Pressure relay adjusting tool for blowout preventer control device

Abstract

The utility model discloses a pressure relay adjusting tool for a blowout preventer control device. The pressure relay adjusting tool comprises a valve core of a rod body, a valve block, an operating hand wheel and a first dial, