Sealing test equipment

Abstract

The invention discloses sealing test equipment, which is applied to a controllable-pitch propeller and comprises a fixing assembly, a sealing test assembly, a sealing test assembly and a sealing test assembly, and is characterized in that the fixing assembly is used for being connected with a controllable-pitch propeller shaft to be subjected to sealing test; the oil pipe is sleeved with the sealing assembly, the first end of the sealing assembly is connected with the fixing assembly, and the second end of the sealing assembly is provided with a first through hole aligned with the oil filling opening; and the plug cock is arranged in the first through hole in a manner of being capable of being opened and closed. According to the sealing test equipment provided by the invention, the technical problems of inconvenient operation and difficult observation of the sealing test in the prior art are solved, and the sealing test of the inner oil pipe of each shaft section of the controllable-pitch propeller shaft system can be simultaneously completed in advance in the field.

Description

Technical Field

[0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a sealing test device. Background Art

[0002] The adjustable pitch propeller is called the adjustable pitch propeller for short. It can adjust the pitch of the blades to change the ship speed, realize the forward and reverse operation of the ship, and can match different speeds, so that the ship can achieve better fuel efficiency and operability under various working conditions. The adjustable pitch propeller mainly includes blades, a hub and a propeller shaft. The blades are fixed on the crank plate installed on the hub. A pitch cylinder is arranged in the hub. When driving forward or reverse, the hydraulic oil enters the reverse oil chamber or the forward oil chamber of the pitch change, respectively, and pushes the pitch piston in the pitch cylinder to move, thereby driving the crank plate and the blades to change the pitch of the blades, and realizing the control operation of the pitch change of the adjustable pitch propeller blades in forward and reverse operation, so as to achieve the purpose of changing the speed of the ship.

[0003] The adjustable pitch propeller blades, propeller hub and part of the propeller shaft are installed outside the ship's cabin. They are underwater equipment that works in the water all the time. Once a failure occurs, the cost of maintenance is extremely high. Therefore, the oil pipes in the adjustable pitch propeller shaft system must be tested for tightness before use to check whether the performance indicators of the adjustable pitch propeller, propeller hub and propeller shaft system meet the design requirements and use requirements.

[0004] In the existing technology, the tightness test of the inner pipe section of the adjustable pitch propeller shaft is carried out after the entire shaft system is assembled (not connected to the gearbox output end or the thrust bearing output end), and the upper end face of the shaft connected to the gearbox output end or the thrust bearing output end is blocked by a blind flange device on board, and then the oil filling tightness test is carried out through the oil filling port of the oil pipe. This is inconvenient to operate and difficult to observe in a narrow engine room, and also wastes a lot of manpower, material resources and time in the assembly process of the entire shaft system. Summary of the invention

[0005] The purpose of the present invention is to provide a tightness test equipment, which solves the technical problems of inconvenient operation and difficult observation of tightness test in the prior art, and can complete the tightness test of the inner oil pipes of each shaft section of the controllable pitch propeller shaft system in the indoor field in advance at the same time.

[0006] The present invention provides a tightness test device, which is applied to a pitch controllable propeller, wherein the pitch controllable propeller comprises a blade, a hub and a pitch controllable propeller shaft, wherein the blade is fixedly mounted on a crank disk of the hub, a pitch change oil cylinder is arranged in the hub, two adjacent sections of the pitch changeable propeller shaft are connected via a coupling, an oil pipe is arranged in the pitch changeable propeller shaft, one end of the oil pipe is connected to the pitch change oil cylinder, and the other end is an oil filling port, the tightness test device is sealed and connected to the end of the pitch changeable propeller shaft, and is used to test the tightness of the oil pipe in the pitch changeable propeller shaft, and is characterized in that it comprises:

[0007] A fixing assembly, the fixing assembly being used to be connected to the controllable pitch propeller shaft to be tested for sealing;

[0008] A sealing component, wherein the sealing component is sleeved outside the oil pipe, a first end of the sealing component is connected to the fixing component, and a second end of the sealing component is provided with a first through hole aligned with the oil filling port; and

[0009] A plug is disposed in the first through hole in an openable and closable manner.

