Full-automatic oscillation degassing sampling device

Abstract

The invention relates to a full-automatic oscillation degassing sampling device, and belongs to the technical field of insulating oil dissolved gas analysis. The device mainly comprises a mounting box, an oscillation supporting assembly, an oscillation platform, an injector mounting mold assembly, a sample injection pushing mechanism, a sampling injector and a connecting rubber cap, a plurality of sampling injectors can be mounted and treated at the same time, so that the batch efficiency of oil sample treatment is remarkably improved; the problems of excessive compensation, insufficient compensation and inconsistent volume in the traditional manual air compensation process are effectively solved, and the contrast and repeatability of test data are improved; rapid and uniform oscillation of an oil sample can be realized, so that dissolved gas and suspended bubbles in the oil sample are effectively removed, and the oil sample pretreatment effect is remarkably improved; the push plate is stably driven by the servo motor and the screw rod, so that an oil sample in the injector is ensured to be uniformly stressed and stably pushed in the discharging process, secondary bubbles or oil sample residues are not easily generated, and the sample treatment integrity and the detection accuracy are greatly improved; an operator only needs to execute the operation process through the touch screen in a one-key mode.

Description

Technical Field

[0001] The invention belongs to the technical field of insulating oil dissolved gas analysis, and particularly relates to a full-automatic oscillating degassing sampling device. Background Art

[0002] As power systems become increasingly intelligent, power equipment status monitoring places higher standards and efficiency demands on insulating oil quality analysis. Before conducting oil sample analysis (such as dissolved gas analysis (DGA)), the oil sample must undergo a series of pretreatment steps, including degassing, regassing, and sample injection. These steps impact the accuracy and data reliability of the final test. Foreign equipment is expensive, while domestic products lack functionality: A mature, multi-channel, fully automated oil sample processing device is currently unavailable in China.

[0003] Currently, insulating oil quality analysis experiments rely on manual oscillation degassing, which is inefficient and labor-intensive. Manual gas injection volume control is imprecise, resulting in inconsistent oil sample volumes within the syringe, leading to test deviations. Most existing equipment only implements partial automation, such as a single oscillation action, and overall operation still requires frequent manual intervention. Insufficient degassing or excessive gas injection can easily lead to residual bubbles, affecting chromatographic quality.

[0004] Therefore, there is an urgent need for a fully automatic device that can realize multi-channel synchronous oscillation degassing, precise gas replenishment and standard sampling operations to improve the oil sample detection quality and processing efficiency. Summary of the Invention

[0005] In order to overcome the manual oscillation degassing method in the background technology, which is inefficient and labor-intensive; the manual gas replenishment volume control is imprecise, and the oil sample volume in the syringe is inconsistent, resulting in detection deviation; most existing equipment only realizes partial automatic control, such as a single oscillation action, and the overall operation still requires frequent manual intervention. Insufficient degassing or excessive gas replenishment can easily lead to residual bubbles, affecting the quality of chromatograms. The present invention provides a fully automatic oscillating degassing and sampling device; it can install and process multiple sampling syringes at the same time, significantly improving the batch efficiency of oil sample processing; the sampling push mechanism 5 limits the piston rod of the sampling syringe, effectively solving the problems of over-filling, under-filling and volume inconsistency in the traditional manual gas replenishment process, and improving the comparability and repeatability of test data; it can achieve rapid and uniform oscillation of the oil sample, thereby effectively removing dissolved gas and suspended bubbles in the oil sample, significantly improving the oil sample pretreatment effect, and providing a stable and reliable sample basis for subsequent gas chromatography analysis; the servo motor 52 and the screw rod 53 stably drive the push plate 54 to ensure that the oil sample in the syringe is uniformly stressed and stably pushed during the discharge process, and it is not easy to generate secondary bubbles or oil sample residues, thereby greatly improving the integrity of sample processing and detection accuracy; the device integrates multiple steps such as oscillation, cap removal, gas replenishment, oscillation, and sampling into one, and the operator only needs to execute the operation process with one button through the touch screen, significantly reducing the complexity of operation and the degree of manual dependence. The entire process does not require manual disassembly of syringes or transfer of samples, with high operating efficiency and low error tolerance.

