High-position oil injection oil cup for oil medium pulse formation line

Abstract

The invention discloses a high-position oil injection oil cup for an oil medium pulse forming line, and solves the problems that the pressure intensity of gas contained in oil is larger and larger, bubbles are more difficult to float upwards and bubbles are not easy to remove along with the gradual rising of the liquid level in the traditional low-position vacuumizing oil injection equipment. Comprising an oil cup assembly and an oil cup cover which are connected in a sealed mode to form an oil injection cavity. The bottom in the oil cup assembly is connected with an overflow cover; array holes are formed in the overflow cover along the circumference; an oil filling hole is formed in the bottom of the oil cup assembly in the overflow cover, the bottom of the oil cup assembly is connected with a line-forming outer cylinder with an oil filling port through a connecting bolt, and the oil filling hole is opposite to the oil filling port; an oil injection pipe penetrates through the oil cup cover and is arranged between the overflow cover and the oil cup assembly; the other end of the oiling pipe is connected with an oiling control pipe; when the height of the oil medium reaches the position of the array hole, the oil medium enters the overflow cover and then enters the line forming outer cylinder through the oil injection hole and the oil injection port.

Description

Technical Field

[0001] The present invention relates to oil injection equipment, and particularly to a high-position oil injection cup for an oil medium pulse forming line. Background Art

[0002] The Tesla type pulse power source integrates the pulse forming line and the Tesla transformer. Transformer oil is used as an insulating medium and filled inside the pulse forming line, which has obvious advantages such as simple principle, compact structure, and high step-up efficiency. As an important medium for insulation and cooling of the Tesla type pulse power source, the performance of transformer oil directly affects whether the pulse power source can operate safely and reliably under the designed power index.

[0003] Bubbles are an important factor affecting the performance of transformer oil. When there are bubbles in transformer oil, since the dielectric constant of gas is less than that of transformer oil, the electric field strength in the bubbles is high, while the insulation strength of gas is much lower than that of transformer oil. Therefore, partial discharge is likely to occur in the bubbles, causing the deterioration of transformer oil and leading to transformer failures. However, in traditional low-position vacuum oil injection equipment, as the liquid level gradually rises, the pressure of the gas contained in the oil becomes greater and greater, making it more difficult for the bubbles to float up, which is not conducive to the removal of bubbles. Summary of the Invention

[0004] The object of the present invention is to solve the problem that in traditional low-position vacuum oil injection equipment, as the liquid level gradually rises, the pressure of the gas contained in the oil becomes greater and greater, making it more difficult for the bubbles to float up and not conducive to the removal of bubbles, and to provide a high-position oil injection cup for an oil medium pulse forming line.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-position oil injection cup for an oil medium pulse forming line, characterized in that: it includes an oil cup assembly and an oil cup cover, and the oil cup assembly is hermetically connected to the oil cup cover to form an oil injection cavity;

[0007] An overflow cover is connected to the inner bottom of the oil cup assembly, and array holes are opened along the circumference of the upper edge of the overflow cover; an oil injection hole is opened at the bottom of the oil cup assembly inside the overflow cover, and a plurality of connecting bolts are connected to the bottom of the oil cup assembly. The plurality of connecting bolts are used to connect the outer cylinder of the forming line provided with an oil injection port, and the oil injection hole is arranged opposite to the oil injection port;

[0008] An oil injection pipe is inserted through the oil cup cover. One end of the oil injection pipe located in the oil injection cavity extends to near the upper end of the overflow cover and is arranged between the overflow cover and the side wall of the oil cup assembly; the other end of the oil injection pipe is connected to an oil injection control pipe fitting. Oil medium is input through the oil injection control pipe fitting and the oil injection pipe to the position between the overflow cover and the oil cup assembly. When the height of the oil medium reaches the position of the array of holes, the oil medium enters the overflow cover through the array of holes, and then enters the line-forming outer cylinder through the oil injection holes and the oil injection ports. In the present invention, an overflow cover and overflow holes are provided, which can extend the residence time of the oil medium in a vacuum environment to achieve complete separation of oil and gas.

[0009] A short pipe b is also connected to the oil cup cover. One end of the short pipe b communicates with the oil injection cavity, and the other end is located outside the oil injection cavity and is connected to an exhaust assembly. The gas in the oil injection cavity is discharged through the exhaust assembly and the short pipe b.

