Push rod mechanism and distribution transformer operation abnormal state isolation system

Abstract

The invention discloses a push rod mechanism and a distribution transformer operation abnormal state isolation system, and relates to the technical field of distribution network transformer protection, and the push rod mechanism comprises a mounting frame which is mounted on a cross arm of a transformer, the mounting frame is provided with a mounting seat, the mounting seat is provided with a supporting rod, and the supporting rod is movably connected with a push frame; through monitoring of a sensor and response of a linkage motor of a push rod mechanism, the system can quickly disconnect fault equipment when an abnormal state occurs, and the influence of faults on a power grid is reduced; the plurality of modules monitor key parameters of the transformer in real time, such as temperature, pressure and current, so that faults such as overload and short circuit can be prevented, and the safety of a power grid is improved; in addition, an automatic monitoring and protection mechanism reduces the dependence on manual inspection and maintenance, and reduces the long-term operation and maintenance cost. In addition, the accurate control of the electric mechanism ensures that the faulty equipment can be reliably disconnected when needed, and further damage caused by misoperation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of distribution network transformer protection, and in particular to a push rod mechanism and a distribution transformer abnormal operation state isolation system. Background Art

[0002] In the prior art, the protection measures for distribution network transformers mainly rely on drop-out fuses. Although this device can cut off the power supply in the event of a short circuit or overload, its disadvantages are: it requires manual regular maintenance and inspection, otherwise it may fail due to aging or damage; it does not act quickly enough, and may delay disconnection after a fault occurs, increasing the scope of the fault; the mechanical action of the drop-out fuse may cause inflexible operation and increase the fault handling time; the drop-out fuse will only perform the disconnection action when a short circuit or overload fault occurs, and it cannot isolate the fault point when other faults occur, affecting the reliability of power supply. These shortcomings make it difficult to reduce the trip rate of the distribution network and the failure rate of the transformer, affecting the stability and safety of the power grid.

[0003] Therefore, it is urgent to propose a push rod mechanism and an isolation system for abnormal operation of distribution transformers. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems existing in the existing push rod mechanism, the present invention is proposed.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a push rod mechanism, comprising:

[0007] A mounting frame, which is mounted on the cross arm of the transformer, the mounting frame is provided with a mounting seat, the mounting seat is provided with a support rod, the support rod is movably connected with a push frame, the push frame is provided with a link push rod, and a control component is provided between the push frame and the mounting frame;

[0008] The control component can control the movement of the link push rod.

[0009] As a preferred solution of the push rod mechanism of the present invention, the control assembly includes a fixing seat arranged on the mounting frame, a fixing frame arranged on the mounting frame, a limit block arranged on the fixing frame, a slide bar connected to the limit block, a fixing block movably connected to the slide bar, a spring connected to the fixing block, a transmission member movably connected to the fixing frame, and a brake block movably connected to the fixing frame through a torsion spring;

[0010] The spring is sleeved on the slide bar, the slide bar is movably inserted on the push frame, the fixed block is connected to the transmission member, and the transmission member is in contact with the push frame.

[0011] As a preferred solution of the push rod mechanism of the present invention, wherein: the control component further comprises a linkage motor, and a linkage rope connected to the output end of the linkage motor;

[0012] The linkage rope is connected to the brake block and can drive the brake block to move.

[0013] As a preferred solution of the push rod mechanism of the present invention, wherein: an installation frame is provided on the installation frame, a pulley is movably connected to the inner side of the installation frame, a reset rope is connected to the transmission member, and the pulley can support the reset rope.

[0014] As a preferred solution of the push rod mechanism of the present invention, wherein: the linkage motor is a linear push rod motor.

[0015] As a preferred solution of the push rod mechanism of the present invention, wherein: the transmission member includes a transmission block movably connected to the fixed frame, and a transmission frame fixedly connected to the transmission block;

[0016] The transmission frame is provided with an insertion hole, and the push frame passes through the insertion hole and penetrates the transmission frame.

