Anti-theft device and oil field wellhead hand wheel valve

Abstract

The present invention discloses an anti-theft device and an oilfield wellhead handwheel valve, the anti-theft device comprises: a first slip; a second slip connected to the first slip; a lock tongue arranged inside the second slip; a magnetic lock arranged inside the second slip, the driving end of the magnetic lock connected to the lock tongue and suitable for driving the lock tongue to slide; in a locked state, the magnetic lock drives the lock tongue to insert into the valve copper sleeve and approach the valve lead screw to lock with the valve lead screw; in an unlocked state, the magnetic lock drives the lock tongue away from the valve lead screw. The present invention ingeniously uses the magnetic lock to control the lock tongue to insert into the valve copper sleeve and lock with the valve lead screw, so as to play an anti-theft role for the valve. The strong magnetic effect of the magnetic lock is used to ensure that the lock tongue is not easy to unlock when locked with the valve lead screw. The magnetic lock requires a special unlocking tool to open and close, and cannot be imitated or destroyed, thereby enhancing the safety of the oilfield wellhead handwheel valve.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to an anti-theft device and an oilfield wellhead handwheel valve. Background Art

[0002] The handwheel of the oilfield wellhead valve is mainly used to control and adjust the output equivalent of oil and gas, that is, to adjust the output of oil and gas. In single wells, marginal wells, farmlands, and rural living areas, wells that are inconvenient for people to find are stolen, and the handwheel and the inner copper sleeve of the valve are more likely to be stolen, causing serious consequences for oilfield production. Because the theft of the valve handwheel is likely to cause the valve to lose control, various safety accidents and hidden dangers, based on this phenomenon, the oil production unit has put forward the requirement of valve handwheel anti-theft.

[0003] The current oilfield wellhead anti-theft device often requires an anti-theft box to be arranged outside the oilfield wellhead valve handwheel, but the anti-theft box is easily damaged and has a poor anti-theft effect. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the current oilfield wellhead anti-theft device has a poor anti-theft effect, thereby providing an anti-theft device and an oilfield wellhead handwheel valve.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] An anti-theft device, comprising:

[0007] First Kava;

[0008] The second slip is connected to the first slip and is arranged in cooperation with the first slip on the periphery of the valve copper sleeve;

[0009] A locking tongue is arranged inside the second slip, and one end of the locking tongue extends out from the inner annular surface of the second slip;

[0010] A magnetic lock is arranged inside the second slip, and a driving end of the magnetic lock is connected to a lock tongue and is suitable for driving the lock tongue to slide; the magnetic lock has a locked state and an unlocked state; in the locked state, the magnetic lock drives the lock tongue to insert into the valve copper sleeve and approach the valve lead screw to lock with the valve lead screw; in the unlocked state, the magnetic lock drives the lock tongue away from the valve lead screw.

[0011] To further optimize the technical solution, a protrusion is provided on one side of the second cava, a blind hole suitable for accommodating the magnetic lock is provided on the protrusion, and a lock tongue hole suitable for accommodating the lock tongue is provided on the inner annular surface of the second cava.

[0012] To further optimize the technical solution, the locking tongue hole is vertically arranged to the blind hole, and the axis of the locking tongue hole passes through the center of the second slip.

[0013] Further optimizing the technical solution, the locking tongue comprises a column and a rack connected in one piece;

[0014] The magnetic lock comprises a magnetic lock body, a lock hole is arranged at one end of the magnetic lock body, a drive shaft perpendicular to the lock tongue is arranged at the other end of the magnetic lock body, a gear is coaxially arranged on the drive shaft, and the gear is meshed with a rack.

[0015] To further optimize the technical solution, the magnetic lock is a rare-earth permanent magnetic lock.

[0016] To further optimize the technical solution, the distance between the first slip and the second slip can be adjusted.

[0017] An oilfield wellhead handwheel valve, comprising:

[0018] A valve body having a valve cavity, an inlet and an outlet;

[0019] A valve screw is rotatably arranged on the valve body, one end of the valve screw located in the valve body is connected to a valve plate, and the valve plate is suitable for controlling the state of the valve cavity;

[0020] A handwheel assembly connected to one end of the valve lead screw extending out of the valve body;

[0021] The valve copper sleeve is sleeved around the valve screw and connected to the valve body;

[0022] The anti-theft device is connected to the valve copper sleeve.

