Constant-temperature oil storage device for transformer oil sample preparation
By wrapping the heater insulation layer outside the oil cylinder and combining the displacement detection device, the inaccurate volume measurement problem of the transformer oil sample preparation device at different temperatures and pressures is solved, and the accurate measurement of the oil sample in the oil cylinder is achieved, improving the accuracy and stability of the insulating oil.
Patent Information
- Application Number
- CN202421840016.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing preparation device for dissolved gas standard oil samples in transformer oil cannot accurately measure the volume of oil samples in the oil cylinder at different temperatures and atmospheric pressures, resulting in insufficient accuracy and stability of insulating oil, affecting the accuracy of online monitoring.
The heating sheet insulation layer is used to maintain the constant temperature and pressure of the oil cylinder, and the displacement of the cylinder piston is accurately measured through the displacement detection device, and the volume in the cylinder is measured in combination with a displacement sensor or a distance sensor.
It realizes accurate measurement of the oil sample volume in the oil cylinder under different environmental conditions, improves the accuracy and stability of the insulating oil, and reduces system errors.
Smart Images
Figure CN223154633U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of on-line monitoring of transformer oil, and particularly to a constant-temperature oil storage device for preparing transformer oil samples. Background Art
[0002] In the existing device for preparing standard oil samples of dissolved gases in transformer oil, generally, a sealed piston assembly is arranged in the oil mixing chamber of the oil mixing cylinder, a channel is formed during the self-inspection of the sealed piston, and bubbling degassing is achieved through this channel. The oil sample is degassed by combining bubbling degassing and vacuum degassing, so as to improve the degassing efficiency and shorten the time required for the oil-gas dissolution to reach equilibrium.
[0003] However, the temperature control system of the existing device for preparing standard oil samples of dissolved gases in transformer oil is not reasonably designed. When used in environments with different temperatures and different atmospheric pressures, there will be errors in the measured quantity, and the volume of the oil sample in the oil cylinder cannot be accurately measured, so it is impossible to ensure the accuracy and stability of the insulating oil as a standard substance, and further avoid the systematic error caused by the temperature difference of the insulating oil in the on-line monitoring device of dissolved gases. Summary of the Utility Model
[0004] The present application provides a constant-temperature oil storage device for preparing transformer oil samples to solve the technical problem in the prior art that the volume of the oil sample in the oil cylinder cannot be accurately measured.
[0005] To achieve the above object, the present application provides a constant-temperature oil storage device for preparing transformer oil samples, including an oil cylinder, the outside of the oil cylinder is wrapped with a heating sheet insulation layer, an oil cylinder piston is arranged in the oil cylinder, the piston end of the oil cylinder piston is arranged in the oil cylinder, and the piston rod extends out of the oil cylinder. The piston rod is connected with a displacement detection device for measuring the displacement of the oil cylinder piston.
[0006] Preferably, the displacement detection device includes a displacement sensor.
[0007] Preferably, the displacement detection device further includes a guide shaft and a guide shaft fixing plate. The guide shaft fixing plate is fixedly connected with the part of the piston rod extending out of the oil cylinder, and the guide shaft is slidably connected with the guide shaft fixing plate.
[0008] Preferably, the displacement sensor is connected with the guide shaft fixing plate.
[0009] Preferably, when the guide shaft fixing plate slides along the guide shaft, the displacement of the displacement sensor is measured by the displacement sensor to further measure the displacement of the oil cylinder piston.
[0010] Preferably, the guide shaft fixing plate is connected with the guide shaft through a linear bearing.
[0011] Preferably, the displacement detection device is provided with a distance sensor.
[0012] Preferably, the displacement detection device further includes a guide shaft and a guide shaft fixing plate. The guide shaft fixing plate is fixedly connected to the part of the piston rod that extends out of the oil cylinder. The guide shaft is slidably connected to the guide shaft fixing plate. When the guide shaft fixing plate slides along the guide shaft, the distance from the distance sensor to the guide shaft fixing plate is measured to measure the displacement of the piston of the oil cylinder.
[0013] Preferably, the piston of the oil cylinder is a piston of stainless steel material.
[0014] According to the above content, the beneficial effects of the present application are as follows:
[0015] By providing a heating sheet insulation layer, it is used to keep the oil cylinder at a constant temperature and pressure, ensuring that the equipment is not affected by the external environment and improving the accuracy of the equipment; in this constant temperature and pressure environment, by providing a displacement detection device, when the piston moves up and down, the position of the piston can be accurately judged through the displacement detection device, and then the volume in the oil cylinder can be calculated. Description of the Drawings
[0016] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:
[0017] Figure 1 is a schematic structural diagram of an embodiment of the present application. Detailed Embodiments
[0018] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described and explained below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without creative efforts fall within the scope of protection of the present application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be understood that the content disclosed in the present application is insufficient.
[0019] References to "embodiments" in this application mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art will explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments without conflict.
[0020] Unless otherwise defined, the technical terms or scientific terms involved in this application should have the ordinary meaning understood by those of ordinary skill in the technical field to which this application belongs. The words "a", "an", "one kind", "the" and the like involved in this application do not indicate a quantity limitation and can represent a singular or plural number. The terms "include", "comprise", "have" and any variations thereof involved in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may further include steps or units not listed, or may further include other steps or units inherent to these processes, methods, products or devices. The words "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application means greater than or equal to two. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific order for the objects.
