157-168 of 248 results
What Is the Inspection Range of Heat Exchangers?
- Aug 19, 2021
- Hits: 92
With inspection at different stages of the manufacturing process, the inspector examines the work and documents the inspection results. The inspection range of heat exchangers is listed below: (1) Identification...
Why Testing the Water Pressure after Overhauling the Heat Exchanger?
- Aug 05, 2021
- Hits: 334
The purpose of the pressure test after maintenance is to check whether the heat exchanger has the ability to withstand the design pressure safely (i.e. the compressive strength), the tightness, the quality...
How to Stipulate the Maintenance Cycle of Shell and Tube Heat Exchangers?
- Jul 05, 2021
- Hits: 234
How to stipulate the maintenance cycle of shell and tube heat exchangers? According to the requirements of "Pressure Vessel Safety Technical Supervision Regulations", combined with the production...
What Are the Causes of the Internal Leakage of the Tubular Heat Exchanger?
- Jun 16, 2021
- Hits: 381
What are the causes of the internal leakage of the tubular heat exchanger? The internal leakage of the heat exchanger may have the following reasons: (1) The heat exchange tube is corroded, perforated,...
How to Repair Leaking Heat Exchange Tubes?
- Jun 01, 2021
- Hits: 190
What are the leaking situations of the heat exchanger? The heat exchanger leaks due to cracks and perforations caused by fluid medium corrosion, wear, scouring, assembly strain, defects in the tube itself,...
What Are the Main Reasons for the Failure of the Plate Heat Exchanger?
- May 17, 2021
- Hits: 105
What combined load may make the fixed tube sheet heat exchanger fail to meet the strength conditions, and use other forms of heat exchangers (such as U-shaped tube type)? Under the combined action...
How to maintain the tube sheet gasket?
- May 07, 2021
- Hits: 123
How to maintain the tube sheet gasket? Under normal circumstances, horizontal placement can prevent deformation or damage. Why do the gaskets on both sides of the tube plate have to be of the same material?...
How Does the Bolt Fastening of Heat Exchangers Perform Correctly?
- Apr 22, 2021
- Hits: 101
How do the bolt fastening sequence of heat exchanger tube boxes and tube plates perform correctly? Generally, diagonal bearing and cross-bearing are adopted for fastening, and a torque wrench is used...
What Are the Causes of Severe Heat Exchanger Vibration?
- Apr 22, 2021
- Hits: 56
What are the causes of severe heat exchanger vibration? （1）Resonance caused by medium frequency （2）Resonance caused by external pipe vibration How to deal with severe vibration of heat exchangers? （1）Changing...
Why the Heat Exchanger Resistance Will Exceed the Allowable Value?
- Apr 14, 2021
- Hits: 68
What is the reason that the heat exchanger resistance will exceed the allowable value? （1）Filter failure （2）Scaling inside and outside of casing and pipe How to deal with the problem that the heat...
Why Is There Poor Heat Transfer of the Heat Exchanger?
- Apr 14, 2021
- Hits: 64
What is the reason for the poor heat transfer of the heat exchanger? （1）Heat exchange tube scaling （2）Poor water quality, oil pollution and many microorganisms （3）Clapboard short circuit How to deal with...
What Is the Cause of Seal Leakage at the Flange of the Heat Exchanger?
- Mar 25, 2021
- Hits: 80
What is the cause of seal leakage at the flange of the heat exchanger? （1）Gaskets are under pressure, corrosion, deterioration. （2）Bolts are weak, loose or corroded. （3）Flanges lack of rigidity with sealing...