CN211008760U - Underground alarm device - Google Patents
Underground alarm device Download PDFInfo
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- CN211008760U CN211008760U CN201921645248.8U CN201921645248U CN211008760U CN 211008760 U CN211008760 U CN 211008760U CN 201921645248 U CN201921645248 U CN 201921645248U CN 211008760 U CN211008760 U CN 211008760U
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Abstract
The utility model discloses an alarm device in pit includes the shell, installation liquid level detection device, gaseous detection device, a power supply, P L C, alarm device in the shell, the power is connected with each device, liquid level detection device, gaseous detection device respectively with P L C's input interface connection, P L C's output interface is connected with alarm device, this device can be directly deepened underground by pull ring and stay cord are direct, gas in the pit, the liquid level height detects, and in need not the direct well that gets into of operating personnel, fundamentally has guaranteed operating personnel's safety, and can be more accurate monitoring underground gas through P L C, the condition of liquid level.
Description
Technical Field
The utility model relates to an alarm device in pit.
Background
At present fill in the pit and all rely on the operating personnel to get into to fill the region and carry out manual observation to filling the liquid level, there is very big potential safety hazard like this, fill and contain a large amount of poisonous and harmful gas in the thick liquid, can cause harm on the health or even lead to dying after giving out, the mode that the tradition carries out remote monitoring with the camera has very big limitation, the environment is relatively poor in the pit, the camera lens is obscure, it is unclear to see liquid level position, signal transmission is more difficult simultaneously, often can not receive the emergence of the condition such as video, although the operating personnel have portable gas detector, but the operating personnel still will enter into and fill the region and just can detect gas, unable fundamentally protection operating personnel's personal safety.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an alarm device in pit.
The utility model discloses a following technical scheme can realize.
The utility model provides a pair of alarm device in pit includes the shell, installation liquid level detection device, gaseous detection device, power, P L C, alarm device in the shell, the power is connected with P L C, liquid level detection device, gaseous detection device respectively with P L C's input interface connection, P L C's output interface is connected with alarm device.
The liquid level detection device is a liquid level sensor, and a probe of the sensor is arranged on the outer wall of the shell.
The gas detection device is an infrared gas sensor, and a probe of the gas detection sensor is arranged on the outer wall of the shell.
The model P L C is Siemens S2-700.
The alarm device is an alarm horn.
And a pull ring is fixedly arranged on the upper side of the shell.
The shell is made of waterproof and anti-corrosion materials and is completely sealed.
The beneficial effects of the utility model reside in that this device can be directly by pull ring and stay cord directly go deep into in the pit, detect gaseous, the liquid level height in the pit, and need not in the direct well that gets into of operating personnel, fundamentally has guaranteed operating personnel's safety, and can more accurate monitoring gaseous, the condition of liquid level in the pit through P L C.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure, 1-a shell, 2-a liquid level detection device, 3-a gas detection device, 4-a power supply and 5-P L C and 6-an alarm device.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The underground alarm device shown in fig. 1 comprises a housing 1, wherein a liquid level detection device 2, a gas detection device 3, a power supply 4, a P L C5 and an alarm device 6 are installed in the housing 1, the power supply 4 is connected with a P L C5, the liquid level detection device 2 and the gas detection device 3 are respectively connected with an input interface of a P L C5, and an output interface of a P L C5 is connected with the alarm device 6.
The liquid level detection device 2 is a liquid level sensor, a probe of the sensor is installed on the outer wall of the shell 1, the liquid level sensor adopts a static pressure type liquid level sensor, the measured pressure is converted into an electric signal by utilizing the measuring principle of liquid static pressure, the electric signal is amplified by an amplifying circuit and compensated by a compensating circuit, and finally the electric signal is output to an input interface of a P L C5 in a 4-20 mA or 0-10 mA current mode.
The gas detection device 3 is an infrared gas sensor, a probe of the gas detection sensor is arranged on the outer wall of the shell 1, when the wavelength of infrared rays is coincident with the absorption spectral line of the gas to be detected, infrared energy is absorbed, the attenuation of the light intensity of the infrared rays passing through the gas to be detected meets the Lambert-Beer (L ambert-Beer) law that the gas concentration is higher and the light attenuation is higher, so that the gas concentration can be measured by measuring the attenuation of the gas to the infrared rays, in order to ensure that the reading is in a linear relation, when the concentration of the component to be detected is high, the measuring gas chamber of the analyzer is shorter, the shortest is 0.3mm, when the concentration is low, the measuring gas chamber is longer, the longest is more than 200mm, and the infrared sensor converts the change of the gas concentration into an electric signal and transmits the electric signal to the input interface of P.
The model P L C5 is Siemens S2-700, an alarm level value and an alarm concentration value are input into a preset program before use, and when the actual underground liquid level or gas concentration reaches a preset value, P L C5 sends two command signals to the alarm device 6.
The alarm device 6 is an alarm horn, and can generate buzzing sounds with different sounds according to different alarm signals transmitted from P L C5.
The upper side of the shell 1 is fixedly provided with a pull ring which is used for matching with a pull rope to place the whole device at different heights in the pit.
The shell 1 is made of waterproof and anticorrosive material, and the shell 1 is completely sealed.
Claims (7)
1. The underground alarm device is characterized by comprising a shell (1), wherein a liquid level detection device (2), a gas detection device (3), a power supply (4), a P L C (5) and an alarm device (6) are arranged in the shell (1), the power supply (4) is connected with the P L C (5), the liquid level detection device (2) and the gas detection device (3) are respectively connected with an input interface of the P L C (5), and an output interface of the P L C (5) is connected with the alarm device (6).
2. A downhole warning device as claimed in claim 1, wherein: the liquid level detection device (2) is a liquid level sensor, and a probe of the sensor is arranged on the outer wall of the shell (1).
3. A downhole warning device as claimed in claim 1, wherein: the gas detection device (3) is an infrared gas sensor, and a probe of the gas detection sensor is arranged on the outer wall of the shell (1).
4. The downhole warning device of claim 1, wherein the model P L C (5) is Siemens S2-700.
5. A downhole warning device as claimed in claim 1, wherein: the alarm device (6) is an alarm horn.
6. A downhole warning device as claimed in claim 1, wherein: and a pull ring is fixedly arranged on the upper side of the shell (1).
7. A downhole warning device as claimed in claim 1, wherein: the shell (1) is made of waterproof and anti-corrosion materials, and the shell (1) is completely sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645248.8U CN211008760U (en) | 2019-09-29 | 2019-09-29 | Underground alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645248.8U CN211008760U (en) | 2019-09-29 | 2019-09-29 | Underground alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211008760U true CN211008760U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921645248.8U Active CN211008760U (en) | 2019-09-29 | 2019-09-29 | Underground alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211008760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927429A (en) * | 2020-07-29 | 2020-11-13 | 北京理工大学 | Detection and early warning device and method for carbon dioxide stored in oil and gas field exploitation layer |
-
2019
- 2019-09-29 CN CN201921645248.8U patent/CN211008760U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927429A (en) * | 2020-07-29 | 2020-11-13 | 北京理工大学 | Detection and early warning device and method for carbon dioxide stored in oil and gas field exploitation layer |
| CN111927429B (en) * | 2020-07-29 | 2022-02-11 | 北京理工大学 | Detection and early warning device and method for carbon dioxide stored in oil and gas field exploitation layer |
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