CN108561999A - A kind of novel cable work well real time intelligent control fault pre-alarming device - Google Patents

Abstract

The invention discloses a kind of novel cable work well real time intelligent control fault pre-alarming devices, including receiving computer on underground monitoring device, axial flow blower, governor and well, the underground monitoring device includes shell, microcontroller, headlamp, gas sensor, Temperature Humidity Sensor, liquid crystal display, wireless module and audible-visual annunciator；The governor is connected with the axial flow blower；The governor is communicated wirelessly by the wireless module and the microcontroller；Computer is received on the well to communicate wirelessly by the wireless module and the microcontroller.The novel cable work well real time intelligent control fault pre-alarming device of the present invention realizes that the integration that monitor and divulge information in real time of work well intraoral illumination, toxic and harmful gas also considerably increases the safety coefficient of operating personnel while guarantee smoothly completes work.

Description

A new type of cable well real-time intelligent monitoring fault early warning device

technical field

The invention relates to a novel real-time intelligent monitoring fault early warning device for cable wells.

Background technique

The cleaning of the cable well, the production of the downhole joint during fault repair, and the identification of the line are all part of the daily maintenance work of the power cable inspection team, all of which require downhole operations. However, due to the long-term closure of the cable well, there are a lot of toxic, harmful, explosive and many other gases in the underground, which seriously threatens the life safety of the operators. Requirements), and then use the gas detector to detect that the downhole gas is qualified, and the operator can go down the well to carry out operations.

The traditional operation process is as follows: When operating underground, operators need to carry lighting fixtures, and the ventilation system should be kept open. After one hour of operation, the underground gas must be re-tested to be qualified before continuing to operate. The problems that exist are: 1) When working underground, the operator carries a head-mounted lighting fixture. Due to the limited battery capacity, the battery life is weak when working for a long time, and the brightness of the lighting is sometimes difficult to meet the requirements of safety regulations; 2) Underground Toxic, harmful, and explosive gases cannot be detected in real time, and sometimes operators will ignore the requirements for gas measurement once an hour stipulated in the regulations, especially when there are garbage stations, gas pipelines and other dangerous sources near the operation point, it is impossible to guarantee the gas performance in the well. Satisfying the safety operation requirements for a long time seriously threatens the life safety of the operators; 3) The larger the blades of the fan, the greater the air volume; Normally open, but because the blower generally chooses a non-adjustable AC motor, when the underground operators are working and the newly generated toxic and harmful gas suddenly exceeds the standard, the toxic and harmful gas cannot be quickly removed to ensure the maximum operation. personnel safety.

Therefore, in order to solve the above problems encountered in traditional operations, our Innolux team brainstormed and jointly developed a set of "integrated portable devices for lighting, real-time monitoring of toxic and harmful gases, and ventilation in industrial wells", which solved the above problems at the same time , also adding more functions, while ensuring the smooth completion of the work, it also greatly increases the safety factor of the operators.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art and provide a new type of real-time intelligent monitoring and early warning device for cable wells, which can realize the integration of lighting in the well, real-time monitoring of toxic and harmful gases, and ventilation, and ensure the smooth completion of work. Greatly increased the safety factor of workers.

The technical solution to achieve the above purpose is: a new type of cable well real-time intelligent monitoring fault early warning device, including downhole monitoring device, axial flow fan, governor and uphole receiving computer, wherein:

The downhole monitoring device includes a housing, a single-chip microcomputer, a lighting lamp, a gas sensor, a temperature and humidity sensor, a liquid crystal display, a wireless module and an audible and visual alarm; the single-chip microcomputer and the wireless module are installed in the housing respectively; the lighting The lamp is installed on the top of the housing; the gas sensor, temperature and humidity sensor, liquid crystal display and sound and light alarm are respectively embedded on the side wall of the housing;

The lighting lamp, the gas sensor, the temperature and humidity sensor, the liquid crystal display, the wireless module and the sound and light alarm are respectively connected with the single-chip microcomputer;

The governor is connected with the axial flow fan;

The governor performs wireless communication with the single-chip microcomputer through the wireless module;

The above-ground receiving computer performs wireless communication with the single-chip microcomputer through the wireless module.

