Mechanical limiting device for manual relay valve of wellhead control panel of offshore oil and gas field

Abstract

The utility model discloses a mechanical limiting device for a manual relay valve of a wellhead control panel of an offshore oil and gas field, which is provided with a first through hole and a second through hole, and the first through hole is sleeved on a handle of the manual relay valve when the manual relay valve of the wellhead control panel of the offshore oil and gas field is in a non-locking state, so that the mechanical limiting device can be hung on the handle. And the second through hole is sleeved on the valve rod when the manual relay valve of the wellhead control panel of the offshore oil and gas field is in a locking state, and is used for preventing the valve rod from automatically returning and closing after the pilot gas loses pressure. Meanwhile, the first main body part and the second main body part are different in thickness, the thickness of the first main body part is larger than the exposed length of the valve rod when the manual relay valve of the wellhead control panel of the offshore oil and gas field is opened, and the valve rod is prevented from being clamped into the first through hole when the manual relay valve is in a non-locking state. And the thickness of the second main body part is smaller than the exposed length of the valve rod when the manual relay valve of the wellhead control panel of the offshore oil and gas field is opened, so that the valve rod is clamped in the locking state, and the normally-open position of the valve rod is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to offshore oil platform technical field especially relates to a kind of offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device. BACKGROUND

[0002] With the continuous development of offshore oil production facilities, the intelligent level gradually improves, and the remote control capability of offshore oil production facilities gradually improves and develops greatly. Under the background of digital empowerment, realizing the humanization, unmanned and remote control production of offshore oil production facilities gradually becomes a reality. The offshore oil production facilities in the eastern South China Sea are affected by typhoon, and often need to take typhoon avoidance measures (personnel evacuation, production shutdown) in typhoon season, which has a great impact on production. In order to solve this problem, the facilities in the eastern South China Sea are currently promoting the production modification project of typhoon mode to realize the evacuation of personnel before the arrival of typhoon, and the demand for remote control to continue production. This modification also makes offshore facilities have two modes of normal production with people and short-term production without people in typhoon. In order to better improve the sustainability of production, in the unmanned mode, if there is a general and safe and controllable shutdown, remote oil well production needs to be realized.

[0003] At present, the modification demand of offshore oil and gas field facility typhoon mode makes offshore oil and gas field facility have two modes of normal production with people and short-term production without people in typhoon. In the two modes, different control demands are generated for the reset of facility wellhead control panel, and two functions of remote reset of production wellhead control panel in typhoon mode and on-site reset of conventional production with people need to be realized.

[0004] Wellhead control panel is an important equipment in offshore oil and gas field production, which is mainly used for controlling safety valve on oil tree, safety valve / gas valve and electric submersible pump, etc. According to the relevant monitoring signals, the oil production equipment is sequentially shut down to ensure that the offshore platform or equipment is always in a safe state. It mainly includes hydraulic pump, isolation valve, manual relay valve, pressure gauge, solenoid valve, etc. The manual relay valve is the main component for realizing on-site shutdown, production and control of gas source control by wellhead control personnel. It is a two-position three-normal-closed reversing valve, which needs to be manually operated to open the high-flow control valve. After opening, the pilot pressure can be used to keep it open for a long time. When the pilot supply pressure is lost, the manual relay will automatically close to release the pressure in the control loop. Some manual relay valves are provided with a locking pin function. After opening, the valve will not act when the pilot gas pressure is lost. However, the locking pin operation used on offshore platforms is complicated and has poor stability due to factors such as vibration. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a kind of offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a mechanical limiting device for a manual relay valve of an offshore oil and gas field wellhead control panel is constructed, including a main body. The main body has a first surface and a second surface arranged opposite to each other along its thickness direction. The main body is provided with a first through hole and a second through hole that penetrate the first surface and the second surface. The first through hole and the second through hole are connected and arranged in communication. The inner diameter of the first through hole is larger than the inner diameter of the second through hole. The first through hole is used to be sleeved on the handle of the manual relay valve of the offshore oil and gas field wellhead control panel when the valve is in the unlocked state. The second through hole is used to be sleeved on the valve stem of the manual relay valve of the offshore oil and gas field wellhead control panel when the valve is in the locked state.

[0007] The main body has a first main body portion and a second main body portion arranged along its height direction. The first main body portion is provided with a first through hole, and the second main body portion is provided with a second through hole. The thickness of the first main body portion is greater than the exposed length of the valve stem of the manual relay valve of the offshore oil and gas field wellhead control panel when it is in the open state, and the thickness of the second main body portion is less than the exposed length of the valve stem of the manual relay valve of the offshore oil and gas field wellhead control panel when it is in the open state.

[0008] In some embodiments, the first surface is a plane.

[0009] In some embodiments, the portion of the second surface located in the first main body portion is planar, and the portion of the second surface located in the second main body portion is planar;

[0010] The portion of the second surface located between the first main body portion and the second main body portion is an inclined surface.

[0011] In some embodiments, the thickness of the first main body portion is 9.8-10.2 mm.

[0012] In some embodiments, the thickness of the second main body portion is 6.3-6.7 mm.

[0013] In some embodiments, the main body is provided with a third through hole that passes through the first surface and the second surface, and the first through hole is connected to the second through hole through the third through hole.

[0014] In some embodiments, the length of the body is 33-37 mm.

[0015] In some embodiments, the width of the body is 23-27 mm.

[0016] In some embodiments, the main body is a single-piece structure.

[0017] In some embodiments, the body is a metal component.

[0018] The offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device has the following beneficial effects: the first through hole is used for sleeving on the handle of the offshore oil and gas field wellhead control panel manual relay valve when the offshore oil and gas field wellhead control panel manual relay valve is in a non-locking state, so that the offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device can be hung on the handle. The second through hole is used for sleeving on the valve rod of the offshore oil and gas field wellhead control panel manual relay valve when the offshore oil and gas field wellhead control panel manual relay valve is in a locking state, and is used for preventing the valve rod from automatically resetting after the pilot gas loses pressure. Meanwhile, the thicknesses of the first main body part and the second main body part are different, the thickness of the first main body part is greater than the exposed length of the valve rod in the open state of the offshore oil and gas field wellhead control panel manual relay valve, so as to prevent the first through hole from being clamped into the valve rod in the non-locking state. The thickness of the second main body part is less than the exposed length of the valve rod in the open state of the offshore oil and gas field wellhead control panel manual relay valve, so as to clamp the valve rod in the locking state and ensure the normally open position. The offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device can realize the following purposes: in the manned mode, the personnel on site need to operate the offshore oil and gas field wellhead control panel manual relay valve to control the reset of the wellhead control panel, in the typhoon mode without personnel, the offshore oil and gas field wellhead control panel manual relay valve is forced to be opened through the offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device, and the electromagnetic valve is controlled to realize the purpose of remotely resetting the wellhead control panel. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the present application, the following will further illustrate the present application with reference to the drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:

[0020] Figure 1 is a structural schematic view of the offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device in some embodiments of the present application;

[0021] Figure 2 is a structural schematic view of the offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device in some embodiments of the present application;

[0022] Figure 3 is Figure 2 the offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device in the offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device along the A-A line;

[0023] Figure 4is one of parameter schematic views of the mechanical limiting device of the manual relay valve of the offshore oil and gas field wellhead control panel in some embodiments of the utility model;

[0024] Figure 5 is the second parameter schematic view of the mechanical limiting device of the manual relay valve of the offshore oil and gas field wellhead control panel in some embodiments of the utility model;

[0025] Figure 6 is the structure schematic view of the manual relay valve of the offshore oil and gas field wellhead control panel in a non-locking state in some embodiments of the utility model;

[0026] Figure 7 is the structure schematic view of the manual relay valve of the offshore oil and gas field wellhead control panel in a locking state in some embodiments of the utility model. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, objectives and effects of the utility model, the specific implementation mode of the utility model will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or position relations indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or position relations shown in the drawings, the specific directions and operations, and are only for the convenience of describing the technical scheme, and do not indicate that the indicated device or element must have a specific direction, so it should not be understood as a limitation on the utility model.

[0028] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the technical scheme, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] In the following description, for the purpose of explanation and not to limit, specific details are set forth, such as particular system structures, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it should be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0030] Referring to Figures 1 to 5 The present application shows a kind of offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device, it can be realized in manned mode, normal personnel field operation offshore oil and gas field wellhead control panel manual relay valve 20 to control wellhead control panel reset, in typhoon mode unmanned case, by offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device, offshore oil and gas field wellhead control panel manual relay valve 20 is forced to open, and the purpose of remote reset wellhead control panel is realized by controlling solenoid valve.