[0006] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a fully automatic oscillating degassing sampling device mainly comprises an installation box 1, an oscillating support assembly 2, an oscillating platform 3, a syringe mounting mold assembly 4, a sampling pushing mechanism 5, a sampling syringe 6, and a connecting rubber cap 7, wherein the oscillating platform 3 is installed in the installation box 1 through the oscillating support assembly 2, the syringe mounting mold assembly 4 is installed on the oscillating platform 3, the sampling syringe 6 is evenly installed on the syringe mounting mold assembly 4, the sampling pushing mechanism 5 is installed on the syringe mounting mold assembly 4, the sampling pushing mechanism 5 is at one end of the piston push rod of the sampling syringe 6, and the syringe mounting at the front end of the sampling syringe 6 is installed. The mold assembly 4 is equipped with a connecting rubber cap 7 that can dock with the sampling syringe 6. The connecting rubber cap 7 is connected to an external air source and a detection instrument. The sample injection and pushing mechanism 5 includes a mounting plate 51, a servo motor 52, a screw 53, and a push plate 54. The mounting plate 51 is mounted on the syringe mounting mold assembly 4. Two servo motors 52 are respectively mounted at each end of the mounting plate 51. Two screws 53 are mounted at both ends of the mounting plate 51 via bearings. The servo motors 52 are connected to the screws 53 in a driving manner. The push plate 54 is threadedly mounted on the screws 53 and supported on the end of the piston push rod of the sampling syringe 6. The entire device has a compact structure and adopts a modular design, which facilitates disassembly, assembly, and maintenance. The overall frame of the device is a metal support base, which has a vibration-resistant structural stability.

[0007] Furthermore, the syringe mounting mold assembly 4 includes a mounting seat 41 and an elastic limiting C-shaped clamp 42. The mounting seat 41 is installed on the oscillation platform 3. The mounting seat 41 is evenly provided with limiting grooves 43. The elastic limiting C-shaped clamp 42 is installed in the limiting groove 43. The sampling syringe 6 is clamped and installed in the limiting groove 43 by the elastic limiting C-shaped clamp 42.

[0008] Furthermore, a press-fit cover plate 44 is mounted on the mounting seat 41 . Both ends of the press-fit cover plate 44 are detachably mounted on the mounting seat 41 by bolts. A press-fit groove matching the sampling syringe 6 is provided at the bottom of the press-fit cover plate 44 .

[0009] Furthermore, the mounting seat 41 can be slidably mounted on the oscillation platform 3 through a slide rail 45. The mounting seat 41 is transmission-connected to a motor screw assembly 46 mounted on the oscillation platform 3. A crossbeam 31 is mounted at the front end of the oscillation platform 3, and a connecting rubber cap 7 connected to the sampling syringe 6 is mounted on the crossbeam 31.

[0010] Furthermore, the oscillation platform 3 includes a support platform 32 and an oscillation motor. The oscillation motor is mounted on the support platform 32 and is a voice coil motor capable of high-frequency horizontal oscillation. The voice coil motor is mounted on a shock-absorbing diaphragm and connected to the support platform 32 via a flexible coupling, ensuring smooth and reliable oscillation. The control system supports oscillation frequency settings of 60-120 Hz, with an oscillation time in 60-second increments and an adjustable range of 60-300 seconds. The oscillation amplitude and frequency work together to effectively separate dissolved gas and free bubbles from the oil sample.

[0011] Furthermore, a pressure regulating valve is provided on the pipeline connecting the connecting rubber cap 7 and the external gas source.

[0012] Furthermore, a top cover 11 is hingedly mounted on the top of the installation box 1 for easy opening.

[0013] Furthermore, the connecting rubber cap 7 is connected to a sample injection pump 8 via a hose.

[0014] Furthermore, a PLC controller 12 is installed in the installation box 1, and a touch screen 13 is installed on the side of the installation box 1. The touch screen 13 is connected to the PLC controller 12, and the PLC controller 12 is connected to the servo motor 52, the motor screw assembly, the oscillation motor 33, the pressure regulating valve and the sampling pump 8.

