Installation structure and installation method of nozzle

Abstract

The present invention provides an installation structure and installation method for an electric nozzle. The installation structure includes: a receiver base, the outside of the receiver base has a base external thread and the inside has a base internal thread; an adjustment sleeve, the inner wall of the adjustment sleeve has an adjustment sleeve internal thread, and the adjustment sleeve is rotatably installed on the outside of the receiver base through the adjustment sleeve internal thread and the base external thread; and an electric nozzle sleeve, which is sleeved on the outside of the electric nozzle, the outer wall of the electric nozzle sleeve has an electric nozzle sleeve external thread, and the electric nozzle sleeve is rotatably installed on the inside of the receiver base through the electric nozzle sleeve external thread and the base internal thread, wherein the rotation direction of the electric nozzle sleeve external thread is opposite to that of the adjustment sleeve internal thread. The installation structure and installation method of the electric nozzle of the present invention can quickly and conveniently adjust the installation depth of the electric nozzle in the engine combustion chamber.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of engines, and in particular to a mounting structure and a mounting method of an electric nozzle. Background Art

[0002] In an aircraft engine, the combustion chamber is the area where combustion is organized. The compressed air from the compressor enters the combustion chamber and mixes with the gas ejected from the fuel nozzle and burns to produce high-temperature gas, which drives the turbine to work and generate thrust. In the combustion chamber, the oil-gas mixture is ignited by the energy generated by the ignition nozzle.

[0003] The ignition nozzle is generally installed on the combustion chamber casing and extends into the flame tube through the opening on the combustion chamber casing. The flame tube is the combustion area of ​​the combustion chamber, that is, the oil-gas mixing area. The ignition nozzle generally needs to be flush with the inner wall of the flame tube. Insufficient extension will affect the ignition success rate, but excessive extension will cause ablation problems at the nozzle end. Therefore, controlling the extension of the ignition nozzle after installation is crucial to the ignition performance and nozzle service life. On the other hand, the flame tube is a thin-walled part, which often deforms or collapses due to problems such as the assembly of the flame tube itself and the welding of the floating sleeve, which will cause the installation depth of the ignition nozzle to be uncontrollable. The height of the nozzle installation needs to be adjusted according to the actual measurement results to ensure the extension.

[0004] Currently, many types of engines use nozzle adjustment gaskets to adjust the nozzle extension. The number or thickness of the adjustment gaskets needs to be selected according to the deformation of the flame tube. Although this method of adjustment through gaskets is simple in concept, it often leads to greater assembly complexity and has many defects.

[0005] For example, it is necessary to test-fit to determine the number of gaskets required. If the extension amount needs to be readjusted on the test bench, all of them need to be disassembled and the number of gaskets adjusted to change the installation depth of the nozzle. The replacement is complicated and can easily cause damage to the ignition nozzle. In addition, the uncertainty of the number of gaskets will also increase the difficulty of physical configuration control. At the same time, the superposition of multiple gaskets will also increase the problem of sealing leakage, affecting engine performance and safety. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a nozzle installation structure and installation method, which can quickly and conveniently adjust the installation depth of the nozzle in the engine combustion chamber.

[0007] In order to solve the above technical problems, the present invention provides an installation structure of an electric nozzle, comprising: a receiver base, the outside of the receiver base has an external base thread, and the inside of the receiver base has an internal base thread; an adjustment sleeve, the inner wall of the adjustment sleeve has an internal adjustment sleeve thread, and the adjustment sleeve is rotatably installed on the outside of the receiver base through the internal adjustment sleeve thread and the external base thread; and an electric nozzle sleeve, which is sleeved on the outside of the electric nozzle, the outer wall of the electric nozzle sleeve has an external nozzle sleeve thread, and the electric nozzle sleeve is rotatably installed on the inside of the receiver base through the external nozzle sleeve thread and the internal base thread, wherein the rotation direction of the external thread of the electric nozzle sleeve is opposite to that of the internal thread of the adjustment sleeve.

