Bent pipe assembly of oil tank oil delivery pipe

Abstract

A bent pipe assembly of an oil tank oil conveying pipe comprises a bent pipe and straight pipes arranged at the two ends of the bent pipe, first external threads are arranged at the two ends of the bent pipe, third external threads are arranged at the ends, close to the bent pipe, of the straight pipes, the bent pipe and the straight pipes are detachably connected together through connector assemblies, and the connector assemblies comprise the male connector assembly and the female connector assembly. The male connector assembly is in threaded connection with the first external thread of the bent pipe, and the female connector assembly is in threaded connection with the third external thread of the straight pipe. According to the bent pipe assembly of the oil tank oil conveying pipe, through the arranged connector assembly, the bent pipe and the straight pipe can be rapidly assembled and disassembled, and the maintenance efficiency of the oil tank oil conveying pipe is improved; through the opening and closing mechanism arranged in the connector assembly, oil-carrying maintenance of the oil conveying pipe can be achieved, and maintenance convenience of the oil conveying pipe is improved; and four through grooves are formed in the side walls of the two sides of the movable sleeve correspondingly, so that the oil passing efficiency and reliability of the oil conveying pipe are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer oil tanks, in particular to a bent pipe assembly of an oil tank oil delivery pipe. Background Art

[0002] The transformer oil tank serves as the outer shell of the transformer, protecting the internal iron core and coil from the influence of the external environment. The oil tank is filled with transformer oil, which not only acts as an insulator to prevent current leakage, but also acts as a heat dissipator to help the transformer dissipate heat during operation. The oil tank design includes an oil pillow, which can automatically adjust the oil level according to changes in oil temperature, maintain an appropriate amount of oil in the tank, and slow down the deterioration of the oil. The oil tank body and the oil pillow are connected through the oil tank oil pipe.

[0003] However, the existing fuel tank oil pipeline is usually made of bent steel pipes. Once the bent oil pipeline is damaged or needs to be replaced, the entire pipeline needs to be replaced, which is difficult and time-consuming to repair and replace. Therefore, it is of great significance to study a new type of bent pipe assembly for the fuel tank oil pipeline and solve the above problems to improve the maintenance efficiency of the fuel tank oil pipeline. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a bent pipe assembly of an oil tank oil pipe. The bent pipe assembly of the oil tank oil pipe realizes rapid installation and disassembly of the bent pipe and the straight pipe through the provided joint assembly, thereby improving the maintenance efficiency of the oil tank oil pipe. Through the opening and closing mechanism provided in the joint assembly, when the joint assembly is in a separated state, the male joint assembly can close the oil stored in the bent pipe, and the female joint assembly can close the oil stored in the straight pipe, thereby realizing oil maintenance in the oil pipe and improving the convenience of oil pipe maintenance. By respectively providing four through grooves on the side walls on both sides of the movable sleeve, when the joint assembly is in a connected state, the oil can smoothly pass through the joint assembly, thereby improving the oil passing efficiency and reliability of the oil pipe.

[0005] The technical solution of the utility model is as follows:

[0006] A bent pipe assembly of an oil tank oil delivery pipe comprises a bent pipe and straight pipes arranged at both ends of the bent pipe, the ends of the bent pipe are provided with a first external thread, an end of the straight pipe close to the bent pipe is provided with a third external thread, and the bent pipe and the straight pipe are detachably connected together through a joint assembly;

[0007] The joint assembly includes a male joint assembly and a female joint assembly, the male joint assembly includes a male joint, the male joint is coaxially provided with a first threaded hole and a third hole from right to left, the outer wall of the male joint is provided with a second external thread, the first threaded hole is threadedly connected to the first external thread of the bent pipe, the female joint assembly includes a threaded sleeve, a female joint and a sealing member, the threaded sleeve is coaxially provided with a second threaded hole and a fourth hole from right to left, the outer wall of the female joint is coaxially provided with a third shaft segment, a fourth shaft segment and a fifth shaft segment from right to left, the right end face of the female joint is provided with a sealing groove, the inner wall is coaxially provided with a fifth hole and a third threaded hole from right to left, the threaded sleeve is sleeved on the fifth shaft segment of the female joint through the fourth hole, the second threaded hole can be threadably matched with the second external thread, the left end face of the second threaded hole can contact the left end face of the fourth shaft segment, the sealing member is installed in the sealing groove, the right end face of the third shaft segment of the female joint can contact the right end face of the third hole of the male joint, and the third threaded hole is threadedly connected to the third external thread of the straight pipe.