[0015] Power supply: AC 220V input, with leakage protection and overload protection devices; Input interface: external gas source quick connector, supports conventional gas generator or high-purity gas cylinder; Output interface: equipped with Luer sliding joint or standard catheter output interface, which can be connected to the oil sample tester; Control interface: Equipped with USB / serial port, with reserved external control expansion and remote upgrade functions.

[0016] Beneficial effects of the present invention: The present invention can simultaneously install and process multiple sampling syringes, significantly improving the batch efficiency of oil sample processing; by limiting the piston rod of the sampling syringe through the sampling push mechanism, it effectively solves the problems of over-filling, under-filling and volume inconsistency in the traditional manual gas replenishment process, and improves the comparability and repeatability of the test data; it can achieve rapid and uniform oscillation of the oil sample, thereby effectively removing dissolved gas and suspended bubbles in the oil sample, significantly improving the oil sample pretreatment effect, and providing a stable and reliable sample basis for subsequent gas chromatography analysis; by steadily driving the push plate 54 through the servo motor and the screw, it is ensured that the oil sample in the syringe is uniformly stressed and steadily pushed during the discharge process, and it is not easy to generate secondary bubbles or oil sample residues, greatly improving the integrity of sample processing and detection accuracy; this device integrates multiple steps such as oscillation, cap removal, gas replenishment, oscillation, and sampling into one, and the operator only needs to execute the operation process through one button on the touch screen, significantly reducing the complexity of the operation and the degree of manual dependence. The entire process does not require manual disassembly of the syringe or transfer of samples, with high operating efficiency and low fault tolerance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0019] Figure 3 It is a stereoscopic schematic diagram of the syringe mounting mold assembly, the sample injection and pushing mechanism, and the sampling syringe of the present invention. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0021] The present invention discloses a fully automatic oscillating degassing and sampling device, which mainly includes an installation box 1, an oscillating support component 2, an oscillating platform 3, a syringe mounting mold component 4, a sampling pushing mechanism 5, a sampling syringe 6, and a connecting rubber cap 7. The oscillating platform 3 is installed in the installation box 1 through the oscillating support component 2, the syringe mounting mold component 4 is installed on the oscillating platform 3, the sampling syringe 6 is evenly installed on the syringe mounting mold component 4, the sampling pushing mechanism 5 is installed on the syringe mounting mold component 4, the sampling pushing mechanism 5 is at one end of the piston push rod of the sampling syringe 6, and the syringe mounting mold component 4 at the front end of the sampling syringe 6 is connected to the sample push mechanism 5. A connecting rubber cap 7 that can be docked with the sampling syringe 6 is installed on the tool assembly 4, and the connecting rubber cap 7 is connected to the external air source and the detection instrument; the sample injection pushing mechanism 5 includes a mounting plate 51, a servo motor 52, a screw 53, and a push plate 54. The mounting plate 51 is installed on the syringe mounting mold assembly 4, and the two servo motors 52 are respectively installed at both ends of the mounting plate 51. The two screws 53 are installed at both ends of the mounting plate 51 through bearings. The servo motor 52 is transmission-connected to the screw 53, and the push plate 54 is threadedly installed on the screw 53. The push plate 54 is supported on the end of the piston push rod of the sampling syringe 6; the whole machine has a compact structure and adopts a modular design, which is easy to disassemble and maintain. The overall frame of the device is a metal support base with anti-vibration structural stability. When replenishing gas, the servo motor 52 and the screw rod 53 drive the push plate 54 to the appropriate position (45mL position on the sampling syringe scale) to ensure that the gas replenishment volume does not exceed 5mL and the error is less than ±0.2mL, effectively solving the problems of over-filling, under-filling and volume inconsistency in the traditional manual gas replenishment process, and improving the comparability and repeatability of test data; when injecting samples, the servo motor 52 and the screw rod 53 drive the push plate 54 steadily to ensure that the oil sample in the syringe is evenly stressed and steadily advanced during the discharge process, and it is not easy to generate secondary bubbles or oil sample residues, which greatly improves the integrity of sample processing and detection accuracy.

