CN216844636U - Corrosion monitoring and rust-proof protection device for waste heat boiler during shutdown - Google Patents
Corrosion monitoring and rust-proof protection device for waste heat boiler during shutdown Download PDFInfo
- Publication number
- CN216844636U CN216844636U CN202122976111.4U CN202122976111U CN216844636U CN 216844636 U CN216844636 U CN 216844636U CN 202122976111 U CN202122976111 U CN 202122976111U CN 216844636 U CN216844636 U CN 216844636U
- Authority
- CN
- China
- Prior art keywords
- air
- corrosion
- environment detection
- chamber
- air environment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
A corrosion monitoring and corrosion prevention protection device for a waste heat boiler during a shutdown period comprises an air environment detection system device, a corrosion simulation test system device and a vacuum pumping system; the air environment detection system device comprises an air environment detection chamber; the parallel air exhaust connecting pipes are communicated with the air environment detection chamber; the corrosion simulation test system device comprises a corrosion test chamber communicated with the upper part of the air environment detection chamber; suspending corrosion hanging sheets in the corrosion test chamber; the upper part of the corrosion test chamber is communicated with a corrosion test chamber exhaust pipe; the vacuum pumping system device comprises an exhaust pipe of an air exhaust fan, which is communicated with the bottom of the air environment detection chamber; the power supply and the system controller are connected with the electric control equipment; the air environment detection system device can be used for monitoring the temperature, humidity and pressure of air in the thermal equipment during the stop (standby) period of the waste heat boiler, monitoring the corrosion condition of metal materials, enhancing the corrosion protection effectiveness by a vacuumizing method and having the characteristics of more effectiveness and accuracy.
Description
Technical Field
The utility model relates to a corrosion protection device for shutdown (standby) thermal equipment of a power plant, in particular to a corrosion monitoring and corrosion protection device for a waste heat boiler during a shutdown period.
Background
At present, the commonly adopted shutdown protection methods of a thermal generator set comprise ammonia water ammoniation, hot furnace water discharge and residual heat drying, the principle is that the pH value of water vapor is improved by adding ammonia, and simultaneously, the residual heat of a hearth is used for drying the heated surface of a boiler in the water discharge process of the boiler, so that the boiler is protected. However, the method has the problem that accumulated water in thermal equipment, particularly the bottom of a superheater and other parts, cannot be completely drained due to different water discharge pressures and temperatures of various power plant operations, so that shutdown corrosion is caused. Therefore, the ammonia alkalization drying method cannot achieve an ideal anti-corrosion protection effect generally, even serious oxygen corrosion, pitting corrosion and the like are caused due to poor water quality of accumulated water, pipe explosion accidents are easily caused after starting, and the safe and stable operation of equipment is seriously threatened.
DL/T956 anti-corrosion guide rule for thermal power plant stopping (standby) thermal equipment stipulates that the relative air humidity is less than 60% in a hot furnace water discharging residual heat drying method, and power plant personnel generally adopt hygrometers at the positions of an air door, an exhaust steam door and a water drain door of related equipment to carry out on-site detection, so that the internal humidity of actual equipment of a power plant cannot be represented, and for areas with high southern humidity, natural ventilation cannot meet the requirement that the humidity is less than 60%. Furthermore, the standard does not describe a method for quantitatively monitoring off-stream corrosion.
