An underwater transformer output connector and transformer

Abstract

This utility model relates to the field of cable connector technology, and discloses an underwater transformer cable connector and a transformer. The connector is located at the top side of the second layer housing of the transformer and is used for insertion and connection with an external cable connector plug. The cable connector plug has an annular gap and includes: a second layer cable connector housing with a connecting cavity; a connector end is located within the connecting cavity of the second layer cable connector housing, allowing the external cable connector plug to be inserted into the connector end via the connecting cavity; the inner wall of the connecting cavity of the second layer cable connector housing has several plate cavities; this utility model allows one end of several positioning plates to be inserted into the annular gap of the cable connector plug, thereby limiting and fixing the position of the cable connector plug within the connecting cavity; preventing the second layer cable connector housing from becoming loose or even falling off during insertion and connection.

Description

Technical Field

[0001] This utility model relates to the field of output connector technology, and in particular to an underwater transformer output connector and a transformer. Background Technology

[0002] In marine engineering, especially in deep-sea underwater operations, the reliable and stable operation of underwater transformers is a necessary condition for the energy supply of underwater equipment; underwater transformer output connectors are key components used to connect transformer outputs to other electrical equipment in underwater environments.

[0003] Existing underwater transformers are usually protected by a double-layer outer casing. The first outer casing and the second outer casing need to be connected by an outgoing connector for power transmission of the cable. When the cable connector plug is inserted into the connecting cavity inside the outgoing connector, the insertion connection is prone to loosening or even falling off, causing the power transmission of the underwater transformer to be interrupted. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an underwater transformer output connector and a transformer to solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An underwater transformer output connector, disposed at a connection end on the top side of the transformer's second-layer housing, is used for insertion and connection with an external cable connector plug, the cable connector plug having an annular gap, comprising: The second-layer outgoing connector housing has a connecting cavity, and the connecting cavity of the second-layer outgoing connector housing has a connector end, so that the external cable connector plug is inserted into the connector end through the connecting cavity; the inner wall of the connecting cavity of the second-layer outgoing connector housing has a number of plate cavities, and the second-layer outgoing connector housing has a first annular cavity, a second annular cavity and a circular cavity respectively. Several positioning plates are movably installed in several plate cavities. The positioning plates are configured such that when they move toward the axial position, one end of each positioning plate can be inserted into the annular gap of the cable connector plug to limit and fix the position of the cable connector plug in the connection cavity. A transmission assembly is disposed in the first and second annular cavities of the second-layer outgoing connector housing. The transmission assembly is configured to synchronously drive several positioning plates for position adjustment when it rotates. An adjustment component is located inside the circular cavity of the second-layer outgoing connector housing. The adjustment component can drive the transmission component to rotate and adjust.

[0006] Preferably, the plurality of plate cavities within the housing of the second layer outgoing terminal connector are arranged in a circumferential array, and the cross-section of the plate cavity is arranged in a rectangular structure.

[0007] Preferably, several plate cavities are all connected to the first annular cavity, the second annular cavity is connected to the first annular cavity, and the circular cavity is connected to the second annular cavity.

[0008] Preferably, a plurality of positioning plates are arranged in a circumferential array, the positioning plates are adapted to the plate cavity, one end of the positioning plate is inserted into the annular gap of the cable connector plug and is arranged in an arc shape, and the inner wall of the arc-shaped groove at one end of the positioning plate has a rubber layer, and the rubber layer at one end of the positioning plate contacts and abuts against the inner wall of the annular gap of the cable connector plug.

[0009] Preferably, the transmission assembly includes: A circular ring, which is rotatably mounted in the first annular cavity, has a spiral thread protrusion on one side; An external toothed ring is fixedly installed on the other side of the ring, located inside the second annular cavity.

[0010] Preferably, one side of each of the positioning plates has a number of threaded grooves that are adapted to the spiral thread protrusion on one side of the ring, and the number of threaded grooves on one side of the positioning plates are threadedly attached to the spiral thread protrusion on one side of the ring.

[0011] Preferably, the adjustment component includes: The gear rotates within a circular cavity and meshes with an external gear ring. A connecting shaft, one end of which is fixedly mounted on one side of the gear, and the other end of which extends to the outside of the second-layer outgoing connector housing; A disc, which is fixedly mounted on one end of the connecting shaft extending to the outer side of the second-layer outgoing connector housing.

