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Heating and heat supply cogeneration steam turbine

A combined heat and power, heating and heating technology, applied in the field of steam turbines, can solve the problems of low efficiency, small transfer torque capacity of journals, and low heat supply, and achieve simple operation and maintenance, strong safety assurance, and high heating efficiency. Effect

Inactive Publication Date: 2012-04-04
北京北重汽轮电机有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the medium voltage belt generator in the shafting, the journal has a small torque transmission capacity; the low pressure passes through the clutch with high pressure, and the shafting resistance to torsional vibration is poor; as a result, the existing medium and large heating steam turbines use steam extraction method, less heat supply, high heat consumption, low efficiency, and low energy utilization

Method used

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  • Heating and heat supply cogeneration steam turbine
  • Heating and heat supply cogeneration steam turbine
  • Heating and heat supply cogeneration steam turbine

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Embodiment Construction

[0044] In the technical solution of the present invention, the low-pressure rotor of the steam turbine is used alternately with the drive shaft to realize steam condensation or back pressure operation of the steam turbine.

[0045] ——overall plan

[0046] The non-heating period remains unchanged, and the low-pressure rotor is replaced with a transmission shaft during the heating period. During the heating period, the high and medium voltage rotors are directly connected to the generator rotor through the transmission shaft, and the low pressure part is removed from the flow and the low pressure heater is turned off.

[0047] The 1#, 2#, 3# low-pressure heaters of the main thermal system of the steam turbine were cut off.

[0048] In terms of heating configuration, it is necessary to increase the heating network heater.

[0049] ——Main parameters (thermal parameters, overall layout and structural dimensions)

[0050] Inlet steam parameters: no change

[0051] Exhaust parame...

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Abstract

The invention discloses a heating and heat supply cogeneration steam turbine. The heating and heat supply cogeneration steam turbine comprises a high and middle pressure rotor and a low-pressure part, wherein the high and middle pressure rotor can be switched to be directly connected with a generator rotor through a transmission shaft; and the low-pressure part allows flow to pass through and a low-pressure heater can phase down. Based on the technical scheme, the heating and heat supply cogeneration steam turbine is high in heating efficiency and safety guarantee, small in investment and easy to operate and maintain.

Description

technical field [0001] The invention relates to a steam turbine, in particular to a steam turbine for cogeneration of heat and power for heating and heating. Background technique [0002] Domestic existing high-pressure series 100MW class, ultra-high pressure 135MW class, ultra-high pressure 200MW class, subcritical 300MW class, supercritical 350MW class medium and large-scale heating and heating steam turbines all adopt steam extraction method, which has low heat supply and high heat consumption The problem of low efficiency. [0003] Conventional steam turbine generator shafting adopts high-voltage with medium-voltage, medium-voltage with low-voltage, and low-voltage with generator modes. The solution is that the low pressure can realize the clutch of low pressure, high pressure and medium pressure through the automatic clutch with high pressure, high pressure with medium pressure, and medium pressure with generator shafting mode, and then realize the operation of condens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D15/10F01K17/02
CPCY02E20/14
Inventor 张士国董学权赵楠
Owner 北京北重汽轮电机有限责任公司
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