[0017] As a preferred solution of the push rod mechanism of the present invention, wherein: the brake block includes a convex surface 1 and a concave surface adjacent to the convex surface 1;

[0018] The transmission block includes a second protruding surface and an inclined surface adjacent to the second protruding surface;

[0019] The inclined surface can abut against the first convex surface, and the second concave surface can block the second convex surface.

[0020] As a preferred solution of the push rod mechanism of the present invention, wherein: the support rod and the mounting seat are provided in two groups, and the two groups of the mounting seats are respectively provided near the two ends of the fixed beam;

[0021] The number of the link push rods and the drop-out fuses on the cross arm are the same and the positions correspond one to one. The link push rods are bent, and the ends of the link push rods penetrate between the insulators and link rods of the corresponding drop-out fuses.

[0022] The beneficial effects of the present invention are as follows: the transmission frame can drive the push frame and the push rod to move synchronously to disconnect the fuse. The transmission frame can be fixed and pushed open by utilizing the cooperation of the transmission block and the brake block. The present invention is also provided with a linkage motor and a linkage pull rope to disconnect the fuse through an electric drive control component. The operation is simple and easy to use. The setting of the reset pull rope enables the staff to reset the mechanism on the ground, saving time and effort.

[0023] In view of the above problems existing in the existing distribution transformer operation abnormal state isolation system, the present invention is proposed.

[0024] In order to solve the above technical problems, the present invention provides the following technical solutions: a distribution transformer abnormal operation state isolation system, comprising any of the above-mentioned push rod mechanisms, including:

[0025] A pressure sensor module is installed at the gas relief valve of the transformer to monitor the pressure changes inside the transformer;

[0026] The temperature sensor module is attached to the heat sink of the transformer and is used to monitor the temperature of the transformer to prevent overheating;

[0027] Three AC current acquisition modules are connected in series to the secondary output line of the transformer current transformer to monitor the change of current;

[0028] The control module is used to receive signals from the above modules, and includes an LCD touch screen. The data of the above modules can be viewed in real time through the LCD touch screen, and the safety threshold of the above modules can be set.

[0029] As a preferred solution of the abnormal state isolation system of the distribution transformer of the present invention, when the control module detects that any parameter exceeds the preset safety threshold, it can immediately trigger the linkage motor of the push rod mechanism to make the linkage motor work.

[0030] The beneficial effects of the present invention are as follows: through sensor monitoring and the response of the linkage motor of the push rod mechanism, the system can quickly disconnect the faulty equipment when an abnormal state occurs, reducing the impact of the fault on the power grid; multiple modules monitor the key parameters of the transformer in real time, such as temperature, pressure and current, which can prevent faults such as overload and short circuit, thereby improving the safety of the power grid; in addition, the automated monitoring and protection mechanism reduces the reliance on manual inspections and maintenance, reducing long-term operation and maintenance costs; in addition, the precise control of the electric mechanism ensures that the faulty equipment can be reliably disconnected when needed, avoiding further damage caused by operational errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a partial structural schematic diagram of the present invention.

[0034] Figure 3 It is a partial structural schematic diagram of the control component of the present invention.

[0035] Figure 4 It is a schematic diagram of the related structures of the transmission part and the brake part of the control assembly of the present invention.

[0036] Figure 5 It is a side view of the brake member, the transmission member and the fixed block of the present invention. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0040] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0041] Example 1

[0042] Reference Figure 1 to Figure 4, which is the first embodiment of the present invention, provides a push rod mechanism, including a mounting frame 100, which is fixedly installed on the cross arm of the transformer, a mounting seat 102 is fixedly connected to the mounting frame 100, a support rod 103 is fixedly connected to the mounting seat 102, a push frame 104 is slidably connected to the support rod 103, a link push rod 105 is fixedly connected to the push frame 104, and a control component 200 is arranged between the push frame 104 and the mounting frame 100; the control component 200 can control the movement of the link push rod 105.

[0043] There are two groups of support rods 103 and mounting seats 102, and the two groups of mounting seats 102 are respectively fixedly connected near the two ends of the fixed beam, and the control component 200 is located between the two mounting seats 102; the number of the Link push rods 105 and the drop-out fuses on the crossarm are the same and the positions correspond one to one. There are three drop-out fuses in this embodiment, and the Link push rods 105 are bent. The end of the Link push rods 105 is inserted between the insulator and the Link rod of the corresponding drop-out fuse. When the push frame 104 moves on the support rod 103 toward the Link rod of the drop-out fuse, the three pull rods move synchronously, and push the corresponding Link rods together to disconnect the drop-out fuse and turn off the power supply.

