Nuclear power emergency diesel injector bushing nut dismounting tool

Abstract

The utility model discloses a nuclear power emergency diesel injector bush nut dismounting tool which comprises a main body used for being inserted into an injector seat hole. The connecting piece is used for being clamped in a reserved groove of a bushing nut, and the connecting piece is installed at the insertion end of the main body; the main body is inserted into the oil sprayer seat hole and is in contact with the oil sprayer bushing nut, the position of the connecting piece is adjusted, the connecting piece is matched with the groove reserved in the oil sprayer bushing nut, and finally the main body is screwed, so that the oil sprayer bushing nut can be disassembled and assembled, the structure is simple, the cost is low, and the operation is flexible and convenient; the oil sprayer bushing nut can be easily loosened and tightened in an oil sprayer seat hole of a cylinder cover.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power maintenance technology, and in particular to a tool for disassembling and assembling fuel injector bushing nuts for nuclear power emergency diesel engines. Background Technology

[0002] The fuel injector of a diesel engine is installed in the center of the cylinder head, directly injecting fuel into the combustion chamber. During operation, the combustion process in the cylinder generates a large amount of heat, which is transferred to the cylinder head housing. Therefore, the cylinder head needs to be cooled, typically using water cooling. The injector mounting holes are at high temperatures during engine operation. To ensure effective cooling, a cooling water chamber is installed around the mounting hole. The water chamber is separated from the mounting hole by an injector bushing, and the bushing is tightened onto the cylinder using a bushing nut.

[0003] The tightening torque of the injector bushing nut is relatively large, and the valve hole on the cylinder head is quite deep, making the installation and removal of the nut somewhat difficult. Without the assistance of special tools, it is difficult to ensure that the nut can reliably and stably press the bushing into the injector seat hole, and the sealing effect of the bushing is also difficult to guarantee, which greatly reduces the efficiency of bushing nut installation and removal. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a tool for disassembling and assembling the injector bushing nut of a nuclear power emergency diesel engine.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A tool for removing and assembling fuel injector bushing nuts for nuclear power emergency diesel engines, comprising:

[0007] The main body includes a main rod, a turning part, and a mating part; the turning part for turning with a wrench is located at the top of the main rod, and the mating part for inserting into the injector seat hole is located at the bottom of the main rod.

[0008] A connector is used to snap into the pre-reserved groove in the bushing nut and is installed on the mating part.

[0009] Furthermore, in the aforementioned tool for disassembling and assembling the injector bushing nut of a nuclear power emergency diesel engine, the tightening part is preferably polygonal or circular.

[0010] Furthermore, in the aforementioned nuclear power emergency diesel engine injector bushing nut disassembly and assembly tool, preferably, the bottom of the mating part is provided with mounting holes spaced apart, corresponding to the number of pre-reserved grooves in the bushing nut.

[0011] Furthermore, in the aforementioned tool for disassembling and assembling fuel injector bushing nuts for nuclear power emergency diesel engines, preferably the number of connecting parts corresponds to the number of mounting holes, and they are respectively installed in the mounting holes.

[0012] Furthermore, in the aforementioned tool for disassembling and assembling the injector bushing nut of a nuclear power emergency diesel engine, the mating part is preferably cylindrical in shape.

[0013] Furthermore, in the aforementioned tool for disassembling and assembling the injector bushing nut of a nuclear power emergency diesel engine, preferably the cross-section of the mating part is equal to the cross-section of the injector bushing and / or the cross-section of the injector seat hole.

[0014] Furthermore, in the aforementioned tool for disassembling and assembling the injector bushing nut of a nuclear power emergency diesel engine, it is preferable that the diameter of the main rod portion and the tightening portion is smaller than the diameter of the mating portion.

[0015] Furthermore, in the aforementioned tool for disassembling and assembling the injector bushing nut of a nuclear power emergency diesel engine, the height of the main body is preferably greater than the depth of the injector seat hole.

[0016] The present invention has the following advantages: by inserting the main body into the injector seat hole and contacting the injector bushing nut, adjusting the position of the connecting part so that the connecting part fits with the groove reserved on the injector bushing nut, and finally turning the main body, the injector bushing nut can be disassembled and assembled. The structure is simple, the cost is low, and the operation is flexible and convenient. The injector bushing nut can be easily loosened and tightened in the cylinder head injector seat hole. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of inserting the nuclear power emergency diesel engine injector bushing nut disassembly and assembly tool into the injector seat hole in some embodiments of this utility model;

[0019] Figure 2 yes Figure 1 The diagram shows the structure of the tool for disassembling and assembling the fuel injector bushing nut of a nuclear power emergency diesel engine.

[0020] Explanation of the labels in the diagram:

[0021] 10. Main body; 11. Main rod; 12. Tightening part; 13. Fitting part; 131. Mounting hole; 20. Connecting piece. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0025] The technical solution adopted by this utility model to solve its technical problem is:

[0026] like Figures 1 to 2As shown, some embodiments of this utility model disclose a tool for removing and installing injector bushing nuts for nuclear power emergency diesel engines. In some embodiments, this tool may include a main body 10 and a connector 20. The main body 10 is inserted into the injector seat hole, and the connector 20 is installed at the insertion end of the main body 10 and inserted into a pre-reserved groove in the bushing nut. Understandably, the connector 20 is inserted into the pre-reserved groove in the bushing nut for connection and fixation. Then, a wrench is used to turn the main body 10, thereby rotating the bushing nut to achieve tightening and loosening of the bushing nut in the cylinder head injector seat hole.

