CN216956755U - Accuracy detection device for tunnel environmental monitoring equipment - Google Patents

Abstract

The utility model discloses a precision detection device for tunnel environment monitoring equipment, belongs to the technical field of tunnel detection, and aims to solve the problems that precision detection of tunnel monitoring equipment is limited on site and all tunnel monitoring equipment can not be detected at one time during inspection. The device is including establishing wind-force wind direction sensor, CO concentration measurement appearance, smoke transducer, temperature and humidity sensor on the equipment rack of box, and the installation tunnel environmental monitoring equipment on the equipment rack is equipped with detection storehouse and heated warehouses in the box, and the box lateral wall all is equipped with the fan, is equipped with CO storage tank, solid-state particle ration storehouse, humidifier outside the box respectively, communicates with the detection storehouse through the pipeline respectively. The utility model can solve the precision detection of all monitoring equipment in the tunnel at one time, can carry out detection judgment on the monitoring equipment through the simulation environment which is highly similar to the tunnel, and transfers the test site from the tunnel to a test room, thereby greatly improving the detection environment and increasing the reliability of the detection result.

Description

Accuracy detection device for tunnel environmental monitoring equipment

technical field

The utility model belongs to the technical field of tunnel detection, in particular to an accuracy detection device of tunnel environment monitoring equipment.

Background technique

The proportion of tunnels in the mileage of newly-built expressways is increasing, and its spatial structure is characterized by a closed band distribution. Therefore, the monitoring of harmful gases, temperature and humidity, visibility and water accumulation in the tunnel is more important. The highway operation department By grasping the comprehensive environmental conditions in the tunnel in time, traffic control and diversion can be effectively carried out, thereby reducing the occurrence of traffic accidents. As the problem of safe operation of tunnels has become more and more prominent in recent years, environmental monitoring and control in tunnels has become an important means to ensure the safety and safe operation of expressway tunnels.

Since the tunnel is a special structure of the highway, the environmental conditions in the tunnel are complicated due to the limitation of space. Among them, the harmful exhaust gas mixed with gaseous and free solid particles emitted by driving vehicles, and the dust and rolled up dust carried by the vehicle cannot diffuse and disappear quickly due to the limitation of space in the tunnel, resulting in extremely poor air quality in the tunnel. . Therefore, in the prior art, equipment such as co sensors, smoke sensors, wind speed and direction detectors, temperature and humidity detectors are usually used to monitor the tunnel environment, and the data monitored by the equipment is uploaded to the host computer for real-time monitoring by each toll station. Environment status in the tunnel and make corresponding prompts or other decisions. Therefore, the accuracy and precision of the data obtained by these monitoring equipment is the key to tunnel environmental monitoring. In order to ensure the objective and accurate data, the monitoring equipment needs to be regularly tested for accuracy to ensure the accuracy of the data obtained during the monitoring work in the tunnel. and precision. However, at present, there is no simple and easy precision detection method and corresponding equipment for the above common co sensors, smoke sensors, wind speed and direction detectors, temperature and humidity detectors, etc., resulting in large errors and reduced data reliability. , in severe cases, even a monitoring device is useless.

In the detection of tunnel environmental monitoring equipment, the on-site detection is the most suitable for the actual situation. However, due to the abundant sloping water in the mountain and the effect of the temperature difference between inside and outside the tunnel, the tunnel is often humid and prone to stagnant water; Due to the very limited space, it is very difficult to conduct on-site inspection of the environmental monitoring equipment installed in the tunnel. Therefore, after the data of a certain monitoring equipment in the tunnel is obviously unreasonable, the maintenance personnel only find it and send it for inspection when they come to the scene for inspection. In addition, different monitoring equipments have different units or departments for accuracy testing, which makes the accuracy testing work of each group of equipment very cumbersome. Related equipment to detect the accuracy of all monitoring equipment in the tunnel.

To sum up, there is an urgent need for a device that can simulate the comprehensive environment in a running tunnel and detect the tunnel monitoring equipment in this environment. By comparing the monitoring equipment data with the real data in the simulated environment, the Whether the tunnel monitoring equipment is accurate in the process of application and whether it is operated under the conditions that meet the relevant specifications.