[0010] Further, the oil cup assembly includes an oil cup base with a groove formed inside. An observation cover is sealingly connected to the oil cup base, and the observation cover is sealingly connected to the oil cup cover; wherein, the observation cover is used to observe the state of bubbles and oil medium in the oil injection cavity.

[0011] The overflow cover is fixedly connected to the groove of the oil cup base.

[0012] An oil injection hole is formed at the bottom of the oil cup base inside the overflow cover, and a plurality of connecting bolts are evenly connected to the edge of the bottom of the oil cup base near the oil injection hole.

[0013] Further, the oil injection pipe includes a short pipe a and a stainless steel long pipe.

[0014] The short pipe a penetrates through the oil cup cover, one end is connected to the stainless steel long pipe extending into the oil injection cavity, and the other end is connected to the oil injection control pipe fitting; the stainless steel long pipe extends to near the upper end of the overflow cover and is arranged between the overflow cover and the side wall of the oil cup assembly.

[0015] Further, the oil injection control pipe fitting includes a right-angle ferrule joint and a ball valve c.

[0016] One end of the right-angle ferrule joint is connected to the short pipe a, and the other end is connected to the ball valve c. The ball valve c is used to connect the oil transmission pipeline and control the oil flow rate.

[0017] The outer wall of the right-angle ferrule joint is fixedly connected to the oil cup cover.

[0018] Further, the exhaust assembly includes a KF25 joint a, a ball valve a, a three-way joint, a ball valve b, and a KF25 joint b.

[0019] The first end of the three-way joint is connected to the short pipe b, the second end is sequentially connected to the ball valve a and the KF25 joint a, and the third end is sequentially connected to the ball valve b and the KF25 joint b; the KF25 joint a is used to connect the vacuum pump pipeline, and the KF25 joint b is used to connect the vacuum gauge.

[0020] Furthermore, it also includes an oil cup cover pressing plate and an observation window. The observation window is made of plexiglass, which is convenient for observing the position change of the oil medium inside the overflow cover.

[0021] A window is opened on the oil cup cover at the position opposite to the overflow cover. The observation window is arranged at the window position of the oil cup cover. The oil cup cover pressing plate, the observation window, and the oil cup cover are connected by screws.

[0022] Furthermore, a sealing groove a is opened on the outer edge of the window on the oil cup cover. A top observation window sealing ring is arranged in the sealing groove a. The top observation window sealing ring is used to seal the oil cup cover and the observation window.

[0023] Furthermore, a sealing groove b is opened on the outer periphery of the upper end of the observation cover, and a sealing groove c is opened on the outer periphery of the lower end. A circumferential observation window upper sealing ring is arranged in the sealing groove b, and a circumferential observation window lower sealing ring is arranged in the sealing groove c.

[0024] The circumferential observation window upper sealing ring is used to seal the oil cup cover and the upper end of the observation cover.

[0025] The circumferential observation window lower sealing ring is used to seal the oil cup base and the lower end of the observation cover.

[0026] Furthermore, a boss is integrally formed and connected to the outer wall of the oil cup base along the circumference. A plurality of upper and lower fastening bolts are connected at equal intervals between the oil cup cover and the boss.

[0027] Furthermore, a sealing groove d is opened on the outer ring around the connecting bolt on the oil cup base. A sealing ring is arranged in the sealing groove d. The sealing ring is used to seal the oil cup base and the outer cylinder of the travel line.

[0028] The beneficial effects of the present invention:

[0029] 1. A high-position oil injection oil cup for an oil medium pulse forming line according to the present invention enables the oil medium to fall between the oil cup assembly and the overflow cover through the oil injection pipe. When the liquid level of the oil medium reaches the position of the array holes, the oil medium overflows into the overflow cover, forming a uniform oil film flowing down on the inner surface of the overflow cover and entering the forming line cavity along the oil injection holes. This structure can fully increase the vacuum interface of the oil medium, avoid the bondage of liquid depth pressure, extend the residence time of the oil medium in the vacuum environment, achieve complete separation of oil and gas, greatly improve the pressure resistance strength of the oil quality, and thus improve the power of the oil medium pulse forming line.

[0030] 2. The high-position oil injection cup for the oil dielectric pulse forming line provided by the present invention has the short tube b always at the highest vacuum position in the cavity, which is beneficial to the precipitation of gas and can fully reduce the bubble content in the oil.

