Dual-drive worm gear lead screw fracturing valve

Abstract

The utility model relates to the technical field of oil and gas field exploration and development, in particular to a dual-drive worm gear lead screw fracturing valve which comprises a valve body, a valve plate, a valve cover and a valve rod. The valve rod is installed in the valve body, and the valve decks are fixedly installed at the two ends of the valve body. One end of the valve rod is connected with the valve plate, and the other end is connected with the dual-drive worm screw lifter; the dual-drive worm gear lead screw lifter comprises a manual drive mode and an automatic drive mode. In the manual mode, a user can manually control the lifting machine to ascend and descend; in the automatic mode, the elevator can be automatically controlled to ascend and descend. Therefore, the valve rod and the valve plate are driven to ascend and descend, and opening and closing of the valve are achieved. According to the dual-drive worm gear lead screw elevator, the opening and the closing of a valve are realized through an automatic drive mode and a manual drive mode. The valve is simple in structure, convenient to install and operate, suitable for various use scenes and capable of providing safe and efficient valve control for users.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas field exploration and development, in particular to a double-driven worm gear screw fracturing valve. Background Art

[0002] At present, the main driving modes of the fracturing valve are: Electric drive: The fracturing valve is driven by an electric motor to work, which has the advantages of fast response speed and high control accuracy. However, once the power source is lost, it will not work normally. Manual drive: The fracturing valve is controlled by a manual operating handle or rocker, which has a simple structure and low cost. However, in actual use, due to limited or unstable operating force, long distance and other problems, the control accuracy is not high and the driving force is insufficient. Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and propose a dual-drive worm gear screw fracturing valve, which adopts a dual drive mode of electric drive and manual drive, and has a certain autonomous control capability while realizing electric drive.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A dual-drive worm gear screw fracturing valve includes a valve body, a valve plate, a valve cover and a valve stem; the valve stem is installed in the valve body, and valve covers are fixedly installed at both ends of the valve body; one end of the valve stem is connected to the valve plate, and the other end is connected to a dual-drive worm gear screw lifter; the dual-drive worm gear screw lifter includes two driving modes: manual and automatic. In manual mode, the user can manually control the rise and fall of the lifter; in automatic mode, the lifter can automatically control the rise and fall of the lifter. Thereby driving the rise and fall of the valve stem and the valve plate to realize the opening and closing of the valve. The use of a dual-drive worm gear screw lifter can not only realize both manual and electric drive modes, but also has a simple structure and is easy to install and maintain.

[0006] Furthermore, the valve cover is connected to the lifting short section through the bearing cover, and the dual-drive worm gear screw lifter is installed on the lifting short section through the connecting plate and the locking positioning block. The mutual cooperation between the lifting short section, the bearing cover, the valve cover and the connecting plate makes the installation of the dual-drive worm gear screw lifter more convenient and can ensure the normal operation of the dual-drive worm gear screw lifter. When the dual-drive worm gear screw lifter descends to contact the upper end of the valve cover, the valve is in a closed state.

[0007] Furthermore, the dual-drive worm screw lift includes a motor, a screw, a handwheel and a worm wheel; the screw is meshed with the worm wheel, and the worm wheel is driven by the motor or the handwheel.

[0008] Furthermore, the valve stem is threadedly connected to the screw of the double-drive worm screw lifter, which is convenient for installation. When the lower end surface of the screw is lowered to contact the upper end of the valve cover, the valve is in a closed state.

[0009] Furthermore, a positioning pin is installed at the connection between the valve stem and the screw rod, and the positioning pin passes through the screw rod and the valve stem, so that the installation of the valve stem and the screw rod is more stable and prevents the two from rotating relative to each other.

[0010] Technical effects of the utility model:

[0011] Compared with the prior art, the utility model is a dual-drive worm screw fracturing valve, which connects the valve stem with the dual-drive worm screw lifter, has two driving modes, automatic and manual, and realizes the opening and closing of the valve. The mode can be switched according to the needs of different usage scenarios, meeting the various needs of users. The valve has a simple structure, is easy to install and operate, is suitable for various usage scenarios, and can provide users with safe and efficient valve control. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structural principle of the double-drive worm screw fracturing valve of the utility model.

[0013] In the figure, 1. double-drive worm gear screw lift; 2. valve body; 3. positioning pin; 4. valve stem; 5. connecting plate; 6. locking positioning block; 7. lifting short section; 8. bearing cover; 9. valve cover; 10. valve plate; 101. motor; 102. screw; 103. hand wheel. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is clearly and completely described below in conjunction with the accompanying drawings of the specification.

