Combustion chamber flame tube assembling device

Abstract

The utility model discloses a combustion chamber flame tube assembling device, and relates to the technical field of assembling tools. The combustor flame tube assembling device comprises a mounting box; the front end of the mounting box is used for being connected with the combustion chamber casing; after the mounting box is connected with the combustion chamber casing, the axial lead of the mounting box coincides with the axial lead of the mounting cavity; the mounting seat can be detachably connected with the rear end of the mounting box; an extrusion container; the driving part is arranged in the mounting base and used for applying extrusion force in the first direction to the extrusion cylinder; and the first direction is parallel to the axis of the mounting cavity. According to the assembling device, the mounting process of the flame tube can be guided through the mounting box, uniform pressing force is applied to the flame tube through the driving piece and the extrusion barrel, the flame tube is pressed into the mounting cavity of the combustion chamber case, and the risk that the flame tube deforms or is damaged in the assembling process is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of assembly tools, in particular to a combustion chamber flame tube assembly device. BACKGROUND

[0002] In the prior art, some light aviation modified gas turbines are composed of multiple single-tube combustion chambers. Since each single-tube combustion chamber is inclined to the axis of the whole machine at a certain angle, the assembly and disassembly of the small casing, flame tube, natural gas nozzle and pipeline and other combustion chamber casing external components of the combustion chamber can be performed in the state of the whole machine, which is beneficial to reducing the difficulty of operation and maintenance of the combustion chamber. Among them, as shown in the figure, the front end of the flame tube is fixed by elastic hula ring plug-in with the transition section of the combustion chamber casing, and the two are interference fit. When assembling the flame tube, the flame tube needs to be pressed into the mounting cavity on the combustion chamber casing by external force. Figure 1

[0003] The existing flame tube assembly method is generally a manual knock-in method. Since the flame tube is a thin-walled welded structure, if the impact force on the local flame tube is too large during manual knock-in, the flame tube is prone to deformation and damage. And manual knock-in is difficult to make the flame tube concentric with the mounting cavity on the combustion chamber casing, and needs to be adjusted multiple times, further increasing the risk of deformation and damage of the flame tube. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to provide a combustion chamber flame tube assembly device to solve the technical problem that the existing assembly tool (i.e. hammer) is easy to cause deformation and damage of the flame tube.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A combustion chamber flame tube assembly device, the combustion chamber comprising a combustion chamber casing, the combustion chamber casing being provided with a mounting cavity; the mounting cavity and the flame tube are interference fit; the combustion chamber flame tube assembly device comprises:

[0007] a mounting box; the front end of the mounting box is used to connect with the combustion chamber casing; after the mounting box is connected with the combustion chamber casing, the axis of the mounting box is coincided with the axis of the mounting cavity; in use, the flame tube is placed inside the mounting box;

[0008] a mounting seat, which can be detachably connected with the rear end of the mounting box;

[0009] a pressing cylinder; in use, the pressing cylinder is buckled to the rear end of the flame tube;

[0010] a driving member arranged inside the mounting seat, used to apply a pressing force to the pressing cylinder in a first direction; the first direction is parallel to the axis of the mounting cavity.​

[0011] As a specific scheme of the technical scheme in the application, the driving member comprises any one of an electric push rod, a hydraulic push rod and a jack.

[0012] As a specific scheme of the technical scheme in the application, the driving member is a jack, and the mounting seat is provided with an operation port, which is used for extending a rocker handle of the jack to the outside of the mounting seat.

[0013] As a specific scheme of the technical scheme in the application, the inside of the mounting seat is provided with a limiting groove body, and in use, the driving member is inserted into the inside of the limiting groove body, which is used for limiting the relative displacement of the driving member and the mounting seat along the radial direction of the limiting groove body.

[0014] As a specific scheme of the technical scheme in the application, the inner diameter of the limiting groove body is greater than the outer diameter of the rear end of the driving member, and the limiting groove body is further provided with a locking bolt, which penetrates the limiting groove body and can form a radial contact force with the side wall of the driving member.

[0015] As a specific scheme of the technical scheme in the application, the front end of the driving member is provided with a pressure-bearing disc, which is used for increasing the contact area between the driving member and the extrusion cylinder.