[0044] The control assembly 200 includes a fixing seat 201 fixedly connected to the upper middle side of the mounting frame 100, a fixing frame 202 fixedly connected to the lower middle side of the mounting frame 100, a limit block 203 fixedly arranged on the upper side of the fixing seat 201, a slide bar 204 fixedly connected to the limit block 203, a fixing block 205 slidably connected to the slide bar 204, a spring 206 fixedly connected at one end to the side of the fixing block 205, and a spring 206 rotatably connected to the fixing frame 202 away from the mounting frame 100. The transmission member 207 on the side, and the brake block 208 which is rotatably connected to the lower part of the fixed frame 202 through a torsion spring; the spring 206 is sleeved on the slide bar 204, the slide bar 204 is movably inserted and passes through the middle of the push frame 104, the fixed block 205 is fixedly connected to the transmission member 207, the push frame 104 passes through the transmission member 207, and the slide bar 204 also passes through the push frame 104. When the transmission member 207 moves along the straight line direction where the slide bar 204 is located, it can drive the link push rod 105 to move synchronously.

[0045] When it is necessary to put the control component 200 in a tightened state, that is, to make the link push rod 105 located between the insulator and the link rod of the drop-out type fuse, the control transmission member 207 is moved toward the direction of the fixed seat 201 and the spring 206 is compressed. The transmission member 207 can drive the push frame 104 to move toward the fixed seat 201 along the straight line direction where the slide bar 204 is located. At the same time, the transmission member 207 can squeeze the brake block 208 until the brake jams the transmission member 207. The spring 206 is compressed for a certain distance and can accumulate a certain amount of energy. The push frame 104 drives the three link push rods 105 to move between the insulator and the link rod of the drop-out type fuse.

[0046] When it is necessary to push the link rod away, the upper part of the brake block 208 is controlled to move in the direction away from the transmission member 207, and the brake block 208 can release the transmission member 207. After the spring 206 is not restricted, it can release the accumulated energy to pop the transmission member 207 away from the fixed seat 201, so that the transmission member 207 pushes the push frame 104 away, and the three link push rods 105 can push the three link rods together, and the corresponding three drop-out fuses are disconnected.

[0047] The control component 200 also includes a linkage motor 300, a linkage rope 301 connected to the output end of the linkage motor 300, the linkage rope 301 is a steel wire rope, the linkage motor 300 is a linear push rod motor, and the other end of the motor linkage rope 301 is connected to the brake block 208. When the linkage motor 300 is driven, the linkage rope 301 can pull the upper part of the brake block 208 in a direction away from the transmission member 207, and start the control component 200, and the three link push rods 105 can disconnect the drop-out fuse.

[0048] The mounting frame 100 is provided with a mounting frame 303, and a pulley 304 is movably connected to the inner side of the mounting frame 303. A reset rope 302 is fixedly connected to the upper part of the transmission member 207. A through hole capable of fixing the end of the reset rope 302 is provided on the top of the transmission frame 207b. The reset rope 302 passes through between the pulley 304 and the side of the mounting frame 303 away from the mounting frame 100 to prevent the reset rope 302 from running around. The pulley 304 can support the reset rope 302. The end of the reset rope 302 away from the transmission member 207 is extended downward. When not in use, it is bound to the bracket for installing the transformer and can be grabbed by the staff on the ground. The reset rope 302 is in the position, and the reset rope 302 reserves a movable length for the transmission frame 207b, which does not affect the activities of the control component 200 and the push frame 104 and prevents the reset rope 302 from being blown away; when the staff needs to reset the control component 200 to return it to the tightened state, the reset rope 302 is pulled downward, and the reset rope 302 is supported by the pulley 304 to pull the transmission member 207 back, so that the transmission member 207 is stuck by the brake block 208, the control component 200 returns to the tightened state, and the push frame 104 and the link push rod 105 also return to their original positions, so that the staff does not need to climb to a high place to reset the control component 200.

