Portable gas chromatograph for gas in transformer oil

Abstract

The invention provides a portable gas chromatograph for gas in transformer oil, belongs to the technical field of detection equipment, and aims to solve the problems that existing equipment is easy to loosen in connection, and heat dissipation and dust prevention are difficult to take into account at the same time. The chromatographic instrument comprises a chromatographic instrument body, a wire inserting seat and a connecting joint, an adjusting buffer assembly, an anti-falling assembly and a self-adaptive heat dissipation assembly are additionally arranged, and the adjusting buffer assembly converts the dead weight of the instrument into hydraulic force through a floating movable column and a liquid storage cavity; the hydraulic force synchronously drives a locking pin in the anti-disengaging assembly to be inserted into a clamping groove of the connector to achieve locking and drives louver blades in the self-adaptive heat dissipation assembly to rotate so as to open a heat dissipation air channel. When the instrument is lifted up, each component automatically resets, is unlocked and closes the air duct, the operation of'locking when being placed and unlocking when being lifted up 'is realized, the connection reliability, the equipment protection property and the operation convenience of field detection are ensured, and the device is particularly suitable for a complex electric power industry field.

Description

Technical Field

[0001] This invention relates to the field of detection equipment technology, and more specifically, to a portable gas chromatograph for detecting gases in transformer oil. Background Technology

[0002] In the routine maintenance and fault diagnosis of power systems, analyzing dissolved gases in transformer oil is a crucial means of detecting latent faults and preventing major accidents. Portable gas chromatographs play an irreplaceable role in this field due to their ability to be moved to the site for rapid detection.

[0003] Currently, most portable gas chromatographs on the market use simple plug-in interfaces to connect their external data cables or power cables to the instrument itself. However, in complex field environments such as substations and outdoor locations, the instruments are easily moved or accidentally touched during placement and operation. Existing connection methods lack effective anti-detachment mechanisms, leading to frequent loosening or even complete disconnection of the connection cables, causing interruption of detection signals and data loss. In severe cases, this may delay fault detection and threaten the safe and stable operation of the power grid. In addition, the instruments need to be dustproof during transportation and require efficient heat dissipation during operation. Traditional fixed heat dissipation hole designs cannot meet both of these requirements and often require compromises between protection and heat dissipation.

[0004] How to invent a portable gas chromatograph for gases in transformer oil to solve these problems has become an urgent issue for those skilled in the art. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a portable gas chromatograph for gas in transformer oil, which aims to solve the problems mentioned in the background.

[0006] This invention is implemented as follows:

[0007] This invention provides a portable gas chromatograph for transformer oil, comprising a chromatograph body, a socket disposed on the chromatograph body, and a connection connector that mates with the socket, and further comprising:

[0008] An adjustable buffer assembly, located at the bottom of the chromatograph body, is used to convert the weight of the chromatograph body into internal hydraulic pressure when it is placed.

[0009] An anti-detachment component is installed on the chromatograph body and the connecting connector, and is connected to the regulating buffer component, for locking or releasing the connecting connector under the hydraulic pressure.

[0010] An adaptive heat dissipation component is located below the chromatographic module within the chromatograph body and is connected to the adjustment buffer component. It is used to open or close the heat dissipation channel under the drive of the liquid pressure.

[0011] Preferably, the adjustment buffer assembly includes an installation cavity, a connecting cavity, and a fixed cylinder fixedly connected to the bottom of the chromatograph body. The fixed cylinder is correspondingly arranged with the installation cavity. A connecting plate is slidably arranged inside the connecting cavity. An elastic element is fixedly connected to the top of the installation cavity. The top wall of the connecting plate is fixedly connected to one end of the elastic element. A movable column is fixedly connected to the bottom of the connecting plate.

[0012] Preferably, the mounting cavity and the connecting cavity are connected.

[0013] Preferably, the movable column is slidably disposed within the corresponding fixed cylinder, and the bottom of the movable column is threadedly connected to an adjustable base with adjustable height.

