Marine gate valve hydraulic driving mechanism

Abstract

The utility model discloses a marine gate valve hydraulic driving mechanism, which belongs to the technical field of marine gate valve driving and comprises a support. The driving part comprises a driving motor, a valve rod and a gate plate, the driving motor is installed on the support, the valve rod is located at the driving end of the driving motor and driven by the driving motor, and the gate plate is in threaded connection with the valve rod; and the feedback part comprises a feedback nut, a feedback baffle and a limiting switch, the feedback nut is installed on the valve rod and moves in the length direction of the valve rod, and the feedback baffle is connected with the feedback nut through a guide plate. The driving motor is adopted to drive the valve rod, the gate plate is in threaded connection with the valve rod, the rotary motion of the driving motor is converted into the linear motion of the gate plate, and compared with a traditional hydraulic oil cylinder horizontal pushing type driving mechanism, the structure is more compact, and the requirement for ship space limitation is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of marine gate valve drive, especially relates to a marine gate valve hydraulic drive mechanism. BACKGROUND

[0002] In the ship pipeline system, the gate valve is as the key component of controlling the flow of large flow fluid medium, and its basic composition contains the valve body, the gate and the valve rod, and the basic principle is to use the valve rod to drive the gate to move to control the opening and closing of the gate valve. With the wide application of large diameter gate valves on ships, the torque required for the opening and closing of the gate valve is getting larger and larger, and the working reliability and the requirement for the drive mechanism are improved. At the same time, the space in the cabin is limited, and the miniaturization requirement of the gate valve drive mechanism is also continuously improved.

[0003] The existing gate valve drive mode adopts the linear flat push drive of the hydraulic cylinder, and the basic principle is to use the reciprocating linear motion of the piston rod of the hydraulic cylinder to drive the valve rod and the gate to translate to control the opening and closing of the gate valve. Although this drive mode can provide larger output torque, the hydraulic cylinder occupies a large space, which is not conducive to the arrangement of the equipment in the cabin of the ship body, especially the horizontal arrangement (the gate valve diameter is arranged vertically), in addition, due to the gravity of the gate on the piston rod, the piston rod needs to be supported and sealed, which is easy to cause the sealing failure of the piston rod. At the same time, the control precision of the flat push type drive of the oil cylinder is low, which is not conducive to automatic control. UTILITY MODEL CONTENTS

[0004] The utility model overcomes the insufficient of prior art, provides a marine gate valve hydraulic drive mechanism to solve the problem in prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme: A marine gate valve hydraulic drive mechanism, comprising

[0006] A support;

[0007] A drive part, the drive part comprises a drive motor, a valve rod and a gate, the drive motor is installed on the support, the valve rod is located at the drive end of the drive motor and is driven by the drive motor, the gate is threadedly connected with the valve rod, and when the valve rod rotates, the gate moves along the length direction of the valve rod;

[0008] A feedback part, the feedback part comprises a feedback nut, a feedback baffle and a limit switch, the feedback nut is installed on the valve rod and moves along the length direction of the valve rod, the feedback baffle is connected with the feedback nut through a guide plate, and the limit switch cooperates with the feedback baffle to determine the height position of the gate.

[0009] The utility model discloses a preferable embodiment of the utility model, the support includes first seat board, second seat board and stud, first seat board with second seat board is parallelly arranged, the stud number is several and with first seat board and second seat board are connected.

[0010] The utility model discloses a preferable embodiment of the utility model, one end of the guide plate is fixedly connected with the feedback nut, and the other end is matched with a stud, and the guide plate moves along the length direction of the stud.

[0011] The utility model discloses a preferable embodiment of the utility model, the drive motor is installed on first seat board, and the valve rod is penetrated in second seat board.

[0012] The utility model discloses a preferable embodiment of the utility model, the valve rod is connected with drive motor through coupling, and the coupling is elastic coupling.

[0013] The utility model discloses a preferable embodiment of the utility model, the side mounting plate is arranged on the support, and the limit switch is located on the side mounting plate.

[0014] The utility model discloses a preferable embodiment of the utility model, the limit switch number is two, and the feedback baffle moves between two limit switches.

