CN212586334U

CN212586334U - Device for measuring hydrogen humidity

Info

Publication number: CN212586334U
Application number: CN202021313110.0U
Authority: CN
Inventors: 黄振兴; 赵清春; 芮小虎; 张伟; 彭迈; 裘沛珑; 张宏宇
Original assignee: Huaneng Huaiyin Second Power Generation Co Ltd
Current assignee: Huaneng Huaiyin Second Power Generation Co Ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-02-23
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a device for measure hydrogen humidity, the device include that hydrogen gets into pipeline and hydrogen evacuation pipeline, hydrogen gets into the pipe connection and has first side branch pipeline, hydrogen evacuation pipe connection has the other branch pipeline of second, first side branch pipeline with be linked together through the measuring tube between the other branch pipeline of second, hydrogen get into the pipeline with still be equipped with on-the-spot sample unit between the hydrogen evacuation pipeline, on-the-spot sample unit establishes ties on the measuring tube, convey the testing result the control unit, the control unit is with testing result analysis and output, and the hydrogen that detects through humidity passes through again the other branch pipeline of second flows in the hydrogen evacuation pipeline. The utility model discloses a institutional advancement can be used to hydrogen-cooled generating set's hydrogen humidity accurate detection, and can reject the fluid and detect the influence of precision to humidity, has improved the detection precision.

Description

Device for measuring hydrogen humidity

Technical Field

The utility model belongs to the technical field of measuring equipment, in particular to a device for measuring hydrogen humidity.

Background

Hydrogen is used as a good cooling medium, because of the advantages of low density, high specific heat, high heat conductivity and the like, the hydrogen is widely applied to cooling of internal systems of generators, in the process of recycling hydrogen in a power plant, the humidity of the hydrogen needs to be accurately measured to realize effective control, at present, the measurement of the hydrogen in the generators is mainly manually measured by a portable meter on-site measurement or an online direct-insertion type humidity sensor, for the online meter, because oil stains are frequently generated in a pipeline, the hydrogen can be directly attached to the sensor, the measured data of the sensor generates large errors and cannot be normally used, frequent maintenance is needed, great troubles are brought to maintenance personnel, and meanwhile, certain hidden dangers are brought to the safe operation of the power plant, so the prior art is improved to solve the technical problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a device for measuring hydrogen humidity can be used to hydrogen cooling generating set's hydrogen humidity accurate detection, and can reject the influence of fluid to humidity detection precision.

The utility model discloses a realize through following technical scheme:

an apparatus for measuring hydrogen humidity, characterized by: the device comprises a hydrogen inlet pipeline and a hydrogen exhaust pipeline, wherein the hydrogen inlet pipeline is connected with a first bypass pipeline, the hydrogen exhaust pipeline is connected with a second bypass pipeline, the first bypass pipeline is communicated with the second bypass pipeline through a measuring pipeline, a field sampling unit is further arranged between the hydrogen inlet pipeline and the hydrogen exhaust pipeline and is connected in series on the measuring pipeline, the field sampling unit comprises a filter and a humidity transmitter, the humidity transmitter is connected with a control unit, hydrogen to be measured in humidity flows into the first bypass pipeline through the hydrogen inlet pipeline and then flows into the measuring pipeline from the first bypass pipeline, the filter can separate and discharge oil in the hydrogen to be measured in humidity, and hydrogen humidity detection is carried out through the humidity transmitter, and transmitting the detection result to the control unit, analyzing and outputting the detection result by the control unit, and enabling the hydrogen detected by the humidity to flow into the hydrogen emptying pipeline through the second side branch pipeline.

The utility model discloses a further improvement is, be equipped with humidity transducer in the humidity transducer, humidity transducer with the control unit links to each other, the humidity transducer below is equipped with humidity sample protection chamber, humidity sample protection chamber with humidity transducer's inner chamber is linked together.

The utility model discloses a further improvement is, the control unit includes output module and embedded microcomputer control module, embedded microcomputer control module respectively with output module humidity transducer links to each other.

The utility model discloses a further improvement is, be equipped with the filter core in the filter, the filter lower extreme is equipped with the drain, the drain with the inner chamber of filter is linked together.

The utility model discloses a further improvement is, humidity transmitter's side is equipped with the flowmeter, the flowmeter establishes ties be in on the measurement pipeline.

The utility model provides a pair of a device for measuring hydrogen humidity is located the filter with the side of flowmeter, it has governing valve and stop valve all to establish ties on the measuring tube.

The utility model provides a pair of a device for measuring hydrogen humidity, first side branch pipeline with the contained angle that hydrogen got into between the pipeline is 30-45, second side branch pipeline with the contained angle between the hydrogen evacuation pipeline is 30-45.

Compared with the prior art, the utility model, following obvious advantage has:

1. the utility model provides a pair of a device for measuring hydrogen humidity, the contained angle that first side branch pipeline and hydrogen got into between the pipeline is 30-45, and the contained angle between second side branch pipeline and the hydrogen evacuation pipeline is 30-45, when hydrogen of hydrogen-cooled generator set carried the measuring tube, alright prevent that the fluid that forms through the condensation of side branch pipeline from getting into in the hydrogen measures the pipeline.

