Pressure relief valve rain cover and oil-immersed transformer applying same
By designing a rain shield for the pressure relief valve, the problem of the oil-immersed transformer pressure relief valve being washed away by rainwater is solved, waterproof protection and signal stability are achieved, and the service life of the pressure relief valve is extended.
Patent Information
- Application Number
- CN202421407858.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The pressure relief valve of the oil-immersed transformer is easily washed by rainwater when it rains, causing rainwater to enter the interior, affecting signal transmission and accelerating rust, shortening its service life.
A rain shield for a pressure relief valve is designed, comprising a square cover, a hinge, and a locking structure. The square cover is arranged on the pressure relief valve on the side wall of an oil-immersed transformer, is hingedly connected to the side wall by a hinge, and is fixed by a locking structure to prevent rainwater from directly falling on the pressure relief valve.
Effectively prevent rainwater from intruding into the pressure relief valve, extend its service life, ensure the stability of signal transmission, and prevent rust.
Smart Images
Figure CN223427311U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transformer accessory technical field, especially relate to a pressure release valve rain cover and apply its oil -immersed transformer. BACKGROUND
[0002] Oil -immersed transformer is generally used for outdoor, and the pressure release valve installed on the lateral wall of oil -immersed transformer is completely exposed in the air, does not have any protection, when it rains, the exposed pressure release valve is directly washed by rain, and rain can easily enter the inside of pressure release valve, which can affect the secondary wiring signal transmission and cause misoperation to result in protection failure. In addition, the pressure release valve is prone to rust, affecting the service life. SUMMARY
[0003] The utility model discloses a kind of pressure release valve rain cover and apply its oil -immersed transformer.
[0004] To achieve the above object, the utility model provides a kind of pressure release valve rain cover, applied to oil -immersed transformer, comprising:
[0005] Square cover, the square cover is equipped with open on its side surface, and the bottom wall of the square cover is provided with an avoiding through-hole;
[0006] Hinge, the hinge is arranged on the side surface of the square cover, and the side surface where the hinge is located is adjacent to the side surface where the open is located, to be hinged with the lateral wall of the oil -immersed transformer;
[0007] Locking structure, the locking structure includes connecting block, sleeve, lock rod and padlock, the connecting block is located in the square cover, and is fixedly connected with the outer wall of the oil -immersed transformer, and the connecting block is provided with internal thread hole;The sleeve is arranged on the side surface opposite to the hinge, and the side wall of the sleeve is provided with perforation;The side end of the lock rod is provided with bolt head, and the bolt head is located in the sleeve, and the end of the lock rod away from the bolt head passes through the square cover, and the section of the lock rod that passes into the square cover is provided with external thread that is screwed with the internal thread hole;The lock beam of the padlock passes through the perforation and the end opening of sleeve, so that the padlock is hung on the sleeve.
[0008] Further, the hinge is vertically arranged pivot, and the lower end of the pivot is provided with pin hole or protruding pin.
[0009] Further, the number of the pivot is two, and the two pivots are arranged at intervals.
[0010] Further, the square cover is provided with a plurality of nameplate mounting holes on the side surface opposite to the open.
[0011] Furthermore, the avoidance through hole extends toward the opening direction to the bottom wall edge of the square cover shell.
[0012] Furthermore, a transition arc is provided between the edge of the avoidance through hole and the edge of the bottom wall of the square cover.
[0013] The second aspect of the present invention discloses an oil-immersed transformer, comprising a transformer body and the pressure relief valve rain shield described in the first aspect of the present invention, wherein the side wall of the transformer body is provided with a pressure relief valve, and the square cover covers the pressure relief valve.
[0014] The technical solution provided by the utility model may have the following beneficial effects:
[0015] The pressure relief valve rain shield provided by the utility model covers the pressure relief valve on the side wall of the oil-immersed transformer through a square cover, thereby shielding and protecting the pressure relief valve, effectively preventing rain from directly falling on the exposed pressure relief valve, isolating rainwater, extending the service life of the pressure relief valve, and preventing rainwater from invading the interior of the pressure relief valve and affecting signal transmission. The square cover has an open side close to the side wall of the oil-immersed transformer, allowing the pressure relief valve of the oil-immersed transformer to enter the interior of the square cover through the open side. The bottom wall of the square cover is provided with an avoidance through-hole to facilitate the output end of the pressure relief valve to pass downward through the square cover.
[0016] Furthermore, a hinge is provided on the side surface of the square cover on the open side to be hingedly connected to the side wall of the oil-immersed transformer, so that the square cover is hinged to the side wall of the oil-immersed transformer to facilitate opening and closing, thereby facilitating the inspection of the pressure relief valve.
[0017] It is worth noting that the square cover is also locked to the oil-immersed transformer via a locking structure, allowing the square cover to be opened only when unlocked. Specifically, to lock the cover, a socket wrench is inserted into the socket, the bolt head of the locking rod is rotated, and the section of the locking rod with the external thread is threadedly connected to the connecting block. The socket wrench is then withdrawn from the socket, and the padlock's lock beam is inserted through the perforation and the end opening of the socket to lock the cover, so that the padlock is attached to the socket. Because the padlock's lock beam prevents the socket wrench from being inserted into the socket again to rotate the bolt head, the locking rod cannot be separated from the connecting block fixed to the side wall of the oil-immersed transformer, thereby preventing the square cover from being rotated. To unlock the cover, the padlock is unlocked with a key and removed from the socket. The socket wrench is then inserted into the socket and the bolt head is rotated to separate the locking rod from the connecting block, allowing the square cover to be rotated. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0019] Figure 1 This is a schematic structural diagram of the rain shield of the pressure relief valve of the present invention;
[0020] Figure 2 This is a schematic diagram of the locking structure of the rain shield of the pressure relief valve of the present invention;
[0021] Figure 3 This is a schematic structural diagram of the sleeve of the rain shield of the pressure relief valve of the present invention;
[0022] Explanation of the accompanying figures: 1-square cover, 11-opening, 12-avoidance through hole, 13-nameplate mounting hole, 14-transition arc, 2-hinge, 3-locking structure, 31-connecting block, 32-sleeve, 33-locking rod, 34-bolt head. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0025] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0026] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or solutions that meet both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0027] The following combination Figures 1 to 3 , describing a pressure relief valve rain shield according to an embodiment of the utility model, which is applied to an oil-immersed transformer, comprising:
[0028] A square housing 1, wherein the side surface of the square housing 1 is provided with an opening 11, and the bottom wall of the square housing 1 is provided with an avoidance through hole 12;
[0029] A hinge 2, the hinge 2 being provided on a side surface of the square cover 1, the side surface where the hinge 2 is located being adjacent to the side surface where the opening 11 is located, so as to be hinge-connected to a side wall of the oil-immersed transformer;
[0030] The locking structure 3 includes a connecting block 31, a sleeve 32, a locking rod 33 and a padlock 34. The connecting block 31 is located in the square cover 1 and is fixedly connected to the outer wall of the oil-immersed transformer. The connecting block 31 is provided with an internal threaded hole; the sleeve 32 is arranged on the side surface opposite to the hinge 2, and the side wall of the sleeve 32 is provided with a through hole 36; one end of the locking rod 33 is provided with a bolt head 35, and the bolt head 35 is located in the sleeve 32. The end of the locking rod 33 away from the bolt head 35 passes through the square cover 1, and the section of the locking rod 33 that penetrates the square cover 1 is provided with an external thread that matches the internal threaded hole; the locking beam of the padlock 34 passes through the through hole 36 and the end opening of the sleeve 32, so that the padlock 34 is hung on the sleeve 32.
[0031] The pressure relief valve rain shield provided by the present invention covers the pressure relief valve on the side wall of the oil-immersed transformer through a square cover 1, thereby shielding and protecting the pressure relief valve, effectively preventing rain from directly falling on the exposed pressure relief valve, isolating rainwater, extending the service life of the pressure relief valve, and preventing rainwater from invading the interior of the pressure relief valve and affecting signal transmission. The square cover 1 is provided with an opening 11 on one side close to the side wall of the oil-immersed transformer, so that the pressure relief valve of the oil-immersed transformer can enter the interior of the square cover 1 through the opening 11. The bottom wall of the square cover 1 is provided with an avoidance through-hole 12 to facilitate the output end of the pressure relief valve to pass downward through the square cover 1.