[0021] See Figure 1 , a constant-temperature oil storage device for transformer oil sample preparation in this application mainly includes an oil cylinder 1. The outside of the oil cylinder is wrapped with a heating sheet insulation layer (not shown in the figure) to keep the oil cylinder at a constant temperature and pressure, ensure that the equipment is not affected by the external environment, and improve the accuracy of the equipment. The heating sheet insulation layer can adopt an existing conventional insulation layer with a heating function, such as a silicone rubber heating sheet.
[0022] An oil cylinder piston 2 is arranged in the oil cylinder. The piston end of the oil cylinder piston is arranged inside the oil cylinder, and the piston rod passes out of the oil cylinder. The piston rod is connected with a displacement detection device for measuring the displacement of the oil cylinder piston. When the piston moves up and down, the position of the piston can be accurately judged through the displacement detection device, and then the volume inside the oil cylinder can be calculated. The oil cylinder piston is preferably an oil cylinder piston made of stainless steel to prevent other gases from being generated by the reaction between the transformer oil and the oil cylinder piston.
[0023] In this embodiment, the displacement detection device includes a displacement sensor 6, a guide shaft 4, and a guide shaft fixing plate 3. The guide shaft fixing plate is fixedly connected to the part of the piston rod that extends out of the oil cylinder. The guide shaft is slidably connected to the guide shaft fixing plate. The displacement sensor is connected to the guide shaft fixing plate. When the piston moves up and down, the guide shaft fixing plate slides along the guide shaft, so that the displacement of the oil cylinder piston can be measured by measuring the displacement of the guide shaft fixing plate through the displacement sensor, thereby accurately determining the position of the piston, and then the volume inside the oil cylinder can be calculated.
[0024] Preferably, the guide shaft fixing plate is connected to the guide shaft through a linear bearing 5, which can prevent the piston rod from rotating when moving up and down, affecting the measurement accuracy of the displacement sensor.
[0025] In other embodiments, the displacement detection device can also use a distance sensor. In this structure, the displacement detection device further includes a guide shaft and a guide shaft fixing plate. The guide shaft fixing plate is fixedly connected to the part of the piston rod that extends out of the oil cylinder. The guide shaft is slidably connected to the guide shaft fixing plate. When the guide shaft fixing plate slides along the guide shaft, the distance from the guide shaft fixing plate is measured by the distance sensor to measure the displacement of the oil cylinder piston.
[0026] After the constant temperature and constant pressure oil storage device for transformer oil sample preparation in this embodiment adopts the above structure, it has the following advantages:
[0027] 1. Through a heating sheet insulation layer wrapped around the outer layer of the oil cylinder, the oil cylinder can be kept in a constant temperature and constant pressure state.
[0028] 2. The volume inside the oil cylinder can be accurately measured by the oil cylinder through the displacement detection device.
[0029] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. A constant-temperature oil storage device for transformer oil sample preparation, comprising an oil cylinder, wherein an oil cylinder piston is arranged in the oil cylinder, the piston end of the oil cylinder piston is arranged in the oil cylinder, and the piston rod extends out of the oil cylinder. It is characterized in that: A heating sheet insulation layer is wrapped around the outside of the oil cylinder, and a displacement detection device for measuring the displacement of the piston of the oil cylinder is connected to the piston rod.
2. The constant-temperature oil storage device for transformer oil sample preparation according to claim 1, characterized in that: The displacement detection device is provided with a displacement sensor.
3. A constant-temperature oil storage device for transformer oil sample preparation according to claim 2, characterized in that: The displacement detection device further includes a guide shaft and a guide shaft fixing plate. The guide shaft fixing plate is fixedly connected to the part of the piston rod that extends out of the oil cylinder, and the guide shaft is slidably connected to the guide shaft fixing plate.
4. A constant temperature oil storage device for transformer oil sample preparation according to claim 3, characterized in that: The displacement sensor is connected to the guide shaft fixing plate.
5. A constant temperature oil storage device for transformer oil sample preparation according to claim 3, characterized in that: The guide shaft fixing plate is connected to the guide shaft through a linear bearing.
6. A constant temperature oil storage device for transformer oil sample preparation according to claim 1, characterized in that: The displacement detection device is provided with a distance sensor.
7. A constant-temperature oil storage device for transformer oil sample preparation according to claim 6, characterized in that: The displacement detection device further includes a guide shaft and a guide shaft fixing plate. The guide shaft fixing plate is fixedly connected to the part of the piston rod that extends out of the oil cylinder, and the guide shaft is slidably connected to the guide shaft fixing plate. When the guide shaft fixing plate slides along the guide shaft, the distance from the guide shaft fixing plate is measured by the distance sensor to further measure the displacement of the piston of the oil cylinder.
8. A constant-temperature oil storage device for transformer oil sample preparation according to any one of claims 1 to 7, characterized in that: The piston of the oil cylinder is a piston of the oil cylinder made of stainless steel.