阅读说明：本技术 在线高精度脱硫脱硝烟气湿度检测方法 (On-line high-precision desulfurization and denitrification flue gas humidity detection method ) 是由 钱钢 侯海军 堵银忠 曹磊 于 2019-10-31 设计创作，主要内容包括：本发明一种在线高精度脱硫脱硝烟气湿度检测方法,检测时,在脱硫脱硝烟囱上开设有检测口,插筒(1)穿过检测口将集气筒(2)安装于烟囱内后,利用法兰盘(1.1)将湿度仪整体固定于烟囱上。本发明一种在线高精度脱硫脱硝烟气湿度检测方法,具有测量精度高的优点。(The invention relates to an on-line high-precision desulfurization and denitrification flue gas humidity detection method, during detection, a detection port is formed in a desulfurization and denitrification chimney, an insertion cylinder (1) penetrates through the detection port to install a gas collecting cylinder (2) in the chimney, and then a flange plate (1.1) is used for integrally fixing a hygrograph on the chimney. The online high-precision desulfurization and denitrification flue gas humidity detection method has the advantage of high measurement precision.)

1. An online high-precision desulfurization and denitrification flue gas humidity detection method is characterized by comprising the following steps: the method is based on a high-precision desulfurization and denitrification flue gas humidity instrument, the high-precision desulfurization and denitrification flue gas humidity instrument comprises an inserting cylinder (1), a flange plate (1.1) is sleeved in the middle of the outer wall of the inserting cylinder (1), one end of the inserting cylinder (1) is connected with a gas collecting cylinder (2), the other end of the inserting cylinder is connected with a wiring terminal (6), one end of the gas collecting cylinder (2) is connected with the cavity of the inserting cylinder (1), the other end of the gas collecting cylinder is provided with a plug (3), air holes (2.1) are uniformly formed in the gas collecting cylinder (2), a humidity sensor (4) is arranged in the gas collecting cylinder (2), one end of a cable (5) inserted into the inserting cylinder (1) is connected with the humidity sensor (4), and the other end of the cable is; during detection, a detection port is formed in the desulfurization and denitrification chimney, the inserting cylinder (1) penetrates through the detection port to install the gas collecting cylinder (2) in the chimney, and the flange plate (1.1) is used for integrally fixing the hygrograph on the chimney.

2. The on-line high-precision desulfurization and denitrification flue gas humidity detection method as claimed in claim 1, wherein the method comprises the following steps: an annular groove is arranged on the outer cylinder wall of the gas collecting cylinder (2), the gas hole (2.1) is positioned in the annular groove, and a dustproof filter screen (8) with an annular structure is embedded in the annular groove.

3. The on-line high-precision desulfurization and denitrification flue gas humidity detection method as claimed in claim 1, wherein the method comprises the following steps: the humidity sensor (4) is positioned on the central axis of the gas collecting cylinder (2), and the air holes (2.1) are uniformly surrounded on the periphery of the gas collecting cylinder (2).

4. The on-line high-precision desulfurization and denitrification flue gas humidity detection method as claimed in claim 1, wherein the method comprises the following steps: one end of the cable (5) close to the wiring terminal (6) is sleeved with a fastening sleeve (7), an external thread is arranged on the outer wall of the fastening sleeve (7), an internal thread is arranged on the inner wall of one end of the inserting cylinder (1) close to the wiring terminal (6), and the external thread of the fastening sleeve (7) is arranged in the internal thread of the inserting cylinder (1) in a rotating mode.

5. The on-line high-precision desulfurization and denitrification flue gas humidity detection method as claimed in claim 1, wherein the method comprises the following steps: a connecting flange is arranged on the outer wall of one end, close to the wiring terminal (6), of the inserting barrel (1), and the wiring terminal (6) is fixed on the connecting flange through bolts.

6. The on-line high-precision desulfurization and denitrification flue gas humidity detection method as claimed in claim 1, wherein the method comprises the following steps: the plug (3) is of an inwards-concave conical structure.

Technical Field

The invention relates to a humidity meter, in particular to an instrument for accurately monitoring the humidity of desulfurization and denitrification flue gas in a chimney on line, and belongs to the technical field of environmental equipment.

Background

At present, in the process of discharging flue gas from a power plant and the like, the flue gas discharged through a chimney needs to be subjected to desulfurization and denitrification operations, and the commonly used wet desulfurization and denitrification is sensitive to the humidity of the flue gas, so that the desulfurization and denitrification effects are obviously improved due to proper humidity; therefore, humidity control of the flue gas is required so that it is controlled within a reasonable range. The conventional detection mode is that a humidity sensor is simply arranged on the inner wall of the chimney for monitoring, but the sensor is not easy to fix and is easy to swing along with smoke, so that the precision of the sensor is influenced; the sensor is easily polluted by impurities in the flue gas, so that the precision of the sensor is further influenced; for this reason, a humidity detection method capable of solving the above problems is desired.

Disclosure of Invention

The invention aims to overcome the defects and provide an on-line high-precision method for detecting the humidity of the desulfurization and denitrification flue gas, which has high measurement precision.