[0016] As a specific scheme of the technical scheme in the application, the mounting case is an aluminum case; the mounting case comprises a first machine case and a second machine case connected in sequence along a first direction; the first direction is directed from the rear end to the front end of the flame tube; the inner diameter of the first machine case is greater than the maximum outer diameter of the flame tube; the inner diameter of the second machine case is equal to the maximum outer diameter of the flame tube, and the length of the second machine case along the first direction is less than the length of the flame tube along the first direction.

[0017] As a specific scheme of the technical scheme in the application, the inner diameter of the front end of the first machine case along the first direction decreases, and the minimum inner diameter of the first machine case is equal to the inner diameter of the second machine case.

[0018] As a specific scheme of the technical scheme in the application, the mounting case and the combustion chamber case are detachably connected through bolts; one of the bolt holes connected with the combustion chamber case is offset; the outer side wall of the extrusion cylinder is provided with a sliding groove extending along the first direction; the side wall of the mounting case is provided with a first through hole; a limiting pin is movably inserted into the first through hole, and the limiting pin can extend into the sliding groove; and the limiting pin is used for limiting the circumferential rotation of the extrusion cylinder.

[0019] As a specific scheme of the technical scheme in the application, the angle of the bolt hole offset is greater than or equal to 1° and less than or equal to 3°.

[0020] As a specific scheme of the technical scheme in the application, the sliding groove is provided with a second through hole, the second through hole is matched with the limiting pin, and the length of the limiting pin is sufficient to extend to the inside of the second through hole in use.

[0021] As a specific scheme of the technical scheme in the application, the inner side wall of the mounting box is provided with a first limiting ring, the inner diameter of the first limiting ring is greater than the outer diameter of the flame tube; the rear end of the extrusion cylinder is provided with a second limiting ring; the outer diameter of the second limiting ring is less than the maximum inner diameter of the mounting box and greater than the inner diameter of the first limiting ring.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] The assembly device provided in the application can guide the mounting process of the flame tube on the mounting box, and apply uniform pressing force on the flame tube through the driving member and the extrusion cylinder to press the flame tube into the mounting cavity of the combustion chamber case. Compared with the manual way of knocking the flame tube into the mounting cavity of the combustion chamber case, the assembly device provided in the application reduces the risk of deformation or damage of the flame tube during assembly. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a certain type of gas turbine flame tube and combustion chamber case after assembly;

[0025] Figure 2 It is a three-dimensional schematic diagram of a combustion chamber flame tube assembly device according to an embodiment of the application;

[0026] Figure 3 It is Figure 2 It is a sectional view schematic diagram of the combustion chamber flame tube assembly device in use;

[0027] Figure 4 It is a three-dimensional schematic diagram of another combustion chamber flame tube assembly device according to an embodiment of the application;

[0028] Figure 5 It is Figure 4 It is a sectional view schematic diagram of the combustion chamber flame tube assembly device in use;

[0029] Figure 6 It is Figure 5 It is an enlarged view of part A;

[0030] Figure 7 It is Figure 5 It is an enlarged view of part B;

[0031] Figure 8 A projection view of the installation case (the projection direction is parallel to the axial direction of the installation case) proposed in an embodiment of the present application.

[0032] In the figure: 1, combustion chamber case; 2, flame tube; 3, mounting seat; 31, limiting groove body; 32, operation port; 33, locking bolt; 4, installation case; 41, first case; 42, second case; 43, first limiting ring; 44, first through hole; 45, limiting pin; 46, observation hole; 5, driving member; 51, pressure bearing disc; 6, extrusion cylinder; 61, second limiting ring; 62, sliding groove; 63, second through hole. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] It should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, it should be understood that, for the convenience of description, the sizes of the various components shown in the drawings are not drawn in accordance with the actual proportional relationship, for example, the thickness or width of certain layers can be exaggerated relative to other layers.

[0036] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not need to be further specifically discussed and described in the description of subsequent drawings.

[0037] Before understanding the embodiments proposed in the present application, it needs to be clear that in the embodiments of the present application, various parts (for example: the mounting box 4, the driving member 5, the extrusion cylinder 6 and the flame cylinder 2, etc.) are arranged along the axial direction of the mounting cavity in the combustion chamber case 1 (that is, the first direction in the following). That is, these parts have two ends along the first direction. In the following, the end of these parts close to the combustion chamber case 1 along the first direction is named as the front end; the end of these parts away from the combustion chamber case 1 along the first direction is named as the rear end, and the subsequent description is omitted.

