CN206175843U - Anti difference in temperature T type nodular cast -iron pipe - Google Patents

Abstract

The utility model discloses an anti difference in temperature T type nodular cast -iron pipe, including the nodular cast -iron pipe body, bellmouth, recess, inside lining cement layer, cast iron body layer, inorganic heat preservation mortar layer, external coating, anti -corrosion coating. The beneficial effects of the utility model are that: inorganic heat preservation mortar layer can effectively keep warm thermal -insulated and ageing -resistantly, the expend with heat and contract with cold who has effectively avoided T type nodular cast -iron pipe is big, easily wear out and should not receive positive light -struck shortcoming for a long time, quality of water can be protected to the inside lining cement layer, reduce head loss, the service life of T type nodular cast -iron pipe is prolonged, anti -corrosion coating can improve the anti -erosion capacity to the acid -base composition in the sewage, external coating can protect cast iron body layer to bury the erosion that receives for a long time under soil, further improve T type nodular cast -iron pipe's corrosion resistance, the utility model discloses effectively solved T type nodular cast -iron pipe and destroyed because of expend with heat and contract with cold leads to T type nodular cast -iron pipe inner structure at the soil environment that the difference in temperature is big, unable quality of water and the corrosion resistance of guaranteeing.

Description

A kind of T-shaped ductile iron pipe of Anti-temperature difference

Technical field

This utility model is related to a kind of cast iron pipe, the T-shaped ductile iron pipe of specially a kind of Anti-temperature difference, belongs to pipe applications skill Art field.

Background technology

T-shaped ductile iron pipe be for recommend for admission to school water, coal gas, atmosphere, oil and the daily elevated pressures fluid of heating steam etc. and The characteristics of T-shaped spheroidal graphite casting material of other use is that inner wall smooth, lightweight, corrosion-resistant, good antiscale property function be good, the low one-level of cost. The forging technology of ductile iron pipe has, and individual middle water cooling is, when modern skill, not conform to technique Spheroidal graphite cast-iron skill work(is contrasted with plain cast iron pipe, the corrosion resistance of the plain cast iron pipe that not only stood facing each other, and have intensity it is high, Good toughness, wall are thin, lightweight, impact resistance, bending function is big, install box lunch etc., and also achieve at home and fulfil well With.

There are many defects in the existing domestic ductile iron pipe for water delivery, mainly have easily aging, expands with heat and contract with cold big, is difficult Long-time by sunlight irradiation, therefore bury in the big soil of the temperature difference anti-T-shaped ductile iron pipe can so that in the presence of expanding with heat and contract with cold, T-shaped ductile iron pipe internal structure is destroyed, and loses original ability, therefore, it is proposed to a kind of T-shaped ductile iron pipe of Anti-temperature difference.

Utility model content

The purpose of this utility model is that to solve the above problems and provides a kind of Anti-temperature difference T-shaped ductile iron pipe.

This utility model is achieved through the following technical solutions above-mentioned purpose, a kind of T-shaped ductile iron pipe of Anti-temperature difference, including Spheroidal graphite cast-iron body, the spheroidal graphite cast-iron body two ends are provided with bellmouth, and the bellmouth is internally provided with some grooves, the ball In graphite cast iron pipe body, portion's outermost is provided with external protection, and inorganic heat insulation mortar layer is provided with below the external protection, described Cast iron body layer is provided with below inorganic heat insulation mortar layer, liner cement layer, the ball below the cast iron body layer, is provided with In graphite cast iron pipe body, portion most inner side is provided with corrosion-resistant coating.

Preferably, the inorganic heat insulation mortar layer and the liner cement layer are all that the inside of the spheroidal graphite cast-iron body is filled out Fill layer.

Preferably, the thickness of the liner cement layer is 3-10mm.

Preferably, the thickness of the inorganic heat insulation mortar layer is about 3-5mm.

Preferably, diameter of the interior diameter of the bellmouth more than the spheroidal graphite cast-iron body.

The beneficial effects of the utility model are：Inorganic heat insulation mortar layer can effective insulation and ageing-resistant, effectively keep away The sunkissed shortcoming of big, the easily aging and unsuitable long-time of expanding with heat and contract with cold for T-shaped ductile iron pipe, liner cement layer energy are exempted from Water quality is enough protected, the loss of flood peak is reduced, the service life of T-shaped ductile iron pipe is improved, corrosion-resistant coating can be improved in sewage Soda acid composition corrosion resistance, external protection can protect cast iron body layer to be embedded under soil suffered erosion for a long time, The corrosion resistance of T-shaped ductile iron pipe is improved further, it is big in the temperature difference that this utility model efficiently solves T-shaped ductile iron pipe Soil environment causes T-shaped ductile iron pipe internal structure to be destroyed because expanding with heat and contract with cold, and loses original ability, it is impossible to ensure the water of water Matter and corrosion resistance.

Description of the drawings

Fig. 1 is this utility model overall structure diagram；

Generalized sections of the Fig. 2 for this utility model spheroidal graphite cast-iron body；

In figure：1st, spheroidal graphite cast-iron body, 2, bellmouth, 3, groove, 4, liner cement layer, 5, cast iron body layer, 5, inorganic guarantor Warm screed, 6, external protection, 7, corrosion-resistant coating.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of this utility model protection.

Refer to shown in Fig. 1-2, a kind of T-shaped ductile iron pipe of Anti-temperature difference, including spheroidal graphite cast-iron body 1, ductile iron pipe 1 two ends of body are provided with bellmouth 2, and bellmouth 2 is internally provided with some grooves 3, and 1 inside outermost of spheroidal graphite cast-iron body is provided with outer guarantor Sheath 7, is provided with inorganic heat insulation mortar layer 6, cast iron body layer is provided with below inorganic heat insulation mortar layer 6 below external protection 7 5, liner cement layer 4 is provided with below cast iron body layer 5, inside spheroidal graphite cast-iron body 1, most inner side is provided with corrosion-resistant coating 8.

Inorganic heat insulation mortar layer 6 and liner cement layer 4 are all the inside packed layer of spheroidal graphite cast-iron body 1, internal packed layer The erosion of ductile iron pipe inside and outside is prevented from, prevents destructurized, lose original effect, the thickness of liner cement layer 4 For 3-10mm, suitable thickness effective protection water quality and can reduce the loss of water, and the thickness of inorganic heat insulation mortar layer 6 is about 3- 5mm, suitable thickness ensure that the heat-insulation and heat-preservation ability and ageing-resistant ability of spheroidal graphite cast-iron body 1, and the interior diameter of bellmouth 2 is big In the diameter of spheroidal graphite cast-iron body 1, it is easy to the installation with ductile iron pipe.

First, 1 most external of spheroidal graphite cast-iron body be external protection 7, the various erosions that effectively can completely cut off in soil, spheroidal graphite 1 penetralia of cast iron body is corrosion-resistant coating 8, it is possible to increase the corrosion resistance to soda acid composition in water, liner cement layer 4 and nothing Machine heat-insulation mortar bed 6 is internal packed layer, and liner cement layer 4 ensure that water quality and reduce the loss of water, inorganic heat insulation mortar Layer 6 heat-insulation and heat-preservation and can improve resistance to ag(e)ing, and cast iron body layer 5 is intermediate layer, supports ductile iron pipe, with certain strong Degree and toughness.

The beneficial effects of the utility model：Inorganic heat insulation mortar layer can effective insulation and ageing-resistant, be prevented effectively from Big, the easily aging and unsuitable shortcoming sunkissed for a long time of expanding with heat and contract with cold for T-shaped ductile iron pipe, liner cement layer can Protection water quality, reduces the loss of flood peak, improves the service life of T-shaped ductile iron pipe, and corrosion-resistant coating can be improved in sewage The corrosion resistance of soda acid composition, external protection can protect cast iron body layer to be embedded in erosion suffered under soil for a long time, enter One step improves the corrosion resistance of T-shaped ductile iron pipe, and this utility model efficiently solves T-shaped ductile iron pipe in the big soil of the temperature difference Earth environment causes T-shaped ductile iron pipe internal structure to be destroyed because expanding with heat and contract with cold, and loses original ability, it is impossible to ensure the water quality of water And corrosion resistance.

It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new The scope of type is by claims rather than described above is limited, it is intended that the equivalency fallen in claim is contained All changes in justice and scope are included in this utility model.Any reference in claim should not be considered as restriction Involved claim.

Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped Containing an independent technical scheme, this narrating mode of description is only that those skilled in the art should for clarity Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art Understandable other embodiment.

Claims (5)

1. a kind of T-shaped ductile iron pipe of Anti-temperature difference, including spheroidal graphite cast-iron body（1）, it is characterised in that：The spheroidal graphite cast-iron body （1）Two ends are provided with bellmouth（2）, the bellmouth（2）It is internally provided with some grooves（3）, the spheroidal graphite cast-iron body（1）It is internal Outermost is provided with external protection（7）, the external protection（7）Lower section is provided with inorganic heat insulation mortar layer（6）, the inorganic guarantor Warm screed（6）Lower section is provided with cast iron body layer（5）, the cast iron body layer（5）Lower section is provided with liner cement layer（4）, The spheroidal graphite cast-iron body（1）Internal most inner side is provided with corrosion-resistant coating（8）.

2. the T-shaped ductile iron pipe of a kind of Anti-temperature difference according to claim 1, it is characterised in that：The inorganic heat insulation mortar Layer（6）With the liner cement layer（4）All it is the spheroidal graphite cast-iron body（1）Inside packed layer.

3. the T-shaped ductile iron pipe of a kind of Anti-temperature difference according to claim 1, it is characterised in that：The liner cement layer（4） Thickness be 3-10mm.

4. the T-shaped ductile iron pipe of a kind of Anti-temperature difference according to claim 1, it is characterised in that：The inorganic heat insulation mortar Layer（6）Thickness be about 3-5mm.

5. the T-shaped ductile iron pipe of a kind of Anti-temperature difference according to claim 1, it is characterised in that：The bellmouth（2）It is interior straight Footpath is more than the spheroidal graphite cast-iron body（1）Diameter.