[0014] Preferably, the anti-detachment component includes a limiting sleeve, a mounting bracket, and a liquid guiding cavity. The mounting bracket is fixedly installed inside the connecting cavity, and the connecting plate is slidably sleeved on the outside of the mounting bracket. The mounting cavity, connecting cavity, mounting bracket, and connecting plate together form a sealed liquid storage cavity. The chromatograph body also has a liquid guiding cavity, and a liquid guiding pipe is provided between the liquid storage cavity and the liquid guiding cavity. A wedge-shaped slider two is slidably connected inside the liquid guiding cavity, and the wedge-shaped slider two is elastically connected to the liquid guiding cavity through an elastic element three.

[0015] Preferably, the limiting sleeve is coaxially sleeved on the outside of the socket. The limiting sleeve is provided with a limiting cavity, and a limiting block is provided at the bottom of the limiting cavity. A connecting rod is slidably connected inside the limiting cavity. A wedge-shaped slider is fixedly connected to the top of the connecting rod. The wedge-shaped slider is elastically connected to the limiting cavity through an elastic element. A limiting groove adapted to the limiting block is opened on the side wall of the connecting rod. The wedge-shaped slider is engaged with the inclined surface of the wedge-shaped slider.

[0016] Preferably, the connector is provided with an annular groove; when the connector is inserted into the socket, the position of the annular groove corresponds to the position of the connecting rod, and the diameter of the connecting rod matches the width of the annular groove; wherein, when the hydraulic pressure in the liquid storage chamber increases, it pushes the second wedge slider to move, and through the inclined surface cooperation, drives the first wedge slider and the connecting rod to move downward and insert into the annular groove; when the chromatograph body is placed horizontally, the connecting rod is inserted into the annular groove under hydraulic drive; when the chromatograph body is lifted, the connecting rod disengages from the annular groove under the action of the second elastic element.

[0017] Preferably, the side wall of the connecting plate is provided with an injection port for injecting hydraulic medium, and the connecting plate is sealed to the mounting bracket.

[0018] Preferably, the adaptive heat dissipation assembly includes: a plurality of blades rotatably mounted on the mounting bracket; a rack fixed to the top of the connecting plate; and a gear fixedly connected to the rotating shaft of one of the blades and meshing with the rack; wherein the up-and-down movement of the connecting plate drives the blades to rotate through the meshing of the rack and the gear; and sprockets are fixedly connected to the ends of the rotating shafts of the plurality of blades, and the plurality of sprockets on the same side are synchronously connected by a chain.

[0019] Preferably, when the chromatograph body is placed horizontally, the blades rotate to open; when the chromatograph body is lifted, the blades rotate to close to block the heat dissipation channel.

[0020] The beneficial effects of this invention are:

[0021] 1. This invention achieves an inherently safe logic of "locking upon placement and unlocking upon lifting" through a mechanical-hydraulic linkage mechanism. When the instrument is stably placed on the table, its own weight automatically triggers the locking mechanism, physically locking the connection joint. This fundamentally prevents accidental detachment due to vibration, impact, or pulling, ensuring absolute continuity and reliability of data connection during on-site testing. Users only need to perform two actions: placing the equipment and inserting the joint. The system can automatically and synchronously complete two key preparatory tasks: connection locking and heat dissipation activation. This simplifies the operation process, eliminates the need for users to remember additional locking steps, reduces the possibility of misoperation, and greatly improves the intelligence level of the equipment and the user experience.

[0022] 2. The instrument adopts a floating movable column and integrated hydraulic system design, which makes it highly adaptable to slightly uneven work surfaces. It can automatically balance pressure and ensure reliable triggering of linkage functions. At the same time, the adaptive heat dissipation component automatically opens the air duct for efficient heat dissipation when the instrument is working, and completely closes during transportation and storage, forming a sealed protection of the same level as the machine body. This effectively resists the intrusion of dust, oil and moisture in the field, significantly improving the durability and long-term reliability of the equipment in harsh industrial environments. The entire system is based on pure mechanical and hydraulic principles, without any electronic sensors or electric actuators. This makes the system resistant to strong electromagnetic interference, has a long service life and requires almost no maintenance, meeting the stringent stability requirements of power testing equipment and reducing the total life cycle cost. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the mounting cavity of the present invention;