The above-mentioned new type of real-time intelligent monitoring and early warning device for electric cable wells, wherein the axial flow fan is installed on the side of the wellhead of the electric cable well, blowing air in the well, and exchanging fresh air outside the well with toxic and harmful gases in the well;

The downhole monitoring device is placed in the electric cable well, and the gas sensor detects the gas in the well to check whether the toxic and harmful gas in the well exceeds the standard, and transmits the gas detection data in the well to the single-chip microcomputer;

If the toxic and harmful gas content in the well is normal, the single-chip microcomputer transmits the gas detection data in the well to the receiving computer on the well in real time through the wireless module, which is convenient for the monitoring personnel on the well to check, and the axial flow fan maintains a normal speed;

If the toxic and harmful gas content in the well exceeds the standard, the single-chip microcomputer controls the sound and light alarm to perform sound and light alarm, and the single-chip microcomputer transmits the gas detection data in the well to the receiving computer on the well in real time through the wireless module, and the receiving computer on the well The computer gives sound and light alarm at the same time, and the monitoring personnel on the well can quickly organize the underground operators to evacuate quickly through the receiving computer on the well; at the same time, the single-chip microcomputer sends an increase speed signal, and transmits the increase speed signal to the speed control through the wireless module. The speed governor controls the axial flow fan to increase the rotating speed, so as to quickly remove the poisonous and harmful gas underground;

The temperature and humidity sensor detects the humidity content in the well, and transmits the detection data of the humidity content in the well to the single-chip microcomputer. If the detection data of the humidity content in the well exceeds the standard and cannot meet the production requirements of the cable joint, the single-chip microcomputer sends an increase speed signal, and passes The wireless module transmits the speed increase signal to the governor, and the governor controls the axial flow fan to increase the speed, speed up the underground air circulation, and reduce the humidity content;

The single-chip microcomputer transmits the received gas detection data in the well and the humidity content detection data in the well to the liquid crystal display screen for display.

The above-mentioned new type of real-time intelligent monitoring and early warning device for cable wells, wherein the lighting lamp adopts maintenance-free explosion-proof lamps; the wireless module adopts FSK digital frequency modulation technology.

The above-mentioned novel cable well real-time intelligent monitoring fault warning device, wherein the gas sensor includes an _O2 detection module, an _H2S detection module, a CO detection module and a _CH4 detection module, and the _O2 detection module detects in real time O ₂ concentration in the well; the H ₂ S detection module detects the H ₂ S concentration in the well in real time; the CO detection module detects the CO concentration in the well in real time; the CH ₄ detection module detects the CH ₄ concentration in the well in real time.

The above-mentioned new type of real-time intelligent monitoring and early warning device for cable wells, wherein the temperature and humidity sensor detects the temperature in the well, and transmits the temperature detection data in the well to the single-chip microcomputer, and the single-chip microcomputer transmits the received temperature detection data in the well The liquid crystal display is displayed, and the single-chip microcomputer transmits the temperature detection data in the well to the receiving computer on the well in real time through the wireless module.

The novel cable well real-time intelligent monitoring fault warning device of the present invention realizes the integrated design of underground lighting, real-time intelligent monitoring of poisonous and harmful gases, and ventilation; DC 12V voltage is used for power supply, which ensures the continuity of lighting and brightness requirements; It realizes the real-time intelligent monitoring of poisonous and harmful gases underground, and sends the monitored data to the ground in real time, which is convenient for the person in charge to check and monitor; the integrated design of the ventilation system realizes the automatic and intelligent speed regulation of the blower, which can realize the automatic and intelligent speed regulation of the blower in the shortest time. Complete the elimination of toxic and harmful gases to ensure the safety of workers.

