Chemical pipeline TDLAS trace leakage gas rapid detector
By combining a TDLAS laser sensor and an infrared distance sensor with a rotating base, the problem of insufficient sensitivity in detecting minute leaks in chemical pipelines has been solved, enabling rapid and accurate gas leak identification and early warning, thus ensuring the safety of chemical production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGYUAN OPTOELECTRONICS TECHNOLOGY (NANJING) CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-23
Smart Images

Figure CN224397629U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas detection technology, specifically a TDLAS rapid gas leak detector for chemical pipelines. Background Technology
[0002] In the chemical industry, pipeline systems play a crucial role in transporting various chemical raw materials, intermediates, and finished gases. These gases often possess dangerous characteristics such as toxicity, toxicity, flammability, and explosiveness. For example, natural gas, ethylene, and propylene transported in the petrochemical industry, and carbon monoxide and hydrogen transported in the coal chemical industry—even minor leaks from pipelines can potentially trigger serious safety accidents, such as fires and explosions. These accidents pose a significant threat to human life and may also lead to large-scale environmental pollution and enormous economic losses.
[0003] Traditional gas leak detection methods have many shortcomings when dealing with trace leaks in chemical pipelines. They have limited sensitivity, cannot accurately detect low concentrations of leaked gas, and are easily affected by other substances in the environment, leading to inaccurate detection results. To address this, a rapid gas leak detector for trace leaks in chemical pipelines, called TDLAS, is proposed. Utility Model Content
[0004] In view of this, the present invention provides a TDLAS rapid gas leak detector for chemical pipelines to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.
[0005] The technical solution of this utility model is implemented as follows: A TDLAS rapid gas leak detector for chemical pipelines includes a pan-tilt unit and two output shafts. The two output shafts are respectively installed at the output end of the pan-tilt unit. One end of one output shaft is fixedly connected to a first housing, and one end of the other output shaft is fixedly connected to a second housing. A TDLAS laser sensor is installed on the inner side wall of the first housing, a camera is installed on the inner side wall of the second housing, and an infrared distance sensor is installed at the bottom of the second housing.
[0006] More preferably, the bottom of the gimbal is equipped with a rotating base.
[0007] More preferably, the bottom of the rotating base is fixedly connected to a base plate, and four threaded holes are symmetrically opened at the four corners of the bottom of the base plate, and a cable management hole is opened at the center of the lower surface of the base plate.
[0008] More preferably, a protective plate is fixedly connected to the top of both the first housing and the second housing.
[0009] More preferably, two sleeves are symmetrically fixedly connected to both sides of the gimbal, and a sleeve is fitted inside each of the two sleeves. One end of each sleeve is fixedly connected to the first housing and the second housing, respectively.
[0010] More preferably, both the outer walls of the first housing and the second housing are provided with heat dissipation grooves.
[0011] The present invention has the following advantages due to the adoption of the above technical solution:
[0012] During use, this invention utilizes a TDLAS laser sensor to accurately detect minute leaks of gas. Combined with a rotating base and gimbal, it can quickly detect multiple points. A camera records the detected images, and an infrared distance sensor assesses the accuracy of the detection points. This allows for rapid and accurate detection of the type and concentration of leaked gas, providing timely warnings or automatic alarms. This effectively prevents safety accidents and environmental pollution caused by leaks, significantly improving the safety and environmental friendliness of chemical production, and providing a reliable guarantee for the normal operation of chemical enterprises.
[0013] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a structural diagram of the present invention;
[0016] Figure 2 This utility model Figure 1 Another perspective on the structure diagram;
[0017] Figure 3 This is a structural diagram of the gimbal and rotating base of this utility model;
[0018] Figure 4 This is a structural diagram of the first housing of this utility model.
[0019] Reference numerals: 1. Gimbal; 2. Output shaft; 3. First housing; 4. Second housing; 5. TDLAS laser sensor; 6. Camera; 7. Infrared distance sensor; 8. Rotating base; 9. Base plate; 10. Threaded hole; 11. Cable management hole; 12. Protective plate; 13. Heat dissipation groove; 14. Sleeve; 15. Sleeve. Detailed Implementation
[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0021] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0022] like Figure 1-4 As shown, this utility model embodiment provides a TDLAS rapid gas leak detector for chemical pipelines, including a pan-tilt unit 1 and two output shafts 2. The two output shafts 2 are respectively installed at the output end of the pan-tilt unit 1. One end of one output shaft 2 is fixedly connected to a first housing 3, and one end of the other output shaft 2 is fixedly connected to a second housing 4. A TDLAS laser sensor 5 is installed on the inner side wall of the first housing 3, a camera 6 is installed on the inner side wall of the second housing 4, and an infrared distance sensor 7 is installed at the bottom of the second housing 4.
[0023] In one embodiment, a rotating base 8 is installed at the bottom of the gimbal 1; by setting the rotating base 8, the rotating base 8 drives the gimbal 1 to rotate, thereby adjusting the angles of the TDLAS laser sensor 5, camera 6 and infrared distance sensor 7 on the gimbal 1.
[0024] In one embodiment, a base plate 9 is fixedly connected to the bottom of the rotating base 8. Four threaded holes 10 are symmetrically opened at the four corners of the bottom of the base plate 9, and a cable management hole 11 is opened at the center of the lower surface of the base plate 9. By setting the base plate 9, the fixing bolts are inserted into the threaded holes 10 and the mounting holes to install and fix the position of the base plate 9. The cable management hole 11 facilitates the sorting of cables.
[0025] In one embodiment, a protective plate 12 is fixedly connected to the top of both the first housing 3 and the second housing 4; the protective plate 12 provides protection for the top of the first housing 3 and the second housing 4.
[0026] In one embodiment, two sleeves 15 are symmetrically fixedly connected to both sides of the gimbal 1. Each sleeve 15 has a sleeve 14 inside it. One end of each sleeve 14 is fixedly connected to the first housing 3 and the second housing 4, respectively. With the sleeve 14, the sleeve 14 rotates in the sleeve 15, which improves the rotation of the first housing 3 and the second housing 4.
[0027] In one embodiment, heat dissipation grooves 13 are provided on the outer side walls of both the first housing 3 and the second housing 4; the TDLAS laser sensor 5 and the camera 6 in the first housing 3 and the second housing 4 are cooled by the heat dissipation grooves 13.
[0028] When this utility model is in operation: First, the fixing bolts are inserted into the threaded holes 10 and the mounting holes to fix the position of the base plate 9. By rotating the base 8 in conjunction with the gimbal 1, the angles of the TDLAS laser sensor 5, the camera 6 and the infrared distance sensor 7 are adjusted. The TDLAS laser sensor 5 detects the chemical pipeline at the preset detection point, while the camera 6 records the detection image. The infrared distance sensor 7 judges the distance in front. If the distance between the detection point and the detection point is abnormal, the staff removes the obstacles in front to prevent them from obstructing the detection point.
[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A TDLAS rapid gas leak detector for chemical pipelines, characterized in that: It includes a gimbal (1) and two output shafts (2). The two output shafts (2) are respectively installed at the output end of the gimbal (1). One end of one output shaft (2) is fixedly connected to a first housing (3), and one end of the other output shaft (2) is fixedly connected to a second housing (4). A TDLAS laser sensor (5) is installed on the inner wall of the first housing (3), a camera (6) is installed on the inner wall of the second housing (4), and an infrared distance sensor (7) is installed at the bottom of the second housing (4).
2. The TDLAS rapid gas leak detector for chemical pipelines according to claim 1, characterized in that: The bottom of the gimbal (1) is equipped with a rotating base (8).
3. The TDLAS rapid gas leak detector for chemical pipelines according to claim 2, characterized in that: The bottom of the rotating base (8) is fixedly connected to a base plate (9). Four threaded holes (10) are symmetrically opened at the four corners of the bottom of the base plate (9). A cable management hole (11) is opened at the center of the lower surface of the base plate (9).
4. The TDLAS rapid gas leak detector for chemical pipelines according to claim 1, characterized in that: The top of both the first housing (3) and the second housing (4) are fixedly connected with protective plates (12).
5. The TDLAS rapid gas leak detector for chemical pipelines according to claim 1, characterized in that: Two sleeves (15) are symmetrically fixedly connected to both sides of the gimbal (1). Each sleeve (15) has a sleeve (14) inside it. One end of each sleeve (14) is fixedly connected to the first housing (3) and the second housing (4) respectively.
6. The TDLAS rapid gas leak detector for chemical pipelines according to claim 1, characterized in that: The outer walls of the first housing (3) and the second housing (4) are provided with heat dissipation grooves (13).