[0010] Furthermore, the sealing assembly comprises:

[0011] A cover plate short tube, wherein the cover plate short tube is sleeved outside the oil pipe, and a first end of the cover plate short tube is connected to the fixing assembly;

[0012] A cover plate end cover, the cover plate end cover is connected to the second end of the cover plate short tube, and a second through hole aligned with the oil filling port is provided in the middle of the cover plate end cover;

[0013] A planar welding seat is connected to the cover plate end cover, and the first through hole is opened in the middle of the planar welding seat and is connected to the second through hole.

[0014] Furthermore, the sealing assembly further comprises a cover plate flange, and the cover plate flange is connected to the end of the controllable pitch propeller shaft to be tested for sealing.

[0015] Furthermore, the fixing assembly comprises:

[0016] A snap ring, the snap ring being sleeved on the mating surface between the controllable pitch propeller shaft and the coupling;

[0017] A clamping ring flange, wherein the clamping ring flange is connected to the clamping ring as a whole;

[0018] A buffer component is clamped between the clamping ring and the controllable pitch propeller shaft.

[0019] Further, the snap ring comprises at least two snap ring parts, and the snap ring parts are butted together to form the annular snap ring;

[0020] The clamping ring flange comprises at least two clamping ring flange parts, and both ends of the clamping ring flange parts are provided with clamping ring connecting parts for connecting with adjacent clamping ring flange parts;

[0021] The opposite clamping ring connection parts are connected by bolts and nuts.

[0022] Furthermore, the close test equipment also includes:

[0023] A connecting rod assembly comprises at least two connecting rods, and the first end of the sealing assembly is connected to the fixing assembly through the connecting rod assembly.

[0024] Furthermore, the connecting rod is connected to the clamping ring flange via a nut, and the connecting rod is connected to the cover plate flange via a nut.

[0025] Furthermore, the close test equipment also includes:

[0026] A first sealing ring, wherein the end surface where the cover flange is connected to the end of the controllable pitch propeller shaft is provided with a sealing ring groove, and the first sealing ring is clamped in the sealing ring groove.

[0027] Furthermore, the fixing component is a metal hose, a first end of the metal hose is sleeved on the end of the adjustable pitch propeller shaft to be sealed and is connected to the adjustable pitch propeller shaft through a buckle, and a second end of the metal hose is sleeved on the first end of the cover plate short tube and is connected to the cover plate short tube through a buckle.

[0028] Furthermore, a second sealing ring is sleeved on the end of the controllable pitch propeller shaft to be tested for sealing, and a third sealing ring is sleeved on the first end of the cover plate short tube.

[0029] The sealing test equipment provided by the present invention is more flexible, operable, safer and more diverse and simultaneous than the traditional blind flange equipment for sealing test, thereby improving work efficiency, saving manpower, material resources, financial resources and time costs, and shortening the construction period for the entire ship construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of a close test device provided by an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure of the sealing assembly of the sealing test equipment shown;

[0032] Figure 3 for Figure 1 A schematic diagram of the structure of the fixed components of the sealing test equipment shown;

[0033] Reference numerals:

[0034] 1-cock; 2-short tube of cover plate; 3-end cover of cover plate; 4-flat welding seat; 5-flange of cover plate; 6-clamping ring; 7-clamping ring flange; 8-buffer; 9-clamping ring connecting part; 10-connecting rod; 11-matching surface between adjustable pitch propeller shaft and coupling; 12-bolt; 13-flat washer; 14-spring washer; 15-nut; 16-first sealing ring; 17-adjustable pitch propeller shaft. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0037] In order to address the shortcomings of existing tightness testing equipment, the present application designs a new type of tightness testing equipment for controllable pitch propeller shafts, which can complete the tightness test of the inner oil pipes of each shaft section of the controllable pitch propeller shaft system in the indoor field in advance at the same time. This can greatly save the time of the entire assembly process of the controllable pitch propeller shaft, and save manpower and material resources.

