CN217006239U

CN217006239U - Transformer oil conservator air tightness process monitoring device

Info

Publication number: CN217006239U
Application number: CN202123030592.6U
Authority: CN
Inventors: 潘友建
Original assignee: Jiangsu Xiong Feng Electric Equipment Co ltd
Current assignee: Jiangsu Xiong Feng Electric Equipment Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-07-19
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a transformer conservator air tightness process monitoring device which comprises a workbench for installing all devices, a PLC (programmable logic controller) for controlling all electrical elements and a conveyor belt, wherein a detection mechanism is installed at the upper part of the workbench; the detection mechanism comprises a flow rate sensor and three linear degrees of freedom arranged along X, Y and Z axes, the linear degrees of freedom are driven by a high-pair matching rotating pair, and the flow rate sensor is matched and connected with the linear degrees of freedom in the Y axis direction; according to the utility model, through mechanical linkage and mutual cooperation between the detection mechanism and the driving mechanism, the inflation detection can be carried out on the oil conservator in the actual use process, the dynamic detection can be carried out on any structural position around the oil conservator, the position of a process defect point is found and captured, the yield is improved, meanwhile, the process defect point of a defective product is helped to be quickly positioned by workers, and the use effect and the production quality of the actual product are effectively improved.

Description

Transformer conservator air tightness process monitoring device

Technical Field

The utility model relates to the technical field of oil immersed transformers, in particular to a transformer conservator air tightness process monitoring device.

Background

The oil immersed transformer is characterized in that a coil and a magnetic core of the transformer are immersed in special transformer oil, so that heat dissipation can be realized, the coil can be isolated from air, the corrosion of moisture in the air to the magnetic core of the transformer can be prevented, and a certain arc extinguishing effect can be realized;

as shown in fig. 6 of the attached drawings of the specification, a cylindrical device (area a in the drawing) above a transformer (area D in the drawing) is an oil conservator, and the main function of the oil conservator is that when the load of the transformer is increased, the oil temperature is increased, so that the oil in an oil tank is expanded, excessive oil flows into the oil conservator, and when the temperature is reduced, the oil in the oil conservator flows into the oil tank again to play a role in automatically adjusting the oil level; when the volume of the transformer oil expands or shrinks along with the change of the oil temperature, the oil conservator plays the roles of oil storage and oil supplement, the oil tank can be ensured to be filled with oil, and meanwhile, because the oil conservator is arranged, the contact surface of the transformer and the air is reduced, and the degradation speed of the oil is slowed down; the side surface of the oil conservator is also provided with an oil level gauge which can monitor the change of the oil level;

however, the airtightness index of the conservator is difficult to reach the performance index of the theoretical design stage due to the influence of the phenomena of the actual processing technology, tolerance size matching or processing errors and the like, and when the airtightness technology is poor and is applied to an actual transformer, on one hand, transformer oil is easily affected by damp, the arc extinguishing effect cannot be achieved, the magnetic core of the transformer is corroded, and the service life of equipment is influenced; on the other hand, a gap exists in the transformer oil conservator and the gap circulates with air, so that the pressure release valve cannot work normally, the transformer cannot unload oil automatically under emergency, and safety accidents are easily caused.

Therefore, the device for monitoring the airtightness process of the transformer oil conservator is provided.

SUMMERY OF THE UTILITY MODEL

In view of this, embodiments of the present invention provide a device for monitoring an airtight process of a transformer conservator, so as to solve or alleviate technical problems in the prior art, and provide at least one useful choice;

the technical scheme of the embodiment of the utility model is realized as follows: a transformer conservator air tightness process monitoring device comprises a workbench for installing all devices, a PLC (programmable logic controller) for controlling all electrical components and a conveyor belt, wherein a detection mechanism is installed on the upper part of the workbench;

the detection mechanism comprises a flow rate sensor and three linear degrees of freedom arranged along X, Y and Z axes, the linear degrees of freedom are driven by a high-pair matching rotating pair, and the flow rate sensor is matched and connected with the linear degrees of freedom in the Y axis direction;

the linear degree of freedom of the Z-axis direction of the detection mechanism is matched with the pneumatic calipers and the driving mechanism, the driving mechanism comprises an air pump and also comprises a linear degree of freedom of the Y-axis direction, the linear degree of freedom of the driving mechanism is matched with the rotating pair for driving, and the driving mechanism is matched with another rotating pair and is driven by the other rotating pair to be provided with the air pump.