[0049] Example 2

[0050] Reference Figure 4-5, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the transmission member 207 includes a transmission block 207a rotatably connected to the end of the fixed frame 202 away from the fixed seat 201, and a transmission frame 207b fixedly connected to the upper side of the transmission block 207a; the inner side of the transmission frame 207b is hollow and the four circumferential walls are all provided with insertion holes 207c, the push frame 104 passes through the left and right insertion holes 207c and penetrates the transmission frame 207b, the slide bar 204 passes through the front and rear insertion holes 207c of the transmission frame 207b and penetrates the transmission frame 207b, and a through hole for the linkage rope 301 to pass through is provided on the upper side of the brake block 208 away from the transmission block 207a.

[0051] The brake block 208 includes a protruding surface 207d and a recessed surface 207e adjacent to the protruding surface 207d, the protruding surface 207d is located on the side of the upper end of the brake block 208 facing the transmission block 207a, and the recessed surface 207e is located below the protruding surface 207d; the transmission block 207a includes a protruding surface 207f and an inclined surface 207g adjacent to the protruding surface 207f, the protruding surface 207f is located on the side of the upper part of the transmission block 207a facing the brake block 208, and the inclined surface 207g is located on the lower side of the transmission block 207a; the inclined surface 207g can abut against the protruding surface 207d, and the recessed surface 207e can block the protruding surface 207f.

[0052] When the control component 200 is in a tightened state, the spring 206 of the control component 200 is in a squeezed state. The compression of the spring 206 causes the upper part of the transmission member 207 to rotate in a direction away from the brake block 208. The protruding surface 207f of the transmission block 207a is inserted into the recessed surface 207e of the brake block 208. The upper surface of the protruding surface 207f of the transmission block 207a abuts against the upper surface of the recessed surface 207e of the brake block 208. Due to the elastic force of the torsion spring, the transmission block 207a is stuck by the brake block 208. When it is necessary to release the energy of the spring 206 and disconnect the drop-out fuse, the upper part of the control brake block 208 is rotated to the side away from the transmission block 207a until the brake block 208 no longer blocks the transmission block 207a. The spring 206 drives the transmission member 207 as a whole to drive the push frame 104 to pop out together, and the drop-out fuse is disconnected.

[0053] Reference Figure 5After the spring 206 ejects the transmission member 207, the brake block 208 rebounds clockwise and returns to a nearly vertical state. When the control assembly 200 needs to be tightened again, the transmission member 207 is controlled to rotate counterclockwise by the reset rope 302. The inclined surface 207g of the transmission block 207a first squeezes the upper right side of the convex surface 207d of the brake block 208, causing the brake block 208 to rotate counterclockwise until the convex surface 207e of the transmission block 207a re-enters the concave surface 207e of the brake block 208, and the brake block 208 re-jams the transmission block 207a, and the spring 206 also returns to the squeezed state.

[0054] The remaining structures are the same as those of Example 1.

[0055] Example 3

[0056] Reference Figure 1 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: a distribution transformer operation abnormal state isolation system, comprising the push rod mechanism of the above embodiment, including, a pressure sensor module, which is installed at the exhaust valve of the transformer and is used to monitor the pressure change inside the transformer;

[0057] The temperature sensor module is attached to the heat sink of the transformer and is used to monitor the temperature of the transformer to prevent overheating;

[0058] Three AC current acquisition modules are connected in series to the secondary output line of the transformer current transformer to monitor the change of current;

[0059] The control module is used to receive signals from the above modules. The control module has a built-in intelligent algorithm that can analyze sensor data and compare it with preset safety thresholds. The control module includes an LCD touch screen, through which the data of the above modules can be viewed in real time, and the safety thresholds and alarm parameters of the above modules can be set.

[0060] When the control module detects that any parameter exceeds the preset safety threshold, the control module immediately issues an audible and visual alarm.

[0061] When the control module detects that any parameter exceeds a preset safety threshold, it can immediately trigger the linkage motor 300 of the push rod mechanism to make the linkage motor 300 work, thereby triggering the push rod mechanism to disconnect the drop-out fuse.