2. The utility model provides a pair of a device for measuring hydrogen humidity has concatenated stop valve and governing valve on the measuring tube between first by-pass line and the filter, has concatenated stop valve and governing valve on the measuring tube between first by-pass line and the flowmeter, alright according to actual conditions real-time control hydrogen's entering and evacuation, improve the factor of safety of device.

3. The utility model provides a pair of a device for measuring hydrogen humidity is equipped with the filter on the measurement pipeline, is equipped with accurate filter core in the filter, and the end opening of filter is equipped with the drain, can separate out the fluid in the hydrogen after the filter filters, and the fluid of separation is got rid of from the drain, under the humidity condition that does not influence hydrogen, can reject the influence of the fluid miscellaneous material in the hydrogen to the hydrogen humidity measurement.

4. The utility model provides a pair of a device for measuring hydrogen humidity, be equipped with humidity transducer on the measurement pipeline, be equipped with humidity transducer in the humidity transducer, humidity transducer links to each other with the control unit, humidity transducer's below still is equipped with humidity sample protection chamber, hydrogen gets into humidity sample protection chamber through measurement pipeline earlier, gas flows in humidity sample protection intracavity, humidity sample protection chamber and humidity transducer inner chamber communicate each other, the back detects intracavity hydrogen, the testing result is reasonable true reliable more.

Drawings

FIG. 1 is the schematic view of the overall structure of a device for measuring hydrogen humidity of the present invention

FIG. 2 is the schematic structural diagram of the humidity transmitter of the present invention

In the figure, 1-hydrogen inlet pipeline, 2-stop valve, 3-regulating valve, 4-filter, 41-filter element, 42-sewage outlet, 5-humidity transmitter, 51-humidity sensor, 52-humidity sampling protection cavity, 53-air inlet, 54-protection filter element core, 55-air outlet, 6-flowmeter, 7-current input module, 8-embedded microcomputer control module, 9-output module, 10-hydrogen emptying pipeline, 11-measuring pipeline, 12-first bypass pipeline and 13-second bypass pipeline.

Detailed Description

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

Example 1

As shown in fig. 1, the present embodiment provides a device for measuring hydrogen humidity, the device includes a hydrogen inlet pipe 1 and a hydrogen exhaust pipe 10, the hydrogen inlet pipe 1 is connected to a first bypass pipe 12, the hydrogen exhaust pipe 10 is connected to a first bypass pipe 12, the first bypass pipe 12 is connected to a second bypass pipe 13 through a measurement pipe 11, a field sampling unit is disposed between the hydrogen inlet pipe 1 and the hydrogen exhaust pipe 10, the field sampling unit is connected to the measurement pipe 11, the field sampling unit includes a filter 4 (preferably, DBF2000, the same as below) and a humidity transmitter 5, the humidity transmitter 5 is connected to a control unit, hydrogen to be measured humidity flows into the first bypass pipe 12 through the hydrogen inlet pipe 1, and then flows into the measurement pipe 11 from the first bypass pipe 12, the filter can separate and exhaust oil from the hydrogen to be measured humidity, and then the humidity transmitter 51 detects the humidity of the hydrogen gas, the detection result is transmitted to the control unit, the control unit analyzes and outputs the detection result, and the hydrogen gas detected by the humidity flows into the hydrogen gas emptying pipeline 10 through the second side branch pipeline 13.

A humidity sensor 51 (preferably of the type DMT152, hereinafter the same) is provided in the humidity transmitter 5, the humidity sensor 5 is connected to the control unit, a humidity sampling protection chamber 52 (preferably of the type DB310QYQ, hereinafter the same) is provided below the humidity sensor 5, the humidity sampling protection chamber 52 is in communication with the inner chamber of the humidity sensor 5,

the control unit comprises an output module 9 and an embedded microcomputer control module 8, wherein the output module 9 and the humidity sensor 51 are respectively connected with the embedded microcomputer control module 8.

A filter element 41 (the preferred model is DBF2000-1, the same below) is arranged in the filter 4, a sewage discharge outlet 42 is arranged at the lower end of the filter 4, a flow meter 6 (the preferred model is ZF1.5, the same below) is further connected to the measuring pipeline 11, and the flow meter 6 is positioned beside the humidity transmitter 5.

Located alongside the filter 4 and the flow meter 6, the measuring pipe 11 is connected to a regulating valve 3 (preferably of the type Q91SA-PN6.4, see below) and to a shut-off valve 2 (preferably of the type F91SA-PN6.4, see below).

In this embodiment, the angle between the first bypass pipe 12 and the hydrogen inlet pipe 1 is 45 °, and the angle between the second bypass pipe 13 and the hydrogen evacuation pipe 10 is 45 °.