[0038] In order to solve the technical problem that the existing assembly tool is easy to cause the deformation and damage of the flame cylinder proposed in the background art, an embodiment of a combustion chamber flame cylinder assembly device is proposed in the present application. In the embodiment of the present application, the combustion chamber includes a combustion chamber case 1, and the combustion chamber case 1 is provided with a mounting cavity. In use, the mounting cavity is in interference fit with the flame cylinder 2. In the embodiment, the combustion chamber flame cylinder assembly device includes a mounting seat 3, a mounting box 4, a driving member 5 and an extrusion cylinder 6. In use, as shown in Figure 3 the front end of the mounting box 4 is used to be connected with the combustion chamber case 1. After the mounting box 4 is connected with the combustion chamber case 1, the axis of the mounting box 4 coincides with the axis of the mounting cavity. The mounting seat 3 can be detachably connected with the rear end of the mounting box 4. The extrusion cylinder 6 is buckled to the rear end of the flame cylinder 2. The driving member 5 is arranged in the interior of the mounting seat 3 and is used to apply an extrusion force along the first direction to the extrusion cylinder 6. The first direction is parallel to the axis of the mounting cavity.

[0039] In use, first, the mounting box 4 is connected with the combustion chamber case 1; then the extrusion cylinder 6 is buckled to the rear end of the flame cylinder 2 to form a first assembly, and the driving member 5 is arranged in the interior of the mounting seat 3 to form a second assembly; then the first assembly is arranged in the interior of the mounting box 4, and the mounting seat 3 in the second assembly is detachably connected with the rear end of the mounting box 4; finally, the driving member 5 applies the extrusion force along the first direction to the extrusion cylinder 6, and further the extrusion cylinder 6 can transmit the extrusion force to the flame cylinder 2, so as to press the flame cylinder 2 into the mounting cavity of the combustion chamber case 1.

[0040] It needs to be clear that the embodiment can guide the mounting process of the flame cylinder 2 by the mounting box 4, and apply uniform pressing force to the flame cylinder 2 by the driving member 5 and the extrusion cylinder 6, so as to press the flame cylinder 2 into the mounting cavity of the combustion chamber case 1. Relative to the way of manually knocking the flame cylinder 2 into the mounting cavity of the combustion chamber case 1. The combustion chamber flame cylinder assembly device proposed in the embodiment reduces the risk of deformation or damage of the flame cylinder in the assembly process.

[0041] In the embodiment, the mounting box 4 can be riveted with the combustion chamber case 1. It should be noted that the combustion chamber case 1 is provided with threaded holes for mounting the flame tube case, and in order to reduce the difficulty of mounting and dismounting the mounting box 4, in the embodiment, the mounting box 4 and the combustion chamber case 1 can be threadedly connected through the threaded holes and bolts. Threadedly connecting the two parts by bolts is a mature technology, and will not be described here. Compared with the mounting box 4 and the combustion chamber case 1 fixed by welding, the mounting box 4 and the combustion chamber case 1 threadedly connected are easy to mount and dismount.

[0042] In the embodiment, the mounting seat 3 and the mounting box 4 can be detachably connected in any reasonable manner. For example, the mounting seat 3 and the mounting box 4 can be detachably connected by a pipe support, which is a mature technology and will not be described here. The mounting seat 3 and the mounting box 4 can also be detachably connected by a flange as shown in Figure 2 .

[0043] It should be noted that in the embodiment, the extrusion cylinder 6 is not limited in formation and structure, and only needs to be able to transmit the extrusion force from the driving member 5 to the flame tube 2. Specifically, the extrusion cylinder 6 can be a profiling member that can be matched with the rear end of the flame tube 2. That is, the hollow part of the extrusion cylinder 6 is exactly equal to the protruding part of the rear end of the flame tube 2. Such an extrusion cylinder 6 is beneficial to uniformly transmitting the extrusion force from the driving member 5 to the flame tube 2, and can effectively avoid relative rotation between the extrusion cylinder 6 and the flame tube 2. It should be noted that in order to ensure that the flame tube 2 is not deformed during extrusion, when designing the extrusion cylinder 6, the extrusion cylinder 6 can be made to contact the face with thicker wall thickness or larger area among the rear end faces of the flame tube 2, and not contact the face with thinner wall thickness or smaller area among the rear end faces of the flame tube 2.

