Steam-water sampling pressure buffering device

Abstract

The utility model relates to the technical field of thermal medium sampling detection, in particular to a steam-water sampling pressure buffer device, which comprises a condenser, a filter, a three-way valve, a buffer tank and an online chemical instrument, a boiler sample water inlet pipeline is fixedly communicated with an inlet of the condenser, and a first processing pipeline is fixedly communicated between an outlet of the condenser and an inlet of the filter. A second treatment pipeline is fixedly communicated between the filter outlet and the first inlet of the three-way valve. The device is reasonable and compact in structure and convenient to use, condensed and filtered boiler sample water is conveyed to the three-way valve to be shunted, and part of the boiler sample water is conveyed to the buffer tank through the pressure buffer pipeline to be subjected to pressure division; the boiler sample water subjected to pressure reduction is conveyed to the online chemical instrument through the three-way valve and the sample water detection pipeline for index detection, so that the service life of the online chemical instrument is prolonged, the maintenance frequency of the pressure guide pipeline is reduced, and the problems that instrument equipment is damaged by high-temperature and high-pressure sample water, and the accuracy of measured data is influenced are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal medium sampling and detection, and is a steam-water sampling pressure buffer device. Background Art

[0002] In thermal power plants, the steam-water online analysis system is an important monitoring method for detecting various data of boiler water pressure. However, since the steam-water online sodium meter, silicon meter and other instruments have certain requirements for the boiler side sample water pressure, and the steam-water system sample water pressure is still relatively high after condensation, it will cause damage to the internal instrument and measurement errors. In addition, due to the excessive pressure of the pressure pipe, maintenance personnel often maintain the pressure pipe, which increases the maintenance workload and cost, and also affects the normal online monitoring work. At present, there is no pressure buffer device suitable for field conditions. Summary of the invention

[0003] The utility model provides a soda sampling pressure buffer device, which overcomes the deficiencies of the prior art and can effectively solve the problem of damage to instrument equipment and influence on the accuracy of measurement data during the prior soda sampling test.

[0004] The technical scheme of the utility model is achieved through the following measures: a steam-water sampling pressure buffer device, comprising a condenser, a filter, a three-way valve, a buffer tank and an online chemical instrument, the condenser inlet is fixedly connected with a boiler sample water inlet pipeline, the condenser outlet is fixedly connected with a first treatment pipeline between the condenser outlet and the filter inlet, the filter outlet and the first inlet of the three-way valve are fixedly connected with a second treatment pipeline, the first outlet of the three-way valve and the online chemical instrument are fixedly connected with a sample water detection pipeline, the second outlet of the three-way valve and the buffer tank inlet are fixedly connected with a pressure buffer pipeline, the bottom outlet of the buffer tank is fixedly connected with a drainage pipeline, and the upper outlet of the buffer tank is fixedly connected with an exhaust pipeline.

[0005] The following are further optimizations and / or improvements to the above utility model technical solution:

[0006] A pressure detector is fixedly installed on the pressure buffer pipeline, and a solenoid valve is fixedly installed on the sample water detection pipeline. The solenoid valve is electrically connected to the pressure detector.

[0007] A water quality detector is fixedly installed on the second processing pipeline, a steam-water main valve is fixedly installed on the boiler sample water inlet pipeline, and the steam-water main valve is electrically connected to the water quality detector.

[0008] The above-mentioned online chemical instruments include conductivity meters, hydrogen conductivity meters, pH meters, dissolved oxygen meters, silicon meters and sodium meters.

[0009] Valves are fixedly installed on the first processing pipeline, the drainage pipeline and the exhaust pipeline.

[0010] The utility model has a reasonable and compact structure and is easy to use. It sends the condensed and filtered boiler sample water to the three-way valve for diversion, sends a part of the boiler sample water to the buffer tank through the pressure buffer pipeline for pressure division, and sends the reduced-pressure boiler sample water to the online chemical instrument through the three-way valve and the sample water detection pipeline for index detection, thereby improving the service life of the online chemical instrument, reducing the maintenance times of the pressure guiding pipeline, and effectively solving the problem of damage to the instrument equipment by the high-temperature and high-pressure sample water, which affects the accuracy of the measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 This is a schematic diagram of the process flow of the utility model.

[0012] Attached Figure 1 The codes are: 1 for condenser, 2 for filter, 3 for three-way valve, 4 for online chemical instrument, 5 for buffer tank, 6 for boiler sample water inlet pipeline, 7 for the first treatment pipeline, 8 for the second treatment pipeline, 9 for pressure buffer pipeline, 10 for sample water detection pipeline, 11 for drainage pipeline, 12 for exhaust pipeline, 13 for solenoid valve, 14 for pressure detector, 15 for steam-water main valve, 16 for water quality detector, and 17 for valve. DETAILED DESCRIPTION

[0013] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0014] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art, such as pressure detectors, water quality detectors and online chemical meters, which are all the equipment known and used in the art.

[0015] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 The layout direction is determined by the

[0016] The present invention is further described below in conjunction with the embodiments and drawings:

[0017] Embodiment 1: As attached Figure 1As shown, the steam-water sampling pressure buffer device includes a condenser 1, a filter 2, a three-way valve 3, a buffer tank 5 and an online chemical instrument 4. The inlet of the condenser 1 is fixedly connected with a boiler sample water inlet pipeline 6, the outlet of the condenser 1 is fixedly connected with a first treatment pipeline 7 between the outlet of the condenser 1 and the inlet of the filter 2, the outlet of the filter 2 and the first inlet of the three-way valve are fixedly connected with a second treatment pipeline 8, the first outlet of the three-way valve 3 and the online chemical instrument 4 are fixedly connected with a sample water detection pipeline 10, the second outlet of the three-way valve 3 and the inlet of the buffer tank 5 are fixedly connected with a pressure buffer pipeline 9, the bottom outlet of the buffer tank 5 is fixedly connected with a drainage pipeline 11, and the upper outlet of the buffer tank 5 is fixedly connected with an exhaust pipeline 12.

[0018] During use, the high-temperature and high-pressure boiler sample water is condensed and filtered. At this time, the pressure of the boiler sample water is between 1.6MPa and 2.0MPa. The condensed and filtered boiler sample water is sent to the three-way valve 3 for diversion, and a part of the boiler sample water is sent to the buffer tank 5 through the pressure buffer pipeline 9 for pressure division. After pressure division, at this time, the pipeline pressure of the pressure buffer pipeline 9 is between 0.2MPa and 0.5MPa. The reduced-pressure boiler sample water is sent to the online chemical instrument 4 through the three-way valve 3 and the sample water detection pipeline 10 for indicator detection, which improves the service life of the online chemical instrument 4, reduces the maintenance times of the pressure pipeline (the second processing pipeline 8), and effectively solves the damage of the high-temperature and high-pressure sample water to the instrument equipment and affects the accuracy of the measurement data.

[0019] The above-mentioned soda sampling pressure buffer device can be further optimized and / or improved according to actual needs:

[0020] Embodiment 2: It is different from Embodiment 1 in that: Figure 1 As shown, a pressure detector 14 is fixedly installed on the pressure buffer pipeline 9, and a solenoid valve 13 is fixedly installed on the sample water detection pipeline 10, and the solenoid valve 13 is electrically connected to the pressure detector 14. Through such an arrangement, the pressure condition of the pipeline is detected by the pressure detector 14. When the pressure reaches the safe detection range of the online chemical instrument 4, the solenoid valve 13 is opened to send the boiler sample water to the online chemical instrument 4 for detection.