[0027] Continue to refer to Figure 2 The height of the main body 10 is greater than the depth of the injector seat hole. Understandably, one end of the main body 10 protrudes from the injector seat hole to facilitate the operator's turning of the main body 10. The length of the main body 10 can be customized according to the depth of the injector seat hole. In some embodiments, the main body 10 may include a main rod 11, a turning part 12 respectively disposed at both ends of the main rod 11, and a mating part 13. Understandably, the turning part 12 is used for a secure clamping action with a wrench, and the mating part 13 is used for insertion into the injector seat hole. In some embodiments, the main rod 11, the turning part 12, and the mating part 13 are integrally forged. Of course, in other embodiments, the main rod 11, the turning part 12, and the mating part 13 may also be spliced, snap-fitted, or detachably connected.

[0028] In some embodiments, the diameters of the main rod portion 11 and the turning portion 12 are smaller than the diameter of the mating portion 13. Understandably, the main rod portion 11 and the turning portion 12 protrude beyond the injector seat hole, and the diameters of the main rod portion 11 and the turning portion 12 are smaller than the mating portion 13 to facilitate operation by personnel and to provide operating space.

[0029] In some embodiments, the tightening part 12 has a polygonal or circular structure. Understandably, a polygonal structure facilitates secure clamping with a wrench. Similarly, a circular structure also facilitates secure clamping with a wrench. In other embodiments, the polygonal structure has six sides; the hexagonal structure ensures that the bushing nut in the injector seat hole is tightened to a standard torque using a torque wrench, ensuring reliable tightening. In other embodiments, the surface of the tightening part 12 is provided with anti-slip texture to prevent slippage when the wrench is tightened.

[0030] In some embodiments, the mating part 13 has a cylindrical structure. Understandably, the cylindrical structure serves as a guide when inserted into the injector seat hole, ensuring a smoother and faster fit between the connector 20 and the pre-drilled groove of the bushing nut. In some embodiments, the bottom of the mating part 13 has mounting holes 131 spaced apart, corresponding to the number of pre-drilled grooves in the bushing nut. In some embodiments, the cross-section of the mating part 13 is equal to the cross-section of the injector bushing and / or the cross-section of the injector seat hole. Understandably, the cross-sectional area of ​​the mating part 13 is equal to the cross-sectional area of ​​the injector bushing to facilitate quick positioning of the connector 20 into the pre-drilled groove of the bushing nut.

[0031] The number of connectors 20 corresponds to the number of mounting holes 131, and they are installed in the mounting holes 131 respectively. In some embodiments, four mounting holes 131 and four connectors 20 may be provided, with the four connectors 20 arranged at intervals in the four mounting holes 131 opened at the bottom of the mating part 13. It can be understood that the installation positions of the four connectors 20 correspond to the positions of the grooves reserved in the bushing nut. The connectors 20 and the mounting holes 131 are fitted with a small clearance to ensure a stable installation. In some embodiments, the connectors 20 are pins; of course, in other embodiments, the connectors 20 may also be fixing bolts, screws, etc. In addition, the number and position of the connectors 20 and the mounting holes 131 can be set according to the number and position of the grooves reserved in the bushing nut, and are not limited here.

[0032] The following section will further explain the tool for disassembling and assembling the injector bushing nut of the nuclear power emergency diesel engine, based on its usage process.

[0033] When using this nuclear power emergency diesel engine injector bushing nut removal and installation tool: insert the mating part 13 of the main body 10 along the injector seat hole until it contacts the injector bushing nut, rotate the main body 10 to adjust the position of the connecting parts 20, and ensure that the four connecting parts 20 are inserted into the grooves reserved in the bushing nut. Use a wrench to turn the turning part 12 of the main body 10 to remove and install the injector bushing nut.

[0034] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A tool for disassembling and assembling a bushing nut of a nuclear emergency diesel fuel injector, characterized in that, The utility model relates to a kind of oil injector sleeve nut adapter, including: Main body (10), the main body (10) includes main stem part (11), screwing part (12) and cooperation part (13);The screwing part (12) for cooperation spanner screwing is arranged at the top of the main stem part (11), and the cooperation part (13) for inserting oil injector seat hole is arranged at the bottom of the main stem part (11); Connecting piece (20) is used for being clamped in bushing nut reserved groove, and is installed on the cooperation part (13).

2. The nuclear emergency diesel fuel injector bushing nut dismounting tool according to claim 1, characterized in that, The screwing part (12) is polygonal structure, or circular structure.

3. The nuclear emergency diesel fuel injector bushing nut dismounting tool according to claim 1, characterized in that, The bottom of the cooperation part (13) is arranged with the installation hole (131) corresponding to the number of bushing nut reserved groove.

4. The nuclear emergency diesel fuel injector bushing nut dismounting tool according to claim 3, characterized in that, The number of the connecting piece (20) is corresponding to the number of installation hole (131), and is respectively installed in the installation hole (131).

5. The nuclear emergency diesel fuel injector bushing nut dismounting tool according to claim 1, characterized in that, The cooperation part (13) is cylindrical structure.

6. The nuclear emergency diesel fuel injector bushing nut removal tool according to claim 1, wherein, The cross section of the cooperation part (13) is equal to the cross section of oil injector bushing or / and the cross section of oil injector seat hole.

7. The nuclear emergency diesel fuel injector bushing nut dismounting tool according to claim 1, characterized in that, The diameter of the main stem part (11) and the screwing part (12) is less than the diameter of the cooperation part (13).

8. The nuclear emergency diesel fuel injector bushing nut dismounting tool according to claim 1, characterized in that, The height of the main body (10) is greater than the depth of oil injector seat hole.

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