As further preferable in the present technical solution: the detection mechanism comprises three moving frames, a stepping motor, a first ball screw and a fixing frame;

an output shaft of the stepping motor is used as the rotary pair of the detection mechanism and fixedly connected with a threaded rod of the first ball screw used as a high pair of the detection mechanism, and the output shaft is respectively arranged along X, Y and the Z axis;

a moving nut of the first ball screw is used as the linear degree of freedom of the detection mechanism and is fixedly connected with the outer surface of the moving frame, and the moving frame arranged along the Y-axis direction is fixedly connected with the outer surface of the flow velocity sensor;

the moving frame, the stepping motor and the first ball screw along the X-axis and the Z-axis are respectively arranged on the outer surface of the fixed frame, and the moving frame, the stepping motor and the first ball screw along the Y-axis are matched and connected with the linear degree of freedom of the detection mechanism in the X-axis direction;

and the pneumatic calipers and the driving mechanism are installed at the top of the moving frame along the Z axial direction.

As further preferable in the present technical solution: the movable frame is connected with the fixed frame in a sliding mode through the sliding table assemblies in the X-axis direction and the Z-axis direction, and the movable frame is connected with the fixed frame in a sliding mode through the sliding table assemblies in the Y-axis direction and the X-axis direction.

As further preferable in the present technical solution: the sliding table assembly comprises a sliding block and a sliding rail which are connected in a sliding mode.

As further preferable in the present technical solution: the driving mechanism comprises a rack, a first servo motor, a second ball screw, a sliding frame, a second servo motor and a hinge frame;

the top of the frame is provided with the first servo motor, an output shaft of the first servo motor serves as a rotary pair of the driving mechanism and a threaded rod of the second ball screw serving as a high pair of the driving mechanism, a moving nut of the second ball screw serves as the linear degree of freedom of the driving mechanism and is fixedly connected with the outer surface of the sliding frame, the top of the sliding frame is provided with the second servo motor, an output shaft of the second servo motor serves as another rotary pair of the driving mechanism and is fixedly connected with the inner side wall of the hinge frame, and the air pump is arranged at the bottom of the hinge frame.

Compared with the prior art, the utility model has the beneficial effects that:

the detection mechanism and the driving mechanism are mechanically linked and matched with each other, so that the inflation detection can be carried out on the oil conservator in the actual use process, any structural position around the oil conservator is dynamically detected, the position of a process defect point is found and captured, the yield is improved, meanwhile, workers are helped to quickly locate the process defect point of a defective product, and the use effect and the production quality of the actual product are effectively improved;

by mechanical linkage and mutual cooperation between the detection mechanism and the driving mechanism, the detection operation can be performed on the oil conservators with any size, any size and any structure, and dynamic detection can be performed on any position outside the oil conservators, so that the actual detection effect and accuracy are effectively improved, and the wide applicability requirement is met;

the utility model can be directly incorporated into a transformer production line as a process, can be directly adapted to the current production conditions, and effectively meets the actual economic requirement.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a perspective structure according to the present invention;

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

FIG. 3 is a schematic view of a three-dimensional, one-view structure of the detection mechanism and the driving mechanism of the present invention;

FIG. 4 is a schematic view of another perspective structure of the detecting mechanism and the driving mechanism of the present invention;

FIG. 5 is a schematic view of another perspective structure of the detecting mechanism and the driving mechanism of the present invention;

fig. 6 is a schematic diagram of the transformer and the conservator.