[0022] The present invention can simultaneously install and process multiple sampling syringes, significantly improving the batch efficiency of oil sample processing; by limiting the piston rod of the sampling syringe through the sampling push mechanism, it effectively solves the problems of over-filling, under-filling and volume inconsistency in the traditional manual gas replenishment process, and improves the comparability and repeatability of the test data; it can achieve rapid and uniform oscillation of the oil sample, thereby effectively removing dissolved gas and suspended bubbles in the oil sample, significantly improving the oil sample pretreatment effect, and providing a stable and reliable sample basis for subsequent gas chromatography analysis; by steadily driving the push plate 54 through the servo motor and the screw, it is ensured that the oil sample in the syringe is uniformly stressed and steadily pushed during the discharge process, and it is not easy to generate secondary bubbles or oil sample residues, greatly improving the integrity of sample processing and detection accuracy; this device integrates multiple steps such as oscillation, cap removal, gas replenishment, oscillation, and sampling into one, and the operator only needs to execute the operation process through one button on the touch screen, significantly reducing the complexity of the operation and the degree of manual dependence. The entire process does not require manual disassembly of the syringe or transfer of samples, with high operating efficiency and low fault tolerance.

[0023] The syringe mounting mold assembly 4 includes a mounting seat 41 and an elastic limiting C-shaped clamp 42. The mounting seat 41 is installed on the oscillation platform 3. The mounting seat 41 is evenly provided with limiting grooves 43. The elastic limiting C-shaped clamp 42 is installed in the limiting groove 43. The sampling syringe 6 is clamped and installed in the limiting groove 43 by the elastic limiting C-shaped clamp 42. The structure is simple and the connection limit is reliable, ensuring that the sampling syringe 6 is easy and quick to disassemble and assemble.

[0024] A pressing cover plate 44 is installed on the mounting seat 41. Both ends of the pressing cover plate 44 are detachably mounted on the mounting seat 41 by bolts. A pressing groove matching the sampling syringe 6 is provided at the bottom of the pressing cover plate 44 to ensure that the sampling syringe 6 is securely installed.

[0025] The mounting seat 41 can be slidably mounted on the oscillation platform 3 through the slide rail 45. The mounting seat 41 is transmission-connected to the motor screw assembly 46 mounted on the oscillation platform 3. A crossbeam 31 is mounted on the front end of the oscillation platform 3. The connecting rubber cap 7 connected to the sampling syringe 6 is mounted on the crossbeam 31. The motor screw assembly 46 and the slide rail 45 can drive the syringe mounting mold assembly 4 and the like to slide as a whole. By connecting the sampling syringe 6 to the connecting rubber cap 7, gas replenishment or sampling operations can be performed.

[0026] The oscillation platform 3 includes a support platform 32 and an oscillation motor. The oscillation motor is mounted on the support platform 32 and is a voice coil motor capable of high-frequency horizontal oscillation. The voice coil motor is mounted on a shock-absorbing baffle and connected to the support platform 32 via a flexible coupling, ensuring smooth and reliable oscillation. The control system supports 60-120Hz oscillation frequency settings, with the oscillation time taking 60 seconds as the basic unit and an adjustable range of 60-300 seconds. The oscillation amplitude and frequency jointly ensure the effective precipitation of dissolved gases and free bubbles in the oil sample. The high-frequency oscillation driven by the voice coil motor, with an oscillation frequency of up to 120Hz, can achieve rapid and uniform oscillation of the oil sample, thereby effectively removing dissolved gases and suspended bubbles in the oil sample, significantly improving the oil sample pretreatment effect, and providing a stable and reliable sample basis for subsequent gas chromatography analysis.

[0027] A pressure regulating valve is provided on the pipeline connecting the connecting rubber cap 7 and the external gas source to ensure the consistency of gas replenishment.

[0028] The top of the installation box 1 is hingedly installed with an upper cover 11 for easy opening operation, which avoids safety hazards such as syringe cap dislodgement and splashing, gas leakage, etc. caused by improper operation, and comprehensively improves the work safety of operators.

[0029] The connecting rubber cap 7 is connected to the sampling pump 8 through a hose. The sampling pump 8 can be used to repeatedly perform multiple experiments without frequently disassembling and assembling the sampling syringe 6, thereby ensuring work efficiency.

