valve V cover 3 and the valve body 5 and the upper part 4b comprises a threaded bore 7 for the protective pipe S

Figure 2 illustrates in more detail the structure of the lower part of the protective tube, to which the actual protective tube structure is connected, e.g. by welding, as shown in Figure 1. The lower part 1 of the protective tube S has a jacket part le whose diameter is smaller than the diameter of the extension part 1a. In this case, a shoulder 8 is formed 30 at the lower end of the jacket part le. The surface of the shoulder 8 is substantially perpendicular to the longitudinal direction of the protective tube 1, whereby tightening creates a longitudinal compressive effect of the protective tube 5 on the seal 2, since the seal 2 is pressed between said shoulder 8 and valve V cover 3 as shown in Fig. 1.

The lower part 1 of the protective pipe S has at its upper end a conical constriction Id to which the actual protective pipe part is connected. In addition, the lower part of the protective tube 10 has an inner flange part le for supporting the extended mandrel K.

Figures 4-6 show a side view of different embodiments of a fastening bolt to be attached to the valve V. Figure 4 shows a fastening bolt application 15, which is also shown in Figure 1. It has a lower part 4a which, together with the shoulder 4c, tightens the valve V cover 3 and the valve body 5 together. The lower part 4a has an external thread and the valve body 5 has a bore with an internal thread. The bolt further has a cylindrical part 4d located in the recess 20 in the cover 3 as shown in Fig. 1. The upper part 4b is a hexagon with an outer cross-sectional surface on the outside, from which the bolt can be tightened in place. The upper part 4b of the bolt 4 is provided with an internal bore 7 with a thread for the fastening bolt 10 according to Fig. 1.

Figure 5 shows an alternative embodiment for the fastening bolt 5. In this solution, the lower part 5a comprises a longitudinal bore of the bolt with a thread. In this case, the valve body is provided with a threaded bolt which passes through the cover 3 and to which the fastening bolt 5, in particular the threaded bore in its lower part 5a 30, fits. Protruding from the upper part 5b of the fastening bolt 5 is a bolt 5d with an external thread, which extends through the hole 9 of the protective tube and to which a fastening nut for fastening the valve V and the protective tube 1 is fastened. Further, Figure 6 shows such a fastening bolt

Claims (8)

Arrangement between an underground water supply valve (V) and an associated stem protection pipe (1), characterized in that a seal (2) is arranged between the protection pipe (1) and the valve (V), and that the protection pipe (1) is attached to the valve (V). An arrangement according to claim 1, characterized in that it comprises a protective tube for an underground valve stem (K), a shoulder (8) or the like for a seal (2) and means (Ib, 9) for attaching the protective tube to the valve. 76155 An arrangement according to claim 2, characterized in that the shoulder (8) comprises a support surface in the transverse direction of the protective tube, which is formed at the junction of the extension part (1a) and the sheath part (Ic) of the protective tube. An arrangement according to claim 2, characterized in that the means for attaching the protective tube is a projecting flange (Ib) with one or more through-holes (9). 4 76155 An embodiment with an intermediate part 6b, d with a through-bore provided with a thread. Connected to this intermediate part 6b, d is an externally threaded bolt part 6e, the lower part 6a of which acts as a tensioner between the valve cover 3 and the vent-5 brick body 5 together with the intermediate part 6b, d shoulder 6c. Correspondingly, the upper part 6f cooperates with the nut as a fastening member of the valve V and the protective pipe 1. It is also possible to make suitable bores in the valve cover at the locations of the holes 9 in the flange part Ib, provided with an internal thread, for example by fastening the fastening bolts 4 or 10 according to Fig. 1 to these bores. and the fastening between the protective tube 1 is effected by different means. 15 The fastening bolt solutions shown in Figures 4-6 offer the advantage that in the actual installation situation, the valve body is already equipped with suitable fastening elements, so that the installation work can be carried out quickly and safely. An arrangement according to claim 1, characterized in that the valve (V) comprises members (4, 5, 6) which act as counter-members for the attachment of the protective tube. An arrangement according to claim 5, characterized in that the member (4, 5, 6) is a fastening bolt or the like of the cover (3) of the valve (V), in which a member is adapted to receive a fastening member 15 and pipe (1) to the valve (V). An arrangement according to claim 6, characterized in that the member is a bore (7) provided with an internal thread and that the fastening member is a bolt with an external thread suitable for the hole. Arrangement according to Claim 6, characterized in that the member is a projecting pin part of the fastening bolt (5, 6) provided with an external thread and in that the fastening element is a nut acting on the casing (Ib). 6 76155