Reference numerals are as follows: 1. a work table; 2. a PLC controller; 3. a conveyor belt; 4. a detection mechanism; 401. a movable frame; 402. a stepping motor; 403. a fixed mount; 404. a first ball screw; 405. a flow rate sensor; 5. a sliding table assembly; 6. pneumatic calipers; 7. a drive mechanism; 701. a frame; 702. a first servo motor; 703. a second ball screw; 704. a carriage; 705. a second servo motor; 706. hinging frame; 707. an air pump.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

It should be noted that the terms "first", "second", "symmetrical", "array", and the like are used for descriptive and positional purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "symmetrical," etc., may explicitly or implicitly include one or more of that feature; similarly, where the number of features is not limited by the language "two", "three", etc., it is to be noted that such features can also include one or more of the number of features explicitly or implicitly;

in the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly; for example, the connection can be fixed, detachable or integrated; the two elements may be mechanically connected, directly connected, welded, indirectly connected through an intermediary, or connected through a communication between the two elements or an interaction between the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the specification and drawings in combination with the specific case.

Examples

Referring to fig. 1-5, the present invention provides a technical solution: a transformer conservator airtightness process monitoring device comprises a workbench 1 for mounting all devices, a PLC (programmable logic controller) 2 for controlling all electrical components and a conveyor belt 3, wherein a detection mechanism 4 is mounted at the upper part of the workbench 1;

the conservator produced by the front production process is transported on the conveyor belt 3 (area a in the figure);

the detection mechanism 4 comprises a flow rate sensor 405 and three linear freedom degrees arranged along X, Y and Z axes, the linear freedom degrees are driven by a high-pair matching rotating pair, and the flow rate sensor 405 is matched and connected with the linear freedom degree of the Y axis;

the linear degree of freedom of the detection mechanism 4 in the Z axial direction is matched with the pneumatic caliper 6 and the driving mechanism 7, the driving mechanism 7 comprises an air pump 707 and also comprises a linear degree of freedom in the Y axial direction, the linear degree of freedom of the driving mechanism 7 is matched with the rotation pair for driving, and the linear degree of freedom of the driving mechanism 7 is matched with the other rotation pair and is driven by the other rotation pair to be provided with the air pump 707.

In this embodiment, please refer to fig. 5: the detection mechanism 4 includes three moving frames 401, a stepping motor 402, and a first ball screw 404, and includes a fixed frame 403;

an output shaft of the stepping motor 402 serving as a rotation pair of the detection mechanism 4 is fixedly connected with a threaded rod of a first ball screw 404 serving as a high pair of the detection mechanism 4 and is respectively arranged along X, Y and the Z axis;

a moving nut of the first ball screw 404 is fixedly connected to the outer surface of the moving frame 401 as a linear degree of freedom of the detection mechanism 4, and the moving frame 401 arranged along the Y-axis direction is fixedly connected to the outer surface of the flow rate sensor 405;

the moving frame 401, the stepping motor 402 and the first ball screw 404 along the X and Z axial directions are respectively mounted on the outer surface of the fixed frame 403, and the moving frame 401, the stepping motor 402 and the first ball screw 404 along the Y axial direction are connected to the detection mechanism 4 in a matching manner along the X axial direction;

the pneumatic calipers 6 and the driving mechanism 7 are mounted at the top of the moving frame 401 along the Z-axis direction;

the pneumatic calipers 6 are used for fixing the oil conservator;

in the detection mechanism 4, the stepping motor 402 drives the first ball screw 404 to rotate, the first ball screw 404 converts the torque into linear rotation to the moving nut thereof, and drives the moving frames 401 respectively mounted thereon and the components connected thereto to respectively perform X, Y or Z-axis movement adjustment, wherein the flow rate sensor 405 performs position adjustment relative to X, Y or Z-axis to detect air leakage of the conservator from various external directions.

In this embodiment, specifically: the top of the Z-axis moving frame 401 is provided with a mechanical arm (area C in fig. 1 or fig. 3), the mechanical arm is responsible for clamping the conservator from the production line, placing the conservator in the pneumatic caliper 6 for clamping, positioning and capturing can be carried out by matching with a position sensor in the actual use process, and the motion track of the mechanical arm is programmed in advance.