[0062] The remaining structure is the same as that of Example 2.

[0063] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0064] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0065] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. Push rod mechanism, characterized in that: include, A mounting frame (100) is mounted on a cross arm of a transformer, the mounting frame (100) is provided with a mounting seat (102), the mounting seat (102) is provided with a support rod (103), a push frame (104) is movably connected to the support rod (103), a link push rod (105) is provided on the push frame (104), and a control component (200) is provided between the push frame (104) and the mounting frame (100); The control component (200) is capable of controlling the movement of the link push rod (105).

2. The push rod mechanism according to claim 1, characterized in that: The control assembly (200) comprises a fixing seat (201) arranged on the mounting frame (100), a fixing frame (202) arranged on the mounting frame (100), a limit block (203) arranged on the fixing frame (202), a sliding rod (204) connected to the limit block (203), a fixing block (205) movably connected to the sliding rod (204), a spring (206) connected to the fixing block (205), a transmission member (207) movably connected to the fixing frame (202), and a brake block (208) movably connected to the fixing frame (202) via a torsion spring; The spring (206) is sleeved on the slide bar (204), the slide bar (204) is movably plugged into the push frame (104), the fixed block (205) is connected to the transmission member (207), and the transmission member (207) is in contact with the push frame (104).

3. The push rod mechanism according to claim 2, characterized in that: The control component (200) further comprises a linkage motor (300) and a linkage rope (301) connected to an output end of the linkage motor (300); The linkage rope (301) is connected to the brake block (208) and can drive the brake block (208) to move.

4. The push rod mechanism according to claim 3, characterized in that: The mounting frame (100) is provided with a mounting frame (303), the inner side of the mounting frame (303) is movably connected with a pulley (304), the transmission member (207) is connected with a reset pull rope (302), and the pulley (304) can play a supporting role for the reset pull rope (302).

5. The push rod mechanism according to claim 4, characterized in that: The linkage motor (300) is a linear push rod motor.

6. The push rod mechanism according to claim 5, characterized in that: The transmission member (207) comprises a transmission block (207a) movably connected to the fixed frame (202), and a transmission frame (207b) fixedly connected to the transmission block (207a); The transmission frame (207b) is provided with an insertion hole (207c), and the push frame (104) passes through the insertion hole (207c) and penetrates the transmission frame (207b).

7. The push rod mechanism according to claim 6, characterized in that: The brake block (208) includes a convex surface (207d) and a concave surface (207e) adjacent to the convex surface (207d); The transmission block (207a) comprises a second protruding surface (207f) and an inclined surface (207g) adjacent to the second protruding surface (207f); The inclined surface (207g) can abut against the protruding surface one (207d), and the concave surface (207e) can block the protruding surface two (207f).

8. The push rod mechanism according to claim 7, characterized in that: The support rod (103) and the mounting seat (102) are each provided in two groups, and the two groups of the mounting seats (102) are respectively provided near the two ends of the fixed beam; The number of the link push rods (105) and the drop-out fuses on the cross arm are the same and the positions correspond one to one. The link push rods (105) are bent, and the ends of the link push rods (105) are inserted between the insulator and the link rod of the corresponding drop-out fuse.

9. A distribution transformer operation abnormal state isolation system, characterized by: The push rod mechanism according to any one of claims 3 to 8 comprises: A pressure sensor module is installed at the gas relief valve of the transformer to monitor the pressure changes inside the transformer; The temperature sensor module is attached to the heat sink of the transformer and is used to monitor the temperature of the transformer to prevent overheating; Three AC current acquisition modules are connected in series to the secondary output line of the transformer current transformer to monitor the change of current; The control module is used to receive signals from the above modules, and includes an LCD touch screen. The data of the above modules can be viewed in real time through the LCD touch screen, and the safety threshold of the above modules can be set.

10. The distribution transformer abnormal operation state isolation system according to claim 9, characterized in that: When the control module detects that any parameter exceeds a preset safety threshold, it can immediately trigger the linkage motor (300) of the push rod mechanism to make the linkage motor (300) work.

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