[0023] To further optimize the technical solution, a through hole corresponding to the position of the lock tongue is opened on the side of the valve copper sleeve.

[0024] Further optimizing the technical solution, the valve copper sleeve comprises a first stepped sleeve and a second stepped sleeve which are integrally connected, a valve copper sleeve shoulder is formed between the first stepped sleeve and the second stepped sleeve, and at least one first threaded hole is opened on the valve copper sleeve shoulder;

[0025] At least one second threaded hole corresponding to the first threaded hole is formed on the first slip and / or the second slip, and the first slip and / or the second slip are connected to the shoulder of the valve copper sleeve by screws.

[0026] To further optimize the technical solution, when the magnetic lock of the anti-theft device is in a locked state, the magnetic lock is sealed by steel glue.

[0027] The technical solution of the present invention has the following advantages:

[0028] 1. The anti-theft device provided by the present invention cleverly uses a magnetic lock to control the locking tongue to be inserted into the copper sleeve of the valve and locked with the valve screw, thereby preventing the valve from being stolen. The second slip of the device is tightly locked with the copper sleeve of the valve and the valve screw, and the second slip cannot be removed from the valve. There is no need to set up multiple anti-theft structures. Only one magnetic lock and a matching locking tongue are required to achieve a firm locking of the valve. The structure is simple and the anti-theft cost is reduced. The strong magnetic effect of the magnetic lock is utilized to ensure that the locking tongue is not easy to unlock when locked with the valve screw. The magnetic lock requires a special unlocking tool to open and close, and cannot be imitated or destroyed, thereby enhancing the safety of the handwheel valve at the wellhead of the oil field.

[0029] 2. The anti-theft device provided by the present invention has a rare-earth permanent magnetic lock, which has good magnetism, conductivity and corrosion resistance, does not generate static electricity, and thus avoids the occurrence of accidents such as self-explosion and spontaneous combustion caused by the magnetic lock, and can be safely opened without static electricity by using magnetism.

[0030] 3. The present invention provides an anti-theft device, in which the first slip and the second slip are fastened by screws, and the distance between the first slip and the second slip can be adjusted, which can adapt to the size specifications of most valves in the oil field, making the anti-theft device more widely applicable.

[0031] 4. The present invention provides an oilfield wellhead handwheel valve, in which an anti-theft device is installed on the periphery of the valve copper sleeve. The anti-theft device is both sturdy and reasonably designed, has good anti-damage and anti-theft performance, and cannot be prepared and imitated. It uses magnetic means and a clever combination of accessories for sealing connection to achieve excellent anti-theft effects in practical applications.

[0032] 5. In an oilfield wellhead handwheel valve provided by the present invention, when the magnetic lock of the anti-theft device is in a locked state, the magnetic lock is sealed by steel glue to prevent damage by others. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of the anti-theft device provided by the present invention;

[0035] Figure 2 For the present invention Figure 1 AA section view;

[0036] Figure 3This is a structural schematic diagram of the oilfield wellhead handwheel valve provided by the present invention.

[0037] Reference numerals:

[0038] 10. Anti-theft device, 1. First slip, 2. Second slip, 21. Raised portion, 3. Screw, 4. Lock tongue, 5. Magnetic lock, 6. Handwheel assembly, 7. Valve body. DETAILED DESCRIPTION

[0039] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an" and "an" as used herein may also be meant to include the plural forms. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0041] Although the terms first, second, etc. may be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. In addition, in the description of the present invention, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] For ease of description, spatial relative terms can be used in the text to describe the relationship of an element or feature as shown in the figure relative to another element or feature, and these relative terms are, for example, "front", "rear", "middle", "inside", "longitudinal", "lateral", "side", "vertical", "outside", etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation in addition to the orientation depicted in the figure. For example, if the mechanism in the figure flips, the element described as "below other elements or features" or "below other elements or features" will be subsequently oriented to "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include the orientation on and below. The mechanism can be oriented in addition (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0043] The handwheel of the oilfield wellhead valve is mainly used to control and adjust the output equivalent of oil and gas, that is, to adjust the output of oil and gas. In single wells, marginal wells, farmlands, and rural living areas, wells that are inconvenient for people to find are stolen, and the handwheel and the inner copper sleeve of the valve are more likely to be stolen, causing serious consequences for oilfield production. Because the theft of the valve handwheel is likely to cause the valve to lose control, various safety accidents and hidden dangers, based on this phenomenon, the oil production unit has put forward the requirement of valve handwheel anti-theft.

[0044] The current oilfield wellhead anti-theft device often requires an anti-theft box to be arranged outside the oilfield wellhead valve handwheel, but the anti-theft box is easily damaged and has a poor anti-theft effect.

[0045] Based on this, the present invention provides an anti-theft device and an oilfield wellhead handwheel valve, which utilizes a magnetic lock to control the lock tongue to be inserted into the valve copper sleeve and locked with the valve lead screw, thereby preventing the valve from being turned at will by people without management authority or without a key, thereby preventing the oil or the valve copper sleeve from being stolen.

[0046] Example 1

[0047] The specific embodiments of the present invention are described in detail below in conjunction with the anti-theft device of the first aspect of the present invention.

[0048] It should be noted that the anti-theft device of the first aspect of the present invention is only a preferred embodiment of the present invention. The anti-theft device of the present invention can adopt the anti-theft device of the first aspect of the present invention or other structures. For the convenience of explanation, the anti-theft device of the first aspect of the present invention is explained below.

[0049] Combination Figure 1 and Figure 2 As shown, this embodiment discloses an anti-theft device, including a first slip 1, a second slip 2, a lock tongue 4 and a magnetic lock 5.

[0050] The first slip 1 is a fastening slip, and the second slip 2 is a locking slip. The second slip 2 is connected to the first slip 1 and is arranged in cooperation with the first slip 1 on the periphery of the valve copper sleeve.

[0051] The locking tongue 4 is arranged inside the second slip 2 , and one end of the locking tongue 4 extends out from the inner annular surface of the second slip 2 .

[0052] The magnetic lock 5 is arranged inside the second slip 2, and the driving end of the magnetic lock 5 is connected to the lock tongue 4 and is suitable for driving the lock tongue 4 to slide. The magnetic lock 5 has a locked state and an unlocked state. In the locked state, the magnetic lock 5 is closed using a special key or other unlocking tool, and the magnetic lock 5 drives the lock tongue 4 to be inserted into the valve copper sleeve and close to the valve screw to lock with the valve screw. The valve screw cannot rotate and thus cannot control the movement of the valve plate, so that the valve is always in a closed state. In the unlocked state, the magnetic lock 5 is opened using a special key or other unlocking tool, and the magnetic lock 5 drives the lock tongue 4 away from the valve screw, and then the valve screw can be opened normally under the drive of the handwheel assembly.

[0053] The above anti-theft device cleverly uses the magnetic lock 5 to control the lock tongue 4 to be inserted into the valve copper sleeve and locked with the valve screw, thereby playing an anti-theft role for the valve. In addition, the second slip 2 of the device is tightly locked with the valve copper sleeve and the valve screw, and the second slip 2 cannot be removed from the valve. There is no need to set up multiple anti-theft structures. Only relying on a magnetic lock 5 and a matching lock tongue 4 can achieve a firm locking of the valve. The structure is simple and the anti-theft cost is reduced. The strong magnetic effect of the magnetic lock 5 is used to ensure that the lock tongue 4 is not easy to unlock when locked with the valve screw. The magnetic lock 5 requires a special unlocking tool to open and close, and cannot be imitated or destroyed, which enhances the safety of the oilfield wellhead handwheel valve.

[0054] The anti-theft device uses different magnetic points and magnetic force directions to control the opening and closing of the valve. This unlocking tool cannot be configured and imitated, but it can freely open the anti-theft device, and the design is very reasonable.

[0055] In some embodiments, a protrusion 21 is provided on one side of the second slip 2 , a blind hole suitable for accommodating the magnetic lock 5 is provided on the protrusion 21 , and a lock tongue hole suitable for accommodating the lock tongue 4 is opened on the inner annular surface of the second slip 2 .