In this embodiment, specifically: when the flow velocity sensor 405 confirms that the abnormal flow velocity of air on the surface of the conservator is detected, the air tightness process problem of the conservator can be judged, an electric signal is sent to the PLC controller 2, the PLC controller 2 firstly gives an alarm and suspends all electrical components, and then the electric signal is transferred to the mechanical arm;

the staff can mark to the spatial position that flow sensor 405 belongs to and for the conservator this moment to start PLC controller 2 again, PLC controller 2 makes the arm transport this conservator to the assigned position according to another movement track and stores, carries out repairing by the staff.

In this embodiment, specifically: a drag chain (area B in fig. 3) is matched between the moving frame 401 along the X-axis and the moving frame 401 along the Y-axis, and is responsible for storing wires for the stepping motor 402 and the air pump 707 which are driven by the Y-axis and need to move positions.

In this embodiment, as shown in fig. 5: the moving frames 401 along the X and Z axial directions are mutually connected with the fixed frame 403 in a sliding manner through the sliding table assembly 5, and the moving frames 401 along the Y and X axial directions are mutually connected in a sliding manner through the sliding table assembly 5;

the sliding table assembly 5 is responsible for optimizing the stroke and motion fit relation in the detection mechanism 4.

In this embodiment, specifically: the sliding table assembly 5 comprises a sliding block and a sliding rail which are connected with each other in a sliding manner.

In this embodiment, as shown in fig. 5: the driving mechanism 7 comprises a frame 701, a first servo motor 702, a second ball screw 703, a carriage 704, a second servo motor 705 and a hinge frame 706;

a first servo motor 702 is installed at the top of the rack 701, an output shaft of the first servo motor 702 serving as a rotary pair of the driving mechanism 7 is fixedly connected with a threaded rod of a second ball screw 703 serving as a high pair of the driving mechanism 7, a moving nut of the second ball screw 703 serving as a linear degree of freedom of the driving mechanism 7 is fixedly connected with the outer surface of the carriage 704, a second servo motor 705 is installed at the top of the carriage 704, an output shaft of the second servo motor 705 serving as another rotary pair of the driving mechanism 7 is fixedly connected with the inner side wall of a hinge frame 706, and an air pump 707 is installed at the bottom of the hinge frame 706;

in the driving mechanism 7, the first servo motor 702 is responsible for driving the second ball screw 703 to lift and adjust the carriage 704, and then drives the air pump 707 to lift and insert the conservator again for air filling detection, and the second servo motor 705 is responsible for driving the hinge bracket 706 to drive the air pump 707 to perform angle adjustment, and performs matching position adjustment and air filling for different valve bodies and chambers of the conservator, and then performs detection operation.

In this embodiment, specifically: in the driving mechanism 7, the first servo motor 702 and the second servo motor 705 need to be matched with the PLC controller 2 in advance for angle programming and control, so as to determine the actually detected driving trajectory.

In this embodiment, specifically: all electric elements of the device are supplied with power by mains supply.

In this embodiment, specifically: all electric elements of the device are controlled by a PLC (programmable logic controller) 2.

Working principle or structural principle: the oil conservator produced by the front production process is transported on the transport belt 3, and the mechanical arm is used for clamping the oil conservator from the production line and placing the oil conservator in the pneumatic calipers 6 for clamping;

in the detection mechanism 4, the stepping motor 402 drives the first ball screw 404 to rotate, the first ball screw 404 converts the torque into linear rotation to the moving nut thereof, and drives the moving frames 401 respectively installed on the first ball screw and the moving nut thereof to respectively perform X, Y or Z-axis movement adjustment on the components connected with the moving frames 401, wherein the flow velocity sensor 405 performs position adjustment relative to X, Y or Z-axis to detect air leakage of the conservator in each external direction;

in the driving mechanism 7, the first servo motor 702 is responsible for driving the second ball screw 703 to lift and adjust the carriage 704, so as to drive the air pump 707 to lift and then insert into the conservator again for air filling detection, and meanwhile, the second servo motor 705 is responsible for driving the hinge bracket 706 to drive the air pump 707 to perform angle adjustment, and performs matching position adjustment and air filling for different valve bodies and chambers of the conservator, so as to perform detection operation;

when the flow velocity sensor 405 confirms that the abnormal flow velocity of air on the surface of the conservator is detected, the air tightness process problem of the conservator can be judged, an electric signal is sent to the PLC controller 2, the PLC controller 2 firstly gives an alarm and suspends all electrical components, and then the electric signal is transferred to the mechanical arm;

