Connecting mechanism and gas sampling and monitoring device

Abstract

The utility model discloses a connecting mechanism and a gas sampling monitoring device, and relates to the field of sampling monitoring of gas dissolved in transformer oil, the connecting mechanism comprises an adjusting assembly, the adjusting assembly comprises a connecting column and a connecting hole located in one side of the connecting column, a mounting groove is formed in the connecting column, a fixing piece is rotatably connected in the mounting groove, and the connecting hole is located in the fixing piece. A connecting ring is arranged on the fixing piece, a connecting piece is arranged on the outer side of the fixing piece, and a closing piece is arranged on one side of the connecting piece. Through linkage matching of the fixing piece and the closing piece, the oil outlet pipe is clamped and fixed when a worker aligns to the oil outlet pipe and the connecting pipe, so that the connecting effect of the connecting pipe and the oil outlet pipe is ensured, the step that the worker lifts a sampling bottle with hands for sampling is omitted, operation is more convenient, and the working efficiency is improved. The leakage of the sampled oil in the sampling process is avoided, the waste of resources is reduced, and meanwhile, the detection result of the gas in the sampled oil of the transformer is more accurate.

Description

Technical Field

[0001] The utility model relates to the field of dissolved gas sampling and monitoring in transformer oil, in particular to a connecting mechanism and a gas sampling and monitoring device. Background Art

[0002] A transformer is a very important device in the power system, which is used to transmit high-voltage electrical energy from a power plant to different places. During the operation of the transformer, various faults and problems may occur. One common problem is insulation aging and damage. Insulation aging will cause the insulation material to fail and leakage to occur, thus endangering personal safety and the normal operation of the power system. To solve this problem, dissolved gas on-line monitoring technology is usually used to detect the gas in the transformer to help identify problems such as insulation aging and damage. This technology can measure the gas content and type in the transformer and provide detailed information about the health status of the transformer. By using this technology, problems such as insulation aging and damage can be detected early, and measures can be taken in time for repair or replacement to ensure the safe and reliable operation of the transformer.

[0003] Before detecting the gas on the inner wall of the transformer, a certain amount of oil needs to be extracted from the transformer for detection. The existing transformer oil sampling device uses a sampling bottle to align with the oil outlet for sampling. This method causes the bottle mouth to be unable to align with the oil outlet hole, and the oil outlet is located at the top on one side of the transformer. When taking oil, the staff needs to hold the sampling bottle by hand all the time. After a long time, the staff's arm will shake and ache, so that the oil outlet hole cannot be ensured to align with the sampling bottle, resulting in oil leakage to the ground and waste. For this reason, a connecting mechanism and a gas sampling and monitoring device are proposed. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract of the specification and the name of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification and the name of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the above and / or problems existing in the prior art, the present utility model is proposed.

[0006] Therefore, the technical problem to be solved by the present utility model is that when sampling oil, it requires the staff to hold it fixed by hand, and it is impossible to ensure the alignment of the oil outlet hole with the sampling bottle, resulting in oil leakage during the sampling process and waste.

[0007] To solve the above technical problems, the present utility model provides the following technical solutions: A connection mechanism includes an adjustment assembly, which includes a connection column and a connection hole located on one side of the connection column. An installation groove is opened inside the connection column, and a fixing member is rotatably connected inside the installation groove. A connection ring is provided on the fixing member, a connecting member is provided on the outer side of the fixing member, and a closing member is provided on one side of the connecting member.

[0008] As a preferred embodiment of the connection mechanism of the present utility model, wherein: the fixing member includes a turntable rotatably arranged in the installation groove, a first limiting groove is annularly opened on the turntable, a first limiting rod is slidably connected in the first limiting groove, a connecting plate is hinged on the turntable, and the other end of the connecting plate is hinged with a clamping plate;

[0009] The connecting plates are arranged in an annular array with respect to the turntable;

[0010] The clamping plate is arranged in a semi-circular shape.

[0011] As a preferred embodiment of the connection mechanism of the present utility model, wherein: an adjustment groove is annularly opened on the connection ring, a second limiting rod is fitted and installed on the connection ring, and the connection ring is hinged with one end of the clamping plate through the second limiting rod.

