HRPK20160073B3 - Thermoplastic pipe with reinforced spiral and it's production procedure - Google Patents

Abstract

Existing thermoplastic tubes with a hollow profiled coil (A) should be additionally loaded with weights in order to sink. The problem was solved by making a thermoplastic tube with a reinforced coil (B). The hollow profiled coil (2) is filled with a mixture (4) which, after being pressed into the coil, becomes rigid. A mixture of water and one of the materials: cement, concrete, gypsum or other material, which are pumped into the coil by pump (P), is used to reinforce the coil. The solid mixture in the profiled coil cannot be circulated or separated after firing. When the mixture begins to emerge at the other end of the reinforced coil, the charge is interrupted and plugs (5) are inserted into the inlet and outlet. The profiled coil can be filled with the mixture through a number of auxiliary openings (6) and may have different external shapes. A thermoplastic tube with a reinforced coil (B) has great advantages over a thermoplastic tube with a hollow profiled coil (A), namely: higher crown capacity, reduced bending, longer life, higher specific gravity, better anchoring in water, reduced proportion of thermoplastic materials in the total weight, easily sinks in the water without the use of additional weights, shortens the construction time and significantly reduces the cost of underwater systems.

Description

The field of technology

The invention relates to the production of a thermoplastic pipe with a reinforced coil.

According to the International Classification of Patents (IPC), the invention belongs to area F - mechanical engineering, class F16 - production process, subclass F16L- which includes pipes, group F16L 11/11 which includes pipes with a corrugated wall.

Technical problem

Thermoplastic pipes with a hollow coil are produced from PE, PP and PVC materials. The specific gravity of such material is lower than the specific gravity of water. This creates great problems when laying these pipes in water, because they do not sink but float due to buoyancy. In order to lay these pipes in the designed position in the water, they should be additionally loaded with weights. This represents an additional cost, and it takes more time to lay. In the production of pipes with the same head capacity, more material is needed. A pipe with a larger nominal diameter has a wall of several layers, which is why the wall is thick and the pipe has a large total weight. All this has a negative impact on the costs of constructing underwater pipe systems with these pipes.

The technical problem solved by this invention relates to the production of such thermoplastic pipes, the design of which will allow them to be laid in water without additional weights, which will be strong enough and which will enable the cheaper construction of underwater pipe systems.

State of the art

In the process of manufacturing a thermoplastic pipe, which has a larger diameter, a plastic pipe with a smaller diameter is simultaneously wrapped around the outer jacket as reinforcement. The plastic tube with a smaller diameter is profiled on the inside, and it is wound on a tube with a larger diameter in the form of a coil. In this way, the top bearing capacity of the thermoplastic pipe is increased, the deflection is reduced and the service life of the pipe material is increased. All this is not enough for thermoplastic pipes to sink in water without using additional weights.

Hollow profiled pipes for reinforcement can be of different shapes such as: round, oval, square, rectangular or trapezoidal. Reinforcing tubes can be placed on the outer sheath of thermoplastic tubes in the form of multiple rings or in the form of a single coil.

When laying such channel pipes in the water, as with marine outlets, it is necessary, due to their relatively light weight, to make weights, usually made of concrete, which are placed on the pipes to prevent buoyancy or lifting of the pipes, which increases the costs of carrying out these works.

When making a pipe with a higher crown stiffness, more material is needed, which is applied in several layers, which requires more time and more material, i.e. a higher production cost.

The cost of making corrugated thermoplastic pipes, due to their low modulus of elasticity, is higher than pipes made of duroplast, cast iron, concrete and ceramics.

The essence of invention

The essence of the invention is a thermoplastic tube with a reinforced coil and the process of obtaining it.

To obtain a thermoplastic pipe with a reinforced coil, a thermoplastic pipe with a hollow profiled coil is used. A thermoplastic pipe with a reinforced coil is obtained by reinforcing a hollow profiled coil, which is wrapped around a thermoplastic pipe, by filling it with a rare mixture, which, after a short time has passed since it is pressed into the hollow profiled coil, turns into a solid state. A mixture of cement, concrete or gypsum mixed with water is used to reinforce the coil. The mixture is pressed through a hollow profiled coil using a pump injection process. The mixture completely fills the inside of the profiled coil and does not allow circular movement after hardening, nor separation after cracking of the solid substance. When the thin mixture starts to come out at the other end of the reinforced coil, the filling is stopped, and both openings of the coil are blocked.

The profiled coil can be round, oval, square, rectangular or trapezoidal in shape.

The described procedure can be applied to corrugated thermoplastic pipes and thermoplastic pipes with multiple ring reinforcements.

