Dear masters, what are the steps for warming up a compressor?

Steam turbine pipe warming and warm-up procedures: 1. Warm the pipes using steam at a backpressure of 1.1.0 MPa. 1.1. Introduce steam into the boundary area; after ensuring proper drainage of condensate, open the drain valves located in that area to release the excess liquid； 1.2. In the fully open section, open all drain valves located between the 1.0 MPa steam main valve and the turbine outlet gate valve. After ensuring that all liquid accumulation in the pipelines has been removed, slightly open the steam valve in this section to direct steam to the turbine outlet gate valve ； 1.3. Open the low-point drain valve located between the turbine outlet gate valve and the outlet check valve to drain all the liquid accumulated in the pipeline; close the bypass valve of the check valve, then slightly open the turbine outlet gate valve to direct steam to the turbine outlet check valve ； 1.4. During the pipe warming process, attention should be paid to the drainage of condensate at all low points. The steam introduction process must be carried out slowly, with the pressure increase rate strictly controlled to prevent pipeline and equipment damage caused by water hammer. Once a minor water hammer occurs, the steam inlet valve should be immediately reduced in size until the water hammer disappears ； If water hammer is severe, immediately close the steam extraction valve. 2. Steam warming for 3.5 MPa main steam: 2.1. Verify that the main valve for 3.5 MPa steam entering the plant area and its bypass valves are fully closed ； 2.2. Slowly open the low-point drain valve located before the main valve for 3.5 MPa steam supply to the unit, drain the liquid until steam is visible, and then open the low-point drain valve fully to allow venting ； 2.3. Install the 3.5MPa steam separator, verify that its drain valve is in operation, and keep the top vent valve slightly open ； 2.4. Drain the accumulated liquid from the low-point drain valve located before the first isolation valve at the inlet of the fully open turbine. Slightly open the bypass valve of the main valve in that area to direct steam to this drain location for release ； 2.5. Open the low-point drain valves located after the first isolation valve at the turbine inlet, as well as the low-point drain valves before the turbine emergency shutdown valve; also slightly open the vent valve at the turbine inlet to drain any liquid accumulated in the pipelines ； 2.6. Once the pressures before and after the main valve in the transition zone are roughly balanced, gradually open the main valve of the transition zone, while simultaneously reducing the flow rate through its low-point vent valve and closing the bypass valve ； 2.7. Slightly open the first isolation valve at the turbine inlet, gradually open the second isolation valve at the turbine inlet, and open the vent valve located between the two isolation valves. This process must be carried out slowly to prevent water hammer and avoid any impact on the turbine base ； 2.8. When the temperature in front of the first isolation valve at the turbine inlet is greater than 250°C, the pipe warming process is completed, and all low-point drain and steam vent valves on that section of pipeline are closed ； 2.9. If steam leakage is detected from the quick-shut valve during the pipe warming process, immediately close the pipe warming valve, rotate the turbine promptly, open all of the turbine’s drain valves to remove any remaining water, and inform the person in charge to contact the relevant personnel right away for handling. 3. Turbine warm-up: 3.1. Before warming up, open the following drain valves: 1) Frame drain valve ； 2) Drain valve in front of the outlet check valve ； 3) Drain valve of the machine balance tube ； 4) Drain valves before and after the outlet safety valve ； 3.2. Verify that the dial indicator is in place, the coupling has been disengaged, and the hydraulic turning device is operational ； 3.3. Open the low-point drain valve located before the outlet check valve of the turbine fully, as well as the bypass valve of the turbine’s outlet safety valve and the drain valves situated before and after that safety valve, in order to remove all accumulated liquid from the pipelines. Once this is done, slowly open the bypass valve of the outlet check valve to allow backpressure steam to be used for warming up the turbine. Ensure that the temperature rise during warming does not exceed 50°C per hour; the turbine’s temperature should be above 250°C. Meanwhile, increase the rate of liquid drainage during the warming process ； 3.4. If the hydraulic turning device does not function during the warm-up process, manual turning of the rotor is required to prevent it from bending; the rotor should be rotated 180° every 3 to 4 minutes ； 3.5. During the warming-up process, it is necessary to continuously check whether the turbine claws move freely; if needed, a feeler gauge can be used to check the gaps. The degree of thermal expansion of the machine body should also be monitored regularly. If the claws cannot move freely, it indicates that the steam pipeline design is inadequate, and the warming-up process should be stopped to identify and resolve the issue ； 3.6. When the machine temperature exceeds 250°C, it can be considered that the static warm-up is complete; at this point, the drain valve mentioned above can be adjusted to a smaller opening size, the bypass valve of the outlet check valve can be closed, the crankshaft rotation can be stopped, and preparations can be made to start the machine.

The turbine is just being warmed up, so the electric drive compressor is started directly

Oh, I learned it, master. We have two units – one for condensing vapor and the other for back pressure. The ones powered by electricity don’t require warming up: handshake

Oh, I learned it, master. We have two units – one for condensing vapor and the other for back pressure. The ones powered by electricity don’t require warming up: handshake

Master, you’ve figured out that I have a question. Our warm-up process seems to be a bit different from yours, but not by much. Thank you, master:P