[0044] In the embodiment, the driving member 5 is not limited, and only needs to be able to apply an extrusion force in the first direction to the extrusion cylinder 6. For example, the driving member 5 can be an electric push rod or a hydraulic push rod as shown in Figure 5 . It should be noted that if the driving member 5 is an electric push rod or a hydraulic push rod, an electric appliance such as a power supply or a hydraulic station needs to be configured. These electric appliances make the driving member 5 more complex, which is not convenient for daily mobile use and increases the use cost. In order to facilitate the mobile use of the driving member 5 and reduce the use cost of the driving member 5, in an embodiment of the application, the driving member 5 can be a jack as shown in Figure 3 .

[0045] It should be noted that if the driving member 5 is a jack, the jack can be a manual jack as shown in Figure 3As shown, the mounting base 3 may also be provided with an operating port 32, which allows the jack's rocker handle to extend to the outside of the mounting base 3. In use, the operator can manually operate the jack to apply pressure to the compression cylinder 6 through the extended rocker handle.

[0046] In this embodiment, there are no restrictions on the shape and structure of the mounting base 3, as long as it can accommodate the drive component 5. For example, the mounting base 3 can be a square shell shape, or it can be... Figure 2 to Figure 5 The cylindrical shell shape shown is also possible. Of course, in other embodiments of this application, the mounting base 3 can also be designed as a bracket-shaped base.

[0047] In this embodiment, as Figure 3 As shown, during use, the front end of the driving member 5 abuts against the extrusion cylinder 6, and the rear end of the driving member 5 abuts against the mounting base 3. If the contact force is large, the friction between the driving member 5 and the extrusion cylinder 6 or the mounting base 3 will also be large, meaning the driving member 5 will not easily slide radially. If the contact force is small, the friction between the driving member 5 and the extrusion cylinder 6 or the mounting base 3 will also be small. If the friction between the driving member 5 and the extrusion cylinder 6 or the mounting base 3 is small, the driving member 5 will easily slide radially. If the driving member 5 moves significantly radially, it may not be able to apply force evenly to the extrusion cylinder 6, that is, it may not be able to apply force evenly to the flame tube 2. In order to prevent the driving member 5 from sliding radially during use, in one embodiment of this application, such as Figure 3 As shown, a limiting groove 31 can be provided inside the mounting base 3. In use, the rear end of the drive component 5 is inserted into the limiting groove 31. The limiting groove 31 is used to limit the relative displacement between the drive component 5 and the mounting base 3 along the radial direction of the limiting groove 31. Figure 3 As shown, under the limiting action of the limiting groove 31, even if the friction between the driving member 5 and the extrusion cylinder 6 or the mounting base 3 is small, the driving member 5 is difficult to slide along its own radial direction.

[0048] In this embodiment, the inner diameter of the limiting groove 31 can be slightly smaller than the outer diameter of the rear end of the driving member 5. It is easy to understand that if the inner diameter of the limiting groove 31 is less than or equal to the outer diameter of the rear end of the driving member 5, the driving member 5 and the limiting groove 31 will easily form an interference fit. If the driving member 5 and the limiting groove 31 form an interference fit, it will be difficult to separate the driving member 5 from the mounting base 3 laterally. If the inner diameter of the limiting groove 31 is greater than the outer diameter of the rear end of the driving member 5, the driving member 5 will still have a certain amount of movement space along the radial direction of the limiting groove 31. As can be seen from the preceding text, if the driving member 5 moves radially along the limiting groove 31 (i.e., the radial direction of the driving member 5), it will be detrimental to the driving member 5 applying force evenly to the extrusion cylinder 6 and the flame cylinder 2.

[0049] For the sake of easily separating the driving member 5 from the mounting base 3, and for the sake of easily applying force to the extrusion cylinder 6 and the flame cylinder 2, in an embodiment of the present application, as shown in Figure 3 The inner diameter of the limiting groove 31 can be greater than the outer diameter of the rear end of the driving member 5, and the limiting groove 31 is further provided with a locking bolt 33. The locking bolt 33 penetrates the limiting groove 31, and the locking bolt 33 can form a radial contact force with the side wall of the driving member 5.