[0012] As a preferred embodiment of the connection mechanism of the present utility model, wherein: there are two connection rings, a hollow structure is formed between the two connection rings, the two connection rings are connected by a second limiting rod, and a clamping plate is movably connected between the two connection rings.

[0013] As a preferred embodiment of the connection mechanism of the present utility model, wherein: a toothed plate is connected to the turntable, a connecting gear is meshed with the toothed plate, a threaded rod is welded on the connecting gear, a connecting block is threadedly connected to the threaded rod, and a slider is arranged at the bottom of the connecting block.

[0014] As a preferred embodiment of the connection mechanism of the present utility model, wherein: a rack is arranged on the outer side of the connecting block, a full gear is meshed with the rack, a half gear is meshed with the other side of the full gear, and a sealing plate is arranged on the outer side of the half gear.

[0015] As a preferred embodiment of the connection mechanism of the present utility model, wherein: it further includes an adjustment rod, the adjustment rod is arranged on the turntable, a second limiting groove is opened on the connection column, the adjustment rod is slidably connected in the second limiting groove, and a locking member is arranged on the adjustment rod.

[0016] As a preferred embodiment of the connecting mechanism of the present utility model, the following is provided: The locking member includes a sleeve disposed on the adjusting rod, a spring is disposed inside the sleeve, a locking rod is disposed at one end of the spring, a dial is disposed on the locking rod, one end of the locking rod is movably connected to a locking block and penetrates through the locking block, and the locking block is disposed on the connecting column.

[0017] To solve the above technical problems, the present utility model further provides the following technical solution: A gas sampling and monitoring device includes a connecting mechanism as described in any one of the claims; and a detection component including a transformer. An oil outlet pipe is disposed at the top outside of the transformer, the oil outlet pipe is disposed inside the adjusting component, one end of the oil outlet pipe is movably connected to a connecting pipe, one end of the connecting pipe is connected to a detection box, and one end of the connecting pipe extends into the detection box. An oil-gas separator is inserted at the bottom of the connecting pipe, a gas sampling pipe is inserted into one side of the top of the oil-gas separator, a chromatographic detector is connected to the bottom of the gas sampling pipe, and an air delivery pipe is disposed at the bottom of the chromatographic detector;

[0018] A return oil pipe is disposed at the bottom of the oil-gas separator, the end of the air delivery pipe is connected to the return oil pipe, and the end of the return oil pipe is connected to the bottom outside of the transformer.

[0019] As a preferred embodiment of the gas sampling and monitoring device of the present utility model, the following is provided: A semi-permeable membrane is disposed at the central axis position of the oil-gas separator.

[0020] The beneficial effects of the present utility model: Through the linkage cooperation of the fixing member and the closing member, when the staff aligns the oil outlet pipe and the connecting pipe, the oil outlet pipe is clamped and fixed, thereby ensuring the connection effect between the connecting pipe and the oil outlet pipe, eliminating the step of the staff holding the sampling bottle for sampling by hand, making the operation more convenient, avoiding the leakage of the sampling oil during the sampling process, reducing the waste of resources, and at the same time ensuring the more accurate detection result of the gas in the sampling oil of the transformer. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of a connecting mechanism provided by an embodiment of the present utility model;

[0023] Figure 2Schematic diagram of the internal structure of a connection mechanism according to the embodiment provided by the present utility model;

[0024] Figure 3 Partial schematic diagram of a connection mechanism according to the embodiment provided by the present utility model;

[0025] Figure 4 Schematic diagram of the closing member structure of a connection mechanism according to the embodiment provided by the present utility model;

[0026] Figure 5 Overall schematic diagram of a gas sampling and monitoring device according to the embodiment provided by the present utility model;

[0027] Figure 6 Schematic diagram of the internal structure of an oil and gas separator according to the embodiment provided by the present utility model;

[0028] Figure 7 Overall schematic diagram of a connection mechanism and a gas sampling and monitoring device according to the embodiment provided by the present utility model. Detailed implementation manners

[0029] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given in conjunction with the accompanying drawings of the specification.

[0030] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0031] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present utility model, for the sake of convenience of description, the cross-sectional views showing the device structure will be enlarged locally out of the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0032] Furthermore, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it an embodiment that is separate or selectively mutually exclusive with other embodiments.

[0033] Embodiment 1

[0034] Refer to Figures 1-4, which is the first embodiment of the present utility model, and this embodiment provides a connecting mechanism.

[0035] The connecting mechanism includes an adjusting component 100.

[0036] Specifically, the adjusting component 100 includes a connecting column 101 and a connecting hole 102 located on one side of the connecting column 101. By opening the connecting hole 102, it is convenient for the oil outlet pipe to be inserted and connected to the connecting pipe, and at the same time, it is convenient for the connecting column 101 to be connected to the oil outlet pipe. An installation groove 103 is opened inside the connecting column 101. Through the setting of the installation groove 103, it is convenient for the fixing member 104 to be installed and rotated. The fixing member 104 is rotatably connected inside the installation groove 103. Through the setting of the fixing member 104, the oil outlet pipe can be clamped and fixed after the oil outlet pipe is connected to the connecting pipe, saving the time of installing and removing screws, and the operation is more convenient and fast. A connecting ring 105 is provided on the fixing member 104. Through the setting of the connecting ring 105, the components of the fixing member 104 can be effectively limited, so that the fixing member 104 can better clamp the oil outlet pipe. A connecting member 108 is provided on the outer side of the fixing member 104. Through the setting of the connecting member 108, the closing member 109 can be driven to adjust when the fixing member 104 is adjusted. A closing member 109 is provided on one side of the connecting member 108. Through the setting of the closing member 109, one end of the connecting pipe can be opened or closed, avoiding air entering before contacting the oil outlet pipe, thereby ensuring the accuracy of gas detection.

[0037] Preferably, the fixing member 104 includes a turntable 104a rotatably arranged in the installation groove 103. A first limiting groove 104b is annularly opened on the turntable 104a. A first limiting rod 104c is slidably connected in the first limiting groove 104b. Through the cooperation between the first limiting groove 104b and the first limiting rod 104c, the turntable 104a can perform fixed-point rotation inside the installation groove 103. A connecting plate 104d is hinged on the turntable 104a. Through the setting of the connecting plate 104d, the turntable 104a is effectively connected to the clamping plate 104e. When the turntable 104a is rotated, it drives the connecting plate 104d to rotate, and then drives the clamping plate 104e to rotate in the same direction through the connecting plate 104d. The other end of the connecting plate 104d is hinged with the clamping plate 104e, and the connecting plate 104d is annularly arranged around the turntable 104a. Through the semi-circular setting of the clamping plate 104e, it is convenient to better form a circle after rotation to achieve the clamping effect on the connecting pipe.

[0038] Furthermore, an adjustment groove 105a is annularly formed on the connecting ring 105. Through the arrangement of the adjustment groove 105a, when the connecting plate 104d drives the clamping plate 104e to contact the connecting ring 105, it can rotate smoothly without being affected by the connecting ring 105. A second limiting rod 105b is fitted and installed on the connecting ring 105. One end of the clamping plate 104e is hinged to the connecting ring 105 through the second limiting rod 105b. Through the arrangement of the second limiting rod 105b, the other end of the clamping plate 104e is connected to the connecting ring 105, facilitating the clamping plate 104e to better form a circle at the central position of the connecting ring 105 during rotation, and enabling a better clamping action on the oil outlet pipe.

[0039] It should be noted that there are two connecting rings 105, and the space between the two connecting rings 105 is a hollow structure. The two connecting rings 105 are connected by the second limiting rod 105b. A clamping plate 104e is movably connected between the two connecting rings 105. Through the cooperation between the two connecting rings 105 and the second limiting rod 105b, it is convenient for the clamping plate 104e to rotate more smoothly to the central axis position of the connecting ring 105 during rotation, facilitating the clamping and fixing of the oil outlet pipe passing through the central axis position of the connecting pipe, enabling the oil outlet pipe and the connecting pipe to be connected more tightly, and ensuring that the sampled oil in the transformer can flow smoothly into the detection box.