[0038] Embodiment 1

[0039] like Figure 1-Figure 3 As shown, an embodiment of the present application provides a tightness test device, which is applied to a pitch propeller, the pitch propeller comprising a blade, a hub and a pitch propeller shaft, the blade being fixedly mounted on a crank disk of the hub, a pitch cylinder being arranged in the hub, two adjacent sections of the pitch propeller shaft being connected via a coupling, an oil pipe being arranged in the pitch propeller shaft, one end of the oil pipe being connected to the pitch cylinder, and the other end being an oil filling port, the tightness test device being sealedly connected to the end of the pitch propeller shaft, and being used for testing the tightness of the oil pipe in the pitch propeller shaft, and being characterized in that it comprises: a fixing component, a sealing component and a plug 1, the fixing component being used for connecting to the pitch propeller shaft to be tested for sealing; the sealing component being sleeved on the outside of the oil pipe, the first end of the sealing component being connected to the fixing component, the second end of the sealing component being provided with a first through hole aligned with the oil filling port; the plug being openable and closable and arranged in the first through hole.

[0040] In some embodiments, Figure 1 as well as Figure 2 As shown, the sealing component includes a cover plate short tube 2, a cover plate end cover 3 and a flat welding seat 4, the cover plate short tube is sleeved on the outside of the oil pipe, the first end of the cover plate short tube is connected to the fixing assembly, the cover plate end cover is connected to the second end of the cover plate short tube, and the middle part of the cover plate end cover is provided with a second through hole aligned with the oil filling port; the flat welding seat is connected to the cover plate end cover, the first through hole is opened in the middle part of the flat welding seat, and is communicated with the second through hole.

[0041] In some embodiments, Figure 1 as well as Figure 2 As shown, the sealing assembly also includes a cover plate flange 5, which is connected to the end of the controllable pitch propeller shaft to be tested for sealing. The cover plate flange and the cover plate end cover are made of plate materials, and after being welded with the cover plate short tube, the weld is ground and the surface is polished. The cover plate short tube is made of steel pipe, and the flat welding seat is made of bar material, which is welded to the cover plate end cover, and the weld is ground and the surface is polished after welding.

[0042] In some embodiments, Figure 1 as well as Figure 3 As shown, the fixing assembly includes a clamping ring 6, a clamping ring flange 7 and a buffer 8. The clamping ring is sleeved on the mating surface 11 of the adjustable pitch propeller shaft and the coupling. The clamping ring flange is connected to the clamping ring as a whole. The buffer is clamped between the clamping ring and the adjustable pitch propeller shaft. The buffer is an elastic member, which can be made of rubber, silicone, etc., and is not specifically limited here. The clamping ring flange and the clamping ring connecting plate are made of plate materials, and the clamping ring is made of pipe materials and welded to the clamping ring flange and the clamping ring connecting plate. After welding, the weld is ground and the surface is polished.

[0043] Specifically, if Figure 3 As shown, the snap ring includes at least two snap ring parts, and the snap ring parts are connected to form the annular snap ring; the snap ring flange includes at least two snap ring flange parts, and both ends of the snap ring flange parts are provided with snap ring connecting parts 9 for connecting with adjacent snap ring flange parts; the opposite snap ring connecting parts 9 are connected in sequence by bolts 12, flat washers 13, spring washers 14 and nuts 15.

[0044] In some embodiments, Figure 1 As shown, the sealing test equipment further includes a connecting assembly, the connecting rod assembly includes at least two connecting rods 10, and the first end of the sealing assembly is connected to the fixing assembly through the connecting rod assembly.

[0045] Specifically, the clamping ring flange and the cover plate flange are connected through the connecting rod. The connecting rod and the clamping ring flange are connected in sequence through a flat washer, a spring washer and a nut, and the connecting rod and the cover plate flange are connected in sequence through a flat washer, a spring washer and a nut. In order to improve the stability of equipment installation, six connecting rods are used in the embodiment of the present application.

[0046] In some embodiments, Figure 1As shown, the sealing test equipment further includes a first sealing ring 16, and a sealing ring groove is provided at the end surface where the cover flange is connected to the end of the adjustable pitch propeller shaft 17, and the first sealing ring is clamped in the sealing ring groove. By installing the sealing ring in the sealing ring groove of the cover flange, the shaft end surface can be effectively sealed to prevent leakage of the sealing test liquid during the sealing test.

