First, an overview 
 JKB type wellhead thermal expansion compensator is used for wellhead steam injection pipeline from the thermal expansion compensation pipeline, is a pressure pipe areas. Instructions from the structure, principles, technical standards, operation and maintenance necessary. Please read carefully before use. 
 Second, the product model 
 Technical parameters 
 Model OD wall thickness of the working pressure temperature compensation from the connection 
 JKB-A 
 I, II, I × II Φ73 × 9 (11) ≤ 17.5 
 (21) ≤ 350 
 (370) ≤ 0.5 clamp 
 JKB-B 
 I, II, I × II Φ63 × 11 ≤ 21 ≤ 370 ≤ 0.5 clamp 
 JKB-C 
 I, II, I × II Φ63 × 11 ≤ 21 ≤ 370 ≤ 0.5 clamp 
 Third, the structural principle 
 Activities column, the packing room, pressure caps, thermal expansion compensator, to take over first-class composition of the short tube and clamp, the active column and the packing room is essential. Activities column are free to rotate, and thus play a wellhead steam injection pipeline connection in order to compensate for distance, and play a good seal. 
 Fourth, using the operating 
 Compensator should be recognized before using the products or the date of manufacture, production or date of manufacture shall not be more than one year, or else should be replaced seals, packing, and pressure test after the trial (according to standards). 
 Before use should be checked whether the appearance of the compensator handling defects caused by the process, especially the clamp parts, should not affect the clamp to seal the defect. 
 Activities column connection with the pipeline, with the axis of rotation, the activity column axial force only, but should not bear the tracks back to power. 
 Connected, you should try to make the compensator uniform by force, rather than floating. 
 (5) prohibited the over-temperature overpressure trial, normal trial pressure ≤ 21Mpa, temperature ≤ 355 ℃. 
 Compensator after 12 times of trial, is strictly prohibited re-use should be for scrap processing. 
 Note the repeated use, activity column if not easy to rotate, may be appropriate to release the pressure cap, and then the pressure cap connected to the back tight. 
 Five maintenance 
 (1) when not in use, store, dry and ventilated place flat or stand up; handling are forbidden to smash slam, pay attention to the protection of the sealing surface of the clamp head. 
 2 after use to clean up properly stored, not the sun, rain, forbidden contact with acids, alkalis, salts, corrosive substances, fill record. 
 . Reuse should first check the appearance, and then view the last record, such as no have any questions. 
 4 under the conditions of the Company to provide technical information, compensation does not allow the demolition and repair welding.