[0012] In this application, after the external cable connector plug is inserted into the connector end of the second-layer outgoing connector housing through the connecting cavity, the installer holds the disc and rotates it, causing the connecting shaft to drive the gear to rotate, which in turn drives the ring and the external gear ring to rotate. This causes several positioning plates that are threadedly engaged with the spiral thread protrusion on one side of the ring to move synchronously towards the axis position, so that one end of the positioning plates is inserted into the annular gap of the cable connector plug, thereby limiting and fixing the position of the cable connector plug in the connecting cavity. This prevents the second-layer outgoing connector housing from becoming loose or even falling off, ensuring that the power transmission of the underwater transformer is not interrupted. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2This is a schematic diagram of the structure in plan view of this utility model; Figure 3 This is a schematic diagram of the first partial cross-section of the present invention; Figure 4 This is a schematic diagram of the second partial cross-section of the present invention; Figure 5 This is a side sectional view of the structure of this utility model; Figure 6 This is a schematic diagram of the structure of the circular cavity of this utility model in cross-section. Figure 7 This is a first-view structural schematic diagram of the transmission component of this utility model; Figure 8 This is a structural schematic diagram of the transmission component of this utility model from a second perspective; Figure 9 This is a partial cross-sectional view of the structure of this utility model from a first explosion perspective; Figure 10 This is a partial cross-sectional view of the structure of this utility model from a second explosion perspective; Figure 11 This is a schematic diagram of the structure of the first layer of the transformer housing of this utility model; Figure 12 This utility model Figure 11 A schematic diagram of the structure in plan view; Figure 13 This is a schematic diagram of the structure of the second layer of the transformer housing of this utility model; Figure 14 This utility model Figure 13 A schematic diagram of the structure in plan view.

[0014] In the diagram: 100, second-layer outgoing connector housing; 101, connecting cavity; 102, plate cavity; 103, first annular cavity; 104, second annular cavity; 105, circular cavity; 110, connector end; 200, cable connector plug; 201, annular gap; 300, positioning plate; 301, threaded groove; 310, rubber layer; 400, transmission assembly; 410, circular ring; 411, spiral thread protrusion; 420, external gear ring; 500, adjusting assembly; 510, gear; 520, connecting shaft; 530, disc; 1, transformer first-layer housing; 2, first compensation structure; 3, first-layer outgoing connector; 4, first-layer incoming connector; 5, first safety relief valve; 6, transformer second-layer housing; 7, second compensation structure; 8, connecting end; 9, second-layer incoming connector; 10, second safety relief valve; 11, air gap transformer. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Existing underwater transformers typically employ a double-layered outer casing for protection. The first and second outer casings are connected via a cable connector for power transmission. However, when the cable connector plug is inserted into the connecting cavity of the cable connector, the connection can easily become loose or even detach, causing an interruption in power transmission to the underwater transformer. To address this issue, this embodiment discloses an underwater transformer cable connector, which is located at the connecting end 8 on the top side of the second outer casing 6 of the transformer. Figure 12 and Figure 13 As shown, it is used for insertion and connection with an external cable connector plug 200, which has an annular gap 201, as... Figure 14 As shown; an underwater transformer output connector includes: as shown Figure 1 The second-layer outgoing connector housing 100 is shown; as... Figure 4 The figure shows several positioning plates 300, transmission components 400, and adjustment components 500.

[0017] like Figure 5 As shown, in order to facilitate insertion and connection with the external cable connector plug 200, the second-layer output connector housing 100 has a connection cavity 101, and the connection cavity 101 of the second-layer output connector housing 100 has a connector end 110. The connector end 110 is electrically connected to the power output terminal of the air gap transformer 11 in the second-layer housing 6 of the transformer. The external cable connector plug 200 is inserted into the connector end 110 through the connection cavity 101.

[0018] Continue as Figure 5As shown, in order to install several positioning plates 300, the inner wall of the connecting cavity 101 of the second-layer outgoing connector housing 100 has several plate cavities 102. The plate cavities 102 are arranged in a circumferential array, and the cross-section of the plate cavities 102 is rectangular. The several positioning plates 300 are respectively movably installed in the several plate cavities 102. The positioning plates 300 are arranged in a circumferential array, and the positioning plates 300 are adapted to the plate cavities 102. The positioning plates 300 are inserted into the annular space of the cable connector plug 200. One end of the gap 201 is arranged in an arc shape, and the inner wall of the arc groove at one end of the positioning plate 300 has a rubber layer 310. The rubber layer 310 at one end of the positioning plate 300 contacts and abuts against the inner wall of the annular gap 201 on the cable connector plug 200. Several positioning plates 300 are configured such that when they move toward the axial position, one end of several positioning plates 300 can be inserted into the annular gap 201 of the cable connector plug 200 to limit and fix the position of the cable connector plug 200 in the connection cavity 101.

[0019] Continue as Figure 5 As shown, in order to install the transmission assembly 400, the second-layer outlet connector housing 100 has a first annular cavity 103 and a second annular cavity 104 respectively. Several plate cavities 102 are connected to the first annular cavity 103, and the second annular cavity 104 is connected to the first annular cavity 103. The transmission assembly 400 is disposed in the first annular cavity 103 and the second annular cavity 104 of the second-layer outlet connector housing 100. The transmission assembly 400 is configured to synchronously drive several positioning plates 300 to adjust their positions when it rotates. The transmission assembly 400 includes: a ring 410 and an external gear ring 420; the ring 410 is rotatably mounted in the first annular cavity 103, and has a spiral thread protrusion 411 on one side; the external gear ring 420 is fixedly mounted on the other side of the ring 410, and is located in the second annular cavity 104. like Figure 8 , Figure 9 and Figure 10 As shown, each of the positioning plates 300 has a number of threaded grooves 301 on one side that are adapted to the spiral thread protrusion 411 on one side of the ring 410, and the number of threaded grooves 301 on one side of the positioning plates 300 are threadedly attached to the spiral thread protrusion 411 on one side of the ring 410.

[0020] like Figure 6 As shown, the second-layer outlet connector housing 100 has a circular cavity 105, which is connected to the second annular cavity 104; the adjustment component 500 is disposed in the circular cavity 105 of the second-layer outlet connector housing 100, and the transmission component 400 can be driven to rotate and adjust by the adjustment component 500. The adjustment assembly 500 includes a gear 510, a connecting shaft 520, and a disc 530. The gear 510 is rotatably disposed in the cavity 105 and meshes with the external gear ring 420. One end of the connecting shaft 520 is fixedly mounted on one side of the gear 510, and the other end extends to the outside of the second-layer outlet connector housing 100. The disc 530 is fixedly mounted on the end of the connecting shaft 520 that extends to the outside of the second-layer outlet connector housing 100.

[0021] In this application, after the external cable connector plug 200 is inserted into the connector end 110 of the second-layer output connector housing 100 through the connecting cavity 101, the installer holds the disc 530 and rotates the disc 530, causing the connecting shaft 520 to drive the gear 510 to rotate, which in turn drives the ring 410 and the external gear ring 420 to rotate. This causes several positioning plates 300 that are threadedly engaged with the spiral thread protrusion 411 on one side of the ring 410 to move synchronously towards the axial position, so that one end of the positioning plates 300 is inserted into the annular gap 201 of the cable connector plug 200, thereby limiting and fixing the position of the cable connector plug 200 in the connecting cavity 101. This prevents the second-layer output connector housing 100 from becoming loose or even falling off, ensuring that the power transmission of the underwater transformer is not interrupted.

[0022] In the specific implementation process, the first-layer inlet connector 4 is installed on the first-layer housing 1 of the transformer and sealed; the second-layer inlet connector 9 is connected to the first-layer inlet connector 4 via a cable, and the second-layer inlet connector 9 is installed on the second-layer housing 6 of the transformer and sealed; the second-layer inlet connector 9 is connected to the air gap transformer 11 via a cable, and the above constitute the inlet system.

[0023] The air gap transformer 11 is connected to the second-layer output connector housing 100 via a cable. The second-layer output connector housing 100 is installed on the second-layer housing 6 of the transformer and sealed. The second-layer output connector housing 100 is connected to the first-layer output connector 3 via a cable. The first-layer output connector 3 is installed on the first-layer housing 1 of the transformer and sealed. The above constitutes the output system. The input and output system is sealed with the connecting housing, realizing that the external seawater and the two internal chambers are independently isolated from each other, which provides a double-layer protection design for the air gap transformer 11.

[0024] The second compensation structure 7 is connected to the second shell 6 of the transformer through a pipeline, and it balances the pressure. The two ends of the second compensation structure 7 are connected to the second safety pressure relief valve 10. Both the first compensation structure 2 and the second compensation structure 7 adopt the compensation oil bladder design. Under normal circumstances, when the underwater transformer is used underwater, the oil bladder can balance the pressure difference between the inside and outside of the transformer. When the transformer is working, it will generate heat, which will cause the transformer oil to expand. The volume of the expanded transformer oil is accommodated by the second compensation structure 7, and the corresponding first compensation structure 2 accommodates the expanded volume. The volume of expansion that the first compensation structure 2 can accommodate is much larger than that of the second compensation structure 7.