[0030] A PLC controller 12 is installed in the installation box 1, and a touch screen 13 is installed on the side of the installation box 1. The touch screen 13 is connected to the PLC controller 12, and the PLC controller 12 is connected to the servo motor 52, the motor screw assembly, the oscillation motor 33, the pressure regulating valve and the sampling pump 8; the equipment is equipped with a 5-inch industrial-grade touch screen, which supports custom settings of parameters such as oscillation time and operation sequence. It has a friendly operation interface and has functions such as working status display and fault alarm to meet different oil sample processing requirements.

[0031] The device utilizes a modular design, with independent operation of each module, including the oscillation, gas supply, and sampling modules, without interfering with each other. This facilitates maintenance and replacement. The control system also supports remote fault diagnosis and software updates, offering excellent scalability and adaptability. Compared to similar automation equipment from abroad, which is characterized by high price and complex structure, this device utilizes a compact design and standardized manufacturing while maintaining performance and quality, significantly reducing costs and making it economical and feasible for large-scale deployment.

[0032] Power supply: AC 220V input, with leakage protection and overload protection devices; Input interface: external gas source quick connector, supports conventional gas generator or high-purity gas cylinder; Output interface: equipped with Luer sliding joint or standard catheter output interface, which can be connected to the oil sample tester; Control interface: Equipped with USB / serial port, with reserved external control expansion and remote upgrade functions.

[0033] This device utilizes a six-channel mold design that can simultaneously accommodate and process six sampling syringes, significantly improving batch efficiency in oil sample processing. Compared to traditional single-syringe operation, overall processing efficiency is increased by 3 to 6 times, making it particularly suitable for applications such as power labs that require rapid processing of large quantities of oil samples.

[0034] Working process: The syringe mounting mold assembly 4 is provided with six syringe mounting positions. The sampling syringes are mounted on the syringe mounting mold assembly 4 in sequence and covered with a pressing cover 44 to ensure that each syringe is firmly mounted, with consistent spacing and accurate alignment. The oscillation platform 3 is used for stable and reliable oscillation. The oscillation amplitude and frequency jointly ensure that the dissolved gas and free bubbles in the oil sample are effectively precipitated. The motor screw assembly 46 and the slide rail 45 can drive the syringe mounting mold assembly 4 to slide as a whole. The sampling syringe 6 is connected to the connecting rubber cap 7. The push plate 54 is driven to the appropriate position (sampling syringe 6) by the servo motor 52 and the screw 53. The oscillation platform 3 is stably and reliably oscillated, and the oscillation amplitude and frequency jointly ensure that the dissolved gas and free bubbles in the oil sample are effectively precipitated. The servo motor 52 and the lead screw 53 steadily drive the push plate 54, ensuring that the oil sample in the syringe is evenly stressed and stably advanced during the discharge process, and is less likely to generate secondary bubbles or oil sample residues, thereby greatly improving the integrity of sample processing and the accuracy of detection.

[0035] The present invention can simultaneously install and process multiple sampling syringes, significantly improving the batch efficiency of oil sample processing; by limiting the piston rod of the sampling syringe through the sampling push mechanism, it effectively solves the problems of over-filling, under-filling and volume inconsistency in the traditional manual gas replenishment process, and improves the comparability and repeatability of the test data; it can achieve rapid and uniform oscillation of the oil sample, thereby effectively removing dissolved gas and suspended bubbles in the oil sample, significantly improving the oil sample pretreatment effect, and providing a stable and reliable sample basis for subsequent gas chromatography analysis; by steadily driving the push plate 54 through the servo motor and the screw, it is ensured that the oil sample in the syringe is uniformly stressed and steadily pushed during the discharge process, and it is not easy to generate secondary bubbles or oil sample residues, greatly improving the integrity of sample processing and detection accuracy; this device integrates multiple steps such as oscillation, cap removal, gas replenishment, oscillation, and sampling into one, and the operator only needs to execute the operation process through one button on the touch screen, significantly reducing the complexity of the operation and the degree of manual dependence. The entire process does not require manual disassembly of the syringe or transfer of samples, with high operating efficiency and low fault tolerance.