[0015] The utility model solves the defects in the background art, and has the following beneficial effects:

[0016] 1、 the utility model drives valve rod with drive motor, and the gate plate is connected with valve rod and is screwed, and the rotary motion of drive motor is changed into the linear motion of gate plate, compared with the traditional hydraulic cylinder flat push type driving mechanism, its structure is more compact, satisfies the requirement of ship space limitation, and effectively reduces the manufacturing cost and maintenance cost of the mechanism;

[0017] 2、 the utility model increases feedback part, realizes the accurate control to the gate valve opening and closing, and can effectively determine the position of gate plate;

[0018] 3、 the driving mechanism of the utility model is simple in structure, compact in design, is convenient for vertical or horizontal installation of equipment, and is more convenient to install. DRAWINGS

[0019] The utility model will be further explained in connection with the drawings and embodiments;

[0020] Figure 1 It is the whole structure schematic diagram of the preferred embodiment of the utility model;

[0021] Figure 2 It is Figure 1 The enlarged view of A part in the middle;

[0022] Figure 3 is a front view of the preferred embodiment of the present application;

[0023] Figure 4 is a sectional view of the preferred embodiment of the present application;

[0024] In the figure: 10, support; 11, first seat plate; 12, second seat plate; 13, stud; 20, driving part; 21, driving motor; 22, valve rod; 23, gate plate; 30, feedback part; 31, feedback nut; 32, feedback baffle; 33, limit switch; 40, guide plate; 50, shaft coupling; 60, side mounting plate. DETAILED DESCRIPTION

[0025] In the following, multiple embodiments of the present application will be disclosed with figures. For the purpose of clear illustration, many details of the physical objects will be described in the following description. However, it should be understood that these details of the physical objects should not be used to limit the present application. That is, in some embodiments of the present application, these details of the physical objects are not necessary. In addition, for the purpose of simplifying the figures, some commonly used structures and components will be shown in the figures in a simple schematic manner.

[0026] In addition, in the present application, the description such as "first", "second", etc. is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application. It is merely for the purpose of distinguishing the components or operations described with the same technical terms, and should not be understood as indicating or implying the relative importance of the technical features indicated, or implying the number of the technical features indicated. Therefore, the features limited with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of a person skilled in the art. When the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0027] The present embodiment provides a marine gate valve hydraulic drive mechanism, which drives the valve rod 22 by using the driving motor 21, and the gate plate 23 is threadedly connected with the valve rod 22, so as to convert the rotary motion of the driving motor 21 into the linear motion of the gate plate 23. Compared with the traditional hydraulic cylinder flat-pushing type drive mechanism, the structure is more compact, meets the requirement of the space limitation of the ship, and effectively reduces the manufacturing cost and maintenance cost of the mechanism.

[0028] Combination Figures 1 to 4As shown, the hydraulic drive mechanism of the ship gate valve of the embodiment comprises a bracket 10, a drive part 20 and a feedback part 30. The drive part 20 comprises a drive motor 21, a valve rod 22 and a gate plate 23. The drive motor 21 is installed on the bracket 10. The valve rod 22 is located at the driving end of the drive motor 21 and is driven by the drive motor 21. The gate plate 23 is threadedly connected with the valve rod 22. When the valve rod 22 rotates, the gate plate 23 moves along the length direction of the valve rod 22. The drive motor 21 of the embodiment is a hydraulic motor. There are two oil inlets A and B. When the A oil inlet enters high-pressure oil, the output shaft of the drive motor 21 rotates in the clockwise direction. The drive motor 21 transmits power to the valve rod 22. The gate plate 23 is provided with trapezoidal internal thread and is connected with the trapezoidal external thread of the valve rod 22. The trapezoidal thread pair realizes the conversion of rotary motion and linear motion, drives the gate plate 23 to linearly translate, and completes the closing action of the gate valve. When the B oil inlet enters high-pressure oil, the output shaft of the drive motor 21 rotates in the counterclockwise direction. The drive motor 21 transmits power to the valve rod 22. The gate plate 23 is provided with trapezoidal internal thread and is connected with the trapezoidal external thread of the valve rod 22. The trapezoidal thread pair realizes the conversion of rotary motion and linear motion, drives the gate plate 23 to linearly translate, and completes the opening action of the gate valve.

[0029] In the embodiment, the valve rod 22 is connected with the drive motor 21 through a coupling 50. The coupling 50 is an elastic coupling 50 which is used to connect the drive motor 21 and the valve rod 22, compensate the shaft alignment error, reduce vibration and ensure the stability of power transmission.

[0030] In combination Figure 1 With Figure 3 As shown, the bracket 10 of the embodiment comprises a first seat plate 11, a second seat plate 12 and a plurality of stud bolts 13. The first seat plate 11 and the second seat plate 12 are arranged in parallel. The stud bolts 13 are used to connect the first seat plate 11 and the second seat plate 12. The bracket 10 of the embodiment is installed by the first seat plate 11, the second seat plate 12 and the stud bolts 13, constitutes the support main structure of the drive mechanism, and is used to support and fix each component.

[0031] In the embodiment, the drive motor 21 is installed on the first seat plate 11. The valve rod 22 penetrates through the second seat plate 12. The first seat plate 11, the second seat plate 12 and the stud bolts 13 cooperatively stably install the drive motor 21 and the valve rod 22.

[0032] In combination Figure 1 , Figure 2 And Figure 4As shown, the feedback part 30 of the embodiment comprises a feedback nut 31, a feedback baffle 32 and a limit switch 33. The feedback nut 31 is installed on the valve stem 22 and moves along the length direction of the valve stem 22. The feedback baffle 32 is connected with the feedback nut 31 through the guide plate 40. The limit switch 33 cooperates with the feedback baffle 32 to determine the height position of the gate plate 23. The feedback nut 31, as the feedback part of the stroke control of the gate plate 23, cooperates with the thread on the valve stem 22. When the valve stem 22 rotates clockwise or counterclockwise, the feedback nut 31 moves linearly, driving the feedback baffle 32 to move. The feedback baffle 32 can sense the distance between the limit switch 33 and the object, thereby determining the stroke of the gate plate 23.

[0033] In the embodiment, one end of the guide plate 40 is fixedly connected with the feedback nut 31, and the other end cooperates with a stud 13. The guide plate 40 moves along the length direction of the stud 13. The guide plate 40 of the embodiment is provided with a matching arc surface which matches the surface of the stud 13, so that the guide plate 40 can stably move along the length direction of the stud 13, thereby guiding the movement of the feedback nut 31 and improving the movement accuracy of the feedback nut 31.

[0034] Further, the support 10 of the embodiment is provided with a side mounting plate 60. The limit switch 33 is located on the side mounting plate 60. The number of the limit switch 33 is two. The feedback baffle 32 moves between the two limit switches 33. The feedback nut 31 drives the feedback baffle 32 to move between the two limit switches 33. The two limit switches 33 can limit the stroke of the feedback baffle 32 and effectively feedback the stroke of the gate plate 23.

[0035] In actual use, the marine gate valve hydraulic drive mechanism of the embodiment drives the valve stem 22 by using the drive motor 21. The gate plate 23 is threadedly connected with the valve stem 22, converting the rotary motion of the drive motor 21 into the linear motion of the gate plate 23. Compared with the traditional hydraulic cylinder push type drive mechanism, the structure is more compact, meeting the requirements of the space limitation of the ship, effectively reducing the manufacturing cost and maintenance cost of the mechanism, and increasing the feedback part 30 to realize the accurate control of the opening and closing of the gate valve, effectively determining the position of the gate plate 23. The drive mechanism of the embodiment has a simple structure and compact design, is convenient for vertical or horizontal installation of the equipment, and is more convenient to install.

[0036] While the present application has been described with reference to various embodiments, it will be understood that many modifications and variations of the present application are possible, as they will occur to those skilled in the art in the scope of the application. That is, the methods, systems, or devices discussed above are examples. It is contemplated that various processes or components can be added, omitted, modified, and / or combined in various manners. For example, in alternative configurations, the methods can be performed in different orders than those described, and / or various stages can be added, omitted, and / or combined. Also, features described with respect to certain configurations can be combined in various other configurations. Different aspects and elements of configurations can be combined in similar fashion. Also, many of the elements described herein are well known in the art. It is also contemplated that the various elements and features could be implemented using software, hardware, firmware, middleware, code, or any combination thereof. Also, techniques, systems, and elements described with respect to the various configurations can be implemented as discrete or integrated devices.

[0037] In the description specific details are set forth in order to provide a thorough understanding of the exemplary configurations including implementations. However, configurations can be practiced without these specific details, e.g., an apparatus can be practiced using fewer than the specific number of elements described above, an apparatus can be practiced using structures other than those described above, and / or an apparatus can be practiced using a different arrangement of elements than those described above. The description is only provided to give a thorough description of the configurations, and is not intended to limit the scope of the claims to the specific configurations described. Rather, the preceding description of the configurations is provided as an enabling description for the benefit of a person of ordinary skill in the art, and is to give a general understanding of the configurations. Various changes can be made to the details of the described configurations without departing from the spirit or scope of the disclosure.

[0038] Also, although each of the operations can be described as a sequential process, many of the operations can occur in parallel, or concurrently. In addition, the order of the operations can be rearranged. A process might have other steps not discussed herein. Further, many of the operations can be performed by hardware, software, firmware, middleware, code, hardware description languages, or any combination thereof. When performed by software, firmware, middleware, or code, the program code or code segments to perform the necessary tasks can be stored in a non-transitory computer-readable medium such as a storage medium. A computer program product can comprise a computer readable medium having stored therein instructions which implement methods as described herein.

[0039] In view of the above, it will be seen that the details set forth in the above description of the application are considered as illustrative only of the principles of the application and not limiting. It is therefore intended that there be as many changes as can be made within the spirit and scope of the application, as defined in the following claims (including all equivalents), as the application might reasonably be construed as being without departing from the spirit and scope of the application. Such changes to the illustrative embodiments as can be sought by those skilled in the art are to be considered as being within the scope of the application as claimed.

Claims

1. A hydraulic drive mechanism for a marine gate valve, characterized in that, include Frame (10); The drive unit (20) includes a drive motor (21), a valve stem (22), and a gate (23). The drive motor (21) is mounted on the bracket (10). The valve stem (22) is located at the drive end of the drive motor (21) and is driven by the drive motor (21). The gate (23) is threadedly connected to the valve stem (22). When the valve stem (22) rotates, the gate (23) moves along the length of the valve stem (22). The feedback unit (30) includes a feedback nut (31), a feedback baffle (32), and a limit switch (33). The feedback nut (31) is mounted on the valve stem (22) and moves along the length of the valve stem (22). The feedback baffle (32) is connected to the feedback nut (31) through a guide plate (40). The limit switch (33) cooperates with the feedback baffle (32) to determine the height position of the gate (23).

2. The hydraulic drive mechanism for a marine gate valve according to claim 1, characterized in that, The bracket (10) includes a first base plate (11), a second base plate (12), and studs (13). The first base plate (11) and the second base plate (12) are arranged in parallel. There are several studs (13) that connect the first base plate (11) and the second base plate (12).

3. The hydraulic drive mechanism for a marine gate valve according to claim 2, characterized in that, One end of the guide plate (40) is fixedly connected to the feedback nut (31), and the other end is engaged with a stud (13). The guide plate (40) moves along the length of the stud (13).

4. The hydraulic drive mechanism for a marine gate valve according to claim 2, characterized in that, The drive motor (21) is mounted on the first seat plate (11), and the valve stem (22) passes through the second seat plate (12).

5. A hydraulic drive mechanism for a marine gate valve according to claim 1, characterized in that, The valve stem (22) is connected to the drive motor (21) via a coupling (50), and the coupling (50) is a flexible coupling (50).

6. The hydraulic drive mechanism for a marine gate valve according to claim 1, characterized in that, The bracket (10) is provided with a side mounting plate (60), and the limit switch (33) is located on the side mounting plate (60).

7. A hydraulic drive mechanism for a marine gate valve according to claim 1 or 6, characterized in that, There are two limit switches (33), and the feedback baffle (32) moves between the two limit switches (33).

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