Steel-jacketed steel direct-buried steam insulation pipe (steel-jacketed steel direct-buried steam insulation pipe) is composed of steel pipe, anti-corrosion coated steel pipe and superfine glass wool filled between steel pipe and coat.

鋼套鋼直埋蒸汽保溫管保溫構(gòu)造根據(jù)滑動方式不同分為：內(nèi)滑動式與外滑動式

According to different sliding modes, the thermal insulation structure of steel-jacketed direct-buried steam insulation pipe can be divided into internal sliding type and external sliding type.

應(yīng)用：

Application:

鋼套鋼直埋蒸汽保溫管普遍用于液體、氣體的保送管網(wǎng)， 化工管道保溫工程石油、化工、集中供熱熱網(wǎng)、空調(diào)通風管道、市政工程等。

Steel-jacketed steel direct-buried steam insulation pipe is widely used in liquid and gas pipeline network, chemical pipeline insulation engineering petroleum, chemical industry, central heating network, central air-conditioning ventilation pipeline, municipal engineering, etc.

用鋼套鋼直埋蒸汽保溫管的保溫、滑動光滑和暴露管端的防水問題。保溫管不只具有傳統(tǒng)地溝和架空敷設(shè)管道難以比較的技術(shù)、適用性能，而且還具有顯著的社會效益和經(jīng)濟效益，也是供熱的有力措施。

Insulation, smooth sliding and waterproofing problems of directly buried steam insulation pipe with steel sleeve are exposed. Thermal insulation pipe not only has advanced technology and applicability which is difficult to compare with traditional trench and overhead pipeline laying, but also has remarkable social and economic benefits. It is also a powerful measure of heating energy saving.

直埋保溫管主要技術(shù)性能參數(shù)

Main Technical Performance Parameters of Direct Buried Insulation Pipe

工作鋼管

Working steel pipe

管道品種：無縫鋼管或螺旋縫埋弧焊鋼管

Pipeline variety: seamless or spiral submerged arc welded steel pipe

管道材質(zhì)：10號或20號鋼

Pipeline material: No. 10 or No. 20 steel

執(zhí)行規(guī)范：GB/T8163-2008、GB/T9711

Implementation Specifications: GB/T8163-2008, GB/T9711

保溫層

Thermal insulation layer

資料品種：硅酸鋁中、離心玻璃棉復(fù)合

DATA VARIETY: Aluminum silicate medium and centrifugal glass wool composite

常溫導熱系數(shù)：≤0.045w/m.℃

Normal temperature thermal conductivity: <0.045w/m.

容重（干）：100～150kg/m3

Bulk density (dry): 100-150 kg/m3

運用溫度：-40℃～800℃

Application Temperature: -40 ~800

外套鋼管

Overcoat Steel Tube

管道品種：螺旋縫焊接鋼管

Pipeline variety: spiral welded steel pipe

管道材質(zhì)：Q235-A（B）

Pipeline Material: Q235-A(B)

執(zhí)行規(guī)范：T5037-2012

Implementation Specification: T5037-2012

外滑動構(gòu)造技術(shù)特性：

Technical characteristics of outer sliding structure:

1、外滑動構(gòu)造由于保溫層與外護管之間有一層空氣層，管道在運輸及施工過程中浸的水可在逐漸暖管過程中排出，因此比擬合適于雨量充分、水位高的地域。但關(guān)于氯離子、硫離子等含量比擬高的土壤（特別在沿海地域），對外鋼管的防腐需增強。

1. Because there is an air layer between the insulation layer and the outer protective pipe, the water immersed in the pipeline during transportation and construction can be discharged during the gradual heating pipe process, so the fitting method is more suitable for areas with sufficient rainfall and high water level. However, for soils with relatively high contents of chloride and sulfur ions (especially in coastal areas), the corrosion prevention of external steel pipes needs to be enhanced.

2、外滑動構(gòu)造是基于“鋼地溝”的思想設(shè)計而成，可充沛應(yīng)用彎頭停止自然補償，降低了本錢，同時減小了固定墩推力。

2. The outer sliding structure is designed based on the idea of "steel trench". It can make full use of elbow to stop natural compensation, reduce the cost, and reduce the thrust of fixed pier.

3、將管線在固定墩處分為多個相對獨立的局部，在兩固定墩之間設(shè)排潮管（好為兩套），則排潮管既能掃潤氣體，又可作為日常運轉(zhuǎn)的信號管，可隨時監(jiān)測管網(wǎng)運轉(zhuǎn)狀況。

3. If the pipeline is divided into several relatively independent parts at the fixed pier and two sets of tidal drainage pipes are installed between the two fixed piers (preferably two sets), the tidal drainage pipes can not only remove wet gas, but also serve as signal pipes for daily operation, and can monitor the operation of the pipeline network at any time.

4、外滑動構(gòu)造可依據(jù)需求改形成抽真空構(gòu)造。

4. External sliding structure can be changed into vacuum-pumping structure according to demand.

特性：

Characteristic:

1 、降低工程造價。

1. Reduce the cost of construction.

2 、熱損耗低，節(jié)約能源。

2. Low heat loss and energy saving.

3、防腐，絕緣性能好，運用壽命長。

3. Anti-corrosion, good insulation performance and long service life.

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