[0008] In one embodiment of the present invention, the pitch of the external thread of the nozzle sleeve is different from that of the internal thread of the adjustment sleeve.

[0009] In one embodiment of the present invention, a plurality of sealing gaskets are further included, which are located between the nozzle and the nozzle sleeve and / or between the adjustment sleeve and the nozzle sleeve.

[0010] In one embodiment of the present invention, a C-shaped ring is further included, which is located between the nozzle sleeve and the receiver base.

[0011] In one embodiment of the present invention, the interior of the casing base further includes a guide slope, and the guide slope is used to install the C-ring.

[0012] In one embodiment of the present invention, the inner wall of the nozzle cover is further provided with an inner thread of the nozzle cover, and the nozzle cover is sleeved on the outside of the nozzle through the inner thread of the nozzle cover.

[0013] In one embodiment of the present invention, it further comprises a plurality of lock wires located on the adjustment sleeve and the nozzle sleeve, which are used to prevent the adjustment sleeve and the nozzle sleeve from moving relative to the receiver base after the nozzle is adjusted to have an installation depth.

[0014] In order to solve the above technical problems, the present invention also provides a method for installing an electric nozzle, which is suitable for adjusting the installation depth of the electric nozzle in the engine combustion chamber, comprising the following steps: rotatably mounting an adjustment sleeve on the outside of a casing base via an internal thread of the adjustment sleeve located on an inner wall of the adjustment sleeve, and screwing the adjustment sleeve in a direction close to the combustion chamber; rotatably mounting an electric nozzle sleeve with the electric nozzle on the inside of the casing base via an external thread of the electric nozzle sleeve located on an outer wall of the electric nozzle sleeve; adjusting the installation depth of the electric nozzle to a preset depth; and keeping the electric nozzle sleeve stationary, screwing the adjustment sleeve out from the bottom of the casing base in a direction away from the combustion chamber until it contacts and presses on the electric nozzle sleeve, thereby fixing the electric nozzle at the preset depth.

[0015] In an embodiment of a method for installing an electric nozzle of the present invention, the method further comprises locking a plurality of locking wires located on the electric nozzle, the adjustment sleeve and the electric nozzle sleeve after the adjustment sleeve contacts and presses on the electric nozzle sleeve, so as to fix the electric nozzle at the preset depth.

[0016] In an embodiment of a method for installing a nozzle of the present invention, the adjustable range of the installation depth is 2 to 4 mm.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The installation structure and installation method of the nozzle of the present invention adopts an adjustment sleeve to adjust the installation depth of the nozzle, and the installation depth of the nozzle can be adjusted in real time without disassembling the nozzle.

[0019] By setting the threads of the adjustment sleeve and the nozzle sleeve in opposite directions and with different pitches, and installing them on the receiver base at the same time, the installation and fixation of the two can be effectively achieved;

[0020] Effectively avoid the influence of the unclear thickness and quantity of the nozzle adjustment pads on the physical configuration control in the traditional nozzle installation method; and

[0021] The installation structure and installation method of the nozzle of the present invention also adopts a C-ring in combination with a sealing gasket to achieve double sealing, thereby increasing the sealing reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the present application, and they are included and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and together with the present specification serve to explain the principles of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the structure of the engine;

[0024] Figure 2 It is a schematic diagram of the structure of the engine combustion chamber;

[0025] Figure 3a and Figure 3b They are respectively a cross-sectional view and a schematic diagram of the appearance of a mounting structure of an electric nozzle according to an embodiment of the present invention;

[0026] Figure 4 It is a cross-sectional view of a casing base in a mounting structure of an electric nozzle according to an embodiment of the present invention;

[0027] Figure 5a and Figure 5b They are respectively a cross-sectional view and a schematic diagram of the appearance of an adjustment sleeve in a mounting structure of an electric nozzle according to an embodiment of the present invention;

[0028] Figure 6a and Figure 6bThey are respectively a cross-sectional view and a schematic diagram of the appearance of a nozzle cover in a nozzle installation structure according to an embodiment of the present invention;

[0029] Figure 7a Figure 7b is a schematic diagram comparing an electric nozzle at two different installation depths using an electric nozzle installation structure according to an embodiment of the present invention; and

[0030] Figure 8 The figure is a flow chart of a method for installing a nozzle according to an embodiment of the present invention.