[0031] Referring to Figures 1 to 5 The offshore oil and gas field wellhead control panel manual relay valve mechanical limiting device includes main body 10, the first surface 10a and the second surface 10b are oppositely arranged along the thickness direction of the main body 10, the first through hole 13 and the second through hole 14 are provided through the first surface 10a and the second surface 10b of the main body 10, the first through hole 13 and the second through hole 14 are communicated, and the inner diameter of the first through hole 13 is greater than the inner diameter of the second through hole 14, the first through hole 13 is used for being sleeved on the handle 21 of offshore oil and gas field wellhead control panel manual relay valve 20 when offshore oil and gas field wellhead control panel manual relay valve 20 is in non-locking state (as shown in Figure 6 ), the second through hole 14 is used for being sleeved on the valve stem 22 of offshore oil and gas field wellhead control panel manual relay valve 20 when offshore oil and gas field wellhead control panel manual relay valve 20 is in locking state (as shown in Figure 7 ).

[0032] The main body 10 has the first main body part 11 and the second main body part 12 arranged along the height direction thereof, the first main body part 11 is provided with the first through hole 13, the second main body part 12 is provided with the second through hole 14, the thickness of the first main body part 11 is greater than the exposed length of the valve stem 22 in the open state of offshore oil and gas field wellhead control panel manual relay valve 20 (as shown in Figure 7 ), and the thickness of the second main body part 12 is less than the exposed length of the valve stem 22 in the open state of offshore oil and gas field wellhead control panel manual relay valve 20 (as shown in Figure 7Preferably, the thickness of the second body part 12 is slightly smaller than the exposed length of the valve stem 22 in the open state of the offshore oil and gas wellhead control panel manual relay valve 20, for example, the thickness of the second body part 12 is smaller than the exposed length of the valve stem 22 in the open state of the offshore oil and gas wellhead control panel manual relay valve 20 by about 0.1-0.8mm.

[0033] Understandably, the offshore oil and gas wellhead control panel manual relay valve mechanical limiting device is provided with a first through hole 13 and a second through hole 14. The first through hole 13 is used to be sleeved on the handle 21 of the offshore oil and gas wellhead control panel manual relay valve 20 when the offshore oil and gas wellhead control panel manual relay valve 20 is in the non-locking state (as shown in Figure 6 , so that the offshore oil and gas wellhead control panel manual relay valve mechanical limiting device can be hung on the handle 21. The second through hole 14 is used to be sleeved on the valve stem 22 of the offshore oil and gas wellhead control panel manual relay valve 20 when the offshore oil and gas wellhead control panel manual relay valve 20 is in the locking state (as shown in Figure 7 , for preventing the valve stem 22 from automatically returning to close after the pilot gas pressure is lost. At the same time, the thicknesses of the first body part 11 and the second body part 12 are different. The thickness of the first body part 11 is greater than the exposed length of the valve stem 22 in the open state of the offshore oil and gas wellhead control panel manual relay valve 20 (as shown in Figure 7 , preventing the first through hole 13 from being clamped into the valve stem 22 in the non-locking state. The thickness of the second body part 12 is smaller than the exposed length of the valve stem 22 in the open state of the offshore oil and gas wellhead control panel manual relay valve 20 (as shown in Figure 7 , so as to clamp the valve stem 22 in the locking state and ensure the normally open position.

[0034] As shown in Figures 1 to 3 , in some embodiments, the main body 10 is provided with a third through hole 15 penetrating the first surface 10a and the second surface 10b. The first through hole 13 is arranged in communication with the second through hole 14 through the third through hole 15. The first through hole 13 can be a generally cylindrical hole, the second through hole 14 can be a generally semicylindrical hole, and the third through hole 15 can be a generally rectangular columnar hole. The inner diameter size of the first through hole 13 can be similar to the structural outer diameter size of the handle 21, and the inner diameter size of the second through hole 14 can be similar to the outer diameter size of the valve stem 22. The size parameters of the first through hole 13 and the second through hole 14 can refer to Figure 4 for implementation, which will not be described here.

[0035] As shown in Figure 2 and Figure 3 , in some embodiments, the first surface 10a is a plane.

[0036] As shown in Figure 2 andFigure 3 As shown, in some embodiments, the second surface 10b is planar at a portion 10b1 of the first body portion 11, the second surface 10b is planar at a portion 10b2 of the second body portion 12, and the second surface 10b is inclined at a portion 10b3 between the first body portion 11 and the second body portion 12.

[0037] In some embodiments, both ends of the body 10 along the length direction can be rounded structures, which can avoid knocking with adjacent components, i.e., protecting the body 10 itself structure and also protecting the adjacent components.