A thermoplastic pipe with a reinforced coil sinks easily when placed in water, without the use of additional weights, which significantly reduces the costs and time of building the system.

Short description of the pictures

Figure 1 shows a thermoplastic tube with a hollow profiled coil and a detail of the longitudinal section through the profiled coil - from the front.

Figure 2 shows the thermoplastic pipe from Figure 1. - from above.

Figure 3 shows the thermoplastic pipe from Figure 1. in section X – X – from above.

Figure 4 shows the thermoplastic pipe after filling the profiled coil with the reinforcing compound - from the front.

Figure 5 shows the thermoplastic pipe after filling the profiled coil with the reinforcing compound and a detail of the longitudinal section through the reinforced profiled coil - from the front.

Figure 6 shows the thermoplastic pipe from Figure 5. in the section Y – Y – from above.

Figure 7 shows the thermoplastic pipe from Figure 5. in section Z – Z – front.

Figure 8 shows a thermoplastic pipe with an armored coil - a detail of the cross-section of the blocked inlets and outlets of the armored coil.

Figure 9 shows a thermoplastic pipe with a reinforced coil with two auxiliary plugged openings after the reinforcing compound has been pressed into the coil - from the front.

Detailed description of the performance and functioning of the invention

A thermoplastic pipe is a pipe with a larger diameter, the jacket of which is wrapped on the outside by a hollow profiled plastic pipe with a smaller diameter in the form of a coil. A hollow profiled coil with a smaller diameter serves as a reinforcement for a thermoplastic pipe with a larger diameter. The hollow coil increases the load-bearing capacity of the thermoplastic pipe, reduces deflection and increases the service life of the pipe material. All this is not enough for the thermoplastic tube to sink in water without using additional weights.

The hollow profiled coil for reinforcing the thermoplastic pipe can be of different shapes, such as: round, oval, square, rectangular or trapezoidal. To strengthen the thermoplastic pipe, several individual circular rings can be placed on the outer wall.

In the example from this invention, a thermoplastic pipe with a hollow profiled round coil is described.

The process of obtaining a thermoplastic pipe with a reinforced coil

To obtain a thermoplastic pipe with a reinforced coil B, a thermoplastic pipe with a hollow profiled coil A was used.

In Fig. 1. and Fig. 2. is shown a thermoplastic tube with a hollow profiled coil A, from the front and from above. A hollow profiled coil 2 is wrapped around the outer sheath 1 of the thermoplastic pipe, where the inner sheath is in the form of circular profiles 3. In Fig.3. section X – X through a thermoplastic tube with a hollow profiled coil is shown.

Thermoplastic pipe with reinforced coil B, Fig. 4, 5, 6, 7 and 8, is obtained by filling the hollow profiled coil 2, which wraps the thermoplastic pipe with hollow profiled coil A, and reinforcing it by filling with a rare mixture 4.

The procedure for obtaining a thermoplastic pipe with a reinforced coil includes the following operations: preparation of the mixture 4 for reinforcement, pressing the mixture 4 into the hollow profiled coil 2 with pump P which is connected at the entrance to the hollow profiled coil, and closing the entrance and exit from the reinforced coil with plugs 5 after fill the hollow profiled coil 2 with mixture 4. During reinforcement, the exit from the hollow profiled coil 2 is opened so that the mixture completely squeezes the air out of the coil.

A mixture of various materials is used to reinforce the hollow profiled coil 2, which after a short time change from a rare to a solid state. Mixtures made of cement, concrete, gypsum or some other material, mixed with water, are used for reinforcement. The prepared mixture 4 should be thin so that it can be more easily pressed into the hollow profiled coil 2 by the injection process with the pump P, Fig. 4. The proportion of material and water in the reinforcing mixture is determined empirically so that the mixture 4, before solidification, completely fills the circular profiles 3 in the hollow profiled coil 2. In this way, the circular movement of the solid substance after hardening and the separation of the solid substance after cracking are prevented.

When the thin mixture 4 starts to come out at the other end of the reinforced coil, Fig. 4, the pressing of the mixture is stopped, and the entrance and exit from the reinforced coil are closed with a special plug 5 or welded with the same material, as shown in Fig. 8.

On Fig. 5. a thermoplastic pipe with a reinforced coil B in the front and a partial section of the reinforced coil 2 are shown. Fig. 6. the section Y – Y from Fig.5 is shown. through a thermoplastic tube with a reinforced coil B.

If the thermoplastic pipe and the hollow profiled coil are longer, several auxiliary openings 6 can be opened on the profiled coil 2 for pressing the mixture 4 for segmental reinforcement, Fig. 9. This guarantees a better filling of the circular profiles 3 in the coil. All auxiliary openings must be closed after pressing the mixture.

