CN203365088U - Non-condensable gas measuring device of condenser - Google Patents
Non-condensable gas measuring device of condenser Download PDFInfo
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- CN203365088U CN203365088U CN 201320483928 CN201320483928U CN203365088U CN 203365088 U CN203365088 U CN 203365088U CN 201320483928 CN201320483928 CN 201320483928 CN 201320483928 U CN201320483928 U CN 201320483928U CN 203365088 U CN203365088 U CN 203365088U
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- condenser
- measuring device
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- condensable gas
- gas
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Abstract
The utility model discloses a non-condensable gas measuring device of a condenser. The non-condensable gas measuring device of the condenser comprises: a condenser; a gas leakage tube which is connected with a gas inlet of the condenser; an isolation valve which is arranged at the end of the gas leakage tube and opposite to the condenser; a regulating valve which is arranged on the gas leakage tube and between the isolation valve and the condenser; and a flowmeter, a pressure gauge and a thermometer which are arranged between the regulating valve and the condenser. The isolation valve and the regulating valve of non-condensable gas measuring device of the condenser are controlled and the mass flow rate of the flowmeter is regulated, so that the different vacuum tightness tests of the gas leakage amount can be carried out for twice; and the result can be used to calculate the non-condensable gas flow in the condenser. In the utility model, the non-condensable gas measuring device of the condenser is simple in use, little in investment, and easy in realization, and is high in measurement precision and reliable in measurement result.
Description
Technical field
The utility model relates to condenser, is specifically related to a kind of condenser incondensable gas measurement mechanism.
Background technology
Condenser is the important utility appliance of thermal power plant, and incondensable gas is the key factor that affects the condenser safety and economic operation, determines that the flow of incondensable gas in condenser is significant to condenser optimization operation.Because the blank gas source in condenser is a lot, the gas leakage of existing condenser itself, have again the gas leakage from turbine body and low-pressure heater, is difficult to accurately directly measure its air leakage.
In condenser, the evaluation method about incondensable gas has the vacuum tightness test and two kinds of methods of heat exchanger tube is set in condenser at present.
The method that heat exchanger tube is set in condenser can only obtain air concentration local in condenser, and the representativeness of its measurement result is poor, can not reflect the distribution of air concentration in condenser and the size of blank tolerance comprehensively, and practical application is less.
Adopting at present the method for determining blank tolerance to mainly contain is the vacuum tightness test, by closing vacuum pump, calculate vacuum dropping speed its vacuum tightness is estimated, also can, by heat exchanger tube is set in condenser, by the coefficient of heat transfer of measuring this pipe, blank tolerance be estimated.The vacuum tightness test is simple, directly perceived, and result is also reliable, is the industry standard of estimating blank tolerance.But this method can only provide result qualitatively, result that can not quantitative.
The utility model content
In order to address the above problem, the utility model is optimized condenser arrangement, and a kind of condenser incondensable gas measurement mechanism is provided, and utilizes this device to be measured, can obtain the accurate numerical value of blank tolerance, thereby be conducive to the s cold end system of fired power generating unit is further optimized.
The utility model adopts following technical scheme:
A kind of condenser incondensable gas measurement mechanism, comprising: condenser; The gas leakage pipe be connected with the condenser air intake; Isolation valve, be arranged on the end of the described gas leakage pipe relative with condenser; Variable valve; Be arranged on the gas leakage pipe between isolation valve and condenser; Flowmeter and pressure gauge are installed between described variable valve and condenser.
Further, thermometer also is installed between described variable valve and condenser.
Further, this condenser incondensable gas measurement mechanism, also comprise a vacuum extractor.
By condenser incondensable gas measurement mechanism of the present utility model, the incondensable gas flow that can measure exactly condenser is M.
At first close isolation valve, variable valve, condenser is carried out to conventional vacuum tightness test, obtain its vacuum dropping speed u; Then open isolation valve, regulate variable valve, the mass rate of adjust flux meter is m, increases blank tolerance, and carries out the Tightness Property of Condenser Vacuum System test, obtains its vacuum dropping speed v.
In twice vacuum tightness test, the incondensable gas flow of condenser is respectively M and M+m, and vacuum dropping speed is respectively u and v, because vacuum dropping speed is directly proportional to blank tolerance, obtains thus:
By controlling isolation valve and the variable valve in the utility model, and the mass rate of adjust flux meter, can carry out twice vacuum tightness test that blank tolerance is different, adopt its result to calculate the incondensable gas flow in condenser.
The condenser incondensable gas measurement mechanism that the utility model provides, using method is simple, invest little, easy row; And this measurement device precision is high, measurement result is reliable.
The accompanying drawing explanation
Fig. 1 is the utility model condenser incondensable gas measurement mechanism structural drawing.
Wherein:
1-gas leakage pipe; 2-flowmeter; 3-pressure gauge; 4-thermometer; 5-variable valve; 6-isolation valve; 7-condenser.
Embodiment
In fired power generating unit, due to pressure in the equipment such as turbine low pressure cylinder, low-pressure heater and condenser, lower than atmospheric pressure, the surrounding air system of bleeding, finally collect in condenser, by vacuum extractor, discharges.
