CN213180568U

CN213180568U - Turbo generator leaks monitoring and early warning device

Info

Publication number: CN213180568U
Application number: CN202021731950.9U
Authority: CN
Inventors: 王振南
Original assignee: Harbin Electric Machinery Co Ltd
Current assignee: Harbin Electric Machinery Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-05-11
Anticipated expiration: 2030-08-19

Abstract

The utility model discloses a turbo generator leaks monitoring and early warning device comprises liquid detector A, liquid detector B, liquid detector C, pressure differential transmitter, the control unit, bellows admission valve A, bellows return air valve A, bellows blowoff valve A, bellows admission valve B9 bellows return air valve B, bellows blowoff valve B, bellows admission valve C, bellows return air valve C, bellows blowoff valve C, stainless steel pipeline and cable. The utility model analyzes the variation trend of the difference value by comparing the pressure of the hydrogen and the pressure of the cooling water, and can early warn the water leakage risk of the generator in advance; through installing the liquid detector in generator bottom, the inside water leakage state of monitoring generator in real time.

Description

Turbo generator leaks monitoring and early warning device

Technical Field

The utility model relates to a turbo generator field especially relates to a turbo generator monitoring and early warning device that leaks.

Background

The water leakage monitoring and early warning device is an important component of the turbonator, can early warn the water leakage risk of the turbonator in advance, and can monitor the water leakage state in time once the water leakage problem of the turbonator occurs. The generator has water leakage fault, the cooling water can not take away heat, the generator unit is tripped if the heat is harmful, the generator is damaged if the heat is harmful, and a stator winding or an iron core is burnt to influence the safe and stable operation of the generator unit.

Disclosure of Invention

The utility model provides a solve above-mentioned problem, provide a turbo generator monitoring and early warning device that leaks, can in time monitor the generator state of leaking to early warning generator risk of leaking in advance guarantees the generating set safety and stability and moves.

The technical scheme of the utility model is that: the device is composed of a liquid detector A (1), a liquid detector B (2), a liquid detector C (3), a differential pressure transmitter (4), a control unit (5), a corrugated pipe air inlet valve A (6), a corrugated pipe air return valve A (7), a corrugated pipe blow-down valve A (8), a corrugated pipe air inlet valve B (9), a corrugated pipe air return valve B (10), a corrugated pipe blow-down valve B (11), a corrugated pipe air inlet valve C (12), a corrugated pipe air return valve C (13), a corrugated pipe blow-down valve C (14), a stainless steel pipeline (15) and a cable (16), wherein the corrugated pipe air inlet valve A (6) is arranged at an air inlet below the side surface of the liquid detector A (1), the corrugated pipe air return valve A (7) is arranged at an air return opening above the side surface, the corrugated pipe; a corrugated pipe air inlet valve B (9) is installed at an air inlet below the side surface of the liquid detector B (2), a corrugated pipe air return valve B (10) is installed at an air return port above the side surface, and a corrugated pipe blow-down valve B (11) is installed at the bottom and is connected through a stainless steel pipeline (15); a corrugated pipe air inlet valve C (12) is arranged at an air inlet below the side surface of the liquid detector C (3), a corrugated pipe air return valve C (13) is arranged at an air return port above the side surface, and a corrugated pipe blow-down valve C (14) is arranged at the bottom and is connected through a stainless steel pipeline (15); the liquid detector A (1), the liquid detector B (2), the liquid detector C (3) and the differential pressure transmitter (4) are respectively connected to the control unit (5) through cables (16).

Principle of operation

The liquid detector A (1), the liquid detector B (2) and the liquid detector C (3) are respectively used for monitoring the water leakage states of the steam end, the middle part and the excitation end bottom of the generator. When water leaks from the generator, the water is gathered at the bottom of the generator shell and flows into the liquid detector A (1), the liquid detector B (2) or the liquid detector C (3) through the air inlet pipeline and the valve of the liquid detector. The liquid level transmitters above the liquid detector A (1), the liquid detector B (2) and the liquid detector C (3) transmit the real-time liquid level to the control unit (16). When the liquid level in the liquid detector A (1) reaches 40mm, the control unit (16) prompts the steam end position of the generator to alarm for water leakage; when the liquid level in the liquid detector B (2) reaches 40mm, the control unit (16) prompts the middle position of the generator shell to alarm for water leakage; when the liquid level in the liquid detector C (3) reaches 40mm, the control unit (16) prompts the excitation end position of the generator to alarm for water leakage.

The air return pipes arranged on the side surfaces of the liquid detector A (1), the liquid detector B (2) and the liquid detector C (3) are used for ensuring that the liquid detector and the generator are in a communicated state and water in a generator shell smoothly flows into the liquid detector. The bottoms of the liquid detector A (1), the liquid detector B (2) and the liquid detector C (3) are respectively provided with a corrugated pipe blowdown valve A (8), a corrugated pipe blowdown valve B (11) and a corrugated pipe blowdown valve C (14) for blowdown.