[0026] Figure 3 This is the invention Figure 2 Enlarged structural diagram at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the chromatograph body when the present invention is lifted;

[0028] Figure 5 This is the invention Figure 4 Enlarged structural diagram at point B;

[0029] Figure 6 This is a schematic diagram of the cross-sectional structure of the chromatograph body when it is placed horizontally according to the present invention;

[0030] Figure 7 This is the invention Figure 6 Enlarged structural diagram at point C;

[0031] Figure 8 This is a schematic diagram of the adaptive heat dissipation component structure of the present invention;

[0032] Figure 9 This is the invention Figure 8 Enlarged structural diagram at point D;

[0033] Figure 10 This is a schematic diagram of the partial explosion structure of the present invention;

[0034] Figure 11 This is a schematic diagram of the blades, sprockets, and chain of the present invention;

[0035] Figure 12 This is a schematic diagram of the structure of the limiting sleeve and wedge-shaped slider of the present invention.

[0036] In the diagram: 1. Chromatograph body; 2. Connecting connector; 3. Blade; 4. Fixing cylinder; 5. Limiting sleeve; 6. Mounting bracket; 7. Rack; 8. Liquid storage chamber; 11. Mounting chamber; 12. Connecting chamber; 21. Annular groove; 31. Sprocket; 32. Chain; 41. Moving column; 42. Connecting plate; 43. Elastic element one; 51. Limiting chamber; 52. Elastic element two; 53. Connecting rod; 54. Wedge slider one; 71. Gear; 81. Liquid guiding line; 82. Liquid guiding chamber; 83. Wedge slider two; 411. Adjusting base; 421. Injection port; 511. Limiting block; 531. Limiting groove; 831. Elastic element three. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1, refer to Figures 1-12 A portable gas chromatograph for transformer oil includes a chromatograph body 1, a socket disposed on the chromatograph body 1, and a connection connector 2 that mates with the socket, and further includes:

[0039] An adjustment buffer assembly is located at the bottom of the chromatograph body 1 and is used to convert the weight of the chromatograph body 1 into internal hydraulic pressure when it is placed.

[0040] An anti-detachment component is installed on the chromatograph body 1 and the connecting connector 2, and is connected to the regulating buffer component. It is used to lock or release the connecting connector 2 under hydraulic pressure.

[0041] An adaptive heat dissipation component is located below the chromatographic module inside the chromatograph body 1 and is connected to the adjustment buffer component. It is used to open or close the heat dissipation channel under hydraulic pressure.

[0042] Furthermore, the adjustment buffer assembly includes an installation cavity 11 and a connecting cavity 12 opened at the bottom of the chromatograph body 1, and a fixed cylinder 4 fixedly connected to the bottom of the chromatograph body 1. The fixed cylinder 4 is correspondingly arranged with the installation cavity 11. A connecting plate 42 is slidably arranged inside the connecting cavity 12. An elastic element 43 (a compression spring can be selected, and the same applies to the elastic elements mentioned below) is fixedly connected to the top of the installation cavity 11. This provides a restoring force when the equipment is lifted, driving the connecting plate 42, the movable column 41, and the entire system back to their original position. It also provides buffering and limiting when the equipment is placed, preventing the impact of gravity from being directly and rigidly transmitted to the hydraulic system and the anti-detachment assembly, thus protecting the precision components. The top wall of the connecting plate 42 is fixedly connected to one end of the elastic element 43, and the bottom of the connecting plate 42 is fixedly connected to the movable column 41. The connecting plate 42 is fixed to the top of all the movable columns 41, thereby converging the dispersed displacement of the four support points into a unified, overall upward displacement. This design ensures that even if the equipment is placed on a slightly uneven surface, it can be automatically balanced by the internal structure, ultimately outputting a unified action signal.

