CN2211516Y - Sealer for pipe propulsion connecting ring - Google Patents

Abstract

The utility model relates to a sealing device for push pipe connecting rings, which is used for underground pipeline construction. The utility model is characterized in that the sealing device for push pipe connecting rings comprises a detachable flange-shaped sealing seat disk; after an arc-shaped pressing plate, a sealing ring and an adjusting bolt are sheathed on a flange body which is extended out of the bottom surface of the sealing seat disk, the sealing seat disk is fixed on the ring body of a connecting ring by fixing bolts. The utility model has the advantages of simple structure, convenient construction and good sealing performance. The sealing ring can be changed under the ordinary pressure, and the utility model permits a large angle rotation range for push pipes. Therefore, when the utility model is used, the axial lines of pipes can be pushed into arc lines according to the design requirements. The utility model can be used for the push pipes of the steel pipes as well as the concrete push pipes.

Description

Sealer for pipe propulsion connecting ring

The utility model relates under ground piping, belongs to the push pipe relay ring of using in a kind of under ground piping jacking construction.

Along with science and technology and rapid development of economy, lays under ground piping and adopt construction by pipeline jacking method more and more, and the diameter of pipeline is increasing, the distance more and more longer, and have also will be along the camber line jacking.Existing length apart from the steel pipe push pipe in, the relay ring structure that is adopted is that annular girder respectively is set one on forward and backward pipeline section, between the annular girder of front and back tens of oil cylinders are installed, in the annular girder periphery steel sheath pipe that fuses with preceding annular girder is arranged, other has two road O-ring seals to be mounted on this steel sheath pipe.Along with stretching of oil cylinder, the steel sheath pipe is together with seal ring slippage on the periphery of back annular girder.The seal arrangement of relay ring is for stoping the outer mud of pipe, water to move in pipe.After whole pipe is constructed end completely, the annular girder of relay ring is cut off, and the front and back pipeline section is welded into one, pipeline recovers former design latus rectum.Steel pipe push pipe relay ring so, because of its seal ring is mounted on the steel sheath pipe, the compressibility of seal ring is difficult to control, and can not adjust, if in the sandy soil layer push pipe, the wearing and tearing of seal ring are very fast, and the seal ring of this build-in is difficult to change, as changing, must under air pressure, could change, and can only change one; In addition, the relay ring with this sealing configuration makes the technological requirement of jacking construction improve, and requires conduit axis that bigger bending can not be arranged.Existing length apart from concrete ceiling coil in, the two ends of concrete pipe all must be special, joint at two pipelines, the special tube section ends of rear pipeline is given and is shaped on a groove that can bury seal ring, give and be embedded with a relay ring packing holder, also has a steel sheath pipe that fuses with it on the periphery of the place ahead pipeline section, and socket-connect with the special pipeline section of rear pipeline, one circle arc pressuring plate of seal ring and radial regulation seal ring thereof is installed on this groove, and the groove rear also is provided with the adjusting bolt of a top arc pressuring plate; Tens of oil cylinders are installed between the tube wall of the two sections special pipeline sections in front and back.The advantage of this concrete ceiling coil relay ring seal arrangement is, the seal ring compressibility can be regulated, but the concrete pipe segment process complexity of special facture, the cost height, quality also is not easy control, and o-ring groove waters in the wings on the pipeline section, changes difficulty behind the ring wear, must could change under air pressure as changing, operation is comparatively complicated.

The purpose of this utility model is for a kind of both can regulate are provided, the seal arrangement of dismountable again push pipe relay ring, make the compressibility of its seal ring adjustable, to guarantee the sealability of relay ring, and can change seal ring easily, also can allow push pipe can have certain corner, to satisfy the needs of ultra long haul push pipe or curve push pipe.

Realize the utility model of above-mentioned purpose, include fixedly ring body, seal ring, arc pressuring plate and adjusting bolt on the fixedly connected pipeline section in the wings, the design's characteristics are also to include a dismountable ring packing attic base, this ring packing attic base is the flange dish type, extend a body flange on the bottom surface of dish, card is provided with the through hole that a circle passes through for connecting bolt; Said arc pressuring plate is arranged on the outside of body flange of sealing attic base, regulates behind the wall thickness that bolt radially screwed togather and passed body flange to head on arc pressuring plate, and seal ring then is nested with on the periphery of arc pressuring plate; This ring packing attic base that arc pressuring plate, seal ring and adjusting bolt be housed is fixed on fixedly on the ring body with fixing bolt.

Be the connection sealability of guaranteeing long push pipe or convenient for maintaining, replacing seal ring, the design also can add one group of seal arrangement identical with said structure, be that the design can also have the ring packing attic base that is equipped with arc pressuring plate, seal ring on two, three multiple-sealed its body flanges of formation and radially screws togather the adjusting bolt, back one ring packing attic base is fixed on the last ring packing attic base with fixing bolt.

Therefore, the utility model has the advantages that simple in structure, produce, constructing operation is all very convenient, as long as turn fixing bolt, just can load onto the ring packing attic base that is equipped with arc pressuring plate, seal ring and adjusting bolt or pull down easily, and the adjusting bolt that turn radially is provided with, can the jacking arc pressuring plate and the seal ring turgor pressure on the inner circle wall of steel sheath pipe, good seal performance.For relay ring with two groups of seal arrangements, seal arrangement that can be when doing overhaul near a black box of fixing ring body is (this seal ring roof pressure at steel sheath Guan Shanghou, with regard to dismountable away from fixing another seal ring of ring body), away from a black box of fixing ring body as the working seal device, see thus, the utility model if the transposing seal ring, under normal pressure, can carry out.If situation is special, also can use two sealings as the working seal assembly simultaneously.In addition, this relay ring allows tube's axis that bigger corner is arranged, and can be by designing requirement top camber pipeline.