[0008] In order to make the flow state of oil between the curved pipe and the straight pipe more stable and reduce the turbulence and resistance of the oil, the inner diameters of the curved pipe and the straight pipe are equal.

[0009] To facilitate installation, the first external thread and the third external thread have the same specifications.

[0010] In order to realize the maintenance of the oil pipeline with oil, the convenience of the maintenance of the oil pipeline is improved, the joint assembly also includes a through-closing mechanism, which includes a first straight hole arranged at the end of the elbow, a first hole and a second hole arranged between the first threaded hole and the third hole, a first elastomer, a first sealing ball, a movable sleeve, a second elastomer, a second sealing ball, and a second straight hole arranged at one end of the straight pipe close to the elbow, the inner diameter of the first hole is larger than the second hole and smaller than the inner diameter of the first threaded hole, the first elastomer is arranged in the first straight hole, the first sealing ball is arranged in the first threaded hole, and the first sealing ball is in sealing contact with the first hole under the elastic force of the first elastomer, the movable sleeve includes a first shaft section and a second shaft section, and a plurality of through grooves are arranged on the side walls on both sides of the movable sleeve, the first shaft section is movably matched with the first hole gap, the second shaft section is matched with the second hole gap, the left end face of the first shaft section can be in contact with the left end face of the first hole, the second elastomer is arranged in the second straight hole, the second sealing ball is arranged in the third threaded hole, and the second sealing ball is in sealing contact with the fifth hole under the elastic force of the second elastomer.

[0011] In order to improve the oil passing efficiency and reliability of the oil pipeline, four through grooves are respectively arranged on the side walls of both sides of the movable sleeve.

[0012] The through grooves are evenly distributed.

[0013] The first elastic body and the second elastic body are both compression springs.

[0014] In order to keep the surface smooth for a long time, prevent rust and oxidation, and extend the service life of parts, the first sealing ball and the second sealing ball are both made of 304 stainless steel.

[0015] The first sealing ball and the second sealing ball are both hollow spheres.

[0016] The sealing element is an O-ring.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model discloses a bent pipe assembly for a fuel tank oil delivery pipe, which realizes the rapid installation and removal of the bent pipe and the straight pipe through the provided joint assembly, thereby improving the maintenance efficiency of the fuel tank oil delivery pipe.

[0019] 2. The utility model discloses a bent pipe assembly for an oil tank oil pipeline. Through the opening and closing mechanism arranged in the joint assembly, when the joint assembly is in a separated state, the male joint assembly can close the oil stored in the bent pipe, and the female joint assembly can close the oil stored in the straight pipe, thereby realizing pipeline maintenance with oil, and improving the convenience of oil pipeline maintenance.

[0020] 3. The utility model discloses a bent pipe assembly for an oil tank oil delivery pipe, which has four through grooves respectively arranged on the side walls of the movable sleeve, so that when the joint assembly is in a separated state, oil can smoothly pass through the joint assembly, thereby improving the oil passing efficiency and reliability of the oil delivery pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0022] In the attached picture:

[0023] Figure 1 It is a cross-sectional view of a bent pipe assembly of a fuel tank oil delivery pipe according to an embodiment of the utility model;

[0024] Figure 2 for Figure 1 An enlarged schematic diagram of the middle elbow assembly at position I in a separated state;

