CN201018359Y

CN201018359Y - Hydrogen gas controller

Info

Publication number: CN201018359Y
Application number: CNU2006200312998U
Authority: CN
Inventors: 李建国; 汪献忠
Original assignee: Henan Relations Electronics Co Ltd
Current assignee: Li Jianguo; Wang Xianzhong; Henan Relations Co Ltd
Priority date: 2006-03-07
Filing date: 2006-03-07
Publication date: 2008-02-06
Anticipated expiration: 2016-03-07

Abstract

The utility model relates to a hydrogen control device for monitoring the purity, pressure and hydrogen filling amount of the hydrogen in an internal cooling generator set, which comprises a hydrogen purity analyzer communicating with a purity sampling pipe, a gas pressure transmitter communicated with a hydrogen pressure sampling pipe and a pressure gauge; wherein the hydrogen source is communicated with a hydrogen flow instrument through a pipeline, the hydrogen flow instrument is communicated with the top of the generator through the pipeline and a valve, the lower part of the generator is communicated with the outer atmosphere through the pipeline and the valve, the carbon dioxide source is communicated with the lower part of the generator through the pipeline and the valve, the purity sampling pipe for monitoring the hydrogen in the top and bottom of the generator is arranged on the top and bottom of the generator, and the top of the generator is provided with the sampling pipe connected with the pressure transmitter; the utility model not only can display the signal on the scene and transfer the signal to a centralized control chamber of the electric power plant, but also can timely and accurately monitor all internal conditions of the generator; therefore the utility model realizes the simultaneous measurement of the system purity, pressure and flow and other parameters of the hydrogen and integrates multiple functions.

Description

Hydrogen Controlling Device

Technical field

The utility model relates to and a kind ofly is used for monitoring purity, the pressure of the hydrogen of internal cooling generator group and mends the Hydrogen Controlling Device of hydrogen amount.

Background technology

The jumbo unit of China power plant replaces the unit of low capacity in the past gradually, and the inside of generator is the hydrogen cooling, the many power plant of China are when introducing the jumbo generating set of hydrogen refrigeration, the deficiency that the monitoring of hydrogen each side is done, the many power plant of China also use the out-of-date methods of chemical colorimetric to detect the purity of generator inside so far, the artificial visually examine, certainty of measurement is lower, error big (＜5%), usually breaks down for this reason.

For the Hydrogen Vapor Pressure in its generator, Hydrogen Vapor Pressure decision generator operating efficiency reaches the refrigeration to it, power plant still uses old-fashioned stem-winder mostly at present, be difficult to accurately measure its generator pressure inside, can only be rough measure roughly value, therefore can cause some slight leakage of generator to detect, thereby cause the generation of some accidents.

Because power plant all needs repairing every year, per especially 3 years overhaul, inside to generator will be keeped in repair, the displacement of the gas after maintenance is good is excellent to be important, carbon dioxide replacement air, hydrogen exchange carbon dioxide all need the auxiliary corresponding work of carrying out of the equipment of being correlated with, particularly when stop ventilation, why hydrogen purity be worth the beginning starter-generator, all needs accurate data.

The existing power plant of China also can detect purity, pressure and the mass flow of the hydrogen of generator inside, but the detection part that it can only be discrete, and also be subjected to the restriction and the influence of other pipelines, some also can only on-the-spotly show, can not carry out distal displayed, not reach the purpose of real-time monitoring generator.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of prior art existence and provides a kind of hydrogen purity, the pressure that can monitor generator inside in time, accurately to reach the Hydrogen Controlling Device to the benefit hydrogen amount of generator, and can on-the-spotly show again can be with the central station of floating dock of the signal is far passed power plant.