[0043] It should be noted that the mounting cavity 11 and the connecting cavity 12 are connected; the movable column 41 is slidably disposed in the corresponding fixed cylinder 4. The movable column 41 slides in the fixed cylinder 4, forming a floating support leg at the bottom of the equipment. Its function is to directly bear the weight of the equipment and convert it into an upward linear displacement. The fixed cylinder 4 provides rigid guidance to ensure that the movable column 41 moves smoothly and does not deviate.

[0044] Furthermore, the anti-detachment component includes a limiting sleeve 5, a mounting bracket 6, and a liquid guiding cavity 82. The mounting bracket 6 is fixedly installed inside the connecting cavity 12, and the connecting plate 42 is slidably sleeved on the outside of the mounting bracket 6. The mounting cavity 11, the connecting cavity 12, the mounting bracket 6, and the connecting plate 42 together form a sealed liquid storage cavity 8. The chromatograph body 1 also has a liquid guiding cavity 82, which is filled with hydraulic oil (or other incompressible fluid). When the connecting plate 42 moves upward, it compresses the volume of the liquid storage cavity 8, thereby establishing hydraulic pressure. A liquid guiding tube is provided between the liquid storage cavity 8 and the liquid guiding cavity 82. Inside the fluid guide cavity 82, there is a sliding connection of a wedge-shaped slider 83. The wedge-shaped slider 83 and the fluid guide cavity 82 are elastically connected by an elastic element 831. The fluid guide 81 and the fluid guide cavity 82 form a hydraulic transmission channel, which transmits the pressure of the fluid storage cavity 8 to the locking position far away from the gravity input point. The wedge-shaped slider 83 acts as a hydraulic piston, directly sensing the hydraulic pressure. The elastic element 831 (which can be a spring) provides a restoring force for it. Its inclined surface design converts the linear motion of the wedge-shaped slider 83 into the axial motion of the connecting rod 53.

[0045] The limiting sleeve 5 is coaxially sleeved on the outside of the socket. The limiting sleeve 5 has a limiting cavity 51, and a limiting block 511 is located at the bottom of the limiting cavity 51. A connecting rod 53 is slidably connected inside the limiting cavity 51, and a wedge-shaped slider 54 is fixedly connected to the top of the connecting rod 53. The wedge-shaped slider 54 and the limiting cavity 51 are elastically connected by an elastic element 52. The elastic element 52 provides the axial restoring force of the connecting rod 53, allowing it to quickly pull the connecting rod 53 back when the hydraulic pressure disappears. In addition to locking, the side wall of the connecting rod 53 is provided with a limiting groove 531 that matches the limiting block 511. This mating structure limits the sliding stroke of the connecting rod 53, preventing it from overextending or retracting, ensuring accurate locking position, and preventing parts from disengaging. The wedge slider 2 83 is connected to the inclined surface of the wedge slider 1 54. The connecting rod 53 acts as a locking pin, and its end directly performs the locking action. The inclined surface of the wedge slider 1 54 and the wedge slider 2 83 are engaged to realize the transmission of motion and the amplification of force.

[0046] It should be noted that the connecting connector 2 is provided with an annular groove 21, which provides a clear engagement position for the connecting rod 53, realizing a form lock, and its reliability is far higher than that of locking methods relying on friction. When the connecting connector 2 is inserted into the socket, the position of the annular groove 21 corresponds to the position of the connecting rod 53, and the diameter of the connecting rod 53 matches the groove width of the annular groove 21. When the hydraulic pressure in the liquid storage chamber 8 increases, it pushes the second wedge slider 83 to move, and through the inclined surface cooperation, drives the first wedge slider 54 and the connecting rod 53 to move downward and insert into the annular groove 21. When the chromatograph body 1 is placed horizontally, the connecting rod 53 is inserted into the annular groove 21 under hydraulic drive. When the chromatograph body 1 is lifted, the connecting rod 53 disengages from the annular groove 21 under the action of the second elastic element 52.