[0025] Figure 3 for Figure 1 An enlarged schematic diagram of the connection state of the middle elbow assembly at position Ⅰ;

[0026] Figure 4 A cross-sectional view of a bend pipe of a bend pipe assembly of a fuel tank oil delivery pipe according to an embodiment of the utility model;

[0027] Figure 5 A cross-sectional view of a male joint of an elbow assembly of an oil tank oil delivery pipe according to an embodiment of the utility model;

[0028] Figure 6 It is a cross-sectional view of a moving sleeve of a bend pipe assembly of an oil tank oil delivery pipe according to an embodiment of the utility model;

[0029] Figure 7 It is a cross-sectional view of a threaded sleeve of a bend pipe assembly of an oil tank oil delivery pipe according to an embodiment of the utility model;

[0030] Figure 8 It is a cross-sectional view of a female joint of a bend pipe assembly of an oil tank oil delivery pipe according to an embodiment of the utility model;

[0031] Fig. 9 The utility model is a straight pipe cross-sectional view of a bent pipe assembly of an oil tank oil delivery pipe according to an embodiment of the utility model.

[0032] The components represented by the reference numerals in the figure are:

[0033] The utility model: 1. elbow, 1a. first external thread, 1b. first straight hole, 2. male joint assembly, 2a. male joint, 2a1. first threaded hole, 2a2. first hole, 2a3. second hole, 2a4. third hole, 2a5. second external thread, 2b. first elastomer, 2c. first sealing ball, 2d. movable sleeve, 2d1. first shaft section, 2d2. second shaft section, 2d3. through groove, 3. female joint assembly, 3a. threaded sleeve, 3a1. second threaded hole, 3a2. fourth hole, 3b. female joint, 3b1. third shaft section, 3b2. fourth shaft section, 3b3. fifth shaft section, 3b4. sealing groove, 3b5. fifth hole, 3b6. third threaded hole, 3c. second elastomer, 3d. second sealing ball, 3e. sealing member, 4. straight pipe, 4a. third external thread, 4b. second straight hole. DETAILED DESCRIPTION

[0034] like Figure 1 , Figure 4 and Fig. 9As shown, a pipe bend assembly of a fuel tank oil delivery pipe comprises a pipe bend 1 and a straight pipe 4 arranged at both ends of the pipe bend 1, wherein the ends of the pipe bend 1 are provided with a first external thread 1a, and the end of the straight pipe 4 close to the pipe bend 1 is provided with a third external thread 4a. Preferably, the first external thread 1a and the third external thread 4a are of equal specifications. Using the same thread standard can make the pipeline system more unified, convenient for design, installation and maintenance, and can more flexibly layout the oil delivery pipe system to meet different construction requirements, which can reduce procurement and inventory costs, and also reduce maintenance and replacement costs, thereby improving work efficiency. The working efficiency and construction quality are improved; the elbow 1 and the straight pipe 4 are detachably connected together through the joint assembly. Preferably, the inner diameters of the elbow 1 and the straight pipe 4 are equal; due to the equal inner diameters, the oil flow state is more stable during the conversion between the elbow and the straight pipe, which reduces the turbulence and resistance of the oil, and is conducive to improving the oil delivery efficiency. The pressure loss of the elbow and the straight pipe with equal inner diameters during the oil flow process is relatively small, which reduces the waste of energy and improves the energy efficiency of the system. The connection between the elbow and the straight pipe with equal inner diameters is more convenient, which reduces the complexity of design and installation, and reduces the cost and difficulty of maintenance;

