Novel combustible gas detection device

Abstract

The invention provides a novel combustible gas detection device which comprises a detector body, a sensor cover is connected below the detector body, a gas sensor is fixedly connected in the sensor cover, a filter screen is connected to the bottom of the sensor cover, and the filter screen is limited through a clamping ring fixed in the sensor cover; the cooling assembly is connected to the sensor cover below the detector body and comprises a cooling cylinder, the cooling cylinder comprises an inner cylinder and an outer cylinder, a cooling cavity is formed between the inner cylinder and the outer cylinder, and an air inlet hole and an air outlet hole are formed in the outer cylinder; a vortex tube refrigerator comprises a vortex tube body. The gas detector is simple in structure, water vapor in combustible gas can be quickly condensed and prevented from entering the detector, so that the service life of the detector is prolonged, and meanwhile, dust deposited on the filter screen can be effectively impacted through high-pressure gas, so that the dust falls down.

Description

Technical Field

[0001] The invention relates to the field of gas detection, and in particular to a combustible gas detector. Background Art

[0002] In industrial and civil fields, the detection of combustible gas leaks is crucial to ensure personnel safety and prevent fire or explosion accidents. Traditional combustible gas detectors mainly rely on sensors to detect the concentration of combustible gas in the environment, but the performance of these sensors will be affected in high humidity environments because the presence of water vapor may interfere with the accuracy of the sensor.

[0003] Existing combustible gas detectors often ignore the impact of water vapor on sensor performance in their designs. In high humidity environments, water vapor may condense on the sensor surface, causing false alarms or missed alarms, as well as increased sensor maintenance costs. Some detectors cool combustible gases by setting up curved cooling tubes, mainly by passing dry ice through the cooling tubes, so that the cooling tubes can be cooled quickly. However, dry ice sublimates quickly at room temperature and requires special equipment to preserve it. At the same time, the production and storage costs of dry ice are relatively high, which increases the overall cost of the detector. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a new combustible gas detection device. The gas detector has a simple structure and low cost. It can quickly condense water vapor in the combustible gas to prevent it from entering the sensor of the detector. At the same time, the high-pressure gas can effectively impact the dust deposited on the filter screen to make it fall downward.

[0005] To achieve the above object, the present invention adopts the following technical solution: a new type of combustible gas detection device, comprising:

[0006] A detector body, a sensor cover is connected below the detector body, a gas sensor is fixedly connected to the sensor cover, a filter is connected to the bottom of the sensor cover, and the filter is limited by a clamping ring fixed in the sensor cover;

[0007] A cooling assembly, the cooling assembly is connected to the sensor cover below the detector body, and includes a cooling cylinder, the cooling cylinder includes an inner cylinder and an outer cylinder, a cooling cavity is formed between the inner cylinder and the outer cylinder, and an air inlet and an air outlet are opened on the outer cylinder;

[0008] A vortex tube refrigerator comprises a vortex tube body, the vortex tube body is connected to a compressed gas generator through an air inlet pipe, a cold air pipe and a hot air pipe are connected to both ends of the vortex tube, the cold air pipe of the vortex tube is connected to the air inlet hole of the cooling component, a branch pipe is also connected to the air inlet pipe, the branch pipe is connected to a sensor cover, the end of the branch pipe is inclined toward the filter screen, the cooling pipe is connected to a first stop valve, the hot air pipe is connected to a second stop valve, and the branch pipe is connected to a third stop valve.

[0009] Furthermore, the inner cylinder of the cooling assembly is also provided with a plurality of baffles.

[0010] Furthermore, the baffle is inclined upward at an angle of 5-10 degrees.

[0011] Furthermore, the cooling pipe is connected to a temperature display.

[0012] Furthermore, a water collecting ring is threadedly connected to the bottom of the cooling cylinder, and the water collecting ring includes a ring body, an annular groove is provided in the ring body, a threaded connection portion is provided on the outer side of the ring body, a drainage hole is provided at the bottom of the annular groove, and a drainage joint is provided below the drainage hole.