[0056] The blind hole is connected to the bolt hole, the bolt hole is vertically arranged to the blind hole, and the axis of the bolt hole passes through the center of the second slip 2.

[0057] In some embodiments, the locking bolt 4 includes a column and a rack that are integrally connected, and the column can extend from the locking bolt hole.

[0058] In some embodiments, the magnetic lock 5 includes a magnetic lock body, a lock hole is provided at one end of the magnetic lock body, the lock hole is exposed to the outside, and a drive shaft perpendicular to the lock tongue 4 is provided at the other end of the magnetic lock body, and a gear is provided concentrically with the drive shaft, and the gear is meshed with the rack. In this embodiment, when a special key is inserted into the lock tongue hole, the key can be used to control the rotation of the drive shaft of the magnetic lock body, thereby driving the gear to rotate, and the gear can drive the rack to move linearly along the lock tongue hole when rotating, thereby driving the column to slide along the lock tongue hole.

[0059] The current magnetic lock cannot solve the problem of static electricity. If it is applied to various complex oil wells, it may cause self-explosion and self-ignition under the action of various gases, resulting in major accidents. It also uses electricity to control valves, which is prone to huge safety hazards and accidents. In order to solve this technical problem, in some embodiments, the magnetic lock 5 is a rare pick magnetic lock, which will never fade, has good magnetism, conductivity and corrosion resistance, and will not generate static electricity, thereby avoiding the occurrence of accidents such as self-explosion and self-ignition caused by the magnetic lock, and can be safely opened without static electricity using magnetism.

[0060] In some embodiments, the first slip 1 and the second slip 2 are fastened by screws 3, and the distance between the first slip 1 and the second slip 2 can be adjusted, which can adapt to the size specifications of most valves in the oil field, making the anti-theft device more applicable. When adjusting the distance between the first slip 1 and the second slip 2, the fastening distance of the screws 3 between the first slip 1 and the second slip 2 can be adjusted.

[0061] In some embodiments, the anti-theft device is made of 45# steel, which is particularly hard and difficult to be damaged.

[0062] Example 2

[0063] The specific embodiments of the present invention are described in detail below in conjunction with the oilfield wellhead handwheel valve of the second aspect of the present invention.

[0064] It should be noted that the oilfield wellhead handwheel valve of the second aspect of the present invention is only a preferred embodiment of the present invention. The oilfield wellhead handwheel valve of the present invention can adopt the oilfield wellhead handwheel valve of the second aspect of the present invention, and can also adopt other structures. For the convenience of explanation, the oilfield wellhead handwheel valve of the second aspect of the present invention is used for explanation below.

[0065] Combination Figures 1 to 3As shown, this embodiment discloses an oilfield wellhead handwheel valve, including a valve body 7, a valve screw, a handwheel assembly 6, a valve copper sleeve and an anti-theft device 10 of embodiment 1. The valve body 7 has a valve cavity, an inlet and an outlet. The valve screw is rotatably arranged on the valve body, and one end of the valve screw located in the valve body is connected to a valve plate, which is suitable for controlling the state of the valve cavity. The handwheel assembly 6 is connected to one end of the valve screw extending out of the valve body. The valve copper sleeve is arranged on the periphery of the valve screw and connected to the valve body 7. The anti-theft device is connected to the valve copper sleeve.

[0066] In some embodiments, a through hole corresponding to the position of the lock tongue 4 is opened on the side of the valve copper sleeve, and the through hole is set to allow the lock tongue 4 to pass through the valve copper sleeve. The valve body is drilled through the valve copper sleeve to two centimeters inside the valve screw, and the inner diameter of the through hole is slightly larger than the outer diameter of the lock tongue 4.

[0067] The pressure plate at the bottom of the valve screw is provided with at least one groove, into which the lock tongue 4 can enter, so as to limit the rotation of the valve screw and play a role in locking and preventing theft. Further, the depth of the groove is two centimeters.

[0068] In some embodiments, the valve copper sleeve includes a first step sleeve and a second step sleeve that are integrally connected, a valve copper sleeve shoulder is formed between the first step sleeve and the second step sleeve, and at least one first threaded hole is opened on the valve copper sleeve shoulder, and the central axis of the first threaded hole is parallel to the central axis of the valve copper sleeve.