[0032] Furthermore, a hinge 2 is provided on the side surface of the square cover 1 on the side of the opening 11 to be hingedly connected to the side wall of the oil-immersed transformer, so that the square cover 1 is hinged to the side wall of the oil-immersed transformer to facilitate opening and closing, thereby facilitating the inspection of the pressure relief valve.
[0033] It is worth noting that the square cover 1 is also locked to the oil-immersed transformer via the locking structure 3, so that the square cover 1 can only be opened when unlocked. Specifically, when locking is required, a socket wrench is inserted into the socket 32, and the bolt head 35 of the locking rod 33 is rotated so that the section of the locking rod 33 with the external thread is threadedly connected to the connecting block 31. The socket wrench is then withdrawn from the socket 32, and finally, the locking beam of the padlock 34 is passed through the through-hole 36 and the end opening of the socket 32 to lock the cover, so that the padlock 34 is hooked to the sleeve 32. Because the locking beam of the padlock 34 prevents the socket wrench from being inserted into the socket 32 again to rotate the bolt head 35, the locking rod 33 cannot be separated from the connecting block 31 fixed to the side wall of the oil-immersed transformer, thereby preventing the square cover 1 from rotating. When unlocking is required, the padlock 34 is unlocked by a key and removed from the sleeve 32 , and then a socket wrench is inserted into the sleeve 32 to rotate the bolt head 35 so that the locking rod 33 is separated from the connecting block 31 , and the square cover 1 can be rotated.
[0034] Specifically, the hinged member 2 is optionally a vertically disposed movable shaft, with a pin hole or a protruding pin provided at its lower end. The movable shaft is welded to the side surface of the square housing 1. A fixed shaft is provided on the side wall of the oil-immersed transformer, with a corresponding pin hole or protruding pin provided at its upper end. When a pin hole is provided at the lower end of the movable shaft, a corresponding protruding pin is provided at the upper end of the fixed shaft. In this manner, when the square housing 1 is assembled, the movable shaft and the fixed shaft overlap vertically, allowing the protruding pin at the upper end of the fixed shaft to insert into the pin hole at the lower end of the movable shaft. The fixed shaft provides a certain degree of support for the movable shaft. When the square housing 1 needs to be disassembled, the movable shaft can be separated from the fixed shaft by simply pulling it upward, making disassembly quick and easy. When a pin hole is provided at the lower end of the movable shaft, a corresponding protruding pin is provided at the upper end of the fixed shaft. In this manner, when the square housing 1 is assembled, the movable shaft and the fixed shaft overlap vertically, allowing the protruding pin at the lower end of the movable shaft to insert into the pin hole at the lower end of the fixed shaft. The fixed shaft plays a certain supporting role on the movable shaft. When the square cover 1 needs to be disassembled, the movable shaft can be separated from the fixed shaft by directly pulling it upwards, which is convenient and quick to disassemble. Of course, in other embodiments, the hinge 2 can also be a hinge.
[0035] Preferably, there are two movable shafts, which are spaced apart. In a specific application, there are also two fixed shafts. This allows the square housing 1 to have two force points when rotating, facilitating force balance.
[0036] Furthermore, the square cover 1 is provided with a plurality of nameplate mounting holes 13 on the side surface opposite to the opening 11 , so that the nameplate can be mounted on the outer surface of the square cover 1 .
[0037] like Figure 1 As shown, the escape hole 12 extends toward the opening 11 to the bottom edge of the square housing 1, giving the escape hole 12 a U-shape. Thus, as the opening 11 of the square housing 1 gradually approaches the side wall of the oil-immersed transformer, the output end of the pressure relief valve can also gradually enter the escape hole 12 horizontally. Therefore, installing the pressure relief valve requires only horizontal movement of the square housing 1.
[0038] Optionally, a transition arc 14 is provided between the edge of the avoidance through hole 12 and the bottom wall edge of the square cover 1. In this way, the presence of sharp corners is reduced, thereby preventing the sharp corners from scratching the pressure relief valve and damaging the pressure relief valve when the square cover 1 is installed.
[0039] The utility model also discloses an oil-immersed transformer, comprising a transformer body and the above-mentioned pressure relief valve rain shield, the side wall of the transformer body is provided with a pressure relief valve, and the square cover 1 covers the pressure relief valve.