[0031] Figure 1 to Figure 7b List of reference numerals

[0032] 10 Engine

[0033] 11 Compressor

[0034] 12 Combustion Chamber

[0035] 13 Turbine

[0036] 14 Fan

[0037] 20 Flame tube head

[0038] 21 Flame Tube

[0039] 210 Flame tube inner wall

[0040] 22 Fuel nozzle

[0041] 23 Combustion chamber casing

[0042] 24 Diffuser

[0043] 25 Ignition nozzle

[0044] 30 Nozzle installation structure

[0045] 300 nozzle

[0046] 300' electric nozzle lock wire hole

[0047] 300” lower end face (of the nozzle)

[0048] 31 Receiver base

[0049] 310 Receiver

[0050] 311 Base external thread

[0051] 312 Base internal thread

[0052] 313 Guide Slope

[0053] 314 Sealing surface of base

[0054] 32 Adjustment sleeve

[0055] 321 Adjusting sleeve internal thread

[0056] 32' Adjustment sleeve lock thread hole

[0057] 33 Nozzle Cover

[0058] 331 Nozzle sleeve external thread

[0059] 332 Nozzle sleeve internal thread

[0060] 33' Nozzle Locking Wire Hole

[0061] 34(341,342) Sealing gasket

[0062] 35 C-ring DETAILED DESCRIPTION

[0063] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0064] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0066] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0067] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0068] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0069] It should be understood that when a component is referred to as being “on another component,” “connected to another component,” or “contacting another component,” it can be directly on, connected to, coupled to, or contacting the other component, or intervening components may be present. In contrast, when a component is referred to as being “directly on another component,” “directly connected to,” or “directly contacting” another component, there are no intervening components present.

[0070] like Figure 1, which is a schematic diagram of the structure of the engine 10. The engine 10 is mainly composed of a compressor 11, a combustion chamber 12 and a turbine 13. The compressor 11 compresses air and burns it in the combustion chamber 12, and then works on the turbine 13, converting the chemical energy of the fuel into the mechanical energy of the turbine 13. The turbine 13 discharges the fuel gas to drive the fan 14 to generate thrust.

[0071] More specifically, the combustion chamber 12 of the engine 10 is partially enlarged to obtain Figure 2 .like Figure 2 As shown, the combustion chamber 12 is mainly composed of a flame tube 21 (including a flame tube head 20), a fuel nozzle 22, a combustion chamber casing 23, a diffuser 24 and an ignition nozzle 25. Figure 1 The compressed airflow of the compressor 11 shown in the figure is decelerated and diffused by the diffuser 24, and then enters the flame tube 21 to mix with the fuel sprayed by the fuel nozzle 22, and then the high-energy electric spark generated by the ignition nozzle 25 ignites the oil-air mixture, thereby achieving combustion. The ignition nozzle 25 is generally installed on the combustion chamber casing 23 and extends into the flame tube 21. The lower end surface of the ignition nozzle 25 should be flush with the inner wall 210 of the flame tube or within a certain range to ensure efficient ignition without being burned.

[0072] According to the particularity of the working environment of the above-mentioned ignition nozzle 25, the technical problem to be solved by the present invention is how to quickly and conveniently control the installation depth of the ignition nozzle 25 so that it is within a certain reasonable range compared to the inner wall 210 of the flame tube, so that it can be ignited smoothly without being burned by the oil-gas mixture in the flame tube 21, and at the same time avoid the defects of the traditional way of installing the ignition nozzle 25 mentioned in the above-mentioned background technology.