[0047] It should be noted that the inclined contact surfaces of wedge slider 283 and wedge slider 154 are treated with surface hardening (such as carburizing and quenching or spraying wear-resistant coating), and a small amount of grease reservoir is reserved between their mating surfaces to reduce wear.

[0048] Furthermore, the side wall of the connecting plate 42 is provided with an injection port 421 for injecting hydraulic medium, which is used to fill and replenish hydraulic medium, and can remove air during debugging to ensure the sensitivity and consistency of hydraulic transmission. The connecting plate 42 is sealed to the mounting bracket 6.

[0049] In this embodiment, the hydraulic medium filled in the storage chamber 8 and the guide pipe 81 should preferably be low-viscosity, high-chemical-stability silicone oil or special hydraulic oil, with an operating temperature range of -10℃ to 60℃ to adapt to complex environments such as outdoor substations. All sealing surfaces, such as between the connecting plate 42 and the mounting bracket 6, and at the interface of the guide pipe 81, are made of O-ring seals, which can be made of fluororubber or nitrile rubber for static sealing. Key sliding parts, such as between the wedge slider 83 and the guide chamber 82, are provided with wear-resistant sealing rings to ensure no leakage during long-term use. The injection port 421 is designed as a closed structure with a threaded sealing cap and has a built-in one-way valve, which is only opened when replenishing or replacing the hydraulic medium. No maintenance is required during daily use. The system status can be judged by observing whether the connecting plate 42 resets smoothly and whether the locking action is timely. If necessary, the hydraulic medium can be replenished through the injection port 421. This hydraulic system is a closed, passive system without pressure storage components. Even if extreme leakage occurs, it will only cause the locking function to fail, while the heat dissipation function will still exist. There will be no safety risk, and the instrument can still be used normally.

[0050] Furthermore, referring to Figures 4-11The adaptive heat dissipation component includes: multiple blades 3 rotatably mounted on the mounting bracket 6; a rack 7 fixed to the top of the connecting plate 42; and a gear 71 fixedly connected to the rotating shaft of one of the blades 3 and meshing with the rack 7. The rack 7 is fixed on the moving connecting plate 42, directly converting the displacement caused by gravity into the rotation of the gear 71. The up-and-down movement of the connecting plate 42 drives the blades 3 to rotate through the meshing of the rack 7 and the gear 71. The rotating shaft ends of multiple blades 3 are all fixedly connected to sprockets 31. Multiple sprockets 31 on the same side are synchronously connected through a chain 32 to ensure that all blades 3 achieve completely synchronous and equal-angle rotation under a single power input (one gear 71), avoiding jamming or poor sealing caused by asynchrony, ensuring that the opening and closing of the heat dissipation vents is neat and reliable, and that the airflow resistance is uniform.

[0051] It should be noted that all blades 3 are supported by sealed bearings at both ends of the rotating shaft, and a removable dust cover is installed on the outside of the chain 32 to prevent dust and oil from entering and causing jamming. The chain 32 is made of stainless steel and coated with a solid lubricant coating, eliminating the need for regular lubrication and reducing maintenance requirements. When the blades 3 are fully closed, their edges are equipped with soft sealing strips (such as silicone) that form a tight fit with the housing, achieving a dustproof rating of IP54, effectively blocking dust and splashes on site. When the blades 3 are closed, their surface and the top of the instrument base form a flat shell without protrusions, facilitating cleaning and handling. A replaceable dust filter (such as a snap-on or sliding type, made of PET or non-woven fabric) can be installed on the inside of the blades 3 to prevent larger dust particles from entering the instrument during ventilation, further extending the life of internal components.

[0052] It should be noted that when the chromatograph body 1 is placed horizontally, the blades 3 rotate to open; when the chromatograph body 1 is lifted, the blades 3 rotate to close, sealing the heat dissipation channel; when the gear 71 is driven by the rack 7, the sprocket 31, which is coaxially fixed with it, rotates accordingly, transmitting power to the sprockets 31 on the shafts of all other blades 3 through the closed chain 32, thereby achieving synchronous rotation of all blades 3 and forming a louvered damper. When open, the louvered damper can form a large-area, low-resistance ventilation channel, which, together with the internal fan of the equipment, can achieve efficient heat dissipation of the chromatographic column and circuit modules, preventing the instrument from leaking heat. If the instrument experiences performance drift or damage due to overheating, the blades 3, when opened, together with the bottom housing and internal partitions, form a U-shaped cooling airflow channel that draws air in from the side or rear of the instrument, flows through the chromatography module, and then exits from the gaps between the bottom blades. During transportation and storage, the blades 3 are completely closed, providing dust and splash protection to the bottom of the equipment equivalent to the IP rating of the housing. This is something that ordinary perforated cooling mesh cannot achieve, significantly improving the long-term reliability of the equipment in harsh industrial environments. Its synchronization mechanism ensures smooth, shock-free operation and eliminates the motor noise common in electronic dampers, enhancing the overall quality of the product.

[0053] Furthermore, the stiffness of the elastic connector 43 has been verified through simulation and actual measurement. Its pre-pressure setting ensures that the instrument will not trigger a reset when subjected to a vertical upward force of less than 5N (such as a slight touch or vibration). The return stroke will only be initiated when the instrument is fully lifted (its own weight is completely unloaded), thus avoiding misoperation.

[0054] It should be noted that if the connector 2 is not inserted into the socket, the hydraulic system will still push the connecting rod 53 downward, but its stroke will be limited by the cooperation of the limit block 511 and the limit groove 531. The connecting rod 53 will only extend to the ready position and will not cause empty collision or damage. When the connector is inserted, the connecting rod 53 will automatically slide into the annular groove 21 to complete the locking.

[0055] In this embodiment, the operator places the equipment on the maintenance platform next to the transformer. The weight of the equipment is transmitted through the movable column 41, overcoming the elastic force of the elastic element 43, and pushing the connecting plate 42 upward. The upward movement of the connecting plate 42 compresses the liquid storage chamber 8, and the hydraulic pressure inside the chamber increases. The pressure is transmitted to the liquid guiding chamber 82 through the liquid guiding pipe 81. In the liquid guiding chamber 82, the increased hydraulic pressure pushes the second wedge slider 83 to move horizontally. The inclined surface of the second wedge slider 83 cooperates with the inclined surface of the first wedge slider 54, converting the horizontal thrust into the force that pushes the connecting rod 53 downward, overcoming the tension of the second elastic element 52. The connecting rod 53 moves downward, and its end is inserted into the annular groove 21 of the pre-inserted connecting joint 2, completing the mechanical hard locking.

[0056] At the same time, the connecting plate 42 moves upward, causing the rack 7 to move upward, which in turn drives the gear 71 that meshes with it to rotate. The gear 71 drives all the blades 3 to rotate synchronously by about 90 degrees through the sprocket 31 and the chain 32, so that the originally closed bottom heat dissipation louvers are fully opened, forming a heat dissipation air duct.

[0057] After the operator completes the inspection, he lifts the equipment with both hands. The equipment unloads itself due to its own weight, and the elastic element 43 rebounds, pulling the connecting plate 42 downward. The volume of the liquid storage chamber 8 is restored, and the internal hydraulic pressure drops rapidly. Inside the liquid guiding chamber 82, the elastic element 831 pushes the wedge slider 83 to reset. Inside the limit sleeve 5, the elastic element 52 pushes the connecting rod 53 upward to reset, causing it to exit from the annular groove 21. The connecting joint 2 can then be freely removed.

[0058] At the same time, the connecting plate 42 moves down, causing the rack 7 to move down, driving the gear 71 and the entire sprocket-chain mechanism to move in the opposite direction, so that all the blades 3 rotate synchronously and close, resealing the bottom of the equipment to prevent dust and oil from entering during movement and storage.