[0031] 3. The high-position oil injection cup for the oil dielectric pulse forming line provided by the present invention performs high-vacuum degassing. Through the degassing structure of the large-area oil film overflowing through the overflow cover in the interlayer, during the interaction between the oil film and the vacuum environment, the influence of the self-pressure of the oil dielectric on the bubbles therein is avoided, and the force for the bubbles in the oil dielectric to break away from the oil dielectric is almost only buoyancy. Description of the Drawings

[0032] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the high-position oil injection cup for the oil dielectric pulse forming line of the present invention;

[0033] Figure 2 is a sectional view of an embodiment of the high-position oil injection cup for the oil dielectric pulse forming line of the present invention;

[0034] Figure 3 is a schematic diagram of the use state of an embodiment of the high-position oil injection cup for the oil dielectric pulse forming line of the present invention.

[0035] In the figure, 1 - KF25 joint a; 2 - ball valve a; 3 - tee joint; 4 - ball valve b; 5 - KF25 joint b; 6 - oil cup cover; 7 - observation cover; 8 - upper and lower fastening bolts; 9 - oil cup base; 10 - oil cup cover pressing plate; 11 - right-angle ferrule joint; 12 - ball valve c; 13 - observation window; 14 - high-position oil injection cup for the oil dielectric pulse forming line; 15 - outer cylinder of the forming line; 16 - top observation window sealing ring; 17 - short tube b; 18 - connecting bolt; 19 - sealing ring; 20 - overflow cover; 21 - array of holes; 22 - lower sealing ring of the circumferential observation window; 23 - stainless steel long tube; 24 - upper sealing ring of the circumferential observation window; 25 - short tube a. Detailed Embodiments

[0036] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0037] In this embodiment, the high-position oil injection cup for the oil dielectric pulse forming line realizes oil-gas separation during oil injection through low vacuum + large-area oil film degassing; as Figure 1As shown, it includes an oil cup base 9 with a groove formed inside. An observation cover 7 is sealingly connected to the oil cup base 9, and an oil cup lid 6 is sealingly connected to the observation cover 7. The oil cup base 9, the observation cover 7, and the oil cup lid 6 are sequentially and sealingly connected to form an oil injection cavity. In this embodiment, the observation cover 7 is made of plexiglass.

[0038] In this embodiment, as Figure 2 shown, a boss is integrally formed and connected to the outer wall of the oil cup base 9 along the circumferential direction. A plurality of upper and lower fastening bolts 8 are connected at equal intervals between the oil cup lid 6 and the boss. The oil cup base 9, the oil cup lid 6 are tightly connected to both ends of the observation cover 7 through the upper and lower fastening bolts 8. Using the upper and lower fastening bolts 8 facilitates the disassembly and installation of the oil cup base 9, the oil cup lid 6, and the observation cover 7, and at the same time facilitates the adjustment of the sealing performance between the structures.

[0039] In this embodiment, an overflow cover 20 is fixedly connected to the groove of the oil cup base 9, and array holes 21 are formed in a circular pattern on the upper edge of the overflow cover 20; an oil injection hole is formed at the bottom of the oil cup base 9 inside the overflow cover 20. A plurality of 8*M8 connecting bolts 18 are evenly connected to the edge of the bottom of the oil cup base 9 near the oil injection hole. The plurality of connecting bolts 18 are used to connect an out-of-line cylinder 15 with an oil injection port, and the oil injection hole and the oil injection port are arranged opposite to each other. The oil medium in the overflow cover 20 is input into the out-of-line cylinder 15 through the oil injection hole.

[0040] In order to improve the sealing performance of the oil injection cavity and facilitate the separation of air bubbles in the oil medium, in this embodiment, a sealing groove b is formed on the outer periphery of the upper end of the observation cover 7, and a sealing groove c is formed on the outer periphery of the lower end. A circumferential upper observation window sealing ring 24 is arranged in the sealing groove b, and a circumferential lower observation window sealing ring 22 is arranged in the sealing groove c; the circumferential upper observation window sealing ring 24 is used to seal the upper end of the oil cup lid 6 and the observation cover 7; the circumferential lower observation window sealing ring 22 is used to seal the lower end of the oil cup base 9 and the observation cover 7.

[0041] In this embodiment, a sealing groove d is formed on the outer circle of the oil cup base 9 around the connecting bolts 18, and a sealing ring 19 is arranged in the sealing groove d. The sealing ring 19 is used to seal the oil cup base 9 and the out-of-line cylinder 15.

[0042] In this embodiment, the positional relationship between the high-level oil injection oil cup 14 for the oil medium pulse forming line and the out-of-line cylinder 15 is as Figure 3 shown.