[0035] like Figures 1 to 9As shown, the joint assembly includes a male joint assembly 2 and a female joint assembly 3, the male joint assembly 2 includes a male joint 2a, the male joint 2a is coaxially provided with a first threaded hole 2a1 and a third hole 2a4 from right to left, the outer wall of the male joint 2a is provided with a second external thread 2a5, the first threaded hole 2a1 is threadedly connected with the first external thread 1a of the elbow 1, the female joint assembly 3 includes a threaded sleeve 3a, a female joint 3b and a sealing member 3e, the threaded sleeve 3a is coaxially provided with a second threaded hole 3a1 and a fourth hole 3a2 from right to left, the outer wall of the female joint 3b is coaxially provided with a third shaft section 3b1, a fourth shaft section 3b2 and a fifth shaft section 3b3 from right to left, the right end face of the female joint 3b is provided with a sealing groove 3b4, the inner wall is coaxially provided with a fifth hole 3b5 and a third threaded hole 3b6 from right to left, the threaded sleeve 3a is sleeved on the female joint 3b through the fourth hole 3a2 On the fifth shaft segment 3b3, the second threaded hole 3a1 can be threadedly matched with the second external thread 2a5, and the left end face of the second threaded hole 3a1 can contact the left end face of the fourth shaft segment 3b2, and the seal 3e is installed in the sealing groove 3b4. Preferably, the seal 3e is an O-ring; the O-ring has good sealing performance and can effectively prevent leakage of liquid or gas. It has a simple structure and is easy to install. It does not require complicated equipment and tools, and the O-ring has low manufacturing cost, long service life, stable performance, and high cost performance; the right end face of the third shaft segment 3b1 of the female connector 3b can contact the right end face of the third hole 2a4 of the male connector 2a, and the third threaded hole 3b6 is threadedly connected with the third external thread 4a of the straight pipe 4; the elbow assembly of the oil tank oil pipeline realizes the rapid installation and disassembly of the elbow and the straight pipe through the set joint assembly, thereby improving the maintenance efficiency of the oil tank oil pipeline.

[0036] like Figures 1 to 9As shown, the joint assembly also includes a through-and-close mechanism, which includes a first straight hole 1b arranged at the end of the elbow 1, a first hole 2a2 and a second hole 2a3 arranged between the first threaded hole 2a1 and the third hole 2a4, a first elastic body 2b, a first sealing ball 2c, a movable sleeve 2d, a second elastic body 3c, a second sealing ball 3d, and a second straight hole 4b arranged at one end of the straight pipe 4 close to the elbow 1, the inner diameter of the first hole 2a2 is larger than the inner diameter of the second hole 2a3 and smaller than the inner diameter of the first threaded hole 2a1, the first elastomer 2b is arranged in the first straight hole 1b, the first sealing ball 2c is arranged in the first threaded hole 2a1, and the first sealing ball 2c is arranged in the first elastic body 2b is in sealing contact with the first hole 2a2 under the action of the elastic force of the movable sleeve 2d, the movable sleeve 2d includes a first shaft section 2d1 and a second shaft section 2d2, and a plurality of through grooves 2d3 are arranged on the side walls of the movable sleeve 2d. Preferably, four through grooves 2d3 are respectively arranged on the side walls of the movable sleeve 2d; preferably, the through grooves 2d3 are evenly distributed, and the through groove design can ensure that the oil can flow smoothly, maintain the oil flow performance of the connecting part of the joint assembly, reduce friction, help reduce the occurrence of faults and damage, improve the stability and reliability of the equipment, and improve the oil flow efficiency and reliability of the oil pipeline; the first shaft section 2d1 is movably matched with the first hole 2a2 in clearance, and the second shaft section 2d2 is loosely matched with the second hole 2a3, the left end face of the first shaft segment 2d1 can contact the left end face of the first hole 2a2, the second elastic body 3c is arranged in the second straight hole 4b, preferably, the first elastic body 2b and the second elastic body 3c are both compression springs; the compression spring can provide a stable compression force, can produce elastic deformation when subjected to force, and then restore to its original state, so that it has good elastic properties, and has a simple structure, low manufacturing cost, and is easy to install and maintain. The compression spring is usually made of high-strength and fatigue-resistant materials and has a long service life; the second sealing ball 3d is arranged in the third threaded hole 3b6, and the second sealing ball 3d is in the second elastic body 3c The first sealing ball 2c and the second sealing ball 3d are sealed and contacted with the fifth hole 3b5 under the action of the elastic force. Preferably, the first sealing ball 2c and the second sealing ball 3d are made of 304 stainless steel. 304 stainless steel has good corrosion resistance, can resist the erosion of most chemical substances, and has good oxidation resistance. It can keep the surface smooth for a long time, is not easy to rust and oxidize, and prolongs the service life of parts. 304 stainless steel has high strength and hardness, and has good mechanical properties, which can meet the load-bearing and wear-resistant capacity required by the sealing ball at work; preferably, the first sealing ball 2c and the second sealing ball 3d are both hollow spheres. Compared with the solid valve core, the hollow sealing ball is lighter, which can reduce weight and reduce costs;The elbow assembly of the oil tank oil delivery pipe has a through-and-close mechanism provided in the joint assembly, so that when the joint assembly is in a separated state, the male joint assembly can close the oil stored in the elbow pipe, and the female joint assembly can close the oil stored in the straight pipe, so that the oil delivery pipe can be maintained with oil, which improves the convenience of oil delivery pipe maintenance; by respectively providing four through grooves on the side walls of both sides of the movable sleeve, the oil can smoothly pass through the joint assembly when the joint assembly is in a connected state, which improves the oil passing efficiency and reliability of the oil delivery pipe. ;