[0040] Furthermore, a toothed plate 108a is connected to the turntable 104a. Through the arrangement of the toothed plate 108a, it can rotate synchronously when the turntable 104a rotates. A connecting gear 108b is meshed with the toothed plate 108a. Through the arrangement of the connecting gear 108b, the rotation of the threaded rod 108c can be realized. The threaded rod 108c is welded to the connecting gear 108b. Through the arrangement of the threaded rod 108c, the left - right movement of the connecting block 108d on the threaded rod 108c can be realized during rotation. The connecting block 108d is threadedly connected to the threaded rod 108c. Through the arrangement of the connecting block 108d, it can drive the rack 109a to move synchronously in position, realizing the opening and closing of the closing member 109. A slider is arranged at the bottom of the connecting block 108d. Through the arrangement of the slider, the connecting block 108d can be effectively limited to prevent the connecting block 108d from sliding horizontally. Through the cooperation between the toothed plate 108a and the connecting gear 108b, when the toothed plate 108a rotates, it drives the connecting gear 108b to rotate in the reverse direction, thereby driving the threaded rod 108c on the connecting gear 108b to rotate coaxially, causing the connecting block 108d on the threaded rod 108c to slide left and right, and further realizing the adjustment of the closing member 109 on one side of the connecting block 108d.

[0041] Meanwhile, a rack 109a is arranged on the outer side of the connecting block 108d. Through the arrangement of the rack 109a, when the rack 109a is moved, the full gear 109b can be driven to rotate counterclockwise. The rack 109a is meshed and connected with the full gear 109b, and the other side of the full gear 109b is meshed and connected with a half gear 109c. Through the cooperation between the full gear 109b and the half gear 109c, when the full gear 109b rotates counterclockwise, the half gear 109c can be driven to rotate clockwise, so as to drive the sealing plate 109d on the outer side of the half gear 109c to rotate clockwise synchronously, achieving the effect of opening one end port of the connecting pipe. A sealing plate 109d is arranged on the outer side of the half gear 109c. Through the arrangement of the sealing plate 109d, the opening or closing of the connecting pipe can be adjusted, ensuring that the connecting pipe remains closed before being connected to the oil outlet pipe, avoiding the entry of air and affecting the detection effect, and being smoothly opened after connection, ensuring that the sampled oil in the oil outlet pipe can smoothly flow into the connecting pipe.

[0042] During use, first rotate the turntable 104a. Under the rotation of the turntable 104a, the connecting plate 104d and the clamping plate 104e are driven to rotate in the same direction, so that the plurality of clamping plates 104e form a hollow circle in the connecting ring 105 while rotating, achieving the clamping of the oil outlet pipe in the middle axis of the connecting ring 105 and realizing the connection effect between the connecting pipe and the oil outlet pipe. At the same time, under the rotation of the turntable 104a, the toothed plate 108a on the outer side is driven to rotate, so that the connecting gear 108b meshed with the toothed plate 108a rotates in the reverse direction, and then drives the threaded rod 108c on the connecting gear 108b to rotate coaxially, driving the connecting block 108d and the rack 109a on the threaded rod 108c to move left and right. Furthermore, under the movement of the rack 109a, the full gear 109b rotates counterclockwise. Driven by the rotation of the full gear 109b, the half gear 109c rotates clockwise, so as to drive the sealing plate 109d on the outer side of the half gear 109c to rotate clockwise synchronously, achieving the effect of opening one end port of the connecting pipe, facilitating the smooth transportation of the sampled oil after the oil outlet pipe is connected to the connecting pipe. On the contrary, when the oil outlet pipe is not connected to the connecting pipe and is closed, the turntable 104a is rotated in the reverse direction to perform the above operations in the reverse direction, thereby realizing the closing of the sealing plate 109d and simultaneously releasing the clamping effect on the oil outlet pipe, which will not be elaborated here.

[0043] Embodiment 2

[0044] Referring to Figure 2 , this is the second embodiment of the present utility model. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: this embodiment provides a connecting mechanism.

[0045] The adjusting assembly 100 further includes a locking member 107.

[0046] Specifically, it further includes an adjusting rod 106. The adjusting rod 106 is arranged on the turntable 104a. By arranging the adjusting rod 106, it is convenient for the staff to operate the turntable 104a inside the connecting column 101 to rotate forward and backward, making the operation more convenient. A second limiting groove 106a is formed on the connecting column 101, and the adjusting rod 106 is slidably connected in the second limiting groove 106a. By forming the second limiting groove 106a, it is convenient for the adjusting rod 106 to move better on the connecting column 101. A locking member 107 is arranged on the adjusting rod 106. By arranging the locking member 107, the adjusting rod 106 can be limited after it is moved to avoid closing the sealing plate 109d when transporting the sampled oil or opening the sealing plate 109d in advance, ensuring the stability of the turntable 104a during use.