Therefore, the utility model provides a corrosion monitoring and anti-corrosion protection device for a waste heat boiler during the shutdown period, in order to more effectively and accurately monitor the temperature, humidity and corrosion condition of metal materials in the boiler during the shutdown (standby) period of the unit and enhance the corrosion protection effectiveness by a vacuumizing method.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide a corrosion monitoring and corrosion prevention protection device during the stop period of a waste heat boiler, which is used for monitoring the temperature, humidity and metal material corrosion conditions in the thermodynamic equipment during the stop (standby) period of the waste heat boiler, and enhancing the corrosion protection effectiveness by a vacuumizing method and has the characteristics of more effectiveness and accuracy.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a corrosion monitoring and corrosion protection device during the stop period of a waste heat boiler comprises an air environment detection system device, a corrosion simulation test system device and a vacuum pumping system which are fixed in an equipment cabinet 15;
the air environment detection system device comprises an air environment detection chamber 5; the parallel air suction connecting pipe A1 and the air suction connecting pipe B3 are respectively communicated with the air environment detection chamber 5 through the air suction inlet valve A2 and the air suction inlet valve B4 which respectively correspond to the air suction connecting pipe A1 and the air suction connecting pipe B3;
The corrosion simulation test system device comprises a corrosion test chamber 13 communicated with the upper part of the air environment detection chamber 5, and a corrosion test chamber air inlet valve 6 is arranged on a communicated pipeline; hanging a corrosion hanging piece 14 in the corrosion testing chamber 13; the side surface of the upper part of the corrosion test chamber 13 is communicated with a corrosion test chamber exhaust pipe 7;
the vacuum pumping system device comprises an exhaust pipe 11 of the air exhaust fan communicated with the bottom of the air environment detection chamber 5, and an air intake valve 18, an air exhaust fan 17 and an exhaust valve 16 of the air exhaust fan are sequentially arranged on the communicated pipeline.
And the exhaust pipe 7 of the corrosion test chamber is provided with a micro air pump 9 and a gas outlet valve 8 of the corrosion test chamber.
The instrument, the air exhaust fan 17 and the micro air exhaust pump 9 in the air environment detection chamber 5 are respectively connected with a power supply and system controller 10 through a power supply and communication line 12.
And a temperature sensor, a humidity sensor and a gas pressure sensor are arranged in the air environment detection chamber 5.
The power supply and system controller 10 is provided with a temperature, humidity and pressure display panel of the air environment detection chamber 5, an air exhaust fan 17, a state display panel of the micro air exhaust pump 9 and control keys.
Compared with the prior art, the utility model has the following beneficial technical effects:
The utility model provides a set of device for accurately monitoring the temperature, humidity and corrosion condition of metal materials in a furnace during the shutdown and standby periods of a unit, and solves the problems that in the current process of shutdown and humidity supervision, a handheld hygrometer at an exhaust port detects no closed environment, the humidity error is large, and the shutdown protection work cannot be guided. The device can accurately obtain the parameters of temperature, pressure and humidity of air in the furnace, and monitors the corrosion condition through the corrosion hanging piece, thereby providing scientific basis for the implementation of the blowing-out protection scheme. In addition, the device can accelerate the evaporation of water vapor, reduce the humidity, reduce the oxygen content in the furnace, reduce the risk of oxygen corrosion and enhance the effectiveness of corrosion protection by a vacuumizing method.
Drawings
Fig. 1 is a schematic structural diagram of the apparatus according to the embodiment of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the utility model.
Referring to fig. 1, the corrosion monitoring and corrosion protection device for the waste heat boiler during the period of being out of service comprises an air environment detection system device, a corrosion simulation test system device and a vacuum pumping system which are fixed in an equipment cabinet 15.
The air environment detection system device comprises an air environment detection chamber 5; the parallel air suction connecting pipe A1 and the air suction connecting pipe B3 are respectively communicated with the air environment detection chamber 5 through the air suction inlet valve A2 and the air suction inlet valve B4 which respectively correspond to the air suction connecting pipe A1 and the air suction connecting pipe B3; the air enters the air environment detection chamber 5 through the air suction inlet valve A2 by the air suction connecting pipe A1, and the parallel air suction connecting pipe B3 enters the air environment detection chamber 5 through the air suction inlet valve B4; the suction connecting pipe A1, the suction inlet valve A2 and the air environment detection chamber 5 are connected in a welding or thread mode through pipes; the suction connecting pipe B3, the suction inlet valve B4 and the air environment detection chamber 5 are connected by pipes in a welding or threaded manner.
The corrosion simulation test system device comprises a corrosion test chamber 13 communicated with the upper part of the air environment detection chamber 5, and a corrosion test chamber air inlet valve 6 is arranged on a communicated pipeline; hanging a corrosion hanging piece 14 in the corrosion testing chamber 13; gas enters the corrosion testing chamber 13 from the air environment detecting chamber 5 through the corrosion testing chamber air inlet valve 6; the side surface of the upper part of the corrosion test chamber 13 is communicated with the exhaust pipe 7 of the corrosion test chamber in a welding or thread mode through a pipeline; the exhaust pipe 7 of the corrosion test chamber is provided with a micro air pump 9 and a gas outlet valve 8 of the corrosion test chamber, and the exhaust is discharged through the micro air pump 9, the gas outlet valve 8 of the corrosion test chamber and the exhaust pipe 7 of the corrosion test chamber in sequence.