[0037] like Figures 1 to 9 As shown, when in use, first install the first elastic body 2b into the first straight hole 1b, install the movable sleeve 2d into the male joint 2a, then install the first sealing ball 2c into the first threaded hole 2a1, and thread the male joint 2a to the elbow 1. At this time, the first sealing ball 2c is in sealing contact with the first hole 2a2, and the oil in the elbow 1 cannot flow out of the male joint 2a; at the same time, install the second elastic body 3c into the second straight hole 4b, then put the threaded sleeve 3a onto the female joint 3b, and install the second sealing ball 3d into the third threaded hole 3b6. At this time, the second sealing ball 2c is in sealing contact with the first hole 2a2, and the oil in the elbow 1 cannot flow out from the male joint 2a. The sealing ball 3d is in sealing contact with the fifth hole 3b5, and the oil in the straight pipe 4 cannot flow out from the female joint 3b; then the threaded sleeve 3a is threadedly connected with the male joint 2a, thereby realizing the quick connection of the bent pipe 1 and the straight pipe 4. After the connection, the two ends of the movable sleeve 2d respectively push the first sealing ball 2c and the second sealing ball 3d to both sides, so that the oil can flow in the joint assembly through the through grooves 2d3 at both ends of the movable sleeve 2d; the bent pipe assembly of the oil tank oil pipeline realizes the quick installation and disassembly of the bent pipe and the straight pipe through the set joint assembly, thereby improving the maintenance efficiency of the oil tank oil pipeline.

Claims

1. A bent pipe assembly for a fuel tank oil delivery pipe, comprising a bent pipe (1) and straight pipes (4) arranged at both ends of the bent pipe (1), characterized in that: The two end portions of the curved pipe (1) are provided with a first external thread (1a), and the end of the straight pipe (4) close to the curved pipe (1) is provided with a third external thread (4a), and the curved pipe (1) and the straight pipe (4) are detachably connected together via a joint assembly; The joint assembly comprises a male joint assembly (2) and a female joint assembly (3); the male joint assembly (2) comprises a male joint (2a); the male joint (2a) is coaxially provided with a first threaded hole (2a1) and a third hole (2a4) in sequence from right to left; the outer wall of the male joint (2a) is provided with a second external thread (2a5); the first threaded hole (2a1) is threadedly connected to the first external thread (1a) of the elbow (1); the female joint assembly (3) comprises a threaded sleeve (3a), a female joint (3b) and a sealing element (3e); the threaded sleeve (3a) is coaxially provided with a second threaded hole (3a1) and a fourth hole (3a2) in sequence from right to left; the outer wall of the female joint (3b) is coaxially provided with a third shaft section (3b1), a fourth shaft section (3b2) and a fifth shaft section in sequence from right to left (3b3), the right end face of the female connector (3b) is provided with a sealing groove (3b4), the inner wall is coaxially provided with a fifth hole (3b5) and a third threaded hole (3b6) from right to left, the threaded sleeve (3a) is sleeved on the fifth shaft section (3b3) of the female connector (3b) through the fourth hole (3a2), the second threaded hole (3a1) can be threadedly matched with the second external thread (2a5), the left end face of the second threaded hole (3a1) can contact the left end face of the fourth shaft section (3b2), the sealing element (3e) is installed in the sealing groove (3b4), the right end face of the third shaft section (3b1) of the female connector (3b) can contact the right end face of the third hole (2a4) of the male connector (2a), and the third threaded hole (3b6) is threadedly connected with the third external thread (4a) of the straight pipe (4).