[0021] Embodiment 3: It differs from Embodiment 1 to Embodiment 2 in that: Figure 1 As shown, a water quality detector 16 is fixedly installed on the second processing pipeline 8, and a steam-water main valve 15 is fixedly installed on the boiler sample water inlet pipeline 6, and the steam-water main valve 15 is electrically connected to the water quality detector 16. Through such a setting, the boiler sample water filtered by the filter 2 is monitored by the water quality detector 16. When it is detected that there are more impurities in the sample water quality, the steam-water main valve 15 is closed, and the filter element of the filter 2 is prompted to be replaced.

[0022] Embodiment 4: It differs from Embodiments 1 to 3 in that: Figure 1 As shown, the online chemical instrument 4 includes a conductivity meter, a hydrogen conductivity meter, a pH meter, a dissolved oxygen meter, a silicon meter and a sodium meter.

[0023] According to the needs, the installation height of the buffer tank 5 is higher than the installation height of the three-way valve 3. Through such an arrangement, the pressure can also be reduced.

[0024] As needed, such as attached Figure 1 As shown, valves 17 are fixedly installed on the first processing pipeline 7 , the drainage pipeline 11 and the exhaust pipeline 12 .

[0025] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

[0026] The use process of the embodiment of the utility model is as follows: first, the high-temperature and high-pressure boiler sample water is cooled through the condenser 1, and then filtered through the filter 2. Next, the cooled and filtered boiler sample water is sent to the three-way valve 3 through the second processing pipeline 8, and a part of the boiler sample water is sent to the buffer tank 5 through the pressure buffer pipeline 9 for pressure division. Finally, the boiler sample water after pressure reduction is sent to the online chemical instrument 4 through the three-way valve 3 and the sample water detection pipeline 10 for index detection. The buffer tank 5 filled with a certain amount of boiler sample water is vented through the exhaust pipeline 12 and drained through the drainage pipeline 11.

Claims

1. A soda sampling pressure buffer device, characterized in that It includes a condenser, a filter, a three-way valve, a buffer tank and an online chemical instrument. The condenser inlet is fixedly connected to a boiler sample water inlet pipeline, the condenser outlet is fixedly connected to the filter inlet with a first treatment pipeline, the filter outlet and the first inlet of the three-way valve are fixedly connected to a second treatment pipeline, the first outlet of the three-way valve and the online chemical instrument are fixedly connected to a sample water detection pipeline, the second outlet of the three-way valve and the buffer tank inlet are fixedly connected to a pressure buffer pipeline, the bottom outlet of the buffer tank is fixedly connected to a drainage pipeline, and the upper outlet of the buffer tank is fixedly connected to an exhaust pipeline.

2. The soda sampling pressure buffer device according to claim 1, characterized in that A pressure detector is fixedly installed on the pressure buffer pipeline, and a solenoid valve is fixedly installed on the sample water detection pipeline. The solenoid valve and the pressure detector are electrically connected.

3. The soda sampling pressure buffer device according to claim 1 or 2, characterized in that A water quality detector is fixedly installed on the second processing pipeline, a steam-water main valve is fixedly installed on the boiler sample water inlet pipeline, and the steam-water main valve is electrically connected to the water quality detector.

4. The soda sampling pressure buffer device according to claim 1 or 2, characterized in that Online chemical instruments include conductivity meters, hydrogen conductivity meters, pH meters, dissolved oxygen meters, silica meters and sodium meters.

5. The soda sampling pressure buffer device according to claim 3, characterized in that Online chemical instruments include conductivity meters, hydrogen conductivity meters, pH meters, dissolved oxygen meters, silica meters and sodium meters.

6. The soda sampling pressure buffer device according to claim 1, 2 or 5, characterized in that Valves are fixedly installed on the first processing pipeline, the drainage pipeline and the exhaust pipeline.

7. The soda sampling pressure buffer device according to claim 3, characterized in that Valves are fixedly installed on the first processing pipeline, the drainage pipeline and the exhaust pipeline.

8. The soda sampling pressure buffer device according to claim 4, characterized in that Valves are fixedly installed on the first processing pipeline, the drainage pipeline and the exhaust pipeline.

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