[0050] When in use, since the inner diameter of the limiting groove 31 is greater than the outer diameter of the rear end of the driving member 5, it is easy to insert the driving member 5 into the limiting groove 31 or pull it out of the limiting groove 31. After the driving member 5 is inserted into the limiting groove 31, the locking bolt 33 can be tightened to generate a sufficient contact force between the locking bolt 33 and the driving member 5, which can limit the movement of the driving member 5 in the radial direction of the limiting groove 31. That is, the embodiment is easy to separate the driving member 5 from the mounting base 3, and is also easy to apply force to the extrusion cylinder 6 and the flame cylinder 2.

[0051] It should be noted that in the embodiment, the rear end of the extrusion cylinder 6 directly contacts the flame cylinder 2. In order to avoid the hardness of the extrusion cylinder 6 being too large and damaging the flame cylinder 2, the extrusion cylinder 6 can be made of aluminum or copper or other metal materials with low hardness.

[0052] It should be noted that in the application scenario where the hardness of the extrusion cylinder 6 is low, if the extrusion cylinder 6 is not uniformly stressed, the extrusion cylinder 6 is prone to deformation. If the extrusion cylinder 6 is deformed, the flame cylinder 2 is prone to be damaged. In order to avoid the extrusion cylinder 6 from being deformed due to uneven stress, in an embodiment of the present application, as shown in Figure 3 The front end of the driving member 5 can be further provided with a pressure receiving disc 51, which is used to increase the contact area between the driving member 5 and the extrusion cylinder 6. The greater the contact area between the driving member 5 and the extrusion cylinder 6, the more uniform the stress on the extrusion cylinder 6. In the embodiment, the shape and structure of the pressure receiving disc 51 are not limited, as long as the pressure receiving disc 51 can increase the contact area between the driving member 5 and the extrusion cylinder 6, for example, the pressure receiving disc 51 can be a square block or a disc.

[0053] In the embodiments of the present application, the shape and configuration of the mounting box 4 are not limited, as long as the mounting box 4 can guide the flame tube 2 so that the flame tube 2 can be concentric with the mounting cavity on the combustion chamber case 1. It should be noted that the closer the inner diameter of the mounting box 4 to the outer diameter of the flame tube 2, the smaller the moving space of the flame tube 2 in the radial direction of the mounting box 4, that is, the more stable the mounting box 4 can guide the flame tube 2. That is, the closer the inner diameter of the mounting box 4 to the outer diameter of the flame tube 2, the better the concentricity of the flame tube 2 and the mounting cavity on the combustion chamber case 1 during assembly. In an embodiment of the present application, in order to make the flame tube 2 and the mounting cavity on the combustion chamber case 1 have better concentricity, the inner diameter of the mounting box 4 can be equal to the outer diameter of the flame tube 2.

[0054] It should be noted that the inner diameter of the mounting box 4 is equal to the outer diameter of the flame tube 2, which can make the mounted flame tube 2 and the mounting cavity on the combustion chamber case 1 have better concentricity, but because the gap between the mounting box 4 and the flame tube 2 is small, it is difficult to disassemble the mounting box 4. And during the disassembly of the mounting box 4, because the mounting box 4 fully covers the flame tube 2, the operator cannot observe the relative position between the mounting box 4 and the flame tube 2, so it is easy to cause damage to the flame tube 2. In order for the mounted flame tube 2 and the mounting cavity on the combustion chamber case 1 to have better concentricity and not to easily damage the flame tube 2 during disassembly of the mounting box 4, in an embodiment of the present application, the mounting box 4 can be an aluminum box, and as shown in Figure 5 The mounting box 4 includes a first case 41 and a second case 42 connected in sequence along a first direction, and the first direction is directed from the rear end to the front end of the flame tube 2. The inner diameter of the first case 41 is greater than the maximum outer diameter of the flame tube 2, and the inner diameter (i.e., the inner diameter D as shown in Figure 6 The inner diameter of the second case 42 is equal to the maximum outer diameter of the flame tube 2 (i.e., the outer diameter d as shown in Figure 6 ).