[0025] When a sudden situation occurs, causing a surge in the transformer's heat generation, the volume of the second compensation structure 7 reaches saturation. At this point, the internal pressure increases. When the pressure reaches the pressure relief value of the second safety relief valve 10 connected to the second compensation structure 7, the second safety relief valve 10 opens to discharge transformer oil. The discharged transformer oil increases the pressure in the second shell 6 of the transformer. When the pressure reaches the opening pressure value of the second safety relief valve 10, the second safety relief valve 10 opens, and the transformer oil flows into the second compensation structure 7 to be contained. When the temperature decreases, the internal pressure drops. Under the action of the pressure difference, the reverse second safety relief valve 10 opens, and the transformer oil flows back into the second shell 6 of the transformer, thereby achieving pressure balance inside the transformer.

[0026] When the volume of the first compensation structure 2 reaches saturation, the internal pressure increases, and the first safety relief valve 5, which is connected to the first layer of the transformer shell 1, opens, allowing the transformer oil to be directly discharged into the seawater to relieve pressure and protect the internal components.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An underwater transformer outlet connector, which is arranged at a connection end (8) on the top side of a second layer housing (6) of a transformer, for plug-in connection with an external cable connector plug (200) having an annular gap (201) on it, characterized in that include: The second-layer cable connector housing (100) has a connecting cavity (101) therein, and the connecting cavity (101) of the second-layer cable connector housing (100) has a connector end (110) so that the external cable connector plug (200) is inserted into the connector end (110) through the connecting cavity (101); the inner wall of the connecting cavity (101) of the second-layer cable connector housing (100) has a plurality of plate cavities (102), and the second-layer cable connector housing (100) has a first annular cavity (103), a second annular cavity (104) and a circular cavity (105) respectively. Several positioning plates (300) are movably installed in several plate cavities (102). The positioning plates (300) are configured such that when they move toward the axial position, one end of each positioning plate (300) can be inserted into the annular gap (201) of the cable connector plug (200) to limit and fix the position of the cable connector plug (200) in the connection cavity (101). A transmission assembly (400) is disposed in the first annular cavity (103) and the second annular cavity (104) of the second layer outlet connector housing (100). The transmission assembly (400) is configured to synchronously drive several positioning plates (300) for position adjustment when it rotates. An adjustment component (500) is disposed in the cavity (105) of the second-layer outlet connector housing (100). The adjustment component (500) can drive the transmission component (400) to rotate and adjust.

2. The underwater transformer outlet connector of claim 1, wherein, The second layer outgoing connector housing (100) has several cavities (102) arranged in a circular array, and the cross-section of the cavity (102) is set in a rectangular structure.

3. The underwater transformer outlet connector of claim 2, wherein, Several plate cavities (102) are connected to the first annular cavity (103), the second annular cavity (104) is connected to the first annular cavity (103), and the circular cavity (105) is connected to the second annular cavity (104).

4. The underwater transformer outlet connector of claim 3, wherein, Several positioning plates (300) are arranged in a circular array. The positioning plates (300) are adapted to the plate cavity (102). One end of the positioning plate (300) is inserted into the annular gap (201) on the cable connector plug (200) and is arranged in an arc shape. The inner wall of the arc groove at one end of the positioning plate (300) has a rubber layer (310). The rubber layer (310) at one end of the positioning plate (300) contacts and abuts against the inner wall of the annular gap (201) on the cable connector plug (200).

5. The underwater transformer output connector according to claim 1, characterized in that, The transmission assembly (400) includes: A ring (410) is rotatably mounted in a first annular cavity (103) and has a spiral thread protrusion (411) on one side. An external toothed ring (420) is fixedly mounted on the other side of the ring (410) and is located in the second annular cavity (104).

6. The underwater transformer output connector according to claim 5, characterized in that, Each of the positioning plates (300) has a number of threaded grooves (301) on one side that are adapted to the spiral thread protrusion (411) on one side of the ring (410), and the number of threaded grooves (301) on one side of the positioning plates (300) are threadedly attached to the spiral thread protrusion (411) on one side of the ring (410).

7. The underwater transformer output connector according to claim 5, characterized in that, The adjustment component (500) includes: The gear (510) is rotatably disposed in the circular cavity (105) and meshes with the external gear ring (420); A connecting shaft (520) has one end fixedly mounted on one side of the gear (510) and the other end extending to the outside of the second-layer outgoing connector housing (100); A disc (530) is fixedly mounted on one end of the connecting shaft (520) extending outside the second-layer outlet connector housing (100); 8. A transformer, characterized in that, include: An underwater transformer output connector as described in any one of claims 1-7.

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