[0040] In the oil-immersed transformer provided by the present invention, a square cover 1 covers the pressure relief valve provided on the side wall, thereby shielding and protecting the pressure relief valve, effectively preventing rainwater from directly falling on the exposed pressure relief valve, isolating rainwater, extending the service life of the pressure relief valve, and preventing rainwater from invading the interior of the pressure relief valve and affecting signal transmission. The side of the square cover 1 having an opening 11 is located near the side wall of the oil-immersed transformer, allowing the pressure relief valve of the oil-immersed transformer to enter the interior of the square cover 1 through the opening 11. The bottom wall of the square cover 1 is provided with an avoidance through-hole 12 to facilitate the output end of the pressure relief valve to pass downward through the square cover 1.
[0041] Furthermore, a hinge 2 is provided on the side surface of the square cover 1 on the side of the opening 11 to be hingedly connected to the side wall of the oil-immersed transformer, so that the square cover 1 is hinged to the side wall of the oil-immersed transformer to facilitate opening and closing, thereby facilitating the inspection of the pressure relief valve.
[0042] It is worth noting that the square cover 1 is also locked to the oil-immersed transformer via the locking structure 3, so that the square cover 1 can only be opened when unlocked. Specifically, when locking is required, a socket wrench is inserted into the socket 32, and the bolt head 35 of the locking rod 33 is rotated so that the section of the locking rod 33 with the external thread is threadedly connected to the connecting block 31. The socket wrench is then withdrawn from the socket 32, and finally, the locking beam of the padlock 34 is passed through the through-hole 36 and the end opening of the socket 32 to lock the cover, so that the padlock 34 is hooked to the sleeve 32. Because the locking beam of the padlock 34 prevents the socket wrench from being inserted into the socket 32 again to rotate the bolt head 35, the locking rod 33 cannot be separated from the connecting block 31 fixed to the side wall of the oil-immersed transformer, thereby preventing the square cover 1 from rotating. When unlocking is required, the padlock 34 is unlocked by a key and removed from the sleeve 32 , and then a socket wrench is inserted into the sleeve 32 to rotate the bolt head 35 so that the locking rod 33 is separated from the connecting block 31 , and the square cover 1 can be rotated.
[0043] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present invention.
Claims
1. A rain shield for a pressure relief valve, used for an oil-immersed transformer, characterized by: include: A square cover, wherein the side surface of the square cover is provided with an opening, and the bottom wall of the square cover is provided with an avoidance through hole; A hinge, wherein the hinge is provided on a side surface of the square cover, the side surface where the hinge is located is adjacent to the side surface where the opening is located, so as to be hinge-connected to a side wall of the oil-immersed transformer; A locking structure, which includes a connecting block, a sleeve, a locking rod and a padlock, wherein the connecting block is located in the square cover and is fixedly connected to the outer wall of the oil-immersed transformer, and the connecting block is provided with an internal threaded hole; the sleeve is arranged on the side surface on the opposite side of the hinge, and the side wall of the sleeve is provided with a through hole; one end of the locking rod is provided with a bolt head, and the bolt head is located in the sleeve, and the end of the locking rod away from the bolt head passes through the square cover, and the section of the locking rod that penetrates the square cover is provided with an external thread that matches the internal threaded hole; the locking beam of the padlock passes through the through hole and the end opening of the sleeve so that the padlock is hung on the sleeve.
2. The rain shield for a pressure relief valve according to claim 1, characterized in that: The hinge is a vertically arranged movable shaft, and a pin hole or a protruding pin is provided at the lower end of the movable shaft.
3. The pressure relief valve rain shield according to claim 2, characterized in that: There are two movable rotating shafts, which are spaced apart.
4. The pressure relief valve rain shield according to claim 1, characterized in that: The square cover is provided with a plurality of nameplate mounting holes on the side surface opposite to the opening.
5. The pressure relief valve rain shield according to claim 1, characterized in that: The avoidance through hole extends toward the opening direction to the bottom wall edge of the square cover shell.
6. The pressure relief valve rain shield according to claim 5, characterized in that: A transition arc is provided between the edge of the avoidance through hole and the edge of the bottom wall of the square cover.
7. An oil-immersed transformer, characterized in that: It comprises a transformer body and a pressure relief valve rain shield as claimed in any one of claims 1 to 6, wherein the side wall of the transformer body is provided with a pressure relief valve, and the square cover is provided with the pressure relief valve.