The high pressure side of the differential pressure transmitter (4) is connected with a hydrogen pressure signal in the generator, the low pressure side of the differential pressure transmitter (4) is connected with a water pressure signal in the generator, and the difference value of the differential pressure transmitter (4) is transmitted to the control unit (5) in real time through a cable (16). Under normal working conditions, the hydrogen pressure inside the generator is required to be greater than the cooling water pressure by 0.035MPa, and when the difference between the hydrogen pressure and the cooling water pressure is less than 0.035MPa, the control unit (5) prompts that the risk that cooling water permeates out of the pipe through the pipe wall exists inside the generator.

Technical effects

The device capable of effectively warning and monitoring the water leakage problem in the generator does not exist in the prior art, and the water leakage alarm is only prompted after the water leakage of the generator occurs. The utility model analyzes the variation trend of the difference value by comparing the pressure of the hydrogen and the pressure of the cooling water, and can early warn the water leakage risk of the generator in advance; through installing 3 sets of liquid detector in the generator bottom, can real-time supervision generator let out leakage quantity, can discover at the initial stage of leaking, can effectively monitor the inside state of leaking of generator, location leakage point position has sufficient time to make the scheme for eliminating the defect on next step.

The utility model has the characteristics of the design is ripe, operation safe and reliable etc, satisfies turbonator operation requirement completely.

Drawings

FIG. 1 is a schematic view showing the connection of the components of a water leakage monitoring and early warning device of a steam turbine generator

Description of the drawings

The system comprises a liquid detector A1, a liquid detector B2, a liquid detector C3, a differential pressure transmitter 4, a control unit 5, a corrugated pipe air inlet valve A6, a corrugated pipe air return valve A7, a corrugated pipe blowdown valve A8, a corrugated pipe air inlet valve B9, a corrugated pipe air return valve B10, a corrugated pipe blowdown valve B11, a corrugated pipe air inlet valve C12, a corrugated pipe air return valve C13, a corrugated pipe blowdown valve C14, a stainless steel pipeline 15 and a cable 16.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the system is composed of a liquid detector a1, a liquid detector B2, a liquid detector C3, a differential pressure transmitter 4, a control unit 5, a bellows air inlet valve A6, a bellows air return valve a7, a bellows blow-off valve a8, a bellows air inlet valve B9, a bellows air return valve B10, a bellows blow-off valve B11, a bellows air inlet valve C12, a bellows air return valve C13, a bellows blow-off valve C14, a stainless steel pipeline 15 and a cable 16, wherein the bellows air inlet valve A6 is installed at the lower side of the side surface of the liquid detector a1, the bellows air return valve a7 is installed at the upper side air return port, the bellows blow-off valve a8 is installed at the; a corrugated pipe air inlet valve B9 is installed at an air inlet below the side surface of the liquid detector B2, a corrugated pipe air return valve B10 is installed at an air return port above the side surface, and a corrugated pipe blow-down valve B11 is installed at the bottom and is connected with the bottom through a stainless steel pipeline 15; a bellows air inlet valve C12 is installed at an air inlet below the side surface of the liquid detector C3, a bellows air return valve C13 is installed at an air return port above the side surface, and a bellows blow-down valve C14 is installed at the bottom and is connected with the stainless steel pipeline 15; the liquid detector a1, the liquid detector B2, the liquid detector C3 and the differential pressure transmitter 4 are connected to the control unit 5 through cables 16, respectively.

The aforesaid, only be the embodiment of the utility model discloses an it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.

Claims

1. The utility model provides a turbo generator monitoring and early warning device that leaks which characterized by: the device is composed of a liquid detector A (1), a liquid detector B (2), a liquid detector C (3), a differential pressure transmitter (4), a control unit (5), a corrugated pipe air inlet valve A (6), a corrugated pipe air return valve A (7), a corrugated pipe blow-down valve A (8), a corrugated pipe air inlet valve B (9), a corrugated pipe air return valve B (10), a corrugated pipe blow-down valve B (11), a corrugated pipe air inlet valve C (12), a corrugated pipe air return valve C (13), a corrugated pipe blow-down valve C (14), a stainless steel pipeline (15) and a cable (16), wherein the corrugated pipe air inlet valve A (6) is arranged at an air inlet below the side surface of the liquid detector A (1), the corrugated pipe air return valve A (7) is arranged at an air return opening above the side surface, the corrugated pipe; a corrugated pipe air inlet valve B (9) is installed at an air inlet below the side surface of the liquid detector B (2), a corrugated pipe air return valve B (10) is installed at an air return port above the side surface, and a corrugated pipe blow-down valve B (11) is installed at the bottom and is connected through a stainless steel pipeline (15); a corrugated pipe air inlet valve C (12) is arranged at an air inlet below the side surface of the liquid detector C (3), a corrugated pipe air return valve C (13) is arranged at an air return port above the side surface, and a corrugated pipe blow-down valve C (14) is arranged at the bottom and is connected through a stainless steel pipeline (15); the liquid detector A (1), the liquid detector B (2), the liquid detector C (3) and the differential pressure transmitter (4) are respectively connected to the control unit (5) through cables (16).