[0055] In the present embodiment, the second case 42 is close to the combustion chamber case 1, and the inner diameter of the second case 42 is equal to the maximum outer diameter of the flame tube 2, that is, the second case 42 can realize the centering of the flame tube 2 and the mounting cavity. Because the first case 41 is greater than the maximum outer diameter of the flame tube 2, it is easy to disassemble the first case 41 without damaging the flame tube 2. Relative to the integral mounting box 4, after the first case 41 is disassembled, even if the inner diameter of the second case 42 is equal to the outer diameter of the flame tube 2, because the length of the second case 42 in the axial direction (i.e., the first direction) is smaller than the axial length of the flame tube 2, the flame tube 2 is visible to the naked eye, and thus it is convenient to disassemble the second case 42.

[0056] It should be noted that in the embodiment where the inner diameters of the first casing 41 and the second casing 42 are inconsistent, a step is likely to be formed at the joint of the first casing 41 and the second casing 42. If a step is formed at the joint of the first casing 41 and the second casing 42, it is difficult to smoothly insert the flame tube 2 into the second casing 42 from the first casing 41. In order to smoothly insert the flame tube 2 into the second casing 42 from the first casing 41 in the case where the inner diameters of the first casing 41 and the second casing 42 are inconsistent, in the embodiment, as shown in Figure 5 the inner diameter of the front end of the first casing 41 decreases in the first direction, and the minimum inner diameter of the first casing 41 is equal to the inner diameter of the second casing 42. That is, in the present embodiment, no step is formed at the joint of the first casing 41 and the second casing 42, and under the guidance of the front end of the first casing 41, the flame tube 2 can be smoothly inserted into the second casing 42.

[0057] It should be noted that in the application scenario where the projection of the flame tube 2 along its axial direction is not circular, the flame tube 2 needs to be inserted into the installation cavity at a fixed angle. If the insertion angle of the flame tube 2 has an error, the flame tube 2 is likely to be squeezed. In order to fix the angle of the flame tube 2 in each insertion process, in the embodiment of the present application, the installation casing 4 and the combustion chamber casing 1 can be detachably connected by bolts, and one bolt hole through which the installation casing 4 and the combustion chamber casing 1 are connected is offset. As shown in Figure 7 the outer side wall of the extrusion tube 6 is provided with a sliding groove 62 extending in the first direction, the side wall of the installation casing 4 is provided with a first through hole 44, a limiting pin 45 is movably inserted into the first through hole 44, and the limiting pin 45 can extend into the sliding groove 62. The limiting pin 45 is used to limit the circumferential rotation of the extrusion tube 6.

[0058] In the present embodiment, since one bolt hole of the mounting box 4 is offset from the bolt hole of the combustor case 1, if the mounting angle of the mounting box 4 is incorrect, the mounting box 4 and the combustor case 1 cannot be connected smoothly. If the mounting angle between the pressing cylinder 6 and the mounting box 4 is incorrect, the limit pin 45 cannot be inserted into the sliding groove 62 smoothly, and if the limit pin 45 cannot be inserted into the sliding groove 62, the limit pin 45 protrudes from the mounting box 4 and is easy to be found by the operator. As known from the foregoing, the pressing cylinder 6 is a profiled part, that is, the pressing cylinder 6 cannot rotate relative to the flame tube 2. If the mounting angle between the pressing cylinder 6 and the mounting box 4 is fixed, the insertion angle between the flame tube 2 and the mounting cavity is also fixed. In other words, in the present embodiment, the operator only needs to observe whether the limit pin 45 is inserted into the sliding groove 62 (that is, observe the height of the limit pin 45 protruding from the mounting box 4) to ensure that the flame tube 2 can be inserted into the mounting cavity at the same angle in each assembly process, and the limit pin 45 can limit the circumferential rotation of the pressing cylinder 6. If the pressing cylinder 6 cannot rotate circumferentially, the flame tube 2 also cannot rotate circumferentially during the entire mounting process, that is, the insertion angle of the flame tube 2 can always be kept fixed.

[0059] In the present embodiment, the offset of one bolt hole on the mounting box 4 means that the other bolt holes on the mounting box 4 are uniformly distributed around the axis of the mounting box 4, and the offset bolt hole is not uniformly distributed compared with the other bolt holes. Figure 8 A schematic view of the offset of one bolt hole on the mounting box 4 is provided. As shown in Figure 8 , the mounting box 4 has six bolt holes, and the other five bolt holes are all uniformly distributed. If the other bolt hole is also uniformly distributed, the position of the bolt hole is shown by the dashed circle hole in Figure 8 . However, the actual position of the bolt hole (that is, the gray circle hole shown in Figure 8 ) is not at the dashed circle hole, so the bolt hole is the offset bolt hole on the mounting box 4.