[0038] In some embodiments, the thickness of the first body portion 11 is 9.8-10.2 mm. Preferably, as shown, the thickness of the first body portion 11 is 10 mm. Figure 5

[0039] In some embodiments, the thickness of the second body portion 12 is 6.3-6.7 mm. Preferably, as shown, the thickness of the second body portion 12 is 6.5 mm. Figure 5

[0040] In some embodiments, the length dimension of the body 10 is 33-37 mm. Preferably, as shown, the length dimension of the body 10 is 35 mm. Figure 5

[0041] In some embodiments, the width dimension of the body 10 is 23-27 mm. Preferably, as shown, the width dimension of the body 10 is 25 mm. Figure 5

[0042] In some embodiments, the body 10 is a one-piece structure, which can improve the overall rigidity of the body 10.

[0043] In some embodiments, the body 10 is a metal piece, for example, the body 10 can be made of stainless steel material, which includes but is not limited to stainless steel 316L.

[0044] In some embodiments, the body 10 can be made of high-density polyethylene (HDPE), which is a kind of non-polar thermoplastic resin with high crystallinity copolymerized from ethylene. It has excellent resistance to most of the characteristics of living and industrial chemicals, and it can resist strong oxidizing agents (concentrated nitric acid), acid, base, salt and organic solvents (carbon tetrachloride) corrosion and dissolution. The polymer does not absorb moisture and has good water vapor resistance, which can be used for moisture-proof and impermeable purposes, suitable for marine environments. And it will not wear with the structure of the manual relay valve 20 of the wellhead control panel of the offshore oil and gas field.

[0045] ​​​​In some embodiments, the main body 10 can be made of ultra-high molecular weight polyethylene, which is also known as high-strength and high-modulus polyethylene. It is a linear polyethylene with no branch chain and a molecular weight of more than 1.5 million. It has excellent mechanical properties, excellent impact resistance, excellent wear resistance, chemical corrosion resistance, and good light resistance. It is suitable for marine environments and will not cause wear to the manual relay valve 20 structure of the offshore oil and gas field wellhead control panel.

[0046] Of course, the main body 10 can also be made of other materials, which are not limited here.

[0047] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0048] It can be understood that the above embodiments only express the preferred embodiments of the present application, which are described in detail and in detail, but cannot be understood as a limitation on the scope of the present application. It should be noted that for those skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and several modifications and improvements can be made, which are within the scope of the present application. Therefore, any equivalent transformation and modification within the scope of the claims of the present application shall be within the scope of the claims of the present application.

Claims

1. A mechanical limit device for a manual relay valve of a control panel of a wellhead of an offshore oil and gas field, characterized in that, The body (10) has a first surface (10a) and a second surface (10b) oppositely arranged along the thickness direction thereof, and is provided with a first through hole (13) and a second through hole (14) penetrating through the first surface (10a) and the second surface (10b), the first through hole (13) and the second through hole (14) are arranged in communication, and the inner diameter of the first through hole (13) is greater than that of the second through hole (14), the first through hole (13) is used for sleeving on the handle (21) of the manual relay valve (20) of the wellhead control panel of the offshore oil and gas field when the manual relay valve (20) is in a non-locking state, and the second through hole (14) is used for sleeving on the valve stem (22) of the manual relay valve (20) of the wellhead control panel of the offshore oil and gas field when the manual relay valve (20) is in a locking state. The body (10) has a first body part (11) and a second body part (12) arranged along the height direction thereof, the first body part (11) is provided with the first through hole (13), and the second body part (12) is provided with the second through hole (14), the thickness of the first body part (11) is greater than the exposed length of the valve stem (22) in the open state of the manual relay valve (20) of the wellhead control panel of the offshore oil and gas field, and the thickness of the second body part (12) is less than the exposed length of the valve stem (22) in the open state of the manual relay valve (20) of the wellhead control panel of the offshore oil and gas field.

2. A mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The first surface (10a) is a plane.

3. The mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The part of the second surface (10b) located in the first body part (11) is a plane, and the part of the second surface (10b) located in the second body part (12) is a plane. The part of the second surface (10b) located between the first body part (11) and the second body part (12) is an inclined surface.

4. The mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The thickness of the first body part (11) is 9.8-10.2mm.

5. The mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The thickness of the second body part (12) is 6.3-6.7mm.

6. The mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The body (10) is provided with a third through hole (15) penetrating through the first surface (10a) and the second surface (10b), and the first through hole (13) and the second through hole (14) are arranged in communication through the third through hole (15).

7. The mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The length of the body (10) is 33-37mm.

8. The mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The width of the body (10) is 23-27mm.

9. The mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The body (10) is an integral structure.

10. The mechanical limit device for manual relay valve of offshore oil and gas field wellhead control panel according to claim 1, characterized in that, The body (10) is a metal piece.

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