[0059] This instrument has three main states: transport and storage state, working preparation state, and working locked state. In the transport and storage state, the instrument is lifted, the blades 3 close, the connecting rod 53 retracts, and all elastic elements reset. In the working preparation state, the instrument is placed on the table, the movable column 41 is pressed upward, the hydraulic system builds up pressure, the blades 3 begin to open, and the connecting rod 53 begins to move downward. In the working locked state, the hydraulic pressure reaches the set value, the connecting rod 53 is fully inserted into the connector slot, the blades 3 are fully open, and the heat dissipation air duct is unobstructed. The transition between states is completely controlled automatically by the instrument's own weight and the hydraulic system, without the need for user intervention.

[0060] This embodiment achieves a "lock upon placement, unlock upon lifting" physical logic through mechanical-hydraulic linkage. As long as the equipment is in operation (placed on a platform), the data connection is forcibly locked, fundamentally eliminating signal interruptions caused by vibration or impact, and greatly improving the reliability of data from field and on-site testing. A single gravity input automatically and synchronously triggers two key functions: electrical connection safety and equipment heat dissipation management, simplifying operation (users do not need to remember additional actions) and enhancing the equipment's intelligence and user experience. The floating feet and integrated pressure plate design give the equipment excellent adaptability to uneven surfaces, and the internal hydraulic system automatically balances pressure differences, ensuring reliable triggering of all linkage functions under any stable placement condition. All linkage mechanisms are built into the equipment body, with no exposed complex parts. The purely mechanical structure avoids the use of electronic sensors, making it resistant to electromagnetic interference, resistant to environmental temperature and humidity changes, long-lasting, and requiring low maintenance, making it particularly suitable for use in complex power industry sites.

[0061] Example 2, refer to Figures 2-3 The bottom of the movable column 41 is threaded with an adjustable base 411 that can adjust the height. By rotating the adjustable base 411, the effective length of each support leg can be finely adjusted.

[0062] It should be noted that the outer surface of the adjustment base 411 is provided with anti-slip texture, which is convenient for manual rotation and adjustment. The upper part of its threaded section is provided with a locking nut (not shown in the figure). After adjustment, the locking nut can be tightened to prevent height changes due to vibration during operation. On obviously uneven surfaces, users can adjust the four adjustment bases 411 in sequence to center the bubble of the built-in level at the top of the instrument, which can quickly achieve instrument leveling and ensure the accuracy of chromatographic analysis.

[0063] In this embodiment, when the device is placed on a significantly tilted plane, the operator can manually rotate the adjusting base 411 on the lower support leg to extend it until the device body returns to a roughly horizontal state before performing the detection operation. The chromatographic column inside the gas chromatograph is sensitive to horizontal orientation. Maintaining the device level helps maintain a stable carrier gas flow path, which is an important prerequisite for ensuring gas separation effect and quantitative analysis accuracy. This design provides the ability to quickly level the device on-site, enabling the device to operate reliably in more demanding on-site environments (such as transformer top covers and slopes), thus broadening its application scenarios.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A portable gas chromatograph for transformer oil, comprising a chromatograph body (1), a socket disposed on the chromatograph body (1), and a connecting connector (2) cooperating with the socket, characterized in that, Also includes: An adjustment buffer assembly is located at the bottom of the chromatograph body (1) to convert its own weight into internal hydraulic pressure when the chromatograph body (1) is placed. An anti-detachment component is installed on the chromatograph body (1) and the connecting connector (2) and is connected to the regulating buffer component. It is used to lock or release the connecting connector (2) under the hydraulic pressure. An adaptive heat dissipation component is located below the chromatographic module inside the chromatograph body (1) and is connected to the adjustment buffer component, for opening or closing the heat dissipation channel under the hydraulic pressure.

2. The portable gas chromatograph for transformer oil according to claim 1, characterized in that, The regulating buffer assembly includes an installation cavity (11) and a connecting cavity (12) opened at the bottom of the chromatograph body (1), and a fixed cylinder (4) fixedly connected to the bottom of the chromatograph body (1). The fixed cylinder (4) is arranged correspondingly to the installation cavity (11). A connecting plate (42) is slidably arranged inside the connecting cavity (12). An elastic element (43) is fixedly connected to the top of the installation cavity (11). The top wall of the connecting plate (42) is fixedly connected to one end of the elastic element (43). A movable column (41) is fixedly connected to the bottom of the connecting plate (42).