For adapting to the characteristics of push pipe in the sandy soil, the utility model can be provided with the mud jacking hole of a pressure injection thixotropic slurry on the rear pipeline section near fixing ring body, so that when push pipe uses the utility model in sandy soil, being full of thixotropic slurry all the time between relay ring and steel sheath pipe inner circle wall, stop in the extraneous silt intake channel, simultaneously, thixotropic slurry plays lubrication again.The utility model is applicable to the steel pipe push pipe, also is applicable to the concrete push pipe.

Embodiment of the present utility model as shown in drawings.

Description of drawings:

Fig. 1 is an A-A cross-section cutaway view of the present utility model;

Fig. 2 is a side direction view of the present utility model;

Fig. 3 includes the A-A cross-section cutaway view of two groups of seal arrangements for the utility model;

Fig. 4 is used for the embodiment of steel pipe push pipe for the utility model;

Fig. 5 is used for the embodiment of concrete push pipe for the utility model.

At first see also Fig. 1, Fig. 2.Seen that by Fig. 1 the end of pipeline section 8 is fixedly connected with the fixedly ring body 1 of the utility model relay ring in the wings, the ring packing attic base 5 usefulness fixing bolts 6 that are the flange dish type are fixed on the ring body 1.Extend a body flange on the bottom surface of sealing attic base 5, see also Fig. 2 simultaneously, be evenly equipped with the through hole that a circle passes through for connecting bolt on the card.Seen by Fig. 1 that again arc pressuring plate 3 is arranged on the outside of body flange of sealing attic base, regulate behind the wall thickness that bolt 4 radially screwed togather and passed body flange to head on arc pressuring plate 3,2 of seal rings are nested with on the periphery of arc pressuring plate 3.Structure is seen thus, O-ring seal 2 is subjected to the pressure of both direction, the one, sealed the axial pressure of attic base 5 inner side surfaces and seal ring 2 is pressed on fixedly on the ring body 1, another is to be subjected to the radial pressure of arc pressuring plate 3 and seal ring to be pressed on the inner circle wall of the steel sheath pipe 7 that fuses with the place ahead pipeline section, thereby seals up the slit of 7 of relay ring rear pipeline section and steel sheath pipes.

Figure 3 shows that the relay ring with two groups of identical seal arrangements, wherein the sealing attic base 5 of first group of seal arrangement is fixed on the ring body 1, and the sealing attic base 5 usefulness fixing bolts of second group of seal arrangement are fixed on the sealing attic base 5 of last group of seal arrangement.

Figure 4 shows that the utility model is used for the embodiment of steel pipe push pipe.See that by figure present embodiment has adopted two groups of identical seal arrangements, be fixed on oil cylinder roof pressure on the place ahead pipeline section 11 on the back side of the sealing attic base 5 of second group of seal arrangement.Again as seen, ring body 1 is provided with a mud jacking hole 9.Figure 5 shows that the utility model is used for the embodiment of concrete push pipe.Seen that by figure the end of the place ahead concrete pipe 11 is given and is embedded with a steel sheath pipe 7, the other end of this sheathed casing 7 is linked on the rear concrete pipe 8.The end of rear concrete pipe 8 is given and is embedded with the fixedly ring body of a steel plate 1 as relay ring, and sealing attic base 5 usefulness bolts 6 are fixed on this fixedly on the ring body 1.Number in the figure 9 is the mud jacking hole.In a further embodiment, can all give the end that is embedded in rear concrete pipe 8, then seal attic base 5 and be equivalent to get final product on the sealing attic base 5 that 1, the second group of seal arrangement of ring body is fixed by bolts to first group of seal arrangement together with ring body 1 and first group of seal arrangement.

Claims (3)

1, is arranged on the seal arrangement of the push pipe relay ring between the forward and backward pipeline section in a kind of under ground piping jacking construction, include fixedly ring body (1), seal ring (2), the arc pressuring plate (3) on the fixedly connected pipeline section in the wings and regulate bolt (4), it is characterized in that also including a dismountable ring packing attic base (5), this ring packing attic base (5) is the flange dish type, try to get to the heart of a matter and extend a body flange on the face, card is provided with the through hole that a circle passes through for connecting bolt; Said arc pressuring plate (3) is arranged on the outside of body flange of sealing attic base (5), regulates bolt (4) and radially screws togather and pass behind the body flange and to head on arc pressuring plate (3), and seal ring (2) is nested with again on the periphery of arc pressuring plate (3); This ring packing attic base (5) that arc pressuring plate (3), seal ring (2) is housed and regulates bolt (4) is fixed on fixedly on the ring body (1) with fixing bolt (6).

2, according to the seal arrangement of the described push pipe relay ring of claim 1, it is characterized in that having constituting the ring packing attic base (5) that is equipped with arc pressuring plate (3), seal ring (2) on two, three multiple-sealed its body flanges and regulates bolt (4), back one ring packing attic base (5) is fixed on the last ring packing attic base with fixing bolt.

3,, it is characterized in that the rear pipeline section near said fixedly ring body (1) is provided with the mud jacking hole (9) of a pressure injection thixotropic slurry according to the seal arrangement of claim 1 or 2 described push pipe relay rings.

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