The purpose of the invention is realized as follows:

an online high-precision desulfurization and denitrification flue gas humidity detection method is based on a high-precision desulfurization and denitrification flue gas humidity instrument and comprises an insertion cylinder, wherein a flange plate is sleeved in the middle of the outer wall of the insertion cylinder, one end of the insertion cylinder is connected with a gas collecting cylinder, the other end of the insertion cylinder is connected with a connecting terminal, one end of the gas collecting cylinder is connected with a cavity of the insertion cylinder, the other end of the gas collecting cylinder is provided with a plug, gas holes are uniformly formed in the gas collecting cylinder, a humidity sensor is arranged in the gas collecting cylinder, one end of a cable inserted into the insertion cylinder is connected with the humidity sensor, and the other end of; during detection, a detection port is formed in the desulfurization and denitrification chimney, the inserting cylinder penetrates through the detection port to install the gas collecting cylinder in the chimney, and the flange plate is used for integrally fixing the hygronom on the chimney.

Furthermore, an annular groove is arranged on the wall of the outer cylinder of the gas collecting cylinder, the gas hole is positioned in the annular groove, and a dustproof filter screen with an annular structure is embedded in the annular groove.

Furthermore, the humidity sensor is positioned on the central axis of the gas collecting cylinder, and the air holes are uniformly surrounded on the periphery of the gas collecting cylinder.

Furthermore, a fastening sleeve is sleeved at one end, close to the wiring terminal, of the cable, an external thread is arranged on the outer wall of the fastening sleeve, an internal thread is arranged on the inner wall of one end, close to the wiring terminal, of the insertion barrel, and the external thread of the fastening sleeve is arranged in the internal thread of the insertion barrel in a screwing mode.

Furthermore, a connecting flange is arranged on the outer wall of one end, close to the wiring terminal, of the plug-in cylinder, and the wiring terminal is fixed on the connecting flange through bolts.

Furthermore, the plug is of an inward-concave conical structure.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the humidity meter is arranged in the gas collecting cylinder to position and measure the humidity meter, so that direct contact with flue gas is avoided, the stability of the humidity meter during detection is ensured, and the precision is improved; and through installing additional of dustproof filter screen, can effectually avoid the interference of impurity in the flue gas, further improved the precision that detects.

Drawings

FIG. 1 is a schematic structural diagram of a high-precision flue gas hygrometer for desulfurization and denitrification in the present invention.

FIG. 2 is a sectional view of a high-precision flue gas hygrometer for desulfurization and denitrification in accordance with the present invention.

Wherein:

the device comprises an inserting cylinder 1, a gas collecting cylinder 2, a plug 3, a humidity sensor 4, a cable 5, a wiring terminal 6, a fastening sleeve 7 and a dustproof filter screen 8;

1.1 of a flange plate;

air holes 2.1.

Detailed Description

Referring to fig. 1 and 2, the invention relates to an online high-precision desulfurization and denitrification flue gas humidity detection method, which is based on a high-precision desulfurization and denitrification flue gas humidity instrument and comprises an insertion cylinder 1, wherein a flange plate 1.1 is sleeved in the middle of the outer wall of the insertion cylinder 1, one end of the insertion cylinder 1 is connected with a gas collecting cylinder 2, the other end of the insertion cylinder 1 is connected with a wiring terminal 6, one end of the gas collecting cylinder 2 is connected with the cavity of the insertion cylinder 1, the other end of the gas collecting cylinder is provided with a plug 3, the gas collecting cylinder 2 is uniformly provided with gas holes 2.1, a humidity sensor 4 is arranged in the gas collecting cylinder 2, one end of a cable 5 inserted in the insertion cylinder 1 is connected with a humidity sensor 4, and;

during detection, a detection port is formed in the desulfurization and denitrification chimney, the inserting cylinder 1 penetrates through the detection port to install the gas collecting cylinder 2 in the chimney, and the humidometer is integrally fixed on the chimney through the flange plate 1.1;

furthermore, an annular groove is arranged on the outer cylinder wall of the gas collecting cylinder 2, the gas hole 2.1 is positioned in the annular groove, and a dustproof filter screen 8 with an annular structure is embedded in the annular groove; thereby being convenient for filtering impurities, oil mist and the like in the flue gas;

further, the humidity sensor 4 is positioned on the central axis of the gas collecting cylinder 2, and the air holes 2.1 are uniformly surrounded on the periphery of the gas collecting cylinder 2;

furthermore, a fastening sleeve 7 is sleeved at one end of the cable 5 close to the wiring terminal 6, an external thread is arranged on the outer wall of the fastening sleeve 7, an internal thread is arranged on the inner wall of the end of the insertion cylinder 1 close to the wiring terminal 6, and the external thread of the fastening sleeve 7 is screwed in the internal thread of the insertion cylinder 1, so that the cable 5 is fastened;

furthermore, a connecting flange is arranged on the outer wall of one end of the insertion cylinder 1 close to the wiring terminal 6, and the wiring terminal 6 is fixed on the connecting flange through a bolt;

furthermore, the plug 3 is of an inward-concave conical structure, so that the effects of gathering and diffusing the smoke are achieved, and the smoke which rises from the lower part and enters the gas collecting cylinder 2 gathers towards the humidity sensor 4 to be detected conveniently; after detection is finished, the liquid can quickly escape upwards; the taper of the taper structure is matched with the prefabricated parameters in the back-end server, and when the taper is changed, the preset value in the program needs to be adjusted;

in addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.