A high-precision industrial combustible gas detector

Abstract

The present invention relates to the technical field of gas detectors, and in particular to a high-precision industrial combustible gas detector, comprising a shell, a detection tube fixedly connected to the bottom of the shell, a mounting groove provided at the bottom of the detection tube, a rotation adjustment mechanism provided inside the mounting groove, the rotation adjustment mechanism comprising fixed grooves provided on the left and right side walls of the detection tube, a wind force detection mechanism provided on both sides of the detection tube, and the wind force detection mechanism located inside the fixed groove. The present invention detects the wind force of the airflow on both sides of the detector through the wind force detection mechanism, and at the same time, the elastic wind vent membrane is deformed to different degrees through the airflow velocity difference generated by the different wind forces on both sides, and the rotation direction of the detection disk is automatically corrected and adjusted according to the detection results, so that the detection head contacts the gas to be detected with the maximum contact area, effectively improving the accuracy of the gas detector detection results.

Description

Technical Field

[0001] The invention relates to the technical field of gas detectors, and in particular to a high-precision industrial combustible gas detector. Background Art

[0002] A gas detector, also known as a gas detector, is an instrument tool for detecting gas leaks. In order to ensure the safety of industrial production, it is necessary to install an industrial combustible gas detector above the boiler to achieve real-time monitoring of the gas, which can effectively reduce the safety hazards caused by gas leaks in industrial production.

[0003] Existing industrial combustible gas detectors are mostly installed at a fixed angle above large industrial production equipment such as boilers when in use. In order to ensure the safe use of large industrial equipment, it is necessary to ensure good air flow around it. However, the rapid flow of surrounding wind will also drive the gas to be tested to flow synchronously. At this time, the detection head cannot contact the flowing airflow with the optimal contact area to achieve detection, resulting in the inability to accurately detect gas concentration, which poses certain safety hazards. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high-precision industrial combustible gas detector, which solves the technical problem of poor detection accuracy caused by a fixed angle of the detection head.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-precision industrial combustible gas detector, comprising a shell, a detection tube is fixedly connected to the bottom of the shell, a mounting groove is provided at the bottom of the detection tube, a rotation adjustment mechanism is provided inside the mounting groove, the rotation adjustment mechanism comprises a fixing groove provided on the left and right side walls of the detection tube, a wind force detection mechanism is provided on both sides of the detection tube, and the wind force detection mechanism is located inside the fixing groove;

[0006] The wind force detection mechanism includes a positioning sleeve fixedly connected to the outside of the fixing groove, an elastic wind-circling membrane is provided on the inner side of the positioning sleeve, a conical cylinder is provided on the inner side of the elastic wind-circling membrane, the conical cylinder is fixedly connected to the inner wall of the fixing groove, the elastic wind-circling membrane is located between the positioning sleeve and the conical cylinder, and a fixing cylinder is fixedly installed on the inner end of the conical cylinder.

[0007] A piston is slidably installed inside the fixed cylinder, an outer wall of the piston is fixedly connected with a ring-shaped conductive contact, an inner wall of the fixed cylinder is fixedly connected with a conical sleeve, an inner end of the fixed cylinder is fixedly connected with an electromagnet, and the other end of the electromagnet is fixedly connected with a spring.

[0008] Preferably, the conical sleeve is configured to be an inverted cone with a constant inner diameter and an outer diameter that gradually decreases from the inside to the outside, and the conical side walls of the conical sleeve are fixedly connected with conductive rings at equal intervals.

[0009] The inner diameter of the conductive ring is consistent with the diameter of the conductive contact piece, and the conductive ring and the conductive contact piece are electrically connected to the electromagnet.

[0010] Preferably, the rotation adjustment mechanism includes a support rod fixedly connected to the front and rear side walls of the mounting groove, the upper end of the support rod is sleeved with a rotating sleeve, the bottom wall of the rotating sleeve is fixedly connected to a magnetic rotating rod, and the left and right side walls of the magnetic rotating rod are respectively fixedly connected to the ends of the spring.

[0011] The bottom end of the magnetic rotating rod is fixedly connected with a detection plate, and the inner center of the detection plate is fixedly connected with a detection head for detecting gas.

[0012] The detection plate is configured as a conical plate that is narrow at the top and wide at the bottom, and a gap is left between the top wall of the detection plate and the inner wall of the mounting groove.

[0013] The support rod is located at the center of the inner wall of the installation groove, and the interiors of the conical cylinders on both sides are filled with equal volumes of carbon dioxide gas.

[0014] By means of the above technical solution, the present invention provides a high-precision industrial combustible gas detector, which has at least the following beneficial effects:

[0015] 1. The present invention realizes the detection of the wind force of the airflow on both sides of the detector through the wind force detection mechanism. At the same time, the airflow velocity difference generated by the different wind forces on both sides drives the elastic wind-shaking membrane to deform to different degrees. The rotation direction of the detection disk is automatically corrected and adjusted according to the detection results, so that the detection head contacts the gas to be detected with the maximum contact area, which effectively improves the accuracy of the detection results of the gas detector.

[0016] 2. In the present invention, when the wind force detection mechanism is working, the elastic wind-shaking membrane is deformed to different degrees, thereby achieving different degrees of compression of the gas inside the conical cylinder, thereby driving the piston to slide along the inside of the fixed cylinder, and achieving contact and electrification of the conductive contact piece with each conductive ring under different airflow velocity conditions, and applying the wind force detection result to the rotating adjustment mechanism, thereby achieving accurate detection of the difference in airflow velocity on both sides of the detector, and the detection result is particularly accurate.

[0017] 3. The present invention uses the detection results of different air flow velocities by the wind detection mechanism to act on the rotation adjustment mechanism, and realizes power supply to the electromagnet according to the difference in resistance value of the annular conductive ring. The magnetic rotating rod and the detection plate are driven by the electromagnetic adsorption force to perform synchronous rotation correction, thereby achieving the synchronous and precise adjustment of the rotation angle of the detection plate according to the detection results, ensuring that the detection plate and the gas to be measured always maintain the maximum contact area, and further ensuring the detection accuracy of the gas detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal sectional three-dimensional structure of the detection tube of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal cross-sectional three-dimensional structure of the wind force detection mechanism of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the positional relationship between the conical sleeve and the conductive ring of the present invention;

[0024] Figure 6 It is a schematic diagram of the internal cross-sectional side view of the detection tube of the present invention.

[0025] In the figure: 1. Shell; 2. Detection tube; 20. Installation slot; 21. Fixed slot; 22. Support rod; 23. Rotating sleeve; 24. Magnetic rotating rod; 3. Wind force detection mechanism; 30. Positioning sleeve; 31. Elastic wind-shaking membrane; 32. Conical tube; 33. Fixed tube; 34. Piston; 35. Conductive contact piece; 36. Conical sleeve; 37. Electromagnet; 38. Spring; 39. Conductive ring; 4. Detection disk; 5. Detection head. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] Please refer to Figure 1-Figure 4A high-precision industrial combustible gas detector comprises a shell 1, a detection tube 2 is fixedly connected to the bottom of the shell 1, a mounting groove 20 is provided at the bottom of the detection tube 2, a rotation adjustment mechanism is provided inside the mounting groove 20, and the rotation adjustment mechanism comprises a fixing groove 21 provided on the left and right side walls of the detection tube 2, a wind force detection mechanism 3 is provided on the left and right sides of the detection tube 2, and the wind force detection mechanism 3 is located inside the fixing groove 21. Before use, the shell 1 is installed on the upper end of the boiler of the industrial equipment to be tested, and the wires on the top are connected to electricity. When in use, the wind force detection mechanisms 3 on both sides of the detection tube 2 realize real-time monitoring of the wind force on both sides of the boiler. When in use, different airflow velocities on both sides act on the wind force detection mechanism 3 when air flows. According to the detection result, the rotation correction works synchronously to realize the tilt correction of the detection angle to ensure the maximum detection area, thereby improving the accuracy of the detection result;

[0029] The wind force detection mechanism 3 includes a positioning sleeve 30 fixedly connected to the outer side of the fixing groove 21, an elastic air vent membrane 31 is provided on the inner side of the positioning sleeve 30, a conical cylinder 32 is provided on the inner side of the elastic air vent membrane 31, and the conical cylinder 32 is fixedly connected to the inner wall of the fixing groove 21, the elastic air vent membrane 31 is located between the positioning sleeve 30 and the conical cylinder 32, and a fixing cylinder 33 is fixedly installed on the inner end of the conical cylinder 32. When the wind force on both sides is the same, the first elastic air vent membrane 31 undergoes the same elastic deformation. At this time, the detection results of the wind force detection mechanisms 3 on both sides are the same. At this time, the rotation adjustment mechanism does not rotate, and the detection disk 4 remains vertical to realize real-time monitoring of the combustible gas on the top of the industrial equipment. When the wind force on both sides is different, the elastic air vent membrane 31 inside the wind force detection mechanism 3 undergoes different degrees of elastic deformation. At this time, the detection results on both sides are different, thereby driving the rotation adjustment mechanism to rotate, and the maximum contact area between the detection head 5 and the gas is achieved through the rotation of the detection disk 4.

[0030] A piston 34 is slidably installed inside the fixed cylinder 33, and a ring-shaped conductive contact piece 35 is fixedly connected to the outer wall of the piston 34. A conical sleeve 36 is fixedly connected to the inner wall of the fixed cylinder 33. An electromagnet 37 is fixedly connected to the inner end of the fixed cylinder 33, and a spring 38 is fixedly connected to the other end of the electromagnet 37. Taking the wind force detection mechanism 3 with a larger wind force on one side as an example, when the wind force on this side is larger, the elastic wind-shaking membrane 31 undergoes a large degree of elastic deformation, and the carbon dioxide gas in the internal gas of the fixed cylinder 33 is compressed to a large extent. Under the driving effect of the gas compression, the piston 34 is driven to slide to a large extent along the inside of the fixed cylinder 33. At this time, the conductive contact piece 35 and the conductive ring 39 at a farther distance are in contact and energized, thereby enhancing the current of the electromagnet 37, thereby enhancing the electromagnetic adsorption force, thereby realizing the rotation of the magnetic rotating rod 24 toward the side with larger wind force, and then the detection disk 4 and the detection head 5 rotate synchronously toward the side with larger wind force, thereby achieving the maximum contact area between the detection head 5 and the gas to be measured, thereby ensuring the accuracy of the combustible gas detection result. The wind force detection mechanism 3 is used to detect the wind force on both sides of the detector. At the same time, the airflow velocity difference caused by the different wind forces on both sides drives the elastic wind-shaking membrane 31 to deform to different degrees. The rotation direction of the detection disk 4 is automatically corrected and adjusted according to the detection results, so that the detection head 5 contacts the gas to be detected with the maximum contact area, which effectively improves the accuracy of the detection results of the gas detector.

[0031] Embodiment 2

[0032] Please refer to Figure 4-Figure 5 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0033] The conical sleeve 36 is set to an inverted cone with the same inner diameter and an outer diameter that gradually decreases from the inside to the outside. The conical side walls of the conical sleeve 36 are equidistantly fixedly connected with conductive rings 39. The outer diameter size difference of the conductive rings 39 is set to achieve that when the wind force is strong, the conductive contact piece 35 and the farther conductive ring 39 are in contact and energized. Since the farther conductive ring 39 has a larger diameter, its resistance value is smaller, and the corresponding current flowing through the electromagnet 37 is greater, and the electromagnetic adsorption force at this time is greater, thereby pulling the spring 38 on the side with greater wind force to compress it, and the spring 38 on the other side with less wind force is extended, thereby achieving synchronous changes in the rotation adjustment mechanism according to different wind force conditions. When the wind force detection mechanism 3 is working, the elastic wind-shaking membrane 31 is deformed to different degrees, thereby achieving different degrees of compression of the gas inside the conical cylinder 32, thereby driving the piston 34 to slide along the inside of the fixed cylinder 33, and achieving the contact and power supply of the conductive contact piece 35 with each conductive ring 39 under different airflow velocity conditions, and the wind force detection result is applied to the rotating adjustment mechanism, thereby achieving accurate detection of the difference in airflow velocity on both sides of the detector, and the detection result is particularly accurate.

[0034] As a preferred technical solution of this embodiment, the inner diameter of the conductive ring 39 is consistent with the diameter of the conductive contact 35, ensuring that the conductive contact 35 is tightly fitted with the conductive ring 39 during the sliding process of the piston 34, thereby ensuring the airtightness inside the conical cylinder 32. The conductive ring 39 and the conductive contact 35 are electrically connected to the electromagnet 37, so that when the two are in contact, the electromagnet 37 is energized synchronously, driving the rotating adjustment mechanism to open synchronously.

[0035] Embodiment 3

[0036] Please refer to Figure 6 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0037] The rotation adjustment mechanism includes a support rod 22 fixedly connected to the front and rear side walls of the mounting groove 20, a rotating sleeve 23 is sleeved on the upper end of the support rod 22, a magnetic rotating rod 24 is fixedly connected to the bottom wall of the rotating sleeve 23, and the left and right side walls of the magnetic rotating rod 24 are respectively fixedly connected to the ends of the spring 38. When the detection result of the wind force detection mechanism 3 is transmitted to the rotation adjustment mechanism, under the action of the electromagnetic adsorption force of the electromagnet 37, the magnetic rotating rod 24 is driven to move toward the side with greater electromagnetic attraction, and at this time, the rotating sleeve 23 is synchronously rotated along the support rod 22, so as to realize the adaptive rotation of the rotation adjustment mechanism. The detection result of the wind force detection mechanism 3 on different airflow velocities acts on the rotation adjustment mechanism, and the electromagnet 37 is powered according to the difference in the resistance value of the annular conductive ring 39. The electromagnetic adsorption force drives the magnetic rotating rod 24 and the detection plate 4 to rotate synchronously and correct, so as to achieve the synchronous and precise adjustment of the rotation angle of the detection plate 4 according to the detection result, ensure that the detection plate 4 and the gas to be detected always maintain the maximum contact area, and further ensure the detection accuracy of the gas detector.

[0038] As a preferred technical solution of this embodiment, a detection plate 4 is fixedly connected to the bottom end of the magnetic rotating rod 24, and a detection head 5 for detecting gas is fixedly connected to the inner center of the detection plate 4. Real-time detection of the gas to be detected is achieved through the detection head 5. The detection plate 4 is configured as a conical plate that is narrow at the top and wide at the bottom, so that when the detection plate 4 rotates, the contact area between the bottom wall of the detection plate 4 and the gas to be detected is maximized, and a gap is left between the top wall of the detection plate 4 and the inner wall of the mounting groove 20 to prevent the top of the detection plate 4 from contacting the mounting groove 20 when the detection plate 4 rotates, thereby preventing the normal rotation of the detection plate 4 from being hindered.

[0039] As the preferred technical solution of this embodiment, the support rod 22 is located at the center of the inner wall of the mounting groove 20, ensuring that the spacing between the wind detection mechanism 3 and the support rod 22 on both sides is the same, thereby ensuring the accuracy of the wind detection results. The interiors of the conical cylinders 32 on both sides are filled with equal volumes of carbon dioxide gas to control external variables, thereby ensuring that the internal sliding distance of the piston 34 along the fixed cylinder 33 is only determined by the size of the wind.

[0040] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0041] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0042] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the above embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision industrial combustible gas detector, comprising a housing (1), characterized in that: The bottom of the housing (1) is fixedly connected to a detection tube (2), the bottom of the detection tube (2) is provided with a mounting groove (20), a rotation adjustment mechanism is provided inside the mounting groove (20), the rotation adjustment mechanism comprises a fixing groove (21) provided on the left and right side walls of the detection tube (2), the left and right sides of the detection tube (2) are provided with a wind force detection mechanism (3), and the wind force detection mechanism (3) is located inside the fixing groove (21); The wind force detection mechanism (3) comprises a positioning sleeve (30) fixedly connected to the outside of the fixing groove (21); an elastic wind-raising membrane (31) is provided on the inner side of the positioning sleeve (30); a conical cylinder (32) is provided on the inner side of the elastic wind-raising membrane (31); the conical cylinder (32) is fixedly connected to the inner wall of the fixing groove (21); the elastic wind-raising membrane (31) is located between the positioning sleeve (30) and the conical cylinder (32); and a fixing cylinder (33) is fixedly installed on the inner end of the conical cylinder (32); A piston (34) is slidably mounted inside the fixed cylinder (33), an outer wall of the piston (34) is fixedly connected to a conductive contact piece (35) arranged in an annular manner, an inner wall of the fixed cylinder (33) is fixedly connected to a conical sleeve (36), an inner end of the fixed cylinder (33) is fixedly connected to an electromagnet (37), and the other end of the electromagnet (37) is fixedly connected to a spring (38); The rotation adjustment mechanism comprises a support rod (22) fixedly connected to the front and rear side walls of the mounting groove (20); the upper end of the support rod (22) is sleeved with a rotation sleeve (23); the bottom wall of the rotation sleeve (23) is fixedly connected to a magnetic rotating rod (24); and the left and right side walls of the magnetic rotating rod (24) are respectively fixedly connected to the ends of the spring (38).

2. A high-precision industrial combustible gas detector according to claim 1, characterized in that: The conical sleeve (36) is arranged in an inverted cone shape with a constant inner diameter and an outer diameter that gradually decreases from the inside to the outside, and the conical side wall of the conical sleeve (36) is fixedly connected with conductive rings (39) at equal intervals.

3. A high-precision industrial combustible gas detector according to claim 2, characterized in that: The inner diameter of the conductive ring (39) is consistent with the diameter of the conductive contact piece (35), and the conductive ring (39) and the conductive contact piece (35) are electrically connected to the electromagnet (37).

4. A high-precision industrial combustible gas detector according to claim 1, characterized in that: The bottom end of the magnetic rotating rod (24) is fixedly connected to a detection disk (4), and the inner center of the detection disk (4) is fixedly connected to a detection head (5) for detecting gas.

5. A high-precision industrial combustible gas detector according to claim 4, characterized in that: The detection plate (4) is configured as a conical plate that is narrow at the top and wide at the bottom, and a gap is left between the top wall of the detection plate (4) and the inner wall of the mounting groove (20).

6. The high-precision industrial combustible gas detector according to claim 1, characterized in that: The support rod (22) is located at the center of the inner wall of the installation groove (20), and the interiors of the conical cylinders (32) on both sides are filled with an equal volume of carbon dioxide gas.

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