[0047] When the tightness test equipment of the adjustable pitch propeller shaft provided in the embodiment of the present application is used for tightness test, the oil pipes in each shaft section can be tested for tightness in advance in the inner field. The specific method of use is: first fix the shaft section to be tested with other assembly equipment, and then fix the clamping ring (assembled with the clamping ring flange and the clamping ring connecting plate) and the rubber at the mating surface of the shaft and the coupling through bolts, nuts, spring washers, and flat washers. The rubber is assembled between the shaft and the clamping ring to prevent the equipment from damaging the shaft surface during the test. After the clamping ring assembly is fixed, the cover plate flange and other components are connected through the connecting rod and other components. Figure 1 The connection is shown in Figure 1, and the cover flange and other components are fixed to the end face of the shaft section.

[0048] After the above-mentioned adjustable pitch propeller shaft tightness test equipment is assembled, fill the oil pipe in the shaft with tightness test liquid through the oil filling port on the oil pipe according to the tightness test requirements, seal the oil filling port, screw it into the flat welding seat on the cover plate assembly through the plug, tighten the plug to maintain the pressure, and after the tightness test requirements are met, remove the adjustable pitch propeller shaft tightness test equipment and carry out the tightness test of the next shaft section. It is also possible to manufacture multiple shaft sections that need to be tight tested with this equipment at the same time, which can greatly save manpower, material resources, financial resources and time, and save the construction period for the entire ship construction.

[0049] In some embodiments, the fixing assembly is a metal hose, the first end of which is sleeved on the end of the adjustable pitch propeller shaft to be tested for sealing, and connected to the adjustable pitch propeller shaft through a buckle, the second end of which is sleeved on the first end of the cover plate short tube, and connected to the cover plate short tube through a buckle. The end of the adjustable pitch propeller shaft to be tested for sealing is sleeved with a second sealing ring, and the first end of the cover plate short tube is sleeved with a third sealing ring.

[0050] When the tightness test equipment of the adjustable pitch propeller shaft provided in the embodiment of the present application is carried out, the second sealing ring is first sleeved on the end of the shaft section to be tight tested, the third sealing ring is sleeved on the first end of the cover short tube, and then the first end of the metal hose is sleeved on the end of the shaft section to be tight tested and connected by a snap-fit, and the second end of the metal hose is sleeved on the first end of the cover short tube on which the cover end cover and the flat welding seat have been installed.

[0051] After the above-mentioned adjustable pitch propeller shaft tightness test equipment is assembled, fill the oil pipe in the shaft with tightness test liquid through the oil filling port on the oil pipe according to the tightness test requirements, seal the oil filling port on the shaft and screw it into the flat welding seat on the cover plate assembly through the plug, tighten the plug, and maintain the pressure. After the tightness test requirements are met, remove the adjustable pitch propeller shaft tightness test equipment and carry out the tightness test of the next shaft section. It is also possible to manufacture multiple shaft sections that need to be tight tested at the same time with this equipment, which can greatly save manpower, material resources, financial resources and time, and save the construction period for the entire ship construction.

[0052] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0053] 1. The WS18 product applies the tightness test equipment of the controllable pitch propeller shaft provided in the embodiment of the present application, and completes the tightness test of the inner oil pipes of each shaft section of the controllable pitch propeller shaft system in the indoor field in advance, which greatly saves the time of the controllable pitch propeller shaft in the entire assembly process, and saves manpower and material resources.

[0054] 2. Due to the structural design of the plug being openable and closable and arranged in the first through hole, when the plug is opened, it is convenient to fill the oil pipe in the shaft with the sealing liquid and seal the oil filling port. The sealing test can be started by tightening the plug, which is easy to operate.

[0055] 3. Due to the use of the clamping ring flange and connecting rod structural design, when the connecting rod is loosened, the structural device is easy to disassemble and assemble, with strong flexibility and simple operation.

[0056] 4. Since the internal oil pipeline structure of the adjustable pitch propeller shaft is complex and has high tightness requirements, this device adopts a detachable connection design. On the one hand, the tightness test of a single shaft section can be carried out in advance in the indoor field, which improves operability and safety; on the other hand, the tightness test of the entire shaft section can be carried out underwater after each shaft section is assembled.

[0057] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0058] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0059] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0060] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be connection, detachable connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0063] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0064] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A tightness test device, applied to a controllable pitch propeller, the controllable pitch propeller comprises a blade, a hub and a controllable pitch propeller shaft, the blade is fixedly mounted on a crank disk of the hub, a pitch cylinder is arranged in the hub, two adjacent sections of the controllable pitch propeller shaft are connected via a coupling, an oil pipe is arranged in the controllable pitch propeller shaft, one end of the oil pipe is connected to the pitch cylinder, and the other end is an oil filling port, the tightness test device is sealed and connected to the end of the controllable pitch propeller shaft, and is used to test the tightness of the oil pipe in the controllable pitch propeller shaft, and is characterized in that: include: A fixing assembly, the fixing assembly being used to be connected to the controllable pitch propeller shaft to be tested for sealing; A sealing component, wherein the sealing component is sleeved outside the oil pipe, a first end of the sealing component is connected to the fixing component, and a second end of the sealing component is provided with a first through hole aligned with the oil filling port; and A plug is disposed in the first through hole in an openable and closable manner.

2. The close testing device according to claim 1, characterized in that: The sealing assembly comprises: A cover plate short tube, wherein the cover plate short tube is sleeved outside the oil pipe, and a first end of the cover plate short tube is connected to the fixing assembly; A cover plate end cover, the cover plate end cover is connected to the second end of the cover plate short tube, and a second through hole aligned with the oil filling port is provided in the middle of the cover plate end cover; A planar welding seat is connected to the cover plate end cover, and the first through hole is opened in the middle of the planar welding seat and is connected to the second through hole.

3. The close testing device according to claim 2, characterized in that: The sealing assembly further comprises a cover plate flange, which is connected to the end of the controllable pitch propeller shaft to be tested for sealing.

4. The close testing device according to claim 3, characterized in that: The fixing assembly comprises: A snap ring, the snap ring being sleeved on the mating surface between the controllable pitch propeller shaft and the coupling; A clamping ring flange, wherein the clamping ring flange is connected to the clamping ring as a whole; A buffer component is clamped between the clamping ring and the controllable pitch propeller shaft.

5. The close test equipment according to claim 4, characterized in that: The snap ring comprises at least two snap ring parts, and the snap ring parts are connected to form the annular snap ring; The clamping ring flange comprises at least two clamping ring flange parts, and both ends of the clamping ring flange parts are provided with clamping ring connecting parts for connecting with adjacent clamping ring flange parts; The opposite clamping ring connection parts are connected by bolts and nuts.

6. The close testing device according to claim 4 or 5, characterized in that: The close test equipment also includes: A connecting rod assembly comprises at least two connecting rods, and the first end of the sealing assembly is connected to the fixing assembly through the connecting rod assembly.

7. The close test device according to claim 6, characterized in that: The connecting rod is connected to the clamping ring flange via a nut, and the connecting rod is connected to the cover plate flange via a nut.

8. The close testing device according to claim 7, characterized in that: The close test equipment also includes: A first sealing ring, wherein the end surface where the cover flange is connected to the end of the controllable pitch propeller shaft is provided with a sealing ring groove, and the first sealing ring is clamped in the sealing ring groove.

9. The close testing device according to claim 2, characterized in that: The fixing assembly is a metal hose, a first end of which is sleeved on the end of the adjustable pitch propeller shaft to be sealed and connected to the adjustable pitch propeller shaft through a buckle, and a second end of the metal hose is sleeved on the first end of the cover plate short tube and connected to the cover plate short tube through a buckle.

10. The close testing device according to claim 9, characterized in that: The end of the controllable pitch propeller shaft to be tested for sealing is sleeved with a second sealing ring, and the first end of the cover plate short tube is sleeved with a third sealing ring.

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