[0073] like Figure 3a and Figure 3b As shown, an embodiment of the present invention provides a nozzle installation structure 30, which can quickly and conveniently adjust the installation depth of the nozzle in the engine combustion chamber. Figure 3a and Figure 3b They are a cross-sectional view and a schematic diagram of the appearance of the mounting structure 30 . Figure 4 to Figure 6b It is a cross-sectional view and a schematic appearance diagram of the casing base, the adjustment sleeve and the nozzle sleeve in the mounting structure 30 of this embodiment. Figure 7a and Figure 7b Is to use Figure 3a and 3b The schematic diagram of the comparison of the nozzle of the installation structure 30 at two different installation depths is shown below. Figure 3a to Figure 7b The installation structure 30 of the nozzle in this embodiment is described.

[0074] like Figure 3a and 3bAs shown, the nozzle installation structure 30 mainly includes a casing base 31, an adjustment sleeve 32 and a nozzle sleeve 33, wherein the nozzle sleeve 33 is provided with a nozzle 300. For example, when the installation structure 30 is used as Figure 2 In the scenario shown, the nozzle 300 is the ignition nozzle 25 .

[0075] Specific as Figure 4 As shown, the casing base 31 has an external base thread 311 on the outside and an internal base thread 312 on the inside. Figure 4 It can be seen that the receiver base 31 is actually a part of the receiver 310. Figure 2 In the illustrated scenario, the casing 310 is the combustion chamber casing 23 .

[0076] Further, according to Figure 5a and Figure 5b The inner wall of the adjusting sleeve 32 has an adjusting sleeve internal thread 321, and the adjusting sleeve 32 is formed by the adjusting sleeve internal thread 321 and the adjusting sleeve 32. Figure 4 The base external thread 311 shown is rotatably mounted on the outside of the receiver base 31 .

[0077] According to Figure 6a and Figure 6b , 33 sets of electric nozzle sets are located at Figure 3a and 3b The outer wall of the nozzle cover 33 has a nozzle cover outer thread 331, and the nozzle cover 33 is connected to the nozzle cover outer thread 331. Figure 4 The base internal thread 312 shown is rotatably mounted inside the receiver base 31 .

[0078] Further, such as Figure 6a As shown, the inner wall of the nozzle sleeve 33 is also provided with an inner thread 332 of the nozzle sleeve, and the nozzle sleeve 33 is sleeved on the inner thread 332 of the nozzle sleeve. Figure 3a and 3b The exterior of the nozzle 300 is shown.

[0079] In particular, in this embodiment, if Figure 6a The outer thread 331 of the nozzle sleeve shown is similar to the Figure 5a The rotation direction of the inner thread 321 of the adjustment sleeve is opposite to that of the inner thread 321 of the adjustment sleeve. This can prevent the adjustment sleeve 32 and the nozzle sleeve 33 from moving upward or downward together during the installation of the nozzle 300, which would affect the stability during the installation.

[0080] In addition, in multiple embodiments of the present invention including this embodiment, the pitches of the nozzle sleeve external thread 331 and the adjustment sleeve internal thread 321 are also different, thereby further preventing the adjustment sleeve 32 and the nozzle sleeve 33 from loosening at the same time, and further enhancing the stability of the mounting structure 30.

[0081] like Figure 3a and 3b As shown, the mounting structure 30 of this embodiment further includes a plurality of sealing gaskets 34, which are respectively located between the nozzle 300 and the nozzle sleeve 33 and / or between the adjustment sleeve 32 and the nozzle sleeve 33. Figure 3a As shown, the sealing gasket 341 is located between the nozzle 300 and the nozzle sleeve 33, and can achieve sealing between the nozzle 300 and the nozzle sleeve 33. The sealing gasket 342 is located between the adjustment sleeve 32 and the nozzle sleeve 33, and can be used to achieve sealing between the nozzle sleeve 33 and the adjustment sleeve 32 and reduce friction, and at the same time, it can also ensure further sealing on the leakage path between the nozzle sleeve 33 and the casing base 31.