[0060] It is easy to understand that in the application scenario where the offset angle of the bolt hole is large, if the mounting box 4 and the combustor case 1 are not correctly aligned, several bolt holes cannot be mounted with bolts. It should be noted that if the offset angle of the bolt hole (that is, the angle between the dashed circle hole and the gray circle hole shown in Figure 8The greater the angle C) shown, the more uneven the force on the connection between the mounting box 4 and the combustion chamber case 1, that is, the mounting box 4 and the combustion chamber case 1 cannot form a stable connection. If the offset angle of the bolt hole is small (referring to the case where the bolt holes are uniformly distributed), it is difficult for the operator to determine whether the mounting box 4 is installed in the correct way during installation. In order to make the force on the connection between the mounting box 4 and the combustion chamber case 1 more uniform, and to make it easier for the operator to accurately align the mounting box 4 and the combustion chamber case 1 for installation, the inventor has found through a large number of experiments that the offset angle of the bolt hole can be set to be greater than or equal to 1° and less than or equal to 3°.

[0061] It should be noted that in some application scenarios, the insertion depth of the flame tube 2 into the installation cavity also needs to be controlled. In order to be able to control the insertion depth of the flame tube 2, in an embodiment of the present application, as shown in Figure 7 The inner side wall of the mounting box 4 is provided with a first limiting ring 43, and the inner diameter of the first limiting ring 43 is greater than the outer diameter of the flame tube 2. The rear end of the extrusion cylinder 6 is provided with a second limiting ring 61, and the outer diameter of the second limiting ring 61 is less than the maximum inner diameter of the mounting box 4, and the outer diameter of the second limiting ring 61 is greater than the inner diameter of the first limiting ring 43.

[0062] In use, since the inner diameter of the first limiting ring 43 is greater than the outer diameter of the flame tube 2, the flame tube 2 can smoothly pass through the first limiting ring 43. Since the outer diameter of the second limiting ring 61 is greater than the inner diameter of the first limiting ring 43, when the driving member 5 pushes the extrusion cylinder 6 to the position where the second limiting ring 61 and the first limiting ring 43 abut, the extrusion cylinder 6 cannot be further pushed in the first direction, that is, the flame tube 2 cannot be further pushed in the first direction. In other words, if the extrusion cylinder 6 is pushed to the position where the second limiting ring 61 and the first limiting ring 43 abut each time the flame tube 2 is installed, the depth of the flame tube 2 inserted into the installation cavity can be ensured to be the same each time.

[0063] In order to enable the operator to clearly understand whether the insertion depth of the flame tube 2 is appropriate, in an embodiment of the present application, as shown in Figure 3 An observation hole 46 can be provided on the mounting box 4 for the operator to observe the insertion depth of the flame tube 2. In order to make it easier for the operator to observe the insertion depth of the flame tube 2, in an embodiment of the present application, as shown in Figure 7As shown, the chute 62 can also be provided with a second through hole 63, which is matched with the limiting pin 45, and the length of the limiting pin 45 is sufficient to extend into the second through hole 63 in use. In use, if the pressing cylinder 6 is pushed to abut against the second limiting ring 61 and the first limiting ring 43, and the limiting pin 45 can be inserted into the second through hole 63, it indicates that the insertion depth of the flame cylinder 2 is appropriate. On the contrary, if the limiting pin 45 cannot be inserted into the second through hole 63, it indicates that the flame cylinder 2 is not inserted into the installation cavity. Thus, the assembly device for the combustion chamber flame cylinder is introduced.

[0064] The embodiment of the assembly device for the combustion chamber flame cylinder can guide the installation process of the flame cylinder through the installation box, and apply uniform pressing force to the flame cylinder through the driving member and the pressing cylinder, so as to press the flame cylinder into the installation cavity of the combustion chamber case. Compared with the manual knocking of the flame cylinder into the installation cavity of the combustion chamber case, the assembly device for the combustion chamber flame cylinder reduces the risk of deformation or damage of the flame cylinder in the assembly process.