Utility model content

The purpose of the present utility model is to provide an accuracy detection device for tunnel environment monitoring equipment, so as to solve the problem that the accuracy detection of tunnel monitoring equipment is limited in the field and lacks all tunnel monitoring equipment that can detect all the tunnel monitoring equipment at one time when submitting for inspection.

In order to solve the above problems, the technical scheme of the present utility model is:

An accuracy detection device for tunnel environment monitoring equipment, comprising a wind and wind direction sensor, a CO concentration meter, a smoke sensor, and a temperature and humidity sensor arranged on an equipment rack of a box body. Tunnel environment monitoring equipment is installed on the equipment rack, and a box is provided with The detection chamber and the heating chamber are equipped with fans on the side walls of the box body, and there are CO storage tanks, solid particle quantitative chambers, and humidifiers outside the chambers. The CO storage tanks, solid particle quantitative chambers, and humidifiers are connected to the detection chamber through pipes. .

Further, an electric heater is provided in the heating chamber.

Further, a CO air pump is provided on the communication pipeline between the CO storage tank and the detection chamber; a particle air pump is provided on the communication pipeline between the solid particle quantitative chamber and the detection chamber; and a moisture pump is provided on the communication pipeline between the humidifier and the detection chamber.

Further, it also includes a controller, the controller is a PLC, the input ends of the controller are respectively connected to the wind direction sensor, the CO concentration meter, the smoke sensor, and the temperature and humidity sensor, and the output ends of the controller are respectively connected to the electric heater, the fan, the CO air pump, and the particle. Air pump, wet air pump, PLC controller facilitates automation.

Further, the output end of the controller is also connected with a display screen, which is convenient to detect the actual reading in the simulated environment in the warehouse.

Further, a partition plate is arranged in the box body, a plurality of through holes are arranged on the partition plate, and the partition plate divides the box body into a detection bin and a heating bin.

Further, a transparent window is provided on one side of the box, which is convenient for reading the readings of the tunnel environment monitoring equipment in the simulated environment.

Further, the bottom of the equipment rack is connected with a base through a bracket, and the base is movably installed at a position in the middle of the detection chamber.

The beneficial effects of the present utility model are as follows:

(1) The present utility model uses CO gas of different standard concentrations provided by the CO storage tank to simulate the CO gas generated by incomplete combustion in the vehicle exhaust gas in the tunnel in the detection chamber; the solid particles of different concentrations are configured through the solid particle quantitative chamber. And input it into the detection bin to simulate the free solid particles in the tunnel; simulate the ventilation conditions in the tunnel by blowing blowing from different directions and angles of the fan; simulate the humidity generated by the dripping and accumulated water in the tunnel by the humidifier; simulate the inside and outside of the tunnel by the heating chamber Through the environmental simulation of the main monitoring indicators in the tunnel: CO, solid particles, wind speed, temperature and humidity, and through the corresponding wind and wind direction sensor, CO concentration measuring instrument, smoke sensor, temperature and humidity sensor The data in the simulated environment is analyzed. Real-time detection and comparison of the display data of the tunnel environmental monitoring equipment placed on the equipment rack in the box to determine whether the monitoring data of the tunnel monitoring equipment is accurate, that is, whether the tunnel environmental monitoring equipment operates under the conditions that meet the relevant specifications.

(2) The utility model can solve the accuracy detection of all monitoring equipment in the tunnel at one time. Regardless of whether the tunnel monitoring equipment is integrated or separated, it can be detected and judged through a simulated environment that is highly similar to the tunnel, and the test site can be removed from the tunnel. Transferred to the laboratory, the testing environment has been greatly improved, and the reliability of the testing results has increased. And the final displayed data error and sensitivity can be used as a third-party product testing basis for reliable operation.

Description of drawings

Fig. 1 is the structural representation of a kind of tunnel environmental monitoring equipment precision detection device;

Fig. 2 is the perspective view of Fig. 1;

3 is a schematic structural diagram of an equipment rack in a tunnel environmental monitoring equipment accuracy detection device;

4 is a schematic diagram of circuit connection of a tunnel environment monitoring equipment accuracy detection device;

Reference numerals are as follows: 1-box body; 11-partition plate; 12-detection chamber; 13-heating chamber; 14-electric heater; 15-through hole; 16-display screen; 17-window; 2-fan; 22- Wind direction sensor; 3-CO storage tank; 31-CO air pump; 32-CO concentration analyzer; 4-Solid particle quantitative bin; 41-Particulate air pump; 42-Smoke sensor; 5-Humidifier; -Temperature and humidity sensor; 6-equipment rack; 61-support; 62-base; 7-controller.