[0082] according to Figure 3a In this embodiment, the mounting structure 30 further includes a C-shaped ring 35, which is located between the nozzle sleeve 33 and the casing base 31. The C-shaped ring 35 can effectively seal the leakage path between the nozzle sleeve 33 and the casing base 31. In particular, in combination with the sealing gasket 342, a double seal is achieved on the leakage path between the casing base 31 and the nozzle sleeve 33, which has a better sealing effect and effectively improves the sealing performance and reliability of the mounting structure 30.

[0083] Preferably, if Figure 4 As shown, the interior of the casing base 31 also includes a guide slope 313, which is used to install the C-shaped ring 35, can guide the C-shaped ring 35 to be installed in a suitable position, and can cooperate with the C-shaped ring 35 to achieve sealing on the leakage path between the nozzle sleeve 33 and the casing base 31. In this embodiment, Figure 4 Also shown is a sealing surface 314 located inside the casing base 31, which cooperates with the C-ring 35 to enhance the sealing effect.

[0084] For example, when selecting materials for the sealing gasket 34 and the C-ring 35 , the actual working scenario of the nozzle 300 needs to be considered. High temperature resistant metals can be selected so that they can adapt to the working environment of the nozzle 300 and can also achieve sealing.

[0085] In order to improve stability, the mounting structure 30 in this embodiment also includes a plurality of locking wires located on the adjustment sleeve 32 and the nozzle sleeve 33, which are used to prevent the adjustment sleeve 32 and the nozzle sleeve 33 from moving relative to the casing base 31 after the nozzle 300 adjusts the installation depth, thereby improving the installation effect and improving the stability of the mounting structure 30. At the same time, the nozzle 300 is also equipped with locking wires, so that the nozzle 300 does not move relative to the nozzle sleeve 33 after the adjustment is completed, thereby reinforcing the nozzle mounting structure 30 as a whole. Figure 3b The nozzle locking wire hole 300', the nozzle sleeve locking wire hole 33' and the adjustment sleeve locking wire hole 32' for assembling the locking wire are shown.

[0086] On the whole, the above reference Figure 3a to Figure 6b The nozzle mounting structure 30 described above can mount the nozzle 300 on the engine combustion chamber, and the installation depth of the lower end surface 300" of the nozzle 300 in the combustion chamber can be adjusted at any time by screwing in and out the adjustment sleeve 32 and the nozzle sleeve 33. Figure 2 In the scenario shown, the nozzle mounting structure 30 can be used to make the lower end surface 300" of the nozzle 300 relative to the Figure 2 The inner wall 210 of the flame tube shown is within a certain reasonable range, so that ignition can be carried out smoothly and the adverse consequences of the nozzle 300 being burned can be avoided.

[0087] like Figure 7a and 7b FIG. 1 is a schematic diagram showing a comparison of the nozzle 300 using the nozzle mounting structure 30 of this embodiment at two different mounting depths. Figure 7a In FIG. 1 , the deepest installation depth that the nozzle 300 can reach using the above-mentioned installation structure 30 is shown. Figure 7a As shown, place it in Figure 2 In the scene shown, the lower end surface 300" of the nozzle 300 is already below the inner wall 210 of the flame tube, and at this time, the adjustment sleeve 32 is in close contact with the casing base 31, and there is no downward displacement space. Therefore, the installation depth of the nozzle 300 can be controlled not to exceed this limit installation depth, effectively ensuring that the nozzle 300 is not ablated.

[0088] On the other hand, according to actual production requirements, if the installation depth of the nozzle 300 needs to be adjusted, the adjustment sleeve 32 can be first screwed upwards, and then the nozzle 300 can be adjusted to a suitable installation depth, for example, Figure 7b As shown, it is just flush with the inner wall 210 of the flame tube, and then the nozzle sleeve 33 is tightened and all the lock wires are installed to fix the nozzle 300 in the position as shown. Figure 7b The installation depth shown ensures that the nozzle 300 can be successfully ignited.