The Tightness Property of Condenser Vacuum System test is the method for qualitative definite incondensable gas flow, and this method, by closing the condenser vacuum extractor, measuring vacuum dropping speed, qualitatively judges the content of incondensable gas.
In the vacuum tightness test, when closing vacuum means postpone, incondensable gas can't be discharged, and the incondensable gas content in condenser will raise gradually, and the vacuum in condenser also descends thereupon.When the blank airshed in condenser is zero, the now heat exchange in condenser is not affected by incondensable gas, and its vacuum dropping speed is zero.When the blank airshed in condenser is non-vanishing, in the vacuum tightness test, along with flowing of steam, incondensable gas is enrichment near bleeding point, makes this regional incondensable gas content surpass its critical content, heat exchange inefficacy, and condenser vacuum is descended.The decline rate of condenser vacuum is directly proportional to the expansion rate in heat exchange inefficacy district, and the expansion rate in heat exchange inefficacy district is directly proportional to the blank airshed of condenser.Therefore the vacuum dropping speed that the Tightness Property of Condenser Vacuum System test obtains is directly proportional to its blank airshed.
As shown in Figure 1, the utility model installs gas leakage pipe 1 additional in the air intake position of condenser, and flowmeter 2, pressure gauge 3, thermometer 4, variable valve 5 and isolation valve 6 are installed thereon.If the incondensable gas flow of condenser is M, for measuring this value, in test, at first close isolation valve 6, variable valve 5, condenser is carried out to conventional vacuum tightness test, obtain its vacuum dropping speed u; Then open isolation valve 6, regulate variable valve 5, the mass rate of adjust flux meter is m, increases blank tolerance, and carries out the Tightness Property of Condenser Vacuum System test, obtains its vacuum dropping speed v.
In twice vacuum tightness test, the incondensable gas flow of condenser is respectively M and M+m, and vacuum dropping speed is respectively u and v, because vacuum dropping speed is directly proportional to blank tolerance, obtains thus:
In certain test, utilize condenser incondensable gas measurement mechanism of the present utility model to record u=50Pa/min, v=70Pa/min, m=80kg/h, according to above-mentioned formula, determining blank gas total amount is 200kg/h, empirical tests, this measurement result is true, reliable.
Claims (3)
1. a condenser incondensable gas measurement mechanism, comprising: condenser; The gas leakage pipe be connected with the condenser air intake; Isolation valve, be arranged on the end of the described gas leakage pipe relative with condenser; Variable valve; Be arranged on the gas leakage pipe between isolation valve and condenser; Flowmeter and pressure gauge are installed between described variable valve and condenser.
2. condenser incondensable gas measurement mechanism as claimed in claim 1, is characterized in that, thermometer also is installed between described variable valve and condenser.
3. condenser incondensable gas measurement mechanism as claimed in claim 1, is characterized in that, also comprises a vacuum extractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320483928 CN203365088U (en) | 2013-08-08 | 2013-08-08 | Non-condensable gas measuring device of condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320483928 CN203365088U (en) | 2013-08-08 | 2013-08-08 | Non-condensable gas measuring device of condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203365088U true CN203365088U (en) | 2013-12-25 |
Family
ID=49812834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320483928 Expired - Lifetime CN203365088U (en) | 2013-08-08 | 2013-08-08 | Non-condensable gas measuring device of condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203365088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI607201B (en) * | 2014-11-05 | 2017-12-01 | Ckd Corp | Flow check unit |
| CN111683691A (en) * | 2018-02-06 | 2020-09-18 | 恩德斯+豪斯流量技术股份有限公司 | Method and device for detecting a non-condensable portion of an at least partially gaseous medium |
-
2013
- 2013-08-08 CN CN 201320483928 patent/CN203365088U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI607201B (en) * | 2014-11-05 | 2017-12-01 | Ckd Corp | Flow check unit |
| CN111683691A (en) * | 2018-02-06 | 2020-09-18 | 恩德斯+豪斯流量技术股份有限公司 | Method and device for detecting a non-condensable portion of an at least partially gaseous medium |
| US11747293B2 (en) | 2018-02-06 | 2023-09-05 | Endress+Hauser Flowtec Ag | Method and device for detecting a non-condensable portion of a medium which is at least in part gaseous |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG ENVIRONMENT INDUSTRY GROUP Co.,Ltd. Patentee after: DATANG (BEIJING) ENERGY MANAGEMENT Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Patentee before: DATANG (BEIJING) ENERGY MANAGEMENT Co.,Ltd. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Patentee after: DATANG (BEIJING) ENERGY MANAGEMENT Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. Patentee before: DATANG (BEIJING) ENERGY MANAGEMENT Co.,Ltd. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. Patentee after: DATANG (BEIJING) ENERGY MANAGEMENT Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: CHINA DATANG GROUP ENVIRONMENT TECHNOLOGY CO.,LTD. Patentee before: DATANG (BEIJING) ENERGY MANAGEMENT Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
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| CX01 | Expiry of patent term |