Detailed ways

As shown in Figures 1-4, a tunnel environment monitoring equipment accuracy detection device includes a wind wind direction sensor 22, a CO concentration measuring instrument 32, a smoke sensor 42, and a temperature and humidity sensor 52, which are arranged on the equipment rack 6 of the box 1. The box body 1 is provided with a partition plate 11, and the partition plate 11 is provided with a plurality of through holes 15. The partition plate 11 divides the box body 1 into a detection bin 12 and a heating bin 13. The heating bin 13 is provided with an electric heater 14. The bottom of the equipment rack 6 is connected with a base 62 through a bracket 61 , and the base 62 is movably installed at the center of the detection chamber 12 ; tunnel environment monitoring equipment is installed on the equipment rack 6 .

A fan 2 is arranged on the side wall of the box body 1; a transparent window 17 is arranged on one side of the box body 1; a CO storage tank 3, a solid particle quantitative bin 4, a humidifier 5, a CO storage tank 3, The solid particle quantitative bin 4 and the humidifier 5 are communicated with the detection bin 12 through pipelines. Specifically: a CO air pump 31 is provided on the communication pipeline between the CO storage tank 3 and the detection bin 12; the communication pipeline between the solid particle quantitative bin 4 and the detection bin 12 A particulate air pump 41 is provided on the top; a wet air pump 51 is provided on the communication pipe between the humidifier 5 and the detection chamber 12 .

In order to realize automatic control, the tunnel environment monitoring equipment accuracy detection device also includes a controller 7, the controller 7 is a commercially available PLC, and the input ends of the controller 7 are respectively connected to the wind wind direction sensor 22, the CO concentration measuring instrument 32, and the smoke sensor 42. , temperature and humidity sensor 52, the output end of the controller 7 is respectively connected to the electric heater 14, the fan 2, the CO air pump 31, the particulate air pump 41, and the moisture pump 51. A display screen 16 is also connected to the output end of the controller 7 .

In this embodiment, the net volume in the detection bin 12 is 2m×2m×2m.

When the tunnel monitoring equipment of the integrated CO/VI, anemometer, and temperature and humidity detector is used for detection:

The tunnel monitoring equipment is placed on the equipment rack 6 to ensure that the cleaning of the bottom of the detection chamber 12 is not polluted during installation, and the warehouse door of the detection chamber 12 is closed.

Solid particles of a predetermined concentration are placed in the solid particle quantitative chamber 4 .

Through the control of the controller 7, the following devices are automatically turned on:

Turn on the electric heater 14, and the hot air is scattered into the detection chamber 12 through the through hole 15;

Turn on the CO gas pump 31, and the standard concentration of CO gas is passed into the detection chamber 12;

Turn on the particle air pump 41, and solid particles of a predetermined concentration are passed into the detection chamber 12 through the gaseous state;

Turn on the wet gas pump 51, and the wet gas passes into the detection chamber 12;

Turn on the fan 2 to promote uniform ventilation in the detection chamber 12 .

After 5-10 minutes, the CO, solid particles, humidity and temperature in the detection chamber 12 are evenly distributed in the detection chamber 12 .

The display screen 16 connected to the controller 7 displays the real-time data collected from the wind wind direction sensor 22, the CO concentration measuring instrument 32, the smoke sensor 42, and the temperature and humidity sensor 52, respectively: wind speed Y ₁ , wind direction Y ₂ , CO concentration Y ₃ , free solid particle concentration Y ₄ , temperature Y ₅ , humidity Y ₆ .

At the same time, the data display of the tunnel monitoring equipment located on the equipment rack 6 is stable, and the data are read through the window 17: wind speed X ₁ , wind direction X ₂ , CO concentration X ₃ , free solid particle concentration X ₄ , temperature X ₅ , humidity X ₆ .