When the hydrogen sampling protection device works, a hydrogen inlet pipeline 10 is connected to a hydrogen circulation pipeline in a generator with certain pressure, hydrogen passes through a stop valve 2, then passes through an adjusting valve 3 to adjust proper flow rate and then enters a filter 4, the hydrogen is filtered by a precise filter element 41 (preferably, the model is DBF2000-1, the same below) in the filter 4 to carry out gas-liquid separation, filtered oil can be discharged through a sewage discharge outlet 42, as shown in figure 2, filtered clean hydrogen enters a humidity sampling protection cavity 52 in a humidity transmitter 5 through an air inlet 53, a humidity sensor 51 is positioned in an inner cavity of the humidity transmitter 5 and positioned above the humidity sampling protection cavity 52, the humidity sampling protection cavity 52 is internally composed of an air passage and a protection filter core 54 (preferably, the model is LX2550, the same below), when the hydrogen enters the humidity sampling protection cavity 52 through the air inlet 53, the gas flows in the humidity sampling protection cavity 52, the gas enters the sensitive part of the humidity sensor 51 through the protection filter core 54 by the permeation action, the humidity sensor 51 detects the change of the humidity, the change quantity is converted into an electric signal and is transmitted to the embedded microcomputer control module 8, the embedded microcomputer control module 8 transmits the electric signal to the output module 9, the output module 9 is connected with the display screen, the output module 9 can directly display the content of the humidity in the measured hydrogen on the display screen by measurement and calculation, then the display value is converted into a 4-20 mA current signal according to a certain numerical relation and is transmitted to the computer DCS system, the measured hydrogen enters the gas outlet 55 through the humidity sampling protection cavity 52 and passes through the flowmeter 6, the flowmeter 6 is mainly used for indicating the gas flow, and can monitor the flow of the hydrogen in the measuring pipeline in real time, and the hydrogen enters the second side branch pipeline 13 through the measuring pipeline 11, and the regulating valve 3 and the stop valve 2 are arranged between the measuring pipeline 11 and the second side branch pipeline 13, so that the stop valve 3 can be used for closing the pipeline on site during maintenance, and then the hydrogen is converged into the hydrogen emptying pipeline 10 through the second side branch pipeline 13.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An apparatus for measuring hydrogen humidity, characterized by: the device comprises a hydrogen inlet pipeline (1) and a hydrogen evacuation pipeline (10), wherein the hydrogen inlet pipeline (1) is connected with a first side branch pipeline (12), the hydrogen evacuation pipeline (10) is connected with a second side branch pipeline (13), the first side branch pipeline (12) is communicated with the second side branch pipeline (13) through a measuring pipeline (11), a field sampling unit is further arranged between the hydrogen inlet pipeline (1) and the hydrogen evacuation pipeline (10) and is connected in series on the measuring pipeline (11), the field sampling unit comprises a filter (4) and a humidity transmitter (5), a control unit is connected on the humidity transmitter (5), hydrogen to be measured humidity flows into the first side branch pipeline (12) through the hydrogen inlet pipeline (1) and then flows into the measuring pipeline (11) from the first side branch pipeline (12), the filter (4) can be with the oil and liquid separation of the hydrogen of volume of awaiting measuring humidity discharge, the rethread humidity transmitter (5) carry out hydrogen humidity and detect, convey the testing result to the control unit, the control unit is with testing result analysis and output, and the hydrogen that detects through humidity passes through again the second side branch pipeline (13) flow in hydrogen evacuation pipeline (10).

2. An apparatus for measuring the humidity of hydrogen gas as claimed in claim 1, wherein: be equipped with humidity transducer (51) in humidity transducer (5), humidity transducer (51) with the control unit links to each other, humidity transducer (51) below is equipped with humidity sample protection chamber (52), humidity sample protection chamber (52) with the inner chamber of humidity transducer (5) is linked together.

3. An apparatus for measuring the humidity of hydrogen gas as claimed in claim 2, wherein: the control unit comprises an output module (9) and an embedded microcomputer control module (8), wherein the embedded microcomputer control module (8) is respectively connected with the output module (9) and the humidity sensor (51).

4. An apparatus for measuring the humidity of hydrogen gas as claimed in claim 1, wherein: the filter is characterized in that a filter element (41) is arranged in the filter (4), a drain outlet (42) is formed in the lower end of the filter (4), and the drain outlet (42) is communicated with the inner cavity of the filter (4).

5. An apparatus for measuring the humidity of hydrogen gas as claimed in claim 1, wherein: the side of humidity transmitter (5) is equipped with flowmeter (6), flowmeter (6) are established ties and are in on measuring tube (11).

6. An apparatus for measuring the humidity of hydrogen gas as claimed in claim 5, wherein: the side of the filter (4) and the side of the flowmeter (6) are provided, and the measuring pipeline (11) is connected with the regulating valve (3) and the stop valve (2) in series.

7. An apparatus for measuring the humidity of hydrogen gas as claimed in claim 1, wherein: the included angle between the first side branch pipeline (12) and the hydrogen inlet pipeline (1) is 30-45 degrees, and the included angle between the second side branch pipeline (13) and the hydrogen emptying pipeline (10) is 30-45 degrees.