[0069] At least one second threaded hole is provided on the second slip 2, and the second threaded hole is used for the installation connection between the second slip 2 and the valve. The second threaded hole corresponds to the first threaded hole, that is, the position and hole spacing of the second threaded hole correspond to the position and hole spacing of the first threaded hole. The central axis of the second threaded hole is parallel to the central axis of the second slip 2. The second slip 2 is connected to the shoulder of the copper sleeve of the valve by screws, and the screws are positioned in the first threaded hole and the second threaded hole.

[0070] In some embodiments, when the magnetic lock 5 of the anti-theft device is in a locked state, the magnetic lock 5 is sealed by steel glue to prevent damage by others. The pressure ring on the valve screw is fixed by an aluminum strip through the drilled hole, so that the handwheel assembly cannot be disassembled to prevent theft.

[0071] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. An anti-theft device, characterized in that: include: First Slip (1); A second slip (2) is connected to the first slip (1) and is arranged in cooperation with the first slip (1) on the periphery of the valve copper sleeve; A locking tongue (4) is arranged inside the second slip (2), one end of the locking tongue (4) protruding from the inner annular surface of the second slip (2); the locking tongue (4) comprises a column and a rack which are integrally connected; A magnetic lock (5) is arranged inside the second slip (2), the driving end of the magnetic lock (5) being connected to the lock tongue (4) and being suitable for driving the lock tongue (4) to slide; the magnetic lock (5) comprises a magnetic lock body, one end of the magnetic lock body being provided with a lock hole, the other end of the magnetic lock body being provided with a drive shaft perpendicular to the lock tongue (4), the drive shaft being provided with a gear coaxially, the gear being meshed with the rack; the magnetic lock (5) has a locked state and an unlocked state; in the locked state, the magnetic lock (5) drives the lock tongue (4) to be inserted into the valve copper sleeve and close to the valve lead screw to be locked with the valve lead screw; in the unlocked state, the magnetic lock (5) drives the lock tongue (4) to be away from the valve lead screw.

2. The anti-theft device according to claim 1, characterized in that: A protrusion (21) is provided on one side of the second clapboard (2), a blind hole suitable for accommodating a magnetic lock (5) is provided on the protrusion (21), and a lock tongue hole suitable for accommodating a lock tongue (4) is provided on the inner annular surface of the second clapboard (2).

3. The anti-theft device according to claim 2, characterized in that: The locking bolt hole is arranged perpendicular to the blind hole, and the axis of the locking bolt hole passes through the center of the second slip (2).

4. The anti-theft device according to claim 1, characterized in that: The magnetic lock (5) is a rare-earth permanent magnetic lock.

5. The anti-theft device according to claim 1, characterized in that: The distance between the first slip (1) and the second slip (2) is adjustable.

6. An oilfield wellhead handwheel valve, characterized in that: include: A valve body (7) having a valve cavity, an inlet and an outlet; A valve screw is rotatably arranged on the valve body, one end of the valve screw located in the valve body is connected to a valve plate, and the valve plate is suitable for controlling the state of the valve cavity; A handwheel assembly (6) connected to one end of the valve lead screw extending out of the valve body; A valve copper sleeve, which is sleeved around the valve screw and connected to the valve body (7); The anti-theft device according to any one of claims 1 to 5 is connected to the valve copper sleeve.

7. The oilfield wellhead handwheel valve according to claim 6, characterized in that: A through hole corresponding to the position of the lock tongue (4) is provided on the side of the valve copper sleeve.

8. The oilfield wellhead handwheel valve according to claim 6, characterized in that: The valve copper sleeve comprises a first stepped sleeve and a second stepped sleeve which are integrally connected, a valve copper sleeve shoulder is formed between the first stepped sleeve and the second stepped sleeve, and at least one first threaded hole is formed on the valve copper sleeve shoulder; At least one second threaded hole corresponding to the first threaded hole is formed on the first slip (1) and / or the second slip (2), and the first slip (1) and / or the second slip (2) are connected to the shoulder of the valve copper sleeve by screws.

9. The oilfield wellhead handwheel valve according to claim 6, characterized in that: When the magnetic lock (5) of the anti-theft device is in a locked state, the magnetic lock (5) is sealed by steel glue.

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