Product Encyclopedia of Flexible and Removable Insulation Jackets

1、 What is this thing?

To put it simply, it's a kind ofThermal insulation that can be worn and taken off repeatedly; Cotton padded jacket;Specially tailored for industrial equipment.

Unlike the traditional methods of applying insulation mud and wrapping iron sheets, this thing is sewn with multiple layers of composite materials and fixed to the equipment with fasteners such as Velcro, straps, and zippers. It can be disassembled in a few minutes during maintenance, repaired and then put back on, without the need to knock or knock.

The core value is in eight words: easy disassembly and reuse.

2、 What does the product structure look like?

A proper set of flexible insulation sleeves, with several layers inside and outside, each performing its own duties:

1. Outer protective layer (leather)
Facing the workshop environment directly, one has to endure it. Common materials:

• Silicone coatingMost commonly used, with a temperature resistance of 250 ° C; C up and down, waterproof and oil resistant, moderate price

• PTFE coating: Temperature resistance of 300 ° C; C or above, resistant to acid and alkali corrosion, preferred for chemical workshops

• High silica fabricTemperature resistance of 800 ° C; C or above, fire-resistant but not waterproof, suitable for use in dry and high-temperature environments

• PVC coatingCheap, low temperature resistance, only suitable for low temperature environments

2. Core material insulation layer (meat)
The protagonist of insulation, what we talked about last time:

• Fiberglass needle punched blanket: cheap, but afraid of water and easy collapse

• Rock wool: high temperature resistance, but brittle and absorbent

• Aluminum silicate ceramic fiber: resistant to high temperatures, but extremely powdery

• Aerogel feltThe lowest thermal conductivity, hydrophobic and non settling, currently the strongest comprehensive performance

3. Inner lining layer (inside)
The side that is attached to the device must withstand the surface temperature of the device:

• High temperature cloth, ceramic cloth, PTFE film, etc., matched according to temperature grade

4. Fasteners

• Velcro (most commonly used, convenient)

• Stainless steel buckle (heat-resistant, more secure)

• Straps, buckles, zippers (selected according to working conditions)

3、 Several major families of flexible insulation sleeves

According to application scenarios, there are mainly several categories:

1. Flexible detachable insulation sleeve (universal type)

This is the most common category, which can be equipped with valves, flanges, heat exchangers, tanks, and anything else. The characteristic iscustom-madeOne device comes in one set, tightly fitting together.

Applicable temperature range：-70° C ~ 1000° C (Check what core material to choose)
Core Selling PointsDisassembly and assembly do not require tools, it can be done in five minutes, and the equipment will be scrapped after repeated use

2. Fireproof cover for actuator

The actuator of the chemical plant (pneumatic head, electric head) needs to be held up for a while in case of a fire to ensure emergency shutdown. This thing is not just an ordinary insulation, it isPassive fire prevention：

• High temperature resistant ceramic fiber or aerogel for core material

• Outer protective cover with high silicon oxide cloth or PTFE impregnated cloth

• Capable of withstanding hydrocarbon fires up to 1093 degrees Celsius; C， Maintain the temperature inside the actuator not exceeding the critical point of failure, usually for more than 30 minutes

• Must have UL1709 or equivalent fire certification

The essential difference from ordinary insulation sleevesInsulation sleeves are used for energy conservation, while fireproof covers are used for escape and life preservation.

3. Insulation sleeve for vulcanizing machine

The vulcanizing machines in rubber factories and tire factories have a mold temperature of 1780 degrees Celsius, and the heat loss is frighteningly large. The emphasis on the insulation sleeve of the vulcanizing machine lies in:

• Fit complex surfacesThe shape of the mold is peculiar and requires precise mold opening and surveying

• Pressure resistant and scratch resistantFrequent mold closing action, insulation sleeve cannot be moved or stuck in the mold

• Quick disassembly and assemblyWhen changing the mold, one should not waste time

• The material is mostly applied with aerogel+silica gel coating, which is thin and heat preservation, and does not add confusion to the mold closing

energy-saving effectVery intuitive, a large vulcanizing machine with insulation can often save a year's electricity or steam costs by buying several sets of insulation sleeves.

4. Electric heat tracing insulation sleeve

This isInsulation sleeve+electric heatingCombination products:

• Sew electric heat tracing tape between the inner lining layer and the core material

• External temperature control box, set temperature for automatic heating and constant temperature

• SuitableNeed to maintain a specific temperatureScenarios such as high solidification point of materials (asphalt, paraffin, syrup), easy freezing and blockage of pipelines, and process requirements for constant temperature reactions

Simply put, it combines insulation and active heating into one, and when powered on, the insulation sleeve becomes; Electric blanket;.

Selection CriteriaThe power density, explosion-proof rating (chemical plants must have explosion-proof certification), and temperature control accuracy of the heat tracing belt.

4、 List of Applicable Scenarios

Where can flexible insulation sleeves be used? Almost any place that can be packed can be used:

• Reaction kettle: Cauldron body, jacket, head, non-standard customization

• heat exchangerHead cover, cylinder, tube plate, split design for easy disassembly and inspection

• Valve flangeStandard parts have molds, and non-standard parts can also be ordered

• pipe elbow: Tube in tube structure, with separate detachable elbows

• Steam turbine and pump bodyHigh temperature equipment saves energy while preventing burns

• Instrument tubeAnti freezing and anti condensation, used to protect the life of key measuring points

• Rubber and Plastic Machinery: Vulcanizing machine, injection molding machine barrel, extruder die head

5、 Five step selection process

When selecting insulation sleeves in the workshop, go through these five questions and they will not deviate significantly:

1. What is the temperature?Determine the core material and inner and outer layer materials

2. Will it be dismantled or not? What is the frequency?Determine the form and structural block of fasteners

3. Is there corrosion in the environment? Do you have solvents?Determine the material of the outer sheath

4. Are there any fire prevention requirements?Yes, we will take the route of the fireproof cover, which requires certification

5. Do you want to actively heat it up?Yes, just turn on the electric heat tracing integrated system

6、 Why are more and more factories throwing away traditional insulation?

The reason why flexible insulation sleeves have been installed quickly in recent years can be summarized as follows:

• Maintenance and repair do not require damaging the insulation layerSave the labor and material costs of knocking insulation and pasting insulation during each maintenance

• Insulation is not effective; One time”Can be dismantled and reused, no problem for ten or eight years

• Energy saving general ledger is more cost-effectiveThe initial investment may be higher, but with maintenance and downtime losses, the overall cost is often lower

• The workshop is clean and tidyNo need to smash glass wool and asbestos residue on the ground anymore

• Good safetyThe external surface temperature of high-temperature equipment is controllable, does not burn people, and reduces the risk of fire

7、 Avoiding pitfalls reminder

1. Inaccurate surveying and mapping, completely useless.Flexible insulation sleeve is; Tailored to measure” When surveying, the equipment openings, branch pipes, nameplates, and brackets must be clearly drawn, with a difference of one centimeter. If they are installed, they may leak heat due to bulging.

2. Don't be superstitious; Universal type;.If the pipe diameter and flange standards are unified again, buying a universal molded sleeve will always have a lower fit than customization, which will reduce the energy-saving effect.

3. The cheapest may not necessarily be the most economical.Use good materials (aerogel+PTFE) once, and use them for seven or eight years; Exchanging cheap goods every two years, the losses in labor and downtime have already exceeded.

4. Fireproof covers must be certified.If an unverified actuator fireproof cover cannot withstand critical moments, the consequences are extremely serious, and this money cannot be saved.