[0043] In this embodiment, a window is formed inside the oil cup lid 6 opposite to the inside of the overflow cover 20. An observation window 13 is arranged at the window position of the oil cup lid 6. The oil cup lid pressing plate 10, the observation window 13, and the oil cup lid 6 are connected by screws. The oil cup lid pressing plate 10 can protect the observation window 13.

[0044] In this embodiment, a sealing groove a is formed on the outer edge of the oil cup cover 6 at the window. A top observation window sealing ring 16 is arranged in the sealing groove a. The top observation window sealing ring 16 is used to seal the oil cup cover 6 and the observation window 13, facilitating the observation of the change of the oil medium liquid level in the overflow cover 20 through the top observation window sealing ring 16.

[0045] A short pipe a25 is inserted through the oil cup cover 6, and one end extending into the oil injection cavity is connected to a stainless steel long pipe 23. The stainless steel long pipe 23 extends to the upper end of the overflow cover 20 and is arranged between the overflow cover 20 and the oil cup base 9; the other end of the short pipe a25 is connected to one end of a right-angle ferrule joint 11, and the other end is connected to a ball valve c12. The ball valve c12 is used to connect the oil pipeline and control the oil flow; the outer wall of the right-angle ferrule joint 11 is fixedly connected to the oil cup cover 6.

[0046] A short pipe b17 is also connected to the oil cup cover 6. One end of the short pipe b17 communicates with the oil injection cavity, and the other end is located outside the oil injection cavity and is connected to the first end of a tee joint 3. The second end of the tee joint 3 is sequentially connected to a ball valve a2 and a KF25 joint a1, and the third end is sequentially connected to a ball valve b4 and a KF25 joint b5; the KF25 joint a1 is used to connect the vacuum pump pipeline, and the KF25 joint b5 is used to connect the vacuum gauge.

[0047] In this embodiment, the short pipe b17 is always at the highest vacuum in the cavity, which is beneficial to the precipitation of gas and can fully reduce the bubble content in the oil.

[0048] During use, connect the ball valve c12 to the oil pipeline, the KF25 joint b5 to the vacuum gauge, and the ball valve a2 to the KF25 joint a1; input the oil medium into the oil pipeline. The oil medium passes through the short pipe a25 and the stainless steel long pipe 23 and falls between the oil cup base 9 and the overflow cover 20. When the liquid level of the oil medium reaches the position of the array holes 21, the oil medium overflows into the overflow cover 20 and forms a uniform oil film flowing down on the inner surface of the overflow cover 20, and enters the line outer cylinder 15 along the oil injection holes; at the same time, connect the vacuum pump through the vacuum pump pipeline to evacuate the oil injection cavity. When a uniform oil film flows down on the inner surface of the overflow cover 20, it can fully increase the vacuum interface of the oil medium, avoid the binding of the depth pressure of the oil medium, lengthen the residence time of the oil medium in the vacuum environment, achieve complete separation of oil and gas, greatly improve the breakdown voltage strength of the oil, and then increase the power of the oil medium pulse forming line; measure the vacuum degree in the oil injection cavity through the vacuum gauge connected to the KF25 joint b5 to facilitate the reasonable control of the air pressure range in the oil injection cavity.

[0049] The above is only the specific implementation manner of the present invention and the effects of the relevant specific implementation manners, but the protection scope of the present invention is not limited thereto. Any change or replacement within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A high-level oil injection cup for an oil medium pulse forming line, characterized in that: It includes an oil cup assembly and an oil cup cover (6), and the oil cup assembly is hermetically connected to the oil cup cover (6) to form an oil injection cavity; An overflow cover (20) is connected to the inner bottom of the oil cup assembly. Array holes (21) are formed along the circumference on the overflow cover (20); an oil injection hole is formed at the bottom of the oil cup assembly inside the overflow cover (20). Multiple connecting bolts (18) are connected to the bottom of the oil cup assembly, and the multiple connecting bolts (18) are used to connect the forming line outer cylinder (15) provided with an oil injection port, and the oil injection hole is arranged opposite to the oil injection port; An oil injection pipe is inserted through the oil cup cover (6). One end of the oil injection pipe located in the oil injection cavity extends to be close to the upper end of the overflow cover (20) and is arranged between the overflow cover (20) and the side wall of the oil cup assembly; the other end of the oil injection pipe is connected to an oil injection control pipe fitting; A short pipe b (17) is also connected to the oil cup cover (6). One end of the short pipe b (17) communicates with the oil injection cavity, and the other end is located outside the oil injection cavity and is connected to an exhaust assembly.