[0065] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A combustion chamber flame tube assembly device, the combustion chamber comprising a combustion chamber casing (1) provided with a mounting cavity; the mounting cavity is interference fit with the flame tube (2); characterized in that, The combustion chamber flame tube (2) assembly device comprises: An installation box (4); the front end of the installation box (4) is used for being connected with the combustion chamber case (1); after the installation box (4) is connected with the combustion chamber case (1), the axis line of the installation box (4) coincides with the axis line of the installation cavity; in use, the flame tube (2) is placed in the inside of the installation box (4); An installation seat (3) capable of being detachably connected with the rear end of the installation box (4); A pressing cylinder (6); in use, the pressing cylinder (6) is buckled to the rear end of the flame tube (2); A driving member (5) arranged in the inside of the installation seat (3) and used for applying a pressing force in a first direction to the pressing cylinder (6); the first direction is parallel to the axis line of the installation cavity.

2. The combustor flame tube assembly of claim 1, wherein, The driving member (5) comprises any one of an electric push rod, a hydraulic push rod and a jack.

3. The combustor flame tube assembly of claim 2, wherein, When the driving member (5) is a jack, the installation seat (3) is provided with an operation port (32) used for the rocker handle of the jack to extend to the outside of the installation seat (3).

4. The combustor flame tube assembly of claim 1, wherein, The inside of the installation seat (3) is provided with a limiting groove body (31); in use, the driving member (5) is inserted into the inside of the limiting groove body (31) and used for limiting the relative displacement of the driving member (5) and the installation seat (3) in the radial direction of the limiting groove body (31).

5. The combustor flame tube assembly of claim 4, wherein, The inner diameter of the limiting groove body (31) is greater than the outer diameter of the rear end of the driving member (5), and the limiting groove body (31) is further provided with a locking bolt (33) penetrating through the limiting groove body (31) and capable of forming a radial contact force with the side wall of the driving member (5).

6. The combustor flame tube assembly of claim 1, wherein, The front end of the driving member (5) is provided with a pressure bearing disc (51) used for increasing the contact area between the driving member (5) and the pressing cylinder (6).

7. The combustor flame tube assembly of any one of claims 1-6, wherein, The installation box (4) is an aluminum box; the installation box (4) comprises a first case (41) and a second case (42) connected in sequence in a first direction; the first direction is from the rear end to the front end of the flame tube (2); the inner diameter of the first case (41) is greater than the maximum outer diameter of the flame tube (2); the inner diameter of the second case (42) is equal to the maximum outer diameter of the flame tube (2), and the length of the second case (42) in the first direction is less than the length of the flame tube (2) in the first direction.

8. The combustor flame tube assembly of claim 7, wherein, The inner diameter of the first case (41) decreases in the first direction from the front end, and the minimum inner diameter of the first case (41) is equal to the inner diameter of the second case (42).

9. The combustor flame tube assembly of any one of claims 1-6, wherein, The mounting box (4) is detachably connected with the combustion chamber case (1) by bolts; one bolt hole of the mounting box (4) is offset from the combustion chamber case (1); the outer side wall of the extrusion cylinder (6) is provided with a sliding groove (62) extending in a first direction; the side wall of the mounting box (4) is provided with a first through hole (44); a limiting pin (45) is movably inserted into the first through hole (44), and the limiting pin (45) can extend into the sliding groove (62); the limiting pin (45) is used for limiting the circumferential rotation of the extrusion cylinder (6).

10. The combustion chamber flame cone assembly of claim 9, wherein, The angle of the offset bolt hole is greater than or equal to 1° and less than or equal to 3°.

11. The combustor flame tube assembly of claim 9, wherein, The sliding groove (62) is provided with a second through hole (63) matched with the limiting pin (45), and the length of the limiting pin (45) is sufficient to extend into the second through hole (63) in use.

12. The combustor flame tube assembly of claim 9, wherein, The inner side wall of the mounting box (4) is provided with a first limiting ring (43), the inner diameter of the first limiting ring (43) is greater than the outer diameter of the flame tube (2); the rear end of the extrusion cylinder (6) is provided with a second limiting ring (61); the outer diameter of the second limiting ring (61) is smaller than the maximum inner diameter of the mounting box (4) and greater than the inner diameter of the first limiting ring (43).

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