2. The elbow assembly of the oil tank oil delivery pipe according to claim 1, characterized in that: The inner diameters of the curved pipe (1) and the straight pipe (4) are equal.

3. The elbow assembly of the oil tank oil delivery pipe according to claim 1, characterized in that: The first external thread (1a) and the third external thread (4a) have the same specifications.

4. The elbow assembly of the oil tank oil delivery pipe according to claim 1, characterized in that: The joint assembly also includes an opening and closing mechanism, which includes a first straight hole (1b) arranged at the end of the curved pipe (1), a first hole (2a2) and a second hole (2a3) arranged between the first threaded hole (2a1) and the third hole (2a4), a first elastic body (2b), a first sealing ball (2c), a movable sleeve (2d), a second elastic body (3c), a second sealing ball (3d), and a second straight hole (4b) arranged at an end of the straight pipe (4) close to the curved pipe (1), the inner diameter of the first hole (2a2) being larger than the inner diameter of the second hole (2a3) and smaller than the inner diameter of the first threaded hole (2a1), the first elastic body (2b) being arranged in the first straight hole (1b), the first sealing ball (2c) being arranged in the first threaded hole (2a1), and the first sealing ball (2c) being arranged in the first The movable sleeve (2d) is in sealing contact with the first hole (2a2) under the action of the elastic force of the elastic body (2b); the movable sleeve (2d) comprises a first shaft section (2d1) and a second shaft section (2d2); a plurality of through grooves (2d3) are arranged on the side walls on both sides of the movable sleeve (2d); the first shaft section (2d1) is movably fitted with the first hole (2a2) in a clearance; the second shaft section (2d2) is fitted with the second hole (2a3) in a clearance; the left end face of the first shaft section (2d1) can contact the left end face of the first hole (2a2); the second elastic body (3c) is arranged in the second straight hole (4b); the second sealing ball (3d) is arranged in the third threaded hole (3b6); the second sealing ball (3d) is in sealing contact with the fifth hole (3b5) under the action of the elastic force of the second elastic body (3c).

5. The elbow assembly of the oil tank oil delivery pipe according to claim 4, characterized in that: Four through grooves (2d3) are respectively arranged on the side walls on both sides of the movable sleeve (2d).

6. The elbow assembly of the oil tank oil delivery pipe according to claim 5, characterized in that: The through grooves (2d3) are evenly distributed.

7. The elbow assembly of the oil tank oil delivery pipe according to claim 4, characterized in that: The first elastic body (2b) and the second elastic body (3c) are both compression springs.

8. The elbow assembly of the oil tank oil delivery pipe according to claim 4, characterized in that: The first sealing ball (2c) and the second sealing ball (3d) are both made of 304 stainless steel.

9. The elbow assembly of the oil tank oil delivery pipe according to claim 4, characterized in that: The first sealing ball (2c) and the second sealing ball (3d) are both hollow spheres.

10. The elbow assembly of the oil tank oil delivery pipe according to claim 1, characterized in that: The sealing element (3e) is an O-type sealing ring.

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