[0047] Preferably, the locking member 107 includes a sleeve 107a arranged on the adjusting rod 106. A spring 107b is arranged inside the sleeve 107a. One end of the first spring 107b is provided with a locking rod 107c. A dial 107d is arranged on the locking rod 107c. One end of the locking rod 107c is movably connected with a locking block 107e and penetrates through the locking block 107e. The locking block 107e is arranged on the connecting column 101. By arranging the spring 107b, it is convenient for the adjusting rod 106 to release the thrust on the locking rod 107c after adjusting the position, so that the spring 107b on one side of the locking rod 107c is no longer squeezed and resumes its elastic force, thereby pushing the locking rod 107c to move away from the sleeve 107a until it penetrates through the locking block 107e, realizing the limitation of the adjusting rod 106 and avoiding the phenomenon that the adjusting rod 106 accidentally touches and slides in the second limiting groove 106a to drive the turntable 104a to rotate, making the operation more convenient.

[0048] Embodiment 3

[0049] Referring to Figures 5-7 , this is the third embodiment of the present utility model. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: this embodiment provides a gas sampling and monitoring device.

[0050] Specifically, the detection component 200 includes a transformer 201. An oil outlet pipe 202 is provided at the outer top of the transformer 201. Through the arrangement of the oil outlet pipe 202, the oil in the transformer 201 can be effectively extracted and transported to the connecting pipe 204. The oil outlet pipe 202 is arranged inside the adjusting component 100. One end of the oil outlet pipe 202 is movably connected to a connecting pipe 204. One end of the connecting pipe 204 is connected to a detection box 203, and one end of the connecting pipe 204 extends into the interior of the detection box 203. Through the arrangement of the connecting pipe 204, the oil in the transformer 201 is effectively transported to the oil-gas separator 205. The bottom of the connecting pipe 204 is plugged with the oil-gas separator 205. Through the arrangement of the oil-gas separator 205, the sampled oil is effectively separated into oil and gas. A gas extraction pipe 206 is inserted into one side of the top of the oil-gas separator 205. Through the arrangement of the gas extraction pipe 206, the gas separated in the oil-gas separator 205 is effectively extracted into the chromatographic detector 207. The bottom of the gas extraction pipe 206 is connected to the chromatographic detector 207. Through the arrangement of the chromatographic detector 207, the transmitted gas can be detected in a timely manner. A gas transmission pipe 208 is provided at the bottom of the chromatographic detector 207. A return oil pipe 209 is provided at the bottom of the oil-gas separator 205. The end of the gas transmission pipe 208 is connected to the return oil pipe 209, and the end of the return oil pipe 209 is connected to the outer bottom of the transformer. Through the cooperative arrangement between the gas transmission pipe 208 and the return oil pipe 209, the detected gas can be re-transported into the return oil pipe 209, so that the oil in the return oil pipe 209 can return to the transformer 201 for reuse, reducing energy waste.

[0051] It should be noted that: a semi-permeable membrane is provided at the central axis position of the oil-gas separator 205. The semi-permeable membrane is made of polyimide material and has good air permeability and high temperature resistance. Through the arrangement of the semi-permeable membrane, the oil-gas separator 205 is divided into an oil sample chamber and a gas chamber, which can effectively separate the oil and gas in the oil entering the oil-gas separator 205, facilitating the chromatographic detector 207 to detect the gas separated from the oil.

[0052] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes, and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number, or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0053] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model or those features that are not relevant to the implementation of the present utility model).

[0054] It should be understood that in the development of any actual implementation, in any engineering or design project, a large number of specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without excessive experimentation, such development efforts will be a routine task of design, manufacturing, and production.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and all of them should be covered within the scope of the claims of the present utility model.