the staff can mark the spatial position of the flow velocity sensor 405 relative to the conservator, and start the PLC controller 2 again, the PLC controller 2 enables the mechanical arm to transport the conservator to a designated position for storage according to another motion track, and the staff performs repair processing;

after the normal conservator is detected, the mechanical arm rotates reversely, and the normal conservator is placed back to the conveying belt 3.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various changes or substitutions within the technical scope of the present invention, and these should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a transformer conservator gas tightness technology monitoring devices, includes workstation (1) of all devices of installation, PLC controller (2) of all electrical components of control to and transport area (3), its characterized in that: a detection mechanism (4) is arranged at the upper part of the workbench (1);

the detection mechanism (4) comprises a flow rate sensor (405) and three linear degrees of freedom arranged along X, Y and Z axes, the linear degrees of freedom are driven by a high-pair matching rotating pair, and the flow rate sensor (405) is matched and connected with the linear degrees of freedom in the Y axis direction;

the linear degree of freedom of the Z axial direction of the detection mechanism (4) is matched with a pneumatic caliper (6) and a driving mechanism (7), the driving mechanism (7) comprises an air pump (707) and further comprises a linear degree of freedom of the Y axial direction, the linear degree of freedom of the driving mechanism (7) is matched with a rotating pair for driving, and the linear degree of freedom of the driving mechanism (7) is matched with another rotating pair and is driven by the other rotating pair to be provided with the air pump (707).

2. The transformer conservator airtightness process monitoring device according to claim 1, wherein: the detection mechanism (4) comprises three moving frames (401), a stepping motor (402) and a first ball screw (404), and also comprises a fixed frame (403);

an output shaft of the stepping motor (402) is used as the rotating pair of the detection mechanism (4) and fixedly connected with a threaded rod of the first ball screw (404) used as a high pair of the detection mechanism (4), and the output shaft is respectively arranged along the X, Y axis and the Z axis;

a moving nut of the first ball screw (404) is fixedly connected with the outer surface of the moving frame (401) as the linear degree of freedom of the detection mechanism (4), and the moving frame (401) arranged along the Y-axis direction is fixedly connected with the outer surface of the flow rate sensor (405);

the moving frame (401), the stepping motor (402) and the first ball screw (404) along the X-axis and the Z-axis are respectively arranged on the outer surface of the fixed frame (403), and the moving frame (401), the stepping motor (402) and the first ball screw (404) along the Y-axis are matched and connected with the linear degree of freedom of the detection mechanism (4) along the X-axis;

the pneumatic caliper (6) and the driving mechanism (7) are mounted on the top of the moving frame (401) along the Z-axis direction.

3. The transformer conservator airtightness process monitoring device according to claim 2, wherein: along X and Z axial remove frame (401) with through slip table subassembly (5) mutual sliding connection between mount (403), along Y and X axial remove between frame (401) through slip table subassembly (5) mutual sliding connection.

4. The transformer conservator airtightness process monitoring device according to claim 3, wherein: the sliding table assembly (5) comprises a sliding block and a sliding rail which are connected in a sliding mode.

5. The transformer conservator airtightness process monitoring device according to any one of claims 1 to 4, wherein: the driving mechanism (7) comprises a rack (701), a first servo motor (702), a second ball screw (703), a sliding frame (704), a second servo motor (705) and a hinge frame (706);

the top of the rack (701) is provided with the first servo motor (702), an output shaft of the first servo motor (702) is used as a rotary pair of the driving mechanism (7) and fixedly connected with a threaded rod of the second ball screw (703) which is used as a high pair of the driving mechanism (7), a moving nut of the second ball screw (703) is used as a linear degree of freedom of the driving mechanism (7) and fixedly connected with the outer surface of the sliding frame (704), the top of the sliding frame (704) is provided with the second servo motor (705), an output shaft of the second servo motor (705) is used as the other rotary pair of the driving mechanism (7) and fixedly connected with the inner side wall of the hinge frame (706), and the bottom of the hinge frame (706) is provided with the air pump (707).