[0036] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A fully automatic oscillating degassing and sampling device, characterized by: The fully automatic oscillating degassing sampling device comprises an installation box (1), an oscillating support assembly (2), an oscillating platform (3), a syringe mounting mold assembly (4), a sampling pushing mechanism (5), a sampling syringe (6), and a connecting rubber cap (7). The oscillating platform (3) is installed in the installation box (1) through the oscillating support assembly (2), the syringe mounting mold assembly (4) is installed on the oscillating platform (3), the sampling syringe (6) is evenly installed on the syringe mounting mold assembly (4), the sampling pushing mechanism (5) is installed on the syringe mounting mold assembly (4), the sampling pushing mechanism (5) is located at one end of the piston push rod of the sampling syringe (6), and the syringe mounting mold assembly at the front end of the sampling syringe (6) is connected to the sampling syringe (6). The component (4) is provided with a connecting rubber cap (7) capable of docking with the sampling syringe (6), and the connecting rubber cap (7) is connected to an external gas source and a detection instrument; the sample injection pushing mechanism (5) comprises a mounting plate (51), a servo motor (52), a screw rod (53), and a push plate (54); the mounting plate (51) is mounted on the syringe mounting mold assembly (4); two servo motors (52) are respectively mounted at both ends of the mounting plate (51); two screw rods (53) are mounted at both ends of the mounting plate (51) through bearings; the servo motor (52) is transmission-connected to the screw rod (53); the push plate (54) is threadedly mounted on the screw rod (53); and the push plate (54) is supported on the end of the piston push rod of the sampling syringe (6).

2. The fully automatic oscillating degassing and sampling device according to claim 1, characterized in that: The syringe mounting mold assembly (4) comprises a mounting seat (41) and an elastic limiting C-shaped clamp (42). The mounting seat (41) is mounted on the oscillation platform (3). Limiting grooves (43) are evenly provided on the mounting seat (41). The elastic limiting C-shaped clamp (42) is mounted in the limiting groove (43). The sampling syringe (6) is clamped and mounted in the limiting groove (43) by the elastic limiting C-shaped clamp (42).

3. The fully automatic oscillating degassing and sampling device according to claim 2, characterized in that: A pressing cover plate (44) is mounted on the mounting seat (41), and both ends of the pressing cover plate (44) are detachably mounted on the mounting seat (41) by bolts. A pressing groove matching the sampling syringe (6) is provided at the bottom of the pressing cover plate (44).

4. The fully automatic oscillating degassing and sampling device according to claim 3, characterized in that: The mounting seat (41) is slidably mounted on the oscillating platform (3) via a slide rail (45), and the mounting seat (41) is transmission-connected to a motor screw assembly (46) mounted on the oscillating platform (3). A crossbeam (31) is mounted at the front end of the oscillating platform (3), and a connecting rubber cap (7) connected to the sampling syringe (6) is mounted on the crossbeam (31).

5. A fully automatic oscillating degassing and sampling device according to any one of claims 1 to 4, characterized in that: The oscillating platform (3) comprises a supporting platform (32) and an oscillating motor, and the oscillating motor is mounted on the supporting platform (32).

6. The fully automatic oscillating degassing and sampling device according to claim 5, characterized in that: A pressure regulating valve is provided on the pipeline connecting the connecting rubber cap (7) and the external gas source.

7. A fully automatic oscillating degassing and sampling device according to any one of claims 1 to 4 and 6, characterized in that: The installation box (1) is hingedly mounted on the top with an upper cover (11) for easy opening.

8. The fully automatic oscillating degassing and sampling device according to claim 7, characterized in that: The connecting rubber cap (7) is connected to a sample injection pump (8) via a flexible pipe.

9. The fully automatic oscillating degassing and sampling device according to claim 8, characterized in that: A PLC controller (12) is installed in the installation box (1), and a touch screen (13) is installed on the side of the installation box (1). The touch screen (13) is connected to the PLC controller (12), and the PLC controller (12) is connected to the servo motor (52), the motor screw assembly, the oscillation motor (33), the pressure regulating valve and the injection pump (8).

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