Gas chromatograph gas leakage detection mechanism

Abstract

The utility model provides a gas leakage detection mechanism of a gas chromatograph, and relates to the technical field of gas leakage detection. The gas chromatograph gas leakage detection mechanism comprises a positioning shell, the inner side of the positioning shell is fixedly connected with a sealing ring, and the outer side of the positioning shell is fixedly connected with a warning supporting frame. According to the gas chromatograph gas leakage detection mechanism, the sealing ring is arranged on the inner side of the positioning shell, so that the device can detect a circular tube while being fixed, and the covering disc capable of moving transversely is arranged, so that the device can be extruded and attached when the connection position is detected, and the situation that the connection position of the circular tube and a plane cannot be attached and detected is prevented; by arranging the chamfer at the center of the fitting rubber disc, gas at the connection position of the circular pipe and the flat plate can be collected for convenient detection, fitting and sealing of the circular pipe interface are achieved, the connection position of the pipeline and the flat plate can be fitted and sealed for detection, and the problem that the gas leakage condition cannot be directly detected due to inconvenient fitting of the connection position of the pipeline and the flat plate is solved.

Description

Technical Field

[0001] This utility model relates to the field of gas leak detection technology, specifically a gas chromatograph leak detection mechanism. Background Technology

[0002] Gas chromatography is an instrument that uses chromatographic separation and detection techniques to perform qualitative and quantitative analysis of complex mixtures of multiple components. It is typically used to analyze thermally stable organic compounds in soil with boiling points not exceeding 500°C, such as volatile organic compounds, organochlorines, organophosphorus compounds, polycyclic aromatic hydrocarbons, and phthalates.

[0003] Chinese Patent Publication No. CN220819331U discloses a leak detection device for a gas chromatograph, including a fixed connecting plate. A controller, an alarm, and a handle are connected to the end face of the fixed connecting plate. A quick-clamping structure is connected to the bottom of the fixed connecting plate, and multiple leak detectors are connected to the quick-clamping structure. A battery is connected to the bottom of the fixed connecting plate. This design, by incorporating a quick-clamping structure in the gas chromatograph leak detection device, utilizes a drive motor within the quick-clamping structure to rapidly detect leaks at the gas chromatograph connection points via a transmission structure. This allows for rapid detection of leaks at the gas chromatograph tubing connections during use, making it very convenient to use and solving the problem of not being able to quickly detect leaks at gas chromatograph tubing connections.

[0004] Current gas chromatographs cannot seal the connection between the circular tube and the plane when detecting leaks, nor can they detect the connection between the pipe and the plane. Therefore, a gas chromatograph leak detection mechanism is proposed to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a gas chromatograph leak detection mechanism, which solves the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a gas chromatograph leak detection mechanism, comprising a positioning shell, a sealing ring fixedly connected to the inner side of the positioning shell, a warning support frame fixedly connected to the outer side of the positioning shell, a first detection mechanism snapped onto the surface of the warning support frame, the first detection mechanism penetrating the positioning shell and communicating with the sealing ring, a force-bearing ring fixedly connected to the end face of the positioning shell, a guide rod fixedly connected to the surface of the force-bearing ring, a movable sleeve slidably connected to the surface of the guide rod, a cover plate fixedly connected to the outer surface of the movable sleeve, an electric telescopic rod fixedly connected to the surface of the force-bearing ring, the free end of the electric telescopic rod fixedly connected to the cover plate, a sealing edge fixedly connected to the surface of the cover plate, a mating interface fixedly connected to the surface of the cover plate, the mating interface being connected to a second detection mechanism via a hose, the second detection mechanism snapping onto the warning support frame, and a rubber mat slidably connected to the end of the cover plate away from the electric telescopic rod, the rubber mat communicating with the mating interface.

[0009] Preferably, the bonding rubber disc is composed of two semi-circular rings, and the bonding rubber disc is circular in shape. A sliding groove key is provided on the side of the bonding rubber disc near the cover disc, and a blocking wall is provided on the side of the bonding rubber disc away from the cover disc. A chamfer is provided at the center of the side of the bonding rubber disc away from the cover disc, and a small hole is provided on the side of the bonding rubber disc and communicates with the interface.

[0010] Preferably, the sealing ring is disposed inside the positioning shell, which consists of two parts connected by screws, and the inner side of the sealing ring is provided with an annular protruding sealing strip.

[0011] Preferably, the first detection mechanism consists of a connecting pipe and an airflow detector, and the second detection mechanism is the same as the first detection mechanism. Both the first and second detection mechanisms are connected to the alarm via a line, and the alarm is fixedly connected to the alarm support frame.

[0012] Preferably, the cover plate is semi-circular in shape, and the surface of the cover plate is provided with a track groove, with the key of the track groove being slidably connected to the track groove.

[0013] Preferably, the interface consists of a connecting plate and a pipe, the connecting plate is fixedly connected to the sealing edge, and the pipe of the interface passes through the sealing edge and communicates with the second detection mechanism.

[0014] Preferably, the sealing edge is annular in shape, the outer surface of the sealing edge is conical, and the sealing edge wraps around the outside of the rubber disc.

[0015] (III) Beneficial Effects

[0016] This invention provides a gas chromatograph leak detection mechanism. It has the following beneficial effects:

[0017] 1. This gas chromatograph leak detection mechanism, by setting a sealing ring on the inner side of the positioning shell, allows the device to detect round tubes while in a fixed position. By setting a cover plate that can move laterally, the device can squeeze and fit when detecting connection positions, preventing the connection between the round tube and the flat plate from being unable to be detected. By setting a chamfer in the center of the fitting rubber plate, the gas at the connection position between the round tube and the flat plate can be collected for easy detection. This achieves a tight seal between the round tube interface and the connection position between the pipe and the flat plate, solving the problem that the connection position between the pipe and the flat plate is inconvenient to fit and cannot directly detect leaks.

[0018] 2. The gas chromatograph leak detection mechanism improves the airtightness of the device by setting a rotatable rubber disc inside the cover plate. By setting a second detection mechanism connected to the groove on the surface of the rubber disc, the collected gas can be detected in a timely manner. This achieves the goal of collecting gas at the connection between the pipeline and the plane to detect the leak status at the connection, thus solving the problem of inconvenient detection at the connection between the pipeline and the plane. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the external structure of the positioning shell of this utility model;

[0021] Figure 3 This is a schematic diagram of the sealing ring structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the rubber disc structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the second testing mechanism of this utility model.

[0024] The components include: positioning shell-1, sealing ring-2, warning support frame-3, first detection mechanism-4, airflow detector-41, warning device-42, force ring-5, guide rod-6, moving sleeve-7, cover plate-8, track slide groove-81, electric telescopic rod-9, sealing edge-10, mating interface-11, second detection mechanism-12, fitting rubber plate-13, slide key-131, and blocking wall-132. Detailed Implementation

[0025] 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.

[0026] This utility model embodiment provides a gas chromatograph leak detection mechanism, such as... Figure 1-5 As shown, it includes a positioning shell 1, and a sealing ring 2 is fixedly connected to the inner side of the positioning shell 1. The sealing ring 2 is located inside the positioning shell 1. The positioning shell 1 is composed of two parts and connected by screws. The inner side of the sealing ring 2 is provided with an annular protruding sealing strip. The sealing ring 2 can fit with the round tube, and after the positioning shell 1 is clamped and fixed, the sealing ring 2 can seal the round tube that is wrapped.

[0027] A warning support frame 3 is fixedly connected to the outside of the positioning shell 1. A first detection mechanism 4 is snapped onto the surface of the warning support frame 3. The first detection mechanism 4 passes through the positioning shell 1 and communicates with the sealing ring 2. A force-bearing ring 5 is fixedly connected to the end face of the positioning shell 1. A guide rod 6 is fixedly connected to the surface of the force-bearing ring 5. A movable sleeve 7 is slidably connected to the surface of the guide rod 6. A cover plate 8 is fixedly connected to the outer surface of the movable sleeve 7. An electric telescopic rod 9 is fixedly connected to the surface of the force-bearing ring 5. The free end of the electric telescopic rod 9 is fixedly connected to the cover plate 8. A sealing edge 10 is fixedly connected to the surface of the cover plate 8. A mating interface 11 is fixedly connected to the surface of the cover plate 8. The mating interface 11 is connected to the second detection mechanism 12 through a flexible hose. The first detection mechanism 4 consists of a connecting pipe and an airflow detector 41. The second detection mechanism 12 is the same as the first detection mechanism 4. Both the first detection mechanism 4 and the second detection mechanism 12 are connected to the alarm 42 through wiring. The alarm 42 is fixedly connected to the warning support frame 3. The first detection mechanism 4 can monitor and detect the collected and transmitted airflow and transmit it to the alarm 42 through an electrical signal.

[0028] The second detection mechanism 12 is snapped into the warning support frame 3. The end of the cover plate 8 away from the electric telescopic rod 9 is slidably connected to the fitting rubber plate 13. The cover plate 8 is semi-circular in shape. The surface of the cover plate 8 is provided with a track groove 81. The groove key 131 is slidably connected to the track groove 81. By setting the track groove 81, the inner fitting rubber plate 13 of the cover plate 8 can be slidably adjusted to prevent the fitting rubber plate 13 from overlapping with the gap of the cover plate 8 and failing to achieve a sealing effect.

[0029] The interface 11 consists of a connecting plate and a pipe. The connecting plate is fixedly connected to the sealing edge 10. The pipe of the interface 11 passes through the sealing edge 10 and communicates with the second detection mechanism 12. The interface 11 enables the rubber disc 13 to communicate with the second detection mechanism 12, so that the rubber disc 13 can be rotated and communicate with the second detection mechanism 12 at a predetermined position.

[0030] The sealing edge 10 is annular in shape and has a conical outer surface. The sealing edge 10 wraps around the outer side of the rubber disc 13, allowing it to fit against the detection plane and increasing the sealing performance of the detection position of the device.

[0031] The rubber disc 13 is connected to the interface 11. The rubber disc 13 is composed of two semi-circular rings and is circular in shape. A sliding key 131 is provided on the side of the rubber disc 13 near the cover plate 8, and a blocking wall 132 is provided on the side of the rubber disc 13 away from the cover plate 8. A chamfer is provided at the center of the side of the rubber disc 13 away from the cover plate 8. A small hole is provided on the side of the rubber disc 13 and is connected to the interface 11. The rubber disc 13 can fit against the plane and can collect the gas leaking at the connection between the round tube and the plane by using the chamfer, so that the gas can be collected and transmitted to the second detection mechanism 12.

[0032] Working principle: When in use, the positioning shell 1 is first fixed to the surface of the round tube with screws, and the sealing ring 2 is attached to the outer surface of the round tube. The raised sealing strip on the surface of the sealing ring 2 adheres to the round tube under the pressure of the positioning shell 1. If the round tube is tested for leakage, the sealing ring 2 adheres to the surface of the round tube. After the round tube leaks, the gas enters the connecting tube of the first detection mechanism along the sealing strip of the sealing ring 2. The airflow detector 41 reacts to the airflow and at the same time, the airflow detector 41 drives the alarm 42 to issue a leakage warning.

[0033] When performing a leak detection at the connection point of the round pipe, the positioning shell 1 is fixed on the outside of the round pipe. Then, the rubber disc 13 is rotated inside the cover disc 8 so that the rubber disc 13 covers the gap between the upper and lower cover discs 8. The cover disc 8 is pushed away from the force ring 5 by activating the electric telescopic rod 9, so that the cover disc 8, carrying the moving sleeve 7, slides along the surface of the guide rod 6, bringing the rubber disc 13 close to the plane of the pipe connection. The blocking wall 132 is then attached to the plane. If there is a leak at the connection point between the pipe and the plane, the gas enters the inside of the blocking wall 132 along the chamfer of the rubber disc 13. The gas enters the second detection mechanism 12 along the groove of the rubber disc 13. The second detection mechanism 12 reacts to the airflow, and at the same time, the airflow detector 41 drives the alarm 42 to issue a leak warning.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas chromatograph leak detection mechanism, comprising a positioning shell (1), characterized in that: A sealing ring (2) is fixedly connected to the inner side of the positioning shell (1), and a warning support frame (3) is fixedly connected to the outer side of the positioning shell (1). A first detection mechanism (4) is snapped onto the surface of the warning support frame (3). The first detection mechanism (4) passes through the positioning shell (1) and communicates with the sealing ring (2). A force-bearing ring (5) is fixedly connected to the end face of the positioning shell (1). A guide rod (6) is fixedly connected to the surface of the force-bearing ring (5). A movable sleeve (7) is slidably connected to the surface of the guide rod (6). A cover plate (8) is fixedly connected to the outer surface of the movable sleeve (7). The surface of the force-bearing ring (5) is... An electric telescopic rod (9) is fixedly connected to the surface of the cover plate (8). The free end of the electric telescopic rod (9) is fixedly connected to the cover plate (8). A sealing edge (10) is fixedly connected to the surface of the cover plate (8). A mating interface (11) is fixedly connected to the surface of the cover plate (8). The mating interface (11) is connected to the second detection mechanism (12) through a hose. The second detection mechanism (12) is snapped into the warning support frame (3). A rubber mat (13) is slidably connected to the end of the cover plate (8) away from the electric telescopic rod (9). The rubber mat (13) is connected to the mating interface (11).

2. The gas chromatograph leak detection mechanism according to claim 1, characterized in that: The bonding rubber disc (13) is composed of two semi-circular rings. The bonding rubber disc (13) is circular in shape. A sliding key (131) is provided on the side of the bonding rubber disc (13) close to the cover disc (8). A blocking wall (132) is provided on the side of the bonding rubber disc (13) away from the cover disc (8). A chamfer is provided at the center of the side of the bonding rubber disc (13) away from the cover disc (8). A small hole is provided on the side of the bonding rubber disc (13) and communicates with the interface (11).

3. The gas chromatograph leak detection mechanism according to claim 1, characterized in that: The sealing ring (2) is located inside the positioning shell (1). The positioning shell (1) consists of two parts connected by screws. The sealing ring (2) has an annular protruding sealing strip inside.

4. The gas chromatograph leak detection mechanism according to claim 1, characterized in that: The first detection mechanism (4) consists of a connecting pipe and an airflow detector (41). The second detection mechanism (12) is the same as the first detection mechanism (4). Both the first detection mechanism (4) and the second detection mechanism (12) are connected to the alarm (42) via lines. The alarm (42) is fixedly connected to the alarm support frame (3).

5. A gas chromatograph leak detection mechanism according to claim 2, characterized in that: The cover plate (8) is semi-circular in shape, and a track groove (81) is provided on the surface of the cover plate (8). The track key (131) is slidably connected to the track groove (81).

6. A gas chromatograph leak detection mechanism according to claim 1, characterized in that: The interface (11) consists of a connecting plate and a pipe. The connecting plate is fixedly connected to the sealing edge (10). The pipe of the interface (11) passes through the sealing edge (10) and is connected to the second detection mechanism (12).

7. A gas chromatograph leak detection mechanism according to claim 1, characterized in that: The sealing edge (10) is annular in shape, and the outer surface of the sealing edge (10) is conical. The sealing edge (10) wraps around the outside of the rubber disc (13).

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