Compare the real-time data of the wind direction sensor 22, the CO concentration meter 32, the smoke sensor 42, and the temperature and humidity sensor 52 in the detection warehouse with the display data of the tunnel monitoring equipment. When the errors of the two are within the allowable range, determine the monitoring of the tunnel monitoring equipment. The data is accurate and admissible within this range; when the error of the two exceeds the allowable range, it is determined that the monitoring data of the tunnel monitoring equipment is inaccurate and unacceptable.

The above is a concentration test process. In the whole test, the above test process needs to be repeated many times, and different concentrations of CO gas, solid particle concentration, temperature, humidity, and multiple fans 2 work alternately to provide different wind power and wind direction. Obtain different X data sets and Y data sets under different test conditions, and compare them to determine whether the monitoring data of tunnel monitoring equipment is accurate and acceptable under specific test conditions.

If all the monitoring data of the tunnel monitoring equipment is accurate and reliable, it does not need to be calibrated, repaired, or replaced;

If all the monitoring data of the tunnel monitoring equipment is accurate and reliable, the corresponding modules can be calibrated, repaired, or replaced.

When the tunnel monitoring equipment is separated, the principle is the same as above, according to the nature of the equipment to be tested, select the equipment that is turned on by the controller 7, cooperate with the testing equipment to simulate the environment, and separately test the accuracy of the CO/VI detector, the wind speed and direction indicator, and the temperature and humidity detector. of accuracy.

It should be noted that the wind and wind direction sensor 22, the CO concentration measuring instrument 32, the smoke sensor 42, the temperature and humidity sensor 52, and the controller 7 are commercially available accessories, and their model specifications need to be configured according to the actual specifications of the device in the laboratory. The type selection is determined, and the specific type selection calculation method adopts the prior art in the art, so it will not be described in detail.

Claims (8)

1. The utility model provides a tunnel environment monitoring facilities precision detection device, includes wind-force wind direction sensor (22), CO concentration measurement appearance (32), smoke transducer (42), temperature and humidity sensor (52), its characterized in that: wind-force direction of wind sensor (22), CO concentration measurement appearance (32), smoke transducer (42), temperature and humidity sensor (52) all establish on equipment rack (6) of box (1), install tunnel environmental monitoring equipment on equipment rack (6), be equipped with in box (1) and detect storehouse (12) and heated warehouses (13), box (1) lateral wall all is equipped with fan (2), box (1) is equipped with CO storage tank (3), solid-state particle ration storehouse (4), humidifier (5) outward respectively, CO storage tank (3), solid-state particle ration storehouse (4), humidifier (5) are through pipeline and detection storehouse (12) intercommunication.

2. The accuracy detection device of the tunnel environment monitoring equipment according to claim 1, characterized in that: an electric heater (14) is arranged in the heating bin (13).

3. The accuracy detection device for the tunnel environment monitoring equipment as claimed in claim 1 or 2, wherein: a CO air pump (31) is arranged on a communication pipeline between the CO storage tank (3) and the detection bin (12); a particle air pump (41) is arranged on a communication pipeline between the solid particle quantitative bin (4) and the detection bin (12); and a moisture pump (51) is arranged on a communication pipeline between the humidifier (5) and the detection bin (12).

4. The accuracy detection device of the tunnel environment monitoring equipment according to claim 3, characterized in that: still include controller (7), controller (7) are PLC, wind-force wind direction sensor (22), CO concentration determination appearance (32), smoke transducer (42), temperature and humidity sensor (52) are connected respectively to controller (7) input, electric heater (14), fan (2), CO air pump (31), particle air pump (41), moisture pump (51) are connected respectively to controller (7) output.

5. The accuracy detection device for tunnel environment monitoring equipment according to claim 4, characterized in that: the output end of the controller (7) is also connected with a display screen (16).

6. The accuracy detection device of the tunnel environment monitoring equipment according to claim 1, characterized in that: be equipped with baffle (11) in box (1), be equipped with a plurality of through-holes (15) on baffle (11), baffle (11) divide into box (1) and detect storehouse (12) and heated warehouses (13).

7. The accuracy detection device of the tunnel environment monitoring equipment according to claim 1, characterized in that: a transparent window (17) is arranged on one side surface of the box body (1).

8. The accuracy detection device for the tunnel environment monitoring equipment as recited in claim 1, characterized in that: the bottom of the equipment frame (6) is connected with a base (62) through a support (61), and the base (62) is movably installed in the middle of the detection bin (12).

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