[0013] Furthermore, the baffles are semicircular and arranged in a staggered manner on the inner cylinder of the cooling cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The gas detector has a simple structure and can quickly condense the water vapor in the combustible gas to prevent it from entering the detector, thereby extending the service life of the detector. At the same time, the high-pressure gas can effectively impact the dust deposited on the filter and make it fall downward;

[0016] 2. The inner cylinder of the cooling cylinder of the cooling assembly is provided with multiple baffles, so the contact area between the combustible gas and the inner cylinder of the cooling cylinder and the baffles is larger, and it is easier for the combustible gas to condense and flow;

[0017] 3. A water collecting ring is threadedly connected to the bottom of the cooling cylinder, so that the condensed water droplets can be collected in the water collecting ring and finally discharged through the drainage holes at the bottom of the annular groove, preventing the water droplets from directly dripping onto the equipment around or below the detector, while maintaining the dryness of the on-site environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the water collecting ring of the present invention;

[0020] Figure 3 A structural diagram of a sensor cover of the present invention;

[0021] Figure 4 For the present invention Figure 1 Enlarged view of the middle circle;

[0022] In the figure: 1, detector body; 2, sensor cover; 3, filter; 4, cooling tube; 5, inner tube; 6, outer tube; 7, cooling chamber; 8, air inlet; 9, air outlet; 10, vortex tube body; 11, air inlet pipe; 12, cold air pipe; 13, hot air pipe; 14, branch pipe; 15, baffle; 16, temperature display; 17, water collecting ring; 18, ring body; 19, annular groove; 20, drainage hole; 21, drainage joint; 22, clamping ring; 23, alarm; 24, tilting tube; 25, first stop valve; 26, second stop valve; 27, third stop valve; 28, compressed gas generator; 29, threaded connection; DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 1 to 4 A new type of combustible gas detection device shown includes:

[0025] A detector body 1, a sensor cover 2 is connected below the detector body 1, a gas sensor is fixedly connected to the sensor cover 2, a filter 3 is connected to the bottom of the sensor cover 2, and the filter 3 is limited by a clamping ring 22 fixed in the sensor cover 2;

[0026] A cooling assembly, the cooling assembly is connected to the sensor cover 2 below the detector body 1, and includes a cooling cylinder 4, the cooling cylinder 4 includes an inner cylinder 5 and an outer cylinder 6, a cooling cavity 7 is formed between the inner cylinder 5 and the outer cylinder 6, and the outer cylinder 6 is provided with an air inlet 8 and an air outlet 9;

[0027] A vortex tube refrigerator comprises a vortex tube body 10, the vortex tube body 10 is connected to a compressed gas generator 28 via an air inlet pipe 11, a cold air pipe 12 and a hot air pipe 13 are connected at both ends of the vortex tube, the cold air pipe 12 of the vortex tube is connected to an air inlet hole 8 of a cooling assembly, a branch pipe 14 is further connected to the air inlet pipe 11, the branch pipe 14 is connected to a sensor cover 2, the end of the branch pipe 14 is inclined toward a filter screen 3, a first stop valve 25 is connected to the cooling pipe, a second stop valve 26 is connected to the hot air pipe 13, and a third stop valve 27 is connected to the branch pipe 14.

[0028] The process of the present invention when in use is as follows. When the detector is installed in a place with relatively high air humidity, the vortex tube refrigerator can be started (the vortex tube refrigerator is a mature structure and can be purchased directly on the market. It will not be repeated here. The cold air generated by it can reach a minimum of -46°). At this time, the third stop valve 27 on the branch pipe 14 remains in a closed state, and the first stop valve 25 and the second stop valve 26 remain in an open state. After the compressed gas enters the vortex chamber of the vortex tube refrigerator, a high-speed rotating vortex is formed, and the gas will be divided into two parts. The hot air flow is directly discharged from the hot air pipe 13, and the cold air flow directly enters the cooling cavity 7 of the cooling tube 4 of the cooling component, so that the cooling tube 4 can be quickly cooled. At this time, if the combustible gas is mixed with water vapor and enters the cooling tube 4, it will contact the inner wall of the inner tube 5, and the water vapor will quickly condense and adhere to the inner wall of the inner tube 5 and flow downward. In this way, the water vapor in the combustible gas can be quickly separated so that it will not enter the sensor of the detector, effectively increasing the service life of the sensor. In addition, the branch pipe 14 connected to the air intake pipe 11 has an inclined pipe 24 at the end thereof. Therefore, after too much dust is deposited on the filter 3, the first stop valve 25 and the second stop valve 26 can be closed to keep the cold air pipe 12 and the hot air pipe 13 shut off, and the third stop valve 27 can be opened to allow the compressed gas to directly enter the branch pipe 14. In this way, the compressed gas in the air intake pipe 11 can impact the filter 3, so that the dust on the filter 3 can fall directly downward, thereby achieving rapid cleaning of the filter 3.