The purpose of this utility model is achieved in that and comprises the hydrogen gas purity analysis meter that is connected with the purity sampling pipe, the gas pressure transmitter and the Pressure gauge that are connected with the Hydrogen Vapor Pressure sampling pipe, sources of hydrogen is connected by pipeline and hydrogen flowing quantity instrument, the hydrogen flowing quantity instrument is connected by the top of pipeline and valve and generator, the bottom of generator is by pipeline and valve and outside atmosphere connection, carbon dioxide source is connected by the bottom of pipeline and valve generator, a purity sampling pipe that is used for monitoring generator top and bottom hydrogen is respectively arranged at the top of generator and bottom, and the top of generator also has a cut-in pressure transmitter to be used for monitoring the sampling pipe of generator internal hydrogen pressure.

Described sources of hydrogen is meant hydrogen bus-bar or the hydrogen station that produces hydrogen, carbon dioxide source is meant carbon dioxide bus-bar or the carbon dioxide station that produces carbon dioxide, the hydrogen that hydrogen that the hydrogen bus-bar produces or hydrogen station provide passes through filter, arrive valve behind the mass flow instrument, and enter the top of generator, carbon dioxide in the generator enters in the atmosphere by valve and pipeline, reach the purpose of hydrogen exchange carbon dioxide, have teletransmission port and teletransmission purity instrument and Pressure gauge monitoring generator bottom to the DCS system, the purity of top hydrogen and generator pressure inside, have teletransmission port and teletransmission flow to the hydrogen flowing quantity instrument monitoring hydrogen of DCS system, the carbon dioxide that the carbon dioxide bus-bar produces enters CO 2 heater, and entering the bottom of generator along pipeline, the top of generator is a carbon dioxide, the mist of air or carbon dioxide enters in the atmosphere along pipeline by valve.

The utility model reasonably is designed into purity, pressure and the mass flow of hydrogen together, can on-the-spotly show the central station of floating dock of the signal is far passed power plant can be monitored all situations of generator inside in time, accurately again.Measure integrated a plurality of functions when having realized a plurality of parameter of generator hydrogen system purity, pressure, flow.Not only can on-the-spotly show, and the signal is far passed to DCS system can be realized monitoring in real time.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

As shown in Figure 1, the utility model comprises and purity sampling pipe 6,7 hydrogen gas purity analysis meters that are connected 12, the gas pressure transmitter and the Pressure gauge 13 that are connected with Hydrogen Vapor Pressure sampling pipe 8, sources of hydrogen 14 is connected by pipeline and hydrogen flowing quantity instrument 16, the hydrogen flowing quantity instrument is connected by the top of pipeline and valve 5 and generator, the bottom of generator is by pipeline and valve 2,3 connect with outside atmosphere, carbon dioxide source 9 is connected by the bottom of pipeline and valve 1 and generator, a purity sampling pipe 6 that is used for monitoring generator top and bottom hydrogen is respectively arranged at the top of generator and bottom, 7, the top of generator also has a cut-in pressure transmitter 13 to be used for monitoring the sampling pipe 8 of generator internal hydrogen pressure.

Described sources of hydrogen is meant hydrogen bus-bar or the hydrogen station 14 that produces hydrogen, carbon dioxide source is meant carbon dioxide bus-bar or the carbon dioxide station 9 that produces carbon dioxide, the hydrogen that hydrogen that hydrogen bus-bar 14 produces or hydrogen station provide is by filter 15, hydrogen flowing quantity instrument 16 backs arrive valve 5, and enter the top of generator, carbon dioxide in the generator is by valve 3,2 and pipeline enter in the atmosphere, reach the purpose of hydrogen exchange carbon dioxide, have teletransmission port and teletransmission purity instrument and Pressure gauge monitoring generator bottom to the DCS system, the purity of top hydrogen and generator pressure inside, have teletransmission port and teletransmission flow to the hydrogen flowing quantity instrument monitoring hydrogen of DCS system, the carbon dioxide that the carbon dioxide bus-bar produces enters CO 2 heater, and entering the bottom of generator along pipeline, the top of generator is a carbon dioxide, the mist of air or carbon dioxide enters in the atmosphere along pipeline by valve.