[0089] It is understandable that the above reference Figure 3a to Figure 7b The figure is only a schematic diagram of the installation structure of the nozzle of one embodiment of the present invention. In other embodiments of the present invention, the installation structure of the nozzle can realize the above-mentioned quick and convenient adjustment of the installation depth of the nozzle on the basis of sealing, but the appearance may be different from the above-mentioned nozzle installation structure 30. For example, in the above embodiments, the adjustment sleeve 32 and the nozzle sleeve 33 are both hexagonal, but the present invention is not limited to this. As long as the above-mentioned technical effects can be achieved, the appearance may be other shapes or at least can be screwed in and out of the receiver base with a mounting tool such as a wrench, and various modifications belong to the spirit and scope of the present invention.

[0090] Another aspect of the present invention provides a method for installing an electric nozzle, which is suitable for adjusting the installation depth of the electric nozzle in the engine combustion chamber. Figure 8 As shown, the nozzle installation method 80 includes the following steps.

[0091] Step 81: The adjusting sleeve is rotatably mounted on the outside of the casing base via the adjusting sleeve internal thread located on the inner wall of the adjusting sleeve, and the adjusting sleeve is screwed in toward the direction close to the combustion chamber.

[0092] Step 82: The nozzle sleeve equipped with the nozzle is rotatably mounted inside the receiver base via the nozzle sleeve external thread located on the outer wall of the nozzle sleeve.

[0093] Step 83: Adjust the installation depth of the nozzle to a preset depth.

[0094] Step 84: Keeping the nozzle sleeve stationary, rotate the adjustment sleeve from the bottom of the receiver base away from the combustion chamber until it contacts and presses against the nozzle sleeve, thereby fixing the nozzle at the preset depth.

[0095] In this application Figure 8 Flowcharts are used to illustrate the operations performed by the system according to the embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed precisely in order. Instead, various steps may be processed in reverse order or simultaneously. At the same time, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0096] In some embodiments of the present invention, the method for installing the nozzle further includes locking a plurality of locking wires on the nozzle, the adjustment sleeve and the nozzle sleeve after the adjustment sleeve contacts and presses on the nozzle sleeve to fix the nozzle at a preset depth.

[0097] The present invention includes Figure 8 In the embodiment shown, according to the method for installing a nozzle of the present invention, the nozzle installation depth can be adjusted within a range of 2 to 4 mm. It is understandable that the internal space of the receiver base and the distance between the threaded sections of the inner thread of the adjustment sleeve and the outer thread of the nozzle sleeve should be set to match the adjustable range of the nozzle installation depth.

[0098] The present invention Figure 8 The nozzle installation method 80 shown can be applied to Figures 3a to 7b The nozzle installation structure 30 is shown, but the present invention is not limited thereto. In order to better understand the nozzle installation structure and method of the present invention, for example, if Figure 8 The installation method 80 shown is to use Figure 3a and 3b The mounting structure 30 shown in FIG. Figure 2In the scenario shown, the nozzle 300 can be installed and the installation depth can be adjusted according to the following method.

[0099] First, the adjusting sleeve 32 is rotatably mounted on the outside of the casing base 31 through the adjusting sleeve internal thread 321 located on the inner wall of the adjusting sleeve, and the adjusting sleeve 32 is screwed in the direction close to the combustion chamber 12 .

[0100] Then, the nozzle sleeve 33 equipped with the nozzle 300 is rotatably mounted inside the casing base 31 through the nozzle sleeve external thread 331 located on the outer wall of the nozzle sleeve.

[0101] Adjust the installation depth of the nozzle 300 to a preset depth. Specifically, the preset depth can be changed according to actual production needs, such as Figure 7a-7b As shown, it can be just flush with the inner wall 210 of the flame tube, or it can be located a certain distance below or above the inner wall 210 of the flame tube, thereby ensuring that it can be ignited smoothly without being burned.