The vacuum pumping system device comprises an exhaust pipe 11 of the air exhaust fan, which is communicated with the bottom of the air environment detection chamber 5, and an air inlet valve 18 of the air exhaust fan, an air exhaust fan 17 and an exhaust valve 16 of the air exhaust fan are sequentially arranged on a communicated pipeline; the installation mode is welding or screw thread.
And a temperature sensor, a humidity sensor and a gas pressure sensor are arranged in the air environment detection chamber 5.
The instrument, the air exhaust fan 17 and the micro air exhaust pump 9 in the air environment detection chamber 5 are respectively connected with a power supply and system controller 10 through a power supply and communication line 12.
The power supply and system controller 10 is provided with a temperature, humidity and pressure display panel of the air environment detection chamber 5, an air exhaust fan 17, a state display panel of the micro air exhaust pump 9 and control keys.
The working principle of the utility model is as follows:
the utility model is connected with the exhaust pipe openings behind the air exhaust doors of the superheater and the reheater, and enters the air environment detection chamber 5 through an air exhaust connecting pipe A1 through an air exhaust inlet valve A2, and an air exhaust connecting pipe B3 connected in parallel enters the air environment detection chamber 5 through an air exhaust inlet valve B4; the various sensors in the air environment detection chamber 5 display temperature, humidity, pressure information in the power supply and system controller 10.
Gas enters the corrosion testing chamber 13 from the air environment detecting chamber 5 through the corrosion testing chamber air inlet valve 6; the air environment in the corrosion test chamber 13 is consistent with the air environment parameter in the superheater or reheater pipe connected with the air extraction connecting pipe, a test piece corrosion simulation test is carried out in the environment, and the corrosion condition of the corrosion coupon 14 is monitored; and finally, exhausting the exhaust gas sequentially through a micro air pump 9, an air outlet valve 8 of the corrosion test chamber and an exhaust pipe 7 of the corrosion test chamber.
The vacuum pumping system device pumps the air environment detection chamber 5 through the air pumping fan 17, and the water vapor evaporation is accelerated through a vacuum pumping method, so that the humidity is reduced, the oxygen content in the furnace is reduced, and the risk of oxygen corrosion is reduced.
Claims (5)
1. A corrosion monitoring and corrosion prevention protection device during the stop period of a waste heat boiler is characterized by comprising an air environment detection system device, a corrosion simulation test system device and a vacuum pumping system which are fixed in an equipment cabinet (15);
the air environment detection system device comprises an air environment detection chamber (5); the parallel air-extracting connecting pipe A (1) and the air-extracting connecting pipe B (3) are respectively communicated with the air environment detection chamber (5) through the air-extracting inlet valve A (2) and the air-extracting inlet valve B (4) which respectively correspond to the air-extracting connecting pipe A and the air-extracting connecting pipe B;
The corrosion simulation test system device comprises a corrosion test chamber (13) communicated with the upper part of the air environment detection chamber (5), and a corrosion test chamber air inlet valve (6) is arranged on a communicated pipeline; a corrosion hanging sheet (14) is hung in the corrosion test chamber (13); the side surface of the upper part of the corrosion test chamber (13) is communicated with a corrosion test chamber exhaust pipe (7);
the vacuum pumping system device comprises an exhaust pipe (11) of the air pumping fan, wherein the exhaust pipe is communicated with the bottom of the air environment detection chamber (5), and an air inlet valve (18) of the air pumping fan, an air pumping fan (17) and an exhaust valve (16) of the air pumping fan are sequentially arranged on a communicated pipeline.
2. The device for monitoring corrosion and protecting corrosion during the period of the waste heat boiler being out of service according to claim 1, characterized in that a micro air pump (9) and a corrosion test chamber air outlet valve (8) are arranged on the corrosion test chamber exhaust pipe (7).
3. The device for corrosion monitoring and protection during the period of waste heat boiler shutdown as claimed in claim 1, characterized in that the air environment detection chamber (5) is installed with a temperature sensor, a humidity sensor and a gas pressure sensor.