Description of drawings

Fig. 1 is the block diagram of the structure of the real-time intelligent monitoring fault early warning device of novel electric cable well of the present invention;

Fig. 2 is the use status diagram of the real-time intelligent monitoring fault early warning device of the novel electric cable well of the present invention;

Fig. 3 is a logic flow chart of the new cable well real-time intelligent monitoring fault early warning device of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation will be described in detail below in conjunction with the accompanying drawings:

Please refer to Fig. 1 and Fig. 2, the best embodiment of the present invention, a new type of real-time intelligent monitoring and early warning device for cable workers, including downhole monitoring device 1, axial flow fan 2, governor 3 and uphole receiving computer 4.

Downhole monitoring device 1 comprises housing 10, single-chip microcomputer 11, illuminating lamp 12, gas sensor 13, temperature and humidity sensor 14, liquid crystal display 15, wireless module 16 and sound and light alarm 17; Inside the body 10; the illuminating lamp 12 is installed on the top of the housing 10; the gas sensor 13, the temperature and humidity sensor 14, the liquid crystal display 15 and the sound and light alarm 17 are respectively embedded in the side wall of the housing 10. Lighting lamp 12, gas sensor 13, temperature and humidity sensor 14, liquid crystal display 15, wireless module 16 and sound and light alarm device 17 are connected with single-chip microcomputer 11 respectively.

The speed governor 3 is connected with the axial flow fan 2; the speed governor 3 communicates wirelessly with the single-chip microcomputer 11 through the wireless module 16;

The lighting lamp 12 adopts a maintenance-free explosion-proof lamp and is powered by a DC 12V voltage, which ensures the continuity and brightness requirements of the lighting.

The wireless module 16 adopts FSK digital frequency modulation technology, and the selected model is E50-TTL-500, which is a 170MHZ in-line wireless serial port module (UART), half-duplex, integrated transceiver, transparent transmission mode, transmission power 500mW, working in 148-173.5MHz frequency band (default 170MHz), TTL level output, compatible with 3.3V and 5V IO port voltage, with air wake-up function (ultra-low power consumption). With data encryption and compression functions, the data transmitted in the air is random, and the rigorous encryption and decryption algorithm makes data interception meaningless, while the data compression function has the probability to reduce the transmission time, reduce the probability of interference, and improve reliability performance and transmission efficiency.

The gas sensor 13 includes an _O2 detection module, an _H2S detection module, a CO detection module and a _CH4 detection module. The _O2 detection module detects the _O2 concentration in the well in real time; the _H2S detection module detects the _H2S concentration in the well in real time; The CO detection module detects the CO concentration in the well in real time; the CH ₄ detection module detects the CH ₄ concentration in the well in real time. The O ₂ detection module, H ₂ S detection module and CO detection module are selected from Zhengzhou Weisheng Company as ZEO3 series products. The electrochemical module ZEO3 is a high-performance, general-purpose electrochemical series module. It uses three-electrode electrochemical Gas sensor and high-performance microprocessor, equipped with different gas sensors can measure the corresponding gas, built-in temperature sensor for temperature compensation, can accurately measure the gas concentration in the environment, and has digital output and analog voltage output at the same time, which is convenient for users to use And debugging, greatly shortening the user's design and development cycle, it perfectly combines electrochemical sensors and circuits to meet customers' needs for different gas detection occasions.

The temperature and humidity sensor 14 adopts high-quality Si7021 temperature and humidity sensor from Silicon lab, and applies special digital module acquisition technology and temperature and humidity sensing technology to ensure that the product has extremely high reliability and excellent long-term stability, and adopts UART interface , The temperature and humidity sensor 14 can directly obtain temperature and humidity data through the serial port, which is simple and convenient to use, and the module address and output time can be set, which is convenient for multi-point collection.

The single-chip microcomputer 11 selects STM32 single-chip microcomputer, which has more functions, less power consumption and faster running speed.

Liquid crystal display 15 selects the liquid crystal display that model is KTM043AL01 for use.

The speed governor 3 adopts DFL-HJ02 inverter, the power supply voltage is 220V, the frequency is 50Hz, the rated power is 1.5kW, and the frequency modulation range is 0.01-400Hz. It adopts the space voltage vector SVPWM control method, which can realize arbitrary V/F control. Controlling the on and off of the COM and FWD ports can realize the start and stop of the fan; connecting the FV and ACM ports to the external microcontroller 11 to control the analog voltage given by the DA module can realize V/F control and realize the adjustment of the axial flow fan 2. speed.

Referring to Fig. 2 and Fig. 3 again, the real-time intelligent monitoring and early warning device for cable wells of the present invention, when in use:

(1) Axial fan 2 is installed on the side of the wellhead of the electric cable well 300. After opening the well cover, the well is blown to exchange fresh air outside the well with toxic and harmful gases in the well;

(2) The downhole monitoring device 1 is placed in the electric cable well, and the gas sensor 13 detects the gas in the well, checks whether the poisonous and harmful gas in the well exceeds the standard, and transmits the gas detection data in the well to the single-chip microcomputer 11;

(3) If the poisonous and harmful gas content in the well is normal, the single-chip microcomputer 11 transmits the gas detection data in the well to the receiving computer 4 in the well in real time through the wireless module 16, so that it is convenient for the monitoring personnel 100 to check on the well, and the axial flow fan maintains a normal speed;

(4) If the toxic and harmful gas content in the well exceeds the standard, the single-chip microcomputer 11 controls the sound and light alarm 17 to perform sound and light alarm, and the single-chip microcomputer 11 transmits the gas detection data in the well to the receiving computer 4 on the well in real time through the wireless module 16, and the receiving computer 4 on the well simultaneously Sound and light alarm, the monitoring personnel 100 on the well can quickly organize the underground operators 200 to evacuate quickly through the receiving computer 4 on the well; at the same time, the single-chip microcomputer 11 sends out the signal of increasing the speed, and transmits the signal of increasing the speed to the governor 3 through the wireless module 16, and the speed governor 3. Control the axial flow fan 2 to increase the speed, and quickly remove the toxic and harmful gas underground;

(5) When making joints for the cable 400 downhole, the temperature and humidity sensor 15 detects the humidity content in the well, and transmits the humidity content detection data in the well to the single-chip microcomputer 11. If the humidity content detection data in the well exceeds the standard and cannot meet the cable joint production requirements, The single-chip microcomputer 11 sends an increase speed signal, and transmits the increase speed signal to the governor 3 through the wireless module 16, and the speed governor 3 controls the axial flow fan 2 to increase the speed, so as to speed up the underground air circulation and reduce the humidity content;

(6) The single-chip microcomputer 11 transmits the gas detection data in the well and the humidity content detection data in the well received to the liquid crystal display screen 15 for display, which is convenient for the downhole operators 200 to check;

(7) The temperature and humidity sensor 14 detects the temperature in the well, and transmits the temperature detection data in the well to the single-chip microcomputer 11, and the single-chip microcomputer 11 transmits the temperature detection data in the well received to the liquid crystal display 15 for display, which is convenient for the downhole operator 200 to check; and the single-chip microcomputer 11 The temperature detection data in the well is transmitted to the receiving computer 4 on the well in real time through the wireless module 16, which is convenient for the monitoring personnel 100 on the well to view.

The new cable well real-time intelligent monitoring fault early warning device of the present invention can realize the speed regulation function under various working conditions; the real-time detection of toxic and harmful gases, temperature and humidity ensures the life safety of the operators, and also protects the environmental conditions. Whether it meets the job requirements provides data support.

The new real-time intelligent monitoring fault warning device for cable wells of the present invention can meet the long-term sufficient lighting requirements in the underground, and the monitoring device realizes that the monitoring system controls the fan to provide a corresponding appropriate ventilation volume before the occurrence of a safety accident in the underground operation or when the operating environment is dangerous. Ventilate and ventilate to relieve danger, and issue sound and light early warning, which is characterized by sensitive response, high degree of automation and intelligence, and no false alarms. At the same time, its convenient and multi-functional features can meet the needs of various working conditions. It significantly improves the safety conditions and reliability of downhole operations, can effectively prevent safety accidents, and provides protection and convenience for cable well operations.

In summary, the new type of cable well real-time intelligent monitoring fault early warning device of the present invention realizes continuous lighting endurance, real-time and intelligent monitoring of toxic and harmful gases, automation of blower speed regulation, and protection of the upper and lower alarm systems. Simultaneous and standardization of humidity judgments for cable splice fabrication.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, rather than as a limitation to the present invention, as long as within the scope of the spirit of the present invention, the above-described embodiments Changes and modifications will fall within the scope of the claims of the present invention.

Claims (5)

1. a kind of novel cable work well real time intelligent control fault pre-alarming device, which is characterized in that including underground monitoring device, axis Computer is received on flow fan, governor and well, wherein：

The underground monitoring device includes shell, microcontroller, headlamp, gas sensor, Temperature Humidity Sensor, liquid crystal display Screen, wireless module and audible-visual annunciator；The microcontroller and wireless module are separately mounted in the shell；The headlamp peace Mounted in the top of the shell；The gas sensor, Temperature Humidity Sensor, liquid crystal display and audible-visual annunciator are respectively embedded into On the side wall of the shell；

The headlamp, gas sensor, Temperature Humidity Sensor, liquid crystal display, wireless module and audible-visual annunciator respectively with The microcontroller is connected；

The governor is connected with the axial flow blower；

The governor is communicated wirelessly by the wireless module and the microcontroller；

Computer is received on the well to communicate wirelessly by the wireless module and the microcontroller.

2. a kind of novel cable work well real time intelligent control fault pre-alarming device according to claim 1, which is characterized in that One side that the axial flow blower is mounted on the well head of cable work well has fresh air outside well with toxic in well to drying in well Evil gas swaps；

The underground monitoring device is placed in cable work well, gas detection in the gas sensor progress well, in inspection shaft Whether toxic and harmful gas is exceeded, and gas detection data in well are transferred to the microcontroller；

If toxic and harmful gas content is normal in well, the microcontroller is real by gas detection data in well by the wireless module When be transferred on the well and receive computer, check that the axial flow blower keeps rated speed convenient for care provider on well；

If toxic and harmful gas content is exceeded in well, the microcontroller controls the audible-visual annunciator and carries out sound-light alarm, and institute Computer will be received by the wireless module by stating microcontroller on gas detection real-time data transmission to the well in well, on the well It receives computer and is carried out at the same time sound-light alarm, care provider can rapid tissue underground work people by receiving computer on the well on well Member quickly withdraws；The microcontroller sends out increase tach signal simultaneously, and will increase tach signal by the wireless module and pass It is defeated by the governor, the governor controls the axial flow blower and increases rotating speed, underground toxic and harmful gas is quickly excluded；

The Temperature Humidity Sensor carries out moisture content detection in well, and moisture content detection data in well is transferred to the list Piece machine cannot be satisfied cable connector making when requiring, the microcontroller sends out increase if moisture content detection data is exceeded in well Tach signal, and the governor is transferred to by tach signal is increased by the wireless module, described in the governor control Axial flow blower increases rotating speed, accelerates underground air circulation, reduces moisture content；

Moisture content detection data in gas detection data in the well of reception and well is transferred to the liquid crystal by the microcontroller Display screen is shown.

3. a kind of novel cable work well real time intelligent control fault pre-alarming device according to claim 1, which is characterized in that The headlamp uses maintaining-free explosion-proof lamp；The wireless module uses FSK frequency-shift keying technologies.

4. a kind of novel cable work well real time intelligent control fault pre-alarming device according to claim 1, which is characterized in that The gas sensor includes O₂Detection module, H₂S detection modules, CO detection modules and CH₄Detection module, the O₂Detect mould Block detects the O in well in real time₂Concentration；The H₂S detection modules detect the H in well in real time₂S concentration；The CO detection modules are real-time Detect the CO concentration in well；The CH₄Detection module detects the CH in well in real time₄Concentration.

5. a kind of novel cable work well real time intelligent control fault pre-alarming device according to claim 1, which is characterized in that The Temperature Humidity Sensor carries out well temperature detection, and well temperature detection data is transferred to the microcontroller, the list The well temperature detection data of reception is transferred to the liquid crystal display and shown by piece machine, and the microcontroller is described in Well temperature detection data is real-time transmitted on the well and receives computer by wireless module.