[0029] Furthermore, the inner cylinder 5 of the cooling assembly is also provided with a plurality of baffles 15. Specifically, the inner cylinder 5 of the cooling assembly is also provided with a plurality of baffles 15, and the baffles 15 are arranged in a staggered manner, so that the combustible gas can frequently change direction after entering the cooling cylinder 4, so that its speed is slowed down, and the time of contacting the cylinder wall of the inner cylinder 5 is prolonged, so that the water vapor therein is better condensed, and at the same time, the low temperature of the inner cylinder 5 will be transmitted to the baffles 15, so that the baffles 15 can also condense the water vapor.

[0030] Furthermore, the baffle 15 is tilted upward at an angle of 5-10 degrees. Specifically, the baffle 15 is tilted upward, so that when condensed water condenses on the baffle, it can flow along the baffle to the inner wall of the cooling cylinder, and finally flow downward through the inner wall of the cooling cylinder.

[0031] Furthermore, the cooling pipe is connected to a temperature display 16. Specifically, the cooling pipe of the present invention is provided with a temperature display 16, so that the temperature of the cold air can be observed, and the flow rate of the compressed gas of the compressed gas generator 28 is adjusted to adjust the intake volume of the intake pipe 11, so that the temperature of the cold air is adjusted to avoid the condensed water from freezing due to the low temperature.

[0032] Furthermore, a water collecting ring 17 is threadedly connected to the bottom of the cooling cylinder 4, and the water collecting ring 17 includes a ring body 18, an annular groove 19 is provided in the ring body 18, a threaded connection portion 29 is provided on the outside of the ring body 18, a drainage hole 20 is provided at the bottom of the annular groove 19, and a drainage joint 21 is provided below the drainage hole 20. Specifically, the present invention is threadedly connected to the water collecting ring 17 at the bottom of the outer cylinder 6 of the cooling cylinder 4 through the threaded connection portion of the water collecting ring 17, so that the condensed water can be collected by the water collecting ring 17 and finally discharged through the drainage hole 20. The drainage joint 21 below the drainage hole 20 can be connected to a drainage hose, so that the condensed water can flow to a designated location and will not flow everywhere to damage the on-site environment.

[0033] Further, the baffles 15 are semicircular and staggered on the inner cylinder 5 of the cooling cylinder 4. Specifically, the baffles 15 of the present invention are semicircular and staggered in the cooling cylinder 4, so that the airflow and the baffles 15 have enough contact area, and the water vapor therein can condense quickly.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A new type of combustible gas detection device, characterized in that: include: A detector body, a sensor cover is connected below the detector body, a gas sensor is fixedly connected to the sensor cover, a filter is connected to the bottom of the sensor cover, and the filter is limited by a clamping ring fixed in the sensor cover; A cooling assembly, the cooling assembly is connected to the sensor cover below the detector body, and includes a cooling cylinder, the cooling cylinder includes an inner cylinder and an outer cylinder, a cooling cavity is formed between the inner cylinder and the outer cylinder, and an air inlet and an air outlet are opened on the outer cylinder; A vortex tube refrigerator comprises a vortex tube body, the vortex tube body is connected to a compressed gas generator through an air inlet pipe, a cold air pipe and a hot air pipe are connected to both ends of the vortex tube, the cold air pipe of the vortex tube is connected to the air inlet hole of the cooling component, a branch pipe is also connected to the air inlet pipe, the branch pipe is connected to a sensor cover, the end of the branch pipe is inclined toward the filter screen, the cooling pipe is connected to a first stop valve, the hot air pipe is connected to a second stop valve, and the branch pipe is connected to a third stop valve.

2. A novel combustible gas detection device according to claim 1, characterized in that: The inner cylinder of the cooling assembly is also provided with a plurality of baffles.

3. A novel combustible gas detection device according to claim 2, characterized in that: The baffle is inclined upward at an angle of 5-10 degrees.

4. A novel combustible gas detection device according to claim 3, characterized in that: The cooling pipe is connected with a temperature display meter.

5. A novel combustible gas detection device according to claim 4, characterized in that: The bottom of the cooling cylinder is threadedly connected to a water collecting ring, which includes a ring body, an annular groove is provided in the ring body, a threaded connection portion is provided on the outer side of the ring body, a drainage hole is provided at the bottom of the annular groove, and a drainage joint is provided below the drainage hole.

6. A novel combustible gas detection device according to claim 5, characterized in that: The baffles are semicircular and arranged in a staggered manner on the inner cylinder of the cooling cylinder.

Images