[0102] Finally, the nozzle sleeve 33 is kept stationary, and the adjustment sleeve 32 is rotated out from the bottom of the casing base 31 in a direction away from the combustion chamber 12 until it contacts and presses against the nozzle sleeve 33, thereby fixing the nozzle 300 at the above-mentioned preset depth. In this step, the nozzle 300 can also be fixed at the above-mentioned preset depth by locking a plurality of lock wires located on the nozzle 300, the adjustment sleeve 32 and the nozzle sleeve 33.

[0103] Other information about Figure 8 For other details of the installation method 80 shown, reference may be made to the detailed description of the nozzle installation structure 30 described above, which will not be repeated here.

[0104] Through the above-mentioned installation method and installation structure of the electric nozzle, the installation depth of the electric nozzle can be adjusted quickly and conveniently while ensuring good sealing performance.

[0105] The basic concepts have been described above. Obviously, for those skilled in the art, the above invention disclosure is only used as an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0106] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0107] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this application, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0108] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0109] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions may be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A nozzle installation structure, characterized in that: include: A receiver base, wherein the outside of the receiver base has an external base thread and the inside of the receiver base has an internal base thread; An adjusting sleeve, wherein the inner wall of the adjusting sleeve is provided with an adjusting sleeve internal thread, and the adjusting sleeve is rotatably mounted on the outside of the casing base through the adjusting sleeve internal thread and the base external thread; and The nozzle sleeve is sleeved on the outside of the nozzle, and the outer wall of the nozzle sleeve has an outer nozzle sleeve thread. The nozzle sleeve is rotatably mounted inside the casing base through the outer nozzle sleeve thread and the inner base thread. Wherein, the external thread of the nozzle sleeve and the internal thread of the adjustment sleeve have opposite rotation directions.

2. The mounting structure according to claim 1, characterized in that: The pitch of the external thread of the nozzle sleeve is different from that of the internal thread of the adjustment sleeve.

3. The mounting structure according to claim 1, characterized in that: It also includes a plurality of sealing gaskets, which are located between the nozzle and the nozzle sleeve and / or between the adjustment sleeve and the nozzle sleeve.

4. The mounting structure according to claim 1, characterized in that: It also includes a C-shaped ring located between the nozzle sleeve and the receiver base.

5. The mounting structure according to claim 4, characterized in that: The interior of the casing base also includes a guide slope, and the guide slope is used to install the C-ring.

6. The mounting structure according to claim 1, characterized in that: The inner wall of the nozzle sleeve is also provided with an inner thread of the nozzle sleeve, and the nozzle sleeve is sleeved on the outside of the nozzle through the inner thread of the nozzle sleeve.

7. The mounting structure according to claim 1, characterized in that: It also includes a plurality of lock wires located on the adjustment sleeve and the nozzle sleeve, which are used to prevent the adjustment sleeve and the nozzle sleeve from moving relative to the receiver base after the nozzle is adjusted to have an installation depth.

8. A method for installing an electric nozzle, suitable for adjusting the installation depth of the electric nozzle in the combustion chamber of an engine, characterized in that: The steps include: The adjusting sleeve is rotatably mounted on the outside of the casing base through the adjusting sleeve internal thread located on the inner wall of the adjusting sleeve, and the adjusting sleeve is screwed in the direction close to the combustion chamber; The nozzle sleeve equipped with the nozzle is rotatably mounted inside the casing base via the nozzle sleeve external thread located on the outer wall of the nozzle sleeve; Adjusting the installation depth of the nozzle to a preset depth; and Keeping the nozzle sleeve stationary, the adjustment sleeve is rotated out from the bottom of the casing base in a direction away from the combustion chamber until it contacts and is pressed against the nozzle sleeve, thereby fixing the nozzle at the preset depth.

9. The installation method according to claim 8, characterized in that: The method also includes locking a plurality of locking wires located on the electric nozzle, the adjustment sleeve and the electric nozzle sleeve after the adjustment sleeve contacts and is pressed against the electric nozzle sleeve, so as to fix the electric nozzle at the preset depth.

10. The installation method according to claim 8, characterized in that: The adjustable range of the installation depth is 2 to 4 mm.

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