The described procedure can also be applied to thermoplastic pipes with multiple ring reinforcements. In the case of thermoplastic pipes with individual rings, the reinforcement procedure is more expensive because the reinforcement is done by opening the openings for the entrance and exit of the mixture on each ring separately.

Thermoplastic pipe with reinforced coil B has great advantages over thermoplastic pipe with hollow profiled coil A.

The described process of obtaining a thermoplastic pipe with a reinforced coil B significantly increases its peak bearing capacity and reduces deflection, which is very important when laying pipe channel systems. The service life of thermoplastic pipes increases, and the compound for reinforcing the profiled coil increases the specific weight and enables better anchoring of the thermoplastic pipe in the water. Reinforcing the coil enables a significant reduction in the amount of thermoplastic material used in the total weight of the thermoplastic pipe with a reinforced coil. By reinforcing the hollow profiled coil with cheap materials and reducing the amount of thermoplastic material used, it significantly contributes to reducing the share of the cost of thermoplastic material in the total cost of the thermoplastic pipe with reinforced coil B.

The thermoplastic pipe with reinforced coil B sinks easily when placed in water, without the use of additional weights, which significantly reduces the costs and time of building underwater systems.

LIST OF REFERENCE MARKS IN THE DESCRIPTION OF THE INVENTION AND IN THE DRAWINGS

A – thermoplastic pipe with a hollow profiled coil

1 – outer sheath of thermoplastic pipe

2 – hollow profiled coil

3 – internal circular profiles in the coil

4 – compound for reinforcing hollow profiled coil

5 – plug for closing the inlet and outlet of the coil

6 – clogged auxiliary openings on the coil after pressing the mixture

P – pump

B – thermoplastic pipe with reinforced coil

Application of the invention

Thermoplastic pipe with reinforced coil B has a very wide application.

Due to its great mechanical, hydraulic, chemical and thermal properties and service life, it is used in drainage, sewerage and water transport for:

- installation in underwater outlets,

- installation in trenches with and without underground water,

- creation of retentions, underground and above-ground tanks, audit shafts and underground chambers, and

- making water transport channels of all kinds.

The thermoplastic pipe with reinforced coil B sinks in the water without being burdened with additional weights, which speeds up the laying process and reduces the construction costs of the water system.

Claims (6)

1. Thermoplastic pipe with a reinforced coil, characterized in that a thermoplastic pipe with a hollow profiled coil (A) is used to obtain a thermoplastic pipe with a reinforced coil (B); that the hollow profiled coil (2) is reinforced by filling with a rare mixture (4) which, after being pressed into the hollow profiled coil (2), turns into a solid state. 2. Thermoplastic pipe with reinforced coil, according to claim 1, characterized in that for reinforcing the hollow profiled coil (2) a mixture (4) is used, which is obtained by mixing water and one of the following materials: cement, concrete, gypsum or other materials with similar properties; that the proportion of material and water in the mixture is determined empirically so that the mixture (4), before solidification, completely fills the internal circular profiles (3) in the hollow coil (2). 3. Thermoplastic pipe with a reinforced coil, according to claim 1, characterized by the fact that the hollow profiled coil (2) can have different external shapes: round, oval, square, rectangular and trapezoidal. 4. The process of obtaining a thermoplastic pipe with a reinforced coil, from claim 1, characterized in that it includes the following operations: preparation of the mixture (4) for reinforcement; pressing the mixture (4) into the hollow profiled coil (2) with a pump (P) connected at the entrance to the hollow profiled coil (2), so that the exit from the hollow profiled coil remains open; closing the inlet and outlet of the reinforced coil with plugs (5) after the hollow profiled coil (2) is filled with the mixture (4). 5. Thermoplastic pipe with a reinforced coil, according to claim 1, indicated by the fact that several auxiliary openings (6) are opened on the hollow profiled coil (2) of greater length for pressing the mixture (4), which guarantees a better filling of the internal circular profiles (3). in the coil, so that the auxiliary openings (6) are closed after the hollow profiled coil (2) is filled with the mixture (4). 6. Thermoplastic pipe with a reinforced coil, according to claim 1, indicated by the fact that it has a significantly increased vertical bearing capacity, that it has reduced deflection, that it has a longer service life, that it has an increased specific weight, that it has better anchoring in water, that it has a reduced proportion of thermoplastic material in relation to the total weight; that it sinks easily in water without the use of additional weights; that thermoplastic pipe with reinforced coil (B) shortens the construction time of underwater systems.