Portable gas leakage detection instrument

Abstract

The utility model discloses a portable gas leakage detection instrument, which relates to the technical field of gas equipment, aims to solve the technical problem that a semiconductor gas alarm is easily influenced by the external environment, and comprises a semiconductor leakage detector, a detection part is arranged at the bottom of the semiconductor leakage detector, and a shell is mounted at the bottom of the detection part. A fixing shell is arranged in the shell, an air bag filled with heated expansion gas is arranged on the inner circumference of the fixing shell, a heating piece is arranged in the center of the air bag, vortex fan blades are arranged at the bottom of the fixing shell, and a force storage structure is arranged between the vortex fan blades and the fixing shell. Through the working of the heating element, the design of heat insulation of the fixed shell, the constraint of point bonding of the air bag and the fixed shell and the design of internal heated expansion gas, and the cooperation of a force storage structure, the device has the advantages of improving the temperature, drying the air, improving the detection accuracy, utilizing heat energy and improving the detection effect.

Description

Technical Field

[0001] The utility model relates to the technical field of gas equipment, and more specifically to a portable gas leakage detection instrument. Background Art

[0002] Gas is a general term for gaseous fuels that burn and release heat for use by residents and industrial enterprises. For safety, gas leak detection instruments with convenient clamp-type installation are often used. Semiconductor gas alarms are a common device, but they are susceptible to environmental influences such as temperature and humidity, especially during the cold winter months in northern China. To address this, we propose a portable gas leak detection instrument. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, meet practical needs, and provide a portable gas leak detection instrument to solve the technical problem that current semiconductor gas alarms are easily affected by the external environment.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a portable gas leak detection instrument, including a semiconductor leak detector, a detection part is provided at the bottom of the semiconductor leak detector, a shell is installed at the bottom of the detection part, a fixed shell is provided inside the shell, an airbag filled with heated and expanded gas is provided on the inner periphery of the fixed shell, a heating element is provided in the center of the airbag, vortex fan blades are provided at the bottom of the fixed shell, and a power storage structure is provided between the vortex fan blades and the fixed shell.

[0005] Preferably, the upper half of the shell is a flared structure from top to bottom, a plurality of air ports are provided on the flared structure, the fixed shell is made of a heat-insulating material, and a first connecting rod is installed between the fixed shell and the shell.

[0006] Preferably, the airbag is bonded and fixed at multiple points to constrain the general position of the airbag periphery, and the heated and expanded gas is helium.

[0007] Preferably, the heating element is a heating rod, the bottom end portion of the heating element passes through the fixed shell, a power supply is provided on the outside of the heating element, and a protective cover is installed on the periphery of the through portion of the heating element.

[0008] Preferably, the force storage structure includes an electromagnetic plate arranged at the bottom of the airbag, and the electromagnetic plate moves up and down on the inner periphery of the fixed shell. The electromagnetic plate is made of magnetic material, and a metal layer fixed to the bottom of the fixed shell is provided below the electromagnetic plate. The bottom of the electromagnetic plate is connected to several extension rods that pass through the fixed shell.

[0009] Preferably, the bottom of the extension rod is connected to a lifting ring, the bottom of the lifting ring is provided with a shaft sleeve, and a second connecting rod is installed between the outer periphery of the shaft sleeve and the inner wall of the shell.

[0010] Preferably, the lifting ring is an annular structure, a cylindrical cam is provided at the center of the lifting ring, a protrusion fixed to the inner ring of the shaft sleeve is provided at the bottom of the cylindrical cam, and the protrusion is connected to the vortex fan blade.

[0011] Preferably, the top end of the cylindrical cam is rotatably connected to the bottom end of the heating element, a limiting ball is provided on the inner wall of the lifting ring, and a spring is provided in the central area of ​​the lifting ring.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model can realize the operation of the heating element by cooperating with the power supply and designing that the bottom part of the heating element passes through the fixed shell. Combined with the heat insulation design of the fixed shell, the high temperature of its heat source will not affect the detection part, so that it can heat the peripheral area, and the heat can assist in drying the surrounding area, thereby achieving the effect of increasing the temperature and drying the air, and solving the problem that the semiconductor gas alarm is easily affected by the external environment.

[0014] 2. The utility model also uses the constraint of the bonding of the airbag and the fixed shell point and the design of the internal heated and expanded gas, and then uses the cooperation of the cylindrical cam and the limit ball and the lifting and lowering drive of the lifting ring, combined with the adsorption of the electromagnetic plate and the metal layer and the elastic force of the spring. Therefore, during the process of thermal expansion, the airbag will press the electromagnetic plate downward, drive the extension rod to descend, and cooperate with the magnetic attraction of the electromagnetic plate to fix the electromagnetic plate to the metal layer. This process will stretch the spring to store force. When the spring force reaches the limit, the heating element is first turned off, the airbag retracts, and then the electromagnet stops running. The rapid recovery of the spring drives the eddy current fan blades to rotate, which can draw the surrounding air into the detection part, further improving the detection effect, and further reusing the heat energy to avoid heat energy waste while improving the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the cutaway outer shell portion of the present invention in a power storage limit state;

[0017] Figure 3 This is a disassembled schematic diagram of the present invention in a state of power storage limit;

[0018] Figure 4 This is a schematic structural diagram of the cylindrical cam in the utility model;

[0019] Figure 5 For this utility model Figure 3 A magnified view of the structure in the middle.

[0020] Explanation of the reference numerals in the figure: 1. Semiconductor leak detector; 2. Detection unit; 3. Housing; 4. Fixed housing; 5. Airbag; 6. Heating element; 7. Eddy current fan blade; 8. Power storage structure; 9. First connecting rod; 10. Power supply; 11. Protective cover; 12. Second connecting rod; 13. Fixing clamp;

[0021] 801. Electromagnetic plate; 802. Metal layer; 803. Extension rod; 804. Lifting ring; 805. Bushing; 806. Cylindrical cam; 807. Limiting ball; 808. Spring. DETAILED DESCRIPTION

[0022] like Figures 1 to 5 As shown, the utility model relates to a portable gas leak detection instrument, including a semiconductor leak detector 1, a fixing clamp 13 is provided on the back side of the semiconductor leak detector 1, and the fixing clamp 13 is adjustable so that it can be constrained and fixed to different pipes. A detection part 2 is provided at the bottom of the semiconductor leak detector 1, and a shell 3 is installed at the bottom of the detection part 2. The top of the shell 3 is threadedly fixed to the detection part 2, and the upper half of the shell 3 is a flared structure from top to bottom. The flared structure is provided with multiple air ports, which serve as air outlets. A fixed shell 4 is provided inside the shell 3, and the fixed shell 4 is made of a heat-insulating material. The heat-insulating material can be selected as fiberglass. A first connecting rod 9 is installed between the fixed shell 4 and the shell 3. A heating element 6 is provided in the center of the fixed shell 4. The heating element 6 is selected according to the situation. This design adopts a heating rod. The bottom end of the heating element 6 passes through the fixed shell 4. A power supply 10 is provided on the outside of the heating element 6. The power supply 10 can be a lithium battery or a button battery, etc., for easy replacement.

[0023] The working principle is to control the intermittent opening and closing of the heating element 6 through an external control structure. Through intermittent opening and closing, it can avoid long-term high temperature damage to surrounding components, and also save electricity resources. The operation of the heating element 6 can heat the peripheral area, increase the temperature, and avoid the low temperature affecting the accuracy of the detection. At the same time, the heat generated can also dry the surrounding air, and the heat-insulating material of the fixed shell 4 keeps the heating element 6 away from the detection part 2 to avoid being too close to the high temperature and affecting the accuracy of the detection.

[0024] In an embodiment of the present invention, in order to cooperate with the intermittent operation mechanism and further utilize the generated heat source, an airbag 5 filled with heated and expanded gas is provided on the inner periphery of the fixed shell 4. The airbag 5 is bonded and fixed at multiple points to constrain the general position of the outer periphery of the airbag 5. The heated and expanded gas is preferably helium, which has a high thermal expansion coefficient and a stable atomic structure without the risk of combustion or explosion. In order to protect the airbag 5, a protective cover 11 is installed on part of the outer periphery of the heating element 6. The protective cover 11 is made of heat-insulating material. Eddy current blades 7 are provided at the bottom of the fixed shell 4, and a power storage structure 8 is provided between the eddy current blades 7 and the fixed shell 4.

[0025] The power storage structure 8 includes an electromagnetic plate 801 arranged at the bottom of the airbag 5. The electromagnetic plate 801 moves up and down on the inner periphery of the fixed shell 4. The electromagnetic plate 801 is made of magnetic material. A metal layer 802 is provided below the electromagnetic plate 801 and fixed to the bottom of the fixed shell 4. The bottom of the electromagnetic plate 801 is connected to a plurality of extension rods 803 that pass through the fixed shell 4. The bottom of the extension rod 803 is connected to a lifting ring 804. The bottom of the lifting ring 804 is provided with a shaft sleeve 805. A second connecting rod 12 is installed between the outer periphery of the shaft sleeve 805 and the inner wall of the shell 3. The lifting ring 804 is an annular structure. A cylindrical cam 806 is provided in the center of the lifting ring 804. A protrusion fixed to the inner ring of the sleeve 805 is provided at the bottom of the cylindrical cam 806, and the protrusion is connected to the vortex fan blade 7. The top of the cylindrical cam 806 is rotatably connected to the bottom of the heating element 6. A limiting ball 807 is provided on the inner wall of the lifting ring 804, and a curved groove is provided on the outer periphery of the cylindrical cam 806. The curved groove fits snugly with the limiting ball 807. A spring 808 is provided in the central area of ​​the lifting ring 804. The two ends of the spring 808 are respectively connected to the lifting ring 804 and the bottom of the fixed shell 4. In the normal state when the spring 808 is not under force, the electromagnetic plate 801 can be separated from the metal layer 802 and suspended in the lower layer of the fixed shell 4.

[0026] Working principle: when the heating element 6 is in operation, it will heat the gas inside the airbag 5, causing it to expand due to the heat. During the expansion process, the airbag 5 will press the electromagnetic plate 801 downward, driving the extension rod 803 to descend, and cooperating with the magnetic attraction of the electromagnetic plate 801 (this is the start-up state, and the opening and closing are controlled by the control structure), so that the electromagnetic plate 801 can be attracted and fixed to the metal layer 802. This process will stretch the spring 808 to achieve force storage. When the spring 808 reaches the force storage limit, the heating element 6 is first turned off. The heat is affected by the cold environment and the temperature drops rapidly. The airbag 5 retracts, and then the start of the electromagnetic plate 801 is stopped. The rapid recovery of the spring 808 drives the lifting ring 804 to rise, causing the limit ball 807 to rise, causing the cylindrical cam 806 to rotate, and further driving the eddy current fan blades 7 to rotate, which can draw the surrounding air into the detection part 2. This reciprocating process can ensure that the humidity and temperature of the detected air are in good condition during intermittent operation, further improving the detection effect.

[0027] It is worth mentioning that the heating element 6 can be selected as heating equipment with different heating speeds and maximum heating temperatures, as well as gases with different temperatures and degrees of thermal expansion, to achieve adaptation to the ambient temperature and humidity in different local areas, and has applicability.

[0028] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A portable gas leak detection instrument, characterized in that: The invention comprises a semiconductor leakage detector (1), wherein a detection part (2) is provided at the bottom of the semiconductor leakage detector (1), a housing (3) is installed at the bottom of the detection part (2), a fixed housing (4) is provided inside the housing (3), an air bag (5) filled with heated and expanded gas is provided on the inner periphery of the fixed housing (4), a heating element (6) is provided at the center of the air bag (5), a vortex blade (7) is provided at the bottom of the fixed housing (4), and a power storage structure (8) is provided between the vortex blade (7) and the fixed housing (4).

2. A portable gas leak detection instrument according to claim 1, characterized in that: The upper half of the outer shell (3) is a flared structure from top to bottom, and a plurality of air ports are provided on the flared structure. The fixed shell (4) is made of a heat-insulating material, and a first connecting rod (9) is installed between the fixed shell (4) and the outer shell (3).

3. A portable gas leak detection instrument according to claim 2, characterized in that: The airbag (5) is bonded and fixed at multiple points to constrain the general position of the periphery of the airbag (5), and the heated expansion gas is helium.

4. A portable gas leak detection instrument according to claim 3, characterized in that: The heating element (6) is a heating rod, the bottom end portion of the heating element (6) passes through the fixed shell (4), a power supply (10) is provided on the outside of the heating element (6), and a protective cover (11) is installed on the outer periphery of the through portion of the heating element (6).

5. A portable gas leak detection instrument according to claim 4, characterized in that: The power storage structure (8) includes an electromagnetic plate (801) arranged at the bottom of the airbag (5), the electromagnetic plate (801) moves up and down on the inner periphery of the fixed shell (4), the electromagnetic plate (801) is made of magnetic material, a metal layer (802) fixed to the inner bottom of the fixed shell (4) is provided below the electromagnetic plate (801), and a plurality of extension rods (803) penetrating the fixed shell (4) are connected to the bottom of the electromagnetic plate (801).

6. A portable gas leak detection instrument according to claim 5, characterized in that: The bottom of the extension rod (803) is connected to a lifting ring (804), the bottom of the lifting ring (804) is provided with a shaft sleeve (805), and a second connecting rod (12) is installed between the outer periphery of the shaft sleeve (805) and the inner wall of the shell (3).

7. A portable gas leak detection instrument according to claim 6, characterized in that: The lifting ring (804) is an annular structure. A cylindrical cam (806) is provided at the center of the lifting ring (804). A protrusion fixed to the inner ring of the shaft sleeve (805) is provided at the bottom of the cylindrical cam (806). The protrusion is connected to the vortex blade (7).

8. A portable gas leak detection instrument according to claim 7, characterized in that: The top of the cylindrical cam (806) is rotatably connected to the bottom of the heating element (6), a limiting ball (807) is provided on the inner wall of the lifting ring (804), and a spring (808) is provided in the central area of ​​the lifting ring (804).

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