Cryogenic environment pipeline gas detector

Abstract

The utility model relates to pipeline gas detection equipment technical field discloses a kind of pipeline gas detectors in ultralow temperature environment, including detector body, the upper end of the detector body is fixedly connected with probe connector, the front of the detector body is respectively provided with screen and control button in upper and lower sides, the front side of the detector body is provided with protective cover, the outside of the protective cover is provided with mounting assembly, the back of the protective cover is fixedly connected with rubber sealing ring, the front side surface of detector body is fixedly connected with electric heating ring, the front of the protective cover is provided with through-hole, the rear side of through-hole is fixedly connected with rubber sheet, the front of rubber sheet is fixedly connected with pressing block. In the utility model, the cooperation of the protective cover, mounting assembly, rubber sealing ring, electric heating ring, through-hole, rubber sheet and pressing block can form a sealed heat preservation space on the front side of the detector body, preventing the screen and control button from being disabled due to low temperature.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline gas detection equipment, and in particular to a pipeline gas detector for ultra-low temperature environments. Background Technology

[0002] In modern urban life, the safe operation of gas pipelines is crucial to protecting the lives and property of residents. However, due to pipeline aging, construction damage, or third-party sabotage, gas leaks occur frequently. In order to detect and deal with these potential safety hazards in a timely manner, gas detectors have become an indispensable tool. Pipeline gas detectors are devices specifically designed to detect gas leaks or concentrations in pipelines and are widely used in petrochemical, gas transmission, and municipal pipeline networks.

[0003] A search revealed Chinese Patent Publication No. CN213398452U, which discloses a portable pipeline gas detector. The detector includes a support rod, a slot, an mounting groove, and a limiting mechanism. The end of the support rod is detachably installed into the mounting groove on a connector. The support rod can be quickly assembled and disassembled with the detector body according to actual usage needs. During use, simply hold the adjusting rod with one hand and lift or press the support rod downwards with the other to allow the support rod to extend and retract freely within the adjusting groove. At this time, the elastic buckle slides relative to the upper limit hole of the adjusting rod. When adjusted to a suitable height, the elastic buckle falls into the limiting hole at the corresponding position, thus adjusting the extension length of the support rod.

[0004] In practical applications, the aforementioned pipeline gas detectors may be used in pipeline facilities in extremely cold regions. The ambient temperature is extremely low, and the detector needs to operate in a low-temperature environment. However, the buttons on the detector's surface may harden and become brittle in low-temperature environments, posing a risk of breakage or detachment due to repeated pressing. At the same time, low temperatures can also affect the performance of the liquid crystal or light-emitting elements on the screen of the detector, resulting in a deterioration in display quality. Therefore, an ultra-low temperature environment pipeline gas detector is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a pipeline gas detector for ultra-low temperature environments, which aims to improve the problem that the buttons and screens of existing pipeline gas detectors are directly exposed to the low temperature environment when used in ultra-low temperature environments, resulting in a significant reduction in their lifespan.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a low-temperature environment pipeline gas detector, comprising a detector body, a probe connector fixedly connected to the upper end of the detector body, a screen and control buttons respectively provided on the upper and lower sides of the front of the detector body, a protective cover provided on the front side of the detector body, an installation component provided on the outer side of the protective cover, the protective cover being detachably connected to the front of the detector body via the installation component, a rubber sealing ring fixedly connected to the back of the protective cover, an electric heating ring fixedly connected to the front surface of the detector body, a through hole opened on the front of the protective cover, a rubber sheet fixedly connected to the rear side of the through hole, and a pressing block fixedly connected to the front of the rubber sheet.

[0007] As a further description of the above technical solution:

[0008] The mounting assembly includes a lug and bolts. The lug is fixedly connected to the outside of the protective cover and is detachably connected to the front of the detector body by bolts.

[0009] As a further description of the above technical solution:

[0010] The protective cover has a double-layered hollow PC structure, and the inside of the protective cover is vacuum-sealed.

[0011] As a further description of the above technical solution:

[0012] The upper surface of the rubber sheet is concave at the center.

[0013] As a further description of the above technical solution:

[0014] The size and position of the through hole are adapted to the control buttons.

[0015] As a further description of the above technical solution:

[0016] The diameter of the rubber sheet is larger than the diameter of the through hole, and the rubber sheet is located directly behind the through hole.

[0017] As a further description of the above technical solution:

[0018] The pressing block is arranged in a semi-circular structure, and the front end of the pressing block protrudes from the through hole.

[0019] As a further description of the above technical solution:

[0020] Anti-slip strips are fixedly connected to both the left and right surfaces of the detector body, and limit handles are fixedly connected to both the left and right sides of the detector body.

[0021] As a further description of the above technical solution:

[0022] A silica gel desiccant box is fixedly connected to the inner front wall surface of the detector body, and a vent hole is provided on the back of the silica gel desiccant box.

[0023] As a further description of the above technical solution:

[0024] A gap is left between the back of the silica gel desiccant box and the back of the protective cover.

[0025] This utility model has the following beneficial effects:

[0026] 1. In this utility model, by combining the protective cover, mounting components, rubber sealing ring, electric heating ring, through hole, rubber sheet and pressing block, a sealed and heat-insulating space can be formed on the front side of the detector body to prevent the screen and control buttons from failing due to low temperature. At the same time, the operating force of the buttons can be transmitted to the outside of the protective cover through the rubber sheet and pressing block, so that the control buttons can be accurately triggered even when wearing thick gloves, and the heat insulation protection inside the protective cover is not affected.

[0027] 2. In this utility model, the combination of anti-slip strips and limit handles can enhance hand stability and prevent slippage caused by gloves in low-temperature environments. The combination of silicone desiccant box and vent holes can absorb moisture inside the protective cover and prevent low-temperature condensation from damaging the circuit. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a pipeline gas detector for ultra-low temperature environments proposed in this utility model;

[0029] Figure 2 This utility model proposes a pipeline gas detector for ultra-low temperature environments. Figure 1 A partial schematic diagram of point A;

[0030] Figure 3 This is a schematic diagram of the detector body of a pipeline gas detector for ultra-low temperature environment proposed in this utility model;

[0031] Figure 4 This is a schematic cross-sectional view of the back part of the protective cover of the ultra-low temperature environment pipeline gas detector proposed in this utility model.

[0032] Figure 5 This utility model proposes a pipeline gas detector for ultra-low temperature environments. Figure 4 A schematic diagram of part B;

[0033] Figure 6 This is a schematic diagram of the rubber sheet and pressing block of a pipeline gas detector for ultra-low temperature environment proposed in this utility model.

[0034] Legend:

[0035] 1. Detector body; 2. Probe connector; 3. Screen; 4. Control buttons; 5. Protective cover; 6. Mounting components; 61. Ear plate; 62. Bolt; 7. Rubber sealing ring; 8. Electric heating ring; 9. Through hole; 10. Rubber sheet; 11. Pressing block; 12. Anti-slip strip; 13. Limit handle; 14. Silica gel desiccant box; 15. Vent hole. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Reference Figures 1-3 This utility model provides an embodiment of a low-temperature environment pipeline gas detector, including a detector body 1. A probe connector 2 is fixedly connected to the upper end of the detector body 1. The probe connector 2 is used to connect to a probe. When the probe moves to the outside of the pipeline connection or inside the pipeline, the gas in the pipeline can enter the detector body 1 through the probe connector 2 for detection. The front of the detector body 1 is provided with a screen 3 and control buttons 4 on the upper and lower sides respectively. The detection information can be displayed on the screen 3. The user can operate the detector body 1 and control various functions of the instrument through the control buttons 4. A protective cover 5 is provided on the front side of the detector body 1. The protective cover 5 is a double-layer PC hollow structure. The light transmittance of the PC material is greater than 90% and it is impact resistant, so that the user can directly view the data displayed on the screen 3 through the protective cover 5. The inside of the protective cover 5 is set as a vacuum. The vacuum layer can block heat conduction and improve the heat preservation performance of the protective cover 5.

[0038] An installation component 6 is provided on the outside of the protective cover 5. The installation component 6 includes a lug 61 and a bolt 62. The lug 61 is fixedly connected to the outside of the protective cover 5. The lug 61 is detachably connected to the front of the detector body 1 by the bolt 62. With the cooperation of the lug 61 and the bolt 62, the protective cover 5 can be detachably installed on the front side of the detector body 1. The user can unscrew the bolt 62 to complete the removal of the protective cover 5, so that the staff can inspect and maintain the screen 3 and control buttons 4 on the front side of the detector body 1.

[0039] Reference Figures 4-6A rubber sealing ring 7 is fixedly connected to the back of the protective cover 5. When the protective cover 5 is installed on the front side of the detector body 1 through the mounting component 6, the protective cover 5 will squeeze the rubber sealing ring 7, causing the rubber sealing ring 7 to compress and deform to seal and fill the gap between the protective cover 5 and the detector body 1, so as to avoid gaps that would affect the sealing and heat preservation effect of the protective cover 5. An electric heating ring 8 is fixedly connected to the front surface of the detector body 1. The outer side of the electric heating ring 8 is wrapped with silicone to improve the insulation performance. At the same time, an NTC / PTC temperature sensor is installed on the front side of the detector body 1, which can monitor the internal temperature of the protective cover 5 in real time and control the electric heating ring 8 to only perform low-temperature heating to avoid excessive temperature that could damage the detector body 1.

[0040] The protective cover 5 has a through hole 9 on its front side. The size and position of the through hole 9 are adapted to the control button 4. A rubber sheet 10 is fixedly connected to the rear side of the through hole 9. The diameter of the rubber sheet 10 is larger than the diameter of the through hole 9. The rubber sheet 10 is located directly behind the through hole 9. The rubber sheet 10 can completely seal the through hole 9. At the same time, both the rubber sealing ring 7 and the rubber sheet 10 are made of fluorosilicone rubber or hydrogenated nitrile rubber, which have good low temperature resistance. A pressing block 11 is fixedly connected to the front side of the rubber sheet 10. The pressing block 11 is semi-circular in shape. The front end of the pressing block 11 protrudes from the through hole 9. The center of the upper surface of the rubber sheet 10 is recessed downward, which gives the rubber sheet 10 a larger deformation space, thereby reducing the impact of the pressing block 11 on the rubber sheet 10 when it moves downward, and thus extending the service life of the rubber sheet 10.

[0041] Reference Figure 1 and Figure 4 Anti-slip strips 12 are fixedly connected to both sides of the detector body 1. The anti-slip strips 12 can increase the friction when the user holds the detector body 1, reducing the risk of slipping and falling. Limit handles 13 are fixedly connected to both sides of the detector body 1. The user can put their fingers through the limit handles 13 to hold the detector body 1. The mechanical limit forms a physical fixation, so that the user can hold it firmly even if the gloves are frozen or wet. A silica gel desiccant box 14 is fixedly connected to the inner front wall of the detector body 1. The back of the silica gel desiccant box 14 has a vent hole 15. There is a gap between the back of the silica gel desiccant box 14 and the back of the protective cover 5. The silica gel desiccant inside the silica gel desiccant box 14 can interact with the air inside the protective cover 5 through the vent hole 15, thereby absorbing the moisture inside the protective cover 5 and continuously absorbing the water vapor inside the protective cover 5, preventing condensation from accumulating on the screen 3, control buttons 4, or circuit board.

[0042] Working principle: The user holds the detector through the limit handle 13, and the anti-slip strip 12 ensures stability under the low temperature gloves. Then, the user presses the control button 4 to start the device self-test and start the electric heating ring 8 to heat the inside of the protective cover 5 at a low temperature to prevent fogging or icing. The silica gel desiccant box 14 can actively absorb residual moisture inside the protective cover 5. The probe collects gas through the probe connector 2, and the data is displayed on the screen 3 in real time. When the device is not in use for a long time, the protective cover 5 can be removed by removing the bolt 62 to replace the desiccant or clean the inside. The front of the detector body 1 can also be directly inspected.

[0043] When the control button 4 needs to be pressed in an ultra-low temperature environment, the pressing block 11 can be pressed down directly. Through the cooperation of the pressing block 11 and the rubber sheet 10, the control button 4 can be pressed indirectly. The pressing operation is placed on the outside of the protective cover 5 to ensure the sealing and heat preservation effect inside the protective cover 5. This can prevent the ultra-low temperature environment from having a significant impact on the screen 3 and the control button 4. At the same time, in an ultra-low temperature environment, users will wear gloves, so the contact area with the pressing block 11 will be larger. When the front end of the pressing block 11 enters the through hole 9, the user can no longer press the pressing block 11, which can prevent excessive pressure on the control button 4 and damage to the control button 4.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cryogenic environment pipeline gas detector, comprising a detector body (1), characterized in that: The upper end of the detector body (1) is fixedly connected to a probe connector (2). The front and upper sides of the detector body (1) are respectively provided with a screen (3) and a control button (4). The front side of the detector body (1) is provided with a protective cover (5). The outer side of the protective cover (5) is provided with an installation component (6). The protective cover (5) is detachably connected to the front side of the detector body (1) through the installation component (6). The back side of the protective cover (5) is fixedly connected with a rubber sealing ring (7). The front surface of the detector body (1) is fixedly connected with an electric heating ring (8). The front side of the protective cover (5) is provided with a through hole (9). The back side of the through hole (9) is fixedly connected with a rubber sheet (10). The front side of the rubber sheet (10) is fixedly connected with a pressing block (11).

2. The ultra-low temperature environment pipeline gas detector according to claim 1, characterized in that: The mounting assembly (6) includes an ear plate (61) and a bolt (62). The ear plate (61) is fixedly connected to the outside of the protective cover (5). The ear plate (61) is detachably connected to the front of the detector body (1) by the bolt (62).

3. The ultra-low temperature environment pipeline gas detector according to claim 1, characterized in that: The protective cover (5) is a double-layered hollow PC structure, and the interior of the protective cover (5) is set as a vacuum.

4. The ultra-low temperature environment pipeline gas detector according to claim 1, characterized in that: The upper surface of the rubber sheet (10) is concave at the center.

5. The ultra-low temperature environment pipeline gas detector according to claim 1, characterized in that: The size and position of the through hole (9) are adapted to the control button (4).

6. The ultra-low temperature environment pipeline gas detector according to claim 1, characterized in that: The diameter of the rubber sheet (10) is larger than the diameter of the through hole (9), and the rubber sheet (10) is located directly behind the through hole (9).

7. The ultra-low temperature environment pipeline gas detector according to claim 1, characterized in that: The pressing block (11) is arranged in a semi-circular structure, and the front end of the pressing block (11) protrudes from the through hole (9).

8. A cryogenic environment pipeline gas detector according to claim 7, characterized in that: Anti-slip strips (12) are fixedly connected to both the left and right sides of the detector body (1), and limit handles (13) are fixedly connected to both the left and right sides of the detector body (1).

9. A cryogenic environment pipeline gas detector according to claim 7, characterized in that: A silica gel desiccant box (14) is fixedly connected to the inner front wall surface of the detector body (1), and a vent hole (15) is provided on the back of the silica gel desiccant box (14).

10. A cryogenic environment pipeline gas detector according to claim 9, characterized in that: A gap is left between the back of the silica gel desiccant box (14) and the back of the protective cover (5).

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