[0015] Example

[0016] like Figure 1 As shown, the present embodiment involves a dual-drive worm gear screw fracturing valve, comprising a valve body 2, a valve plate 10, a valve cover 9 and a valve stem 4; the valve stem 4 is installed in the valve body 2, and valve covers 9 are fixedly installed at both ends of the valve body 2; one end of the valve stem 4 is connected to the valve plate 10 in the valve body 2, and the other end is connected to the dual-drive worm gear screw lift 1. The dual-drive worm gear screw lift 1 is installed on the lifting short section 7 through the connecting plate 5 and the locking positioning block 6; the lifting short section 7 is installed on the valve cover 9 through the bearing cover 8. The above structural arrangement facilitates the installation of the dual-drive worm gear screw lift 1 and ensures the normal operation of the dual-drive worm gear screw lift 1. The valve stem 4 is driven to rise and fall by the dual-drive worm gear screw lift 1, thereby driving the valve plate 10 to rise and fall, thereby realizing the opening and closing of the valve.

[0017] Specifically, the dual-drive worm screw lift 1 utilizes a combination of a worm wheel and a screw 102 to achieve a lifting function, and its structure includes a motor 101, a screw 102, a handwheel 103 and a worm wheel; the screw 102 is meshed with the worm wheel, and the worm wheel is driven by the motor 101 or the handwheel 103, so as to achieve the purpose of both manual and automatic driving modes. The lower end of the screw 102 is threadedly connected to the valve stem 4, and a positioning pin 3 is installed at the connection to prevent the two from rotating relative to each other, thereby strengthening the firmness between the valve stem 4 and the screw 102. When the lower end face of the screw 102 drops to contact the upper end of the valve cover 9, the valve is in a closed state. In order to detect whether the lower end face of the screw 102 contacts the valve cover 9, a sensor can be set on the upper end face of the valve cover 9 to detect whether the lower end face of the screw 102 contacts the valve cover 9, which avoids the problem of inaccurate switching caused by the screw not being fully dropped into place to a certain extent. In manual mode, the user can control the rise and fall of the lifter through the hand wheel 103; in automatic mode, the lifter can automatically control the rise and fall of the lifter. The driving force of the double-drive worm screw lifter 1 can reach 50t. At the same time, the manual and automatic driving modes can be realized through a double-drive worm screw lifter 1, which simplifies the valve structure, makes the valve structure simpler, and is easy to process and realize.

[0018] Working principle: The utility model adopts a double-drive worm screw lifter 1, which is threadedly connected with the valve stem 4 and fixed with a positioning pin 3, so that the double-drive worm screw lifter 1 and the valve stem 4 are installed more firmly. When the valve is opened, the worm screw 102 is driven to rise, and after reaching the limit point of the double-drive worm screw lifter 1, the valve is in a fully open position; when the valve is closed, the worm screw 102 is driven to descend, and the lower end surface of the screw 102 of the double-drive worm screw lifter 1 contacts the upper end of the valve cover 9 (bottom dead center), and the valve is in a fully closed position; the double-drive worm screw lifter 1 has output shafts on both sides, which can be installed with hand wheels 103 and motors 101, and then manual drive and electric drive can be realized, and the driving force can reach 50t. It can be applied to fracturing manifold skids with pressures of 15000PSI and 20000PSI.

[0019] The above-mentioned specific implementation methods are only specific cases of the present utility model. The patent protection scope of the present utility model includes but is not limited to the above-mentioned specific implementation methods. Any appropriate changes or modifications made to them by ordinary technicians in the relevant technical field in accordance with the claims of the present utility model shall fall within the patent protection scope of the present utility model.

Claims

1. A dual-drive worm screw fracturing valve, characterized in that: The invention comprises a valve body (2), a valve plate (10), a valve cover (9) and a valve stem (4); the valve stem (4) is installed in the valve body (2), and the valve covers (9) are fixedly installed at both ends of the valve body (2); one end of the valve stem (4) is connected to the valve plate (10), and the other end is connected to a double-drive worm gear screw lift (1); the double-drive worm gear screw lift (1) comprises two driving modes: manual and automatic; the double-drive worm gear screw lift (1) comprises a motor (101), a screw (102) , a handwheel (103) and a worm wheel; the screw rod (102) is meshed with the worm wheel, and the dual-drive worm wheel screw lift (1) has output shafts on both sides, and the handwheel (103) and the motor (101) are respectively installed at both ends, and the worm wheel is driven by the motor (101) or the handwheel (103); the valve cover (9) is connected to the lifting short section (7) through the bearing cover (8), and the dual-drive worm wheel screw lift (1) is installed on the lifting short section (7) through the connecting plate (5) and the locking positioning block (6).

2. The dual-drive worm screw fracturing valve according to claim 1, characterized in that: The valve stem (4) is threadedly connected to the screw (102) of the dual-drive worm gear screw lift (1).

3. The dual-drive worm screw fracturing valve according to claim 1, characterized in that: A positioning pin (3) is installed at the connection between the valve stem (4) and the screw rod (102).

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