By four mode of operations: carbon dioxide replacement air or hydrogen, hydrogen exchange carbon dioxide, generator operate as normal, generator row hydrogen.Concrete operation principle can be with reference to the accompanying drawings.

In the process of carbon dioxide replacement air or hydrogen, open valve 1, valve 3, valve 4, at this moment, the carbon dioxide that carbon dioxide bus-bar 9 produces enters CO 2 heater 10, and enter the bottom of generator 11 along pipeline, because carbon dioxide is heavier, so the bottom of generator 11 is the mist of carbon dioxide, air or carbon dioxide, this gas enters in the atmosphere along pipeline by valve 4, valve 3.A purity sampling pipe 6,7 that is used for monitoring generator top and bottom hydrogen is respectively arranged at the top of generator and bottom, and hydrogen gas purity analysis meter 12 is connected with purity sampling pipe 6,7.In addition, the top also has a sampling pipe 8 cut-in pressure transmitters 13 to be used for monitoring the pressure of generator internal hydrogen.As can be seen, purity instrument and manometer all have a teletransmission port from accompanying drawing, are used for purity, pressure signal teletransmission to the DCS system, to realize real-time monitoring.

In the process of hydrogen exchange carbon dioxide, open valve 2, valve 3, valve 5, the hydrogen that hydrogen that hydrogen bus-bar 14 produces or hydrogen station provide arrives valve 5 by filter 15, hydrogen flowing quantity instrument 16 backs, and enter the top of generator, because of hydrogen lighter, so generator bottom is a carbon dioxide, this gas enters in the atmosphere by valve 2, valve 3 and along pipeline, reaches the purpose of hydrogen exchange carbon dioxide.As can be seen, the purity instrument and the Pressure gauge that have remote transfer signal are still in running order from accompanying drawing, the purity and the generator pressure inside of monitoring generator bottom, top hydrogen.Simultaneously, hydrogen stream can be monitored out the flow of hydrogen through the mass flow instrument, to determine to mend the hydrogen amount.Same, the mass flow instrument also has the teletransmission port, but teletransmission is to the DCS system.

During the generator operate as normal, only there is valve 5 to open, to realize uninterrupted benefit hydrogen.In this process, no matter purity instrument, Pressure gauge still are that the mass flow instrument is all in running order, have realized real-time monitoring.

During generator row hydrogen, open valve 2, valve 3, valve 4, at this moment, the hydrogen in the generator enters in the atmosphere, and top gas is by valve 4 valve 3 of flowing through, and bottom gas realizes arranging fast hydrogen by valve 2 valve 3 of flowing through.Same, purity instrument and Pressure gauge are in running order.

Claims

1. Hydrogen Controlling Device, comprise the hydrogen gas purity analysis meter that is connected with the purity sampling pipe, the gas pressure transmitter and the Pressure gauge that are connected with the Hydrogen Vapor Pressure sampling pipe, it is characterized in that: sources of hydrogen is connected by pipeline and hydrogen flowing quantity instrument, the hydrogen flowing quantity instrument is connected by the top of pipeline and valve and generator, the bottom of generator is by pipeline and valve and outside atmosphere connection, carbon dioxide source is connected by the bottom of pipeline and valve and generator, a purity sampling pipe that is used for monitoring generator top and bottom hydrogen is respectively arranged at the top of generator and bottom, and the top of generator also has a cut-in pressure transmitter to be used for monitoring the sampling pipe of generator internal hydrogen pressure.

2. a kind of Hydrogen Controlling Device according to claim 1, it is characterized in that: described sources of hydrogen is meant hydrogen bus-bar or the hydrogen station that produces hydrogen, carbon dioxide source is meant carbon dioxide bus-bar or the carbon dioxide station that produces carbon dioxide, hydrogen bus-bar or hydrogen station are by the top of filter, mass flow instrument connection valve and generator, and generator is by valve and pipeline and atmosphere connection.