Claims

1. A connecting mechanism, characterized in that: include, The adjustment component (100) comprises a connecting column (101) and a connecting hole (102) located on one side of the connecting column (101); a mounting groove (103) is provided inside the connecting column (101); a fixing member (104) is rotatably connected inside the mounting groove (103); a connecting ring (105) is provided on the fixing member (104); a connecting member (108) is provided on the outer side of the fixing member (104); and a closing member (109) is provided on one side of the connecting member (108).

2. The connection mechanism according to claim 1, characterized in that: The fixing member (104) comprises a rotating disk (104a) rotatably arranged in the mounting groove (103); a first limiting groove (104b) is annularly provided on the rotating disk (104a); a first limiting rod (104c) is slidably connected in the first limiting groove (104b); a connecting plate (104d) is hingedly connected to the rotating disk (104a); and a clamping plate (104e) is hingedly connected to the other end of the connecting plate (104d); The connecting plates (104d) are arranged in a ring array relative to the rotating disk (104a); The clamping plate (104e) is arranged in a semi-arc shape.

3. The connection mechanism according to claim 2, characterized in that: The connecting ring (105) is provided with an adjusting groove (105a) in an annular shape, and a second limiting rod (105b) is embedded and installed on the connecting ring (105). The connecting ring (105) is hinged to one end of the clamping plate (104e) via the second limiting rod (105b).

4. The connection mechanism according to claim 3, characterized in that: Two connecting rings (105) are provided, a hollow structure is formed between the two connecting rings (105), the two connecting rings (105) are connected via a second limiting rod (105b), and a clamping plate (104e) is movably connected between the two connecting rings (105).

5. The connection mechanism according to claim 4, characterized in that: The rotating disk (104a) is connected to a toothed plate (108a), the toothed plate (108a) is meshingly connected to a connecting gear (108b), a threaded rod (108c) is welded to the connecting gear (108b), a connecting block (108d) is threadedly connected to the threaded rod (108c), and a sliding block is provided at the bottom of the connecting block (108d).

6. The connection mechanism according to claim 5, characterized in that: A rack (109a) is arranged on the outer side of the connection block (108d), a full gear (109b) is meshedly connected to the rack (109a), a half gear (109c) is meshedly connected to the other side of the full gear (109b), and a sealing plate (109d) is arranged on the outer side of the half gear (109c).

7. The connection mechanism according to claim 2, characterized in that: It also includes an adjusting rod (106), the adjusting rod (106) is arranged on the rotating disk (104a), a second limiting groove (106a) is opened on the connecting column (101), the adjusting rod (106) is slidably connected in the second limiting groove (106a), and a locking member (107) is arranged on the adjusting rod (106).

8. The connection mechanism according to claim 7, characterized in that: The locking member (107) comprises a sleeve (107a) arranged on the adjusting rod (106), a spring (107b) is arranged inside the sleeve (107a), a locking rod (107c) is arranged at one end of the spring (107b), a paddle (107d) is arranged on the locking rod (107c), one end of the locking rod (107c) is movably connected to a locking block (107e) and passes through the locking block (107e), and the locking block (107e) is arranged on the connecting column (101).

9. A gas sampling monitoring device, characterized in that: A connecting mechanism comprising any one of claims 1 to 8; and A detection component (200), comprising a transformer (201), an oil outlet pipe (202) being arranged at the top of the outer side of the transformer (201), the oil outlet pipe (202) being arranged inside the adjustment component (100), one end of the oil outlet pipe (202) being movably connected to a connecting pipe (204), one end of the connecting pipe (204) being connected to a detection box (203), and one end of the connecting pipe (204) extending into the interior of the detection box (203), an oil-gas separator (205) being inserted at the bottom of the connecting pipe (204), an air intake pipe (206) being inserted at one side of the top of the oil-gas separator (205), the bottom of the air intake pipe (206) being connected to a chromatographic detector (207), and a gas delivery pipe (208) being arranged at the bottom of the chromatographic detector (207); An oil return pipe (209) is provided at the bottom of the oil-gas separator (205), the end of the gas transmission pipe (208) is connected to the oil return pipe (209), and the end of the oil return pipe (209) is connected to the outer bottom of the transformer.

10. The gas sampling monitoring device according to claim 9, characterized in that: A semi-permeable membrane is arranged at the central axis of the oil-gas separator (205).

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