3. The portable gas chromatograph for transformer oil according to claim 2, characterized in that, The mounting cavity (11) and the connecting cavity (12) are connected.

4. The portable gas chromatograph for transformer oil according to claim 2, characterized in that, The movable column (41) is slidably disposed in the corresponding fixed cylinder (4), and the bottom of the movable column (41) is threadedly connected to an adjustable base (411) with adjustable height.

5. A portable gas chromatograph for transducer oil according to claim 2, characterized in that, The anti-detachment component includes a limiting sleeve (5), a mounting bracket (6), and a liquid guiding cavity (82). The mounting bracket (6) is fixedly installed in the connecting cavity (12). The connecting plate (42) is slidably sleeved on the outside of the mounting bracket (6). The mounting cavity (11), the connecting cavity (12), the mounting bracket (6), and the connecting plate (42) together form a sealed liquid storage cavity (8). The chromatograph body (1) also has a liquid guiding cavity (82). A liquid guiding pipe (81) is provided between the liquid storage cavity (8) and the liquid guiding cavity (82). A wedge-shaped slider (83) is slidably connected inside the liquid guiding cavity (82). The wedge-shaped slider (83) and the liquid guiding cavity (82) are elastically connected by an elastic element (831).

6. A portable gas chromatograph for transducer oil according to claim 5, characterized in that, The limiting sleeve (5) is coaxially sleeved on the outside of the socket. The limiting sleeve (5) is provided with a limiting cavity (51). The bottom of the limiting cavity (51) is provided with a limiting block (511). A connecting rod (53) is slidably connected inside the limiting cavity (51). A wedge-shaped slider (54) is fixedly connected to the top of the connecting rod (53). The wedge-shaped slider (54) and the limiting cavity (51) are elastically connected by an elastic element (52). The side wall of the connecting rod (53) is provided with a limiting groove (531) that matches the limiting block (511). The wedge-shaped slider (83) and the inclined surface of the wedge-shaped slider (54) are connected.

7. A portable gas chromatograph for transformer oil according to claim 6, characterized in that, The connector (2) is provided with an annular groove (21); when the connector (2) is inserted into the socket, the position of the annular groove (21) corresponds to the position of the connecting rod (53), and the diameter of the connecting rod (53) matches the groove width of the annular groove (21); When the hydraulic pressure in the reservoir (8) increases, it pushes the second wedge slider (83) to move, and drives the first wedge slider (54) and the connecting rod (53) to move downward and insert into the annular groove (21) through the inclined surface cooperation; when the chromatograph body (1) is placed horizontally, the connecting rod (53) is inserted into the annular groove (21) under hydraulic drive; when the chromatograph body (1) is lifted, the connecting rod (53) is disengaged from the annular groove (21) under the action of the second elastic element (52).

8. A portable gas chromatograph for transducer oil according to claim 5, characterized in that, The side wall of the connecting plate (42) is provided with an injection port (421) for injecting hydraulic medium, and the connecting plate (42) is sealed to the mounting bracket (6).

9. A portable gas chromatograph for gas in transformer oil according to claim 5, characterized in that, The adaptive heat dissipation component includes: Rotate multiple blades (3) mounted on the mounting frame (6); A rack (7) fixed to the top of the connecting plate (42); A gear (71) fixedly connected to the shaft of one of the blades (3) and meshing with the rack (7); The up-and-down movement of the connecting plate (42) is driven by the meshing of the rack (7) and the gear (71) to rotate the blade (3); the shaft ends of the multiple blades (3) are all fixedly connected to sprockets (31), and the multiple sprockets (31) on the same side are synchronously connected by chains (32).

10. A portable gas chromatograph for transformer oil according to claim 9, characterized in that, When the chromatograph body (1) is placed horizontally, the blade (3) rotates to open; when the chromatograph body (1) is lifted, the blade (3) rotates to close to block the heat dissipation channel.

Images