2. The high-position oil injection oil cup for an oil medium pulse forming line according to claim 1, characterized in that: The oil cup assembly includes an oil cup base (9) with a groove formed inside. An observation cover (7) is hermetically connected to the oil cup base (9), and the observation cover (7) is hermetically connected to the oil cup cover (6); The overflow cover (20) is fixedly connected to the groove of the oil cup base (9); The oil injection hole is formed at the bottom of the oil cup base (9) inside the overflow cover (20), and multiple connecting bolts (18) are evenly connected to the edge of the bottom of the oil cup base (9) close to the oil injection hole.

3. The high-position oil injection oil cup for an oil medium pulse forming line according to claim 1, characterized in that: The oil injection pipe includes a short pipe a (25) and a stainless steel long pipe (23); The short pipe a (25) is inserted through the oil cup cover (6), and one end is connected to the stainless steel long pipe (23) extending into the oil injection cavity, and the other end is connected to an oil injection control pipe fitting; the stainless steel long pipe (23) extends to be close to the upper end of the overflow cover (20) and is arranged between the overflow cover (20) and the side wall of the oil cup assembly.

4. The high-position oil injection oil cup for an oil medium pulse forming line according to claim 3, characterized in that: The oil injection control pipe fitting includes a right-angle ferrule joint (11) and a ball valve c (12); One end of the right-angle ferrule joint (11) is connected to the short pipe a (25), and the other end is connected to the ball valve c (12). The ball valve c (12) is used to connect an oil transmission pipeline and control the oil flow rate; The outer wall of the right-angle ferrule joint (11) is fixedly connected to the oil cup cover (6).

5. The high-level oil injection cup for an oil medium pulse forming line according to claim 1, characterized in that: The exhaust assembly includes a KF25 joint a (1), a ball valve a (2), a tee joint (3), a ball valve b (4), and a KF25 joint b (5); The first end of the tee joint (3) is connected to the short pipe b (17), the second end is sequentially connected to the ball valve a (2) and the KF25 joint a (1), and the third end is sequentially connected to the ball valve b (4) and the KF25 joint b (5); the KF25 joint a (1) is used to connect a vacuum pump pipeline, and the KF25 joint b (5) is used to connect a vacuum gauge.

6. The high-level oil injection oil cup for an oil medium pulse forming line according to claim 1, characterized in that: It also includes an oil cup cover pressing plate (10) and an observation window (13); A window is formed at the position of the oil cup cover (6) opposite to the overflow cover (20). The observation window (13) is arranged at the window position of the oil cup cover (6), and the oil cup cover pressing plate (10), the observation window (13), and the oil cup cover (6) are connected by screws.

7. The high-position oil injection oil cup for an oil medium pulse forming line according to claim 6, characterized in that: A sealing groove a is formed on the outer edge of the oil cup cover (6) at the window, and a top observation window sealing ring (16) is arranged in the sealing groove a. The top observation window sealing ring (16) is used to seal the oil cup cover (6) and the observation window (13).

8. The high-position oil injection oil cup for an oil medium pulse forming line according to claim 2, characterized in that: A sealing groove b is formed on the outer periphery of the upper end of the observation cover (7), and a sealing groove c is formed on the outer periphery of the lower end. A circumferential upper observation window sealing ring (24) is arranged in the sealing groove b, and a circumferential lower observation window sealing ring (22) is arranged in the sealing groove c; The circumferential upper observation window sealing ring (24) is used to seal the upper end of the oil cup cover (6) and the observation cover (7); The circumferential lower observation window sealing ring (22) is used to seal the lower end of the oil cup base (9) and the observation cover (7).

9. The high-level oil injection cup for the oil medium pulse forming line according to claim 2, characterized in that: A boss is integrally formed and connected to the outer wall of the oil cup base (9) in the circumferential direction, and a plurality of upper and lower fastening bolts (8) are connected at equal intervals between the oil cup cover (6) and the boss.

10. The high-level oil injection oil cup for an oil medium pulse forming line according to claim 1, characterized in that: A sealing groove d is formed on the outer ring of the oil cup base (9) around the connecting bolt (18), and a sealing ring (19) is arranged in the sealing groove d. The sealing ring (19) is used to seal the oil cup base (9) and the outer cylinder of the travel line (15).

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