4. A corrosion monitoring and protection device against corrosion during waste heat boiler shutdown according to any of claims 1-3, characterized in that the instrument, the air extractor fan (17) and the micro air pump (9) in the air environment detection chamber (5) are respectively connected with the power supply and system controller (10) through power supply and communication lines (12).
5. The device for corrosion monitoring and corrosion protection during the period of waste heat boiler shutdown as claimed in claim 4, characterized in that the power supply and system controller (10) is provided with a temperature, humidity and pressure display panel of the air environment detection chamber (5), an air extraction fan (17), a micro air extraction pump (9) status display panel and control keys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122976111.4U CN216844636U (en) | 2021-11-30 | 2021-11-30 | Corrosion monitoring and rust-proof protection device for waste heat boiler during shutdown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122976111.4U CN216844636U (en) | 2021-11-30 | 2021-11-30 | Corrosion monitoring and rust-proof protection device for waste heat boiler during shutdown |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216844636U true CN216844636U (en) | 2022-06-28 |
Family
ID=82104216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122976111.4U Active CN216844636U (en) | 2021-11-30 | 2021-11-30 | Corrosion monitoring and rust-proof protection device for waste heat boiler during shutdown |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216844636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116359119A (en) * | 2023-03-27 | 2023-06-30 | 浙江大学 | Pipeline corrosion prevention test system based on thermoelectric chemical battery waste heat utilization and control method |
-
2021
- 2021-11-30 CN CN202122976111.4U patent/CN216844636U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116359119A (en) * | 2023-03-27 | 2023-06-30 | 浙江大学 | Pipeline corrosion prevention test system based on thermoelectric chemical battery waste heat utilization and control method |
| CN116359119B (en) * | 2023-03-27 | 2023-10-13 | 浙江大学 | Pipeline corrosion prevention test system based on thermoelectric chemical battery waste heat utilization and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216844636U (en) | Corrosion monitoring and rust-proof protection device for waste heat boiler during shutdown | |
| CN108644016B (en) | Gas-steam combined cycle set therrmodynamic system stops spare corrosion protection technique | |
| CN113945336A (en) | Condenser leakage pipe online positioning system and method based on condenser steam extraction detection | |
| CN113237824A (en) | Boiler steam-water system corrosion simulation experiment device and experiment method thereof | |
| CN103335937A (en) | Simulation and accelerated testing device and method for oxidation performance of high-temperature-resisting water vapor | |
| KR100958939B1 (en) | Fuel gas moisture monitoring apparatus and method of monitoring fuel gas moisture | |
| CN1291201C (en) | Absorption chiller system and method of leakage detection and position | |
| CN106769814A (en) | A kind of low-temperature corrosion detecting system and its detection method | |
| CN215812321U (en) | Thermal equipment vapor phase corrosion inhibitor evaluation device | |
| CN217443124U (en) | Boiler steam-water system corrosion simulation experiment device | |
| CN209795438U (en) | Steam car washer | |
| CN204986957U (en) | Boiler equipment | |
| CN216770954U (en) | Leakage detection device is revealed to thermal power factory condenser pipe | |
| CN209945054U (en) | System device for changing water cooling of condenser of steam turbine generator unit into air cooling | |
| CN208860155U (en) | A kind of device reducing power plant Heating Season condensed water dissolved oxygen content | |
| CN207819678U (en) | Automatic water replenishing system | |
| CN102853976B (en) | Online leakage detection method and device thereof for heat treatment furnace radiant tube | |
| CN202709582U (en) | Temperature control device for inlet of industrial refrigeration compressor | |
| CN108548169A (en) | A kind of combined cycle generating unit boiler Shut-down Protection system and application method | |
| CN218846440U (en) | Electric heating hot water boiler | |
| CN101363617A (en) | Closed type condensate water recovery device | |
| CN203366166U (en) | Hot air stove fire detection and prevention device | |
| CN211394636U (en) | Gas phase protection device for thermodynamic equipment | |
| CN201826905U (en) | Anti-corrosion device for adjusting steam-extraction type single-cylinder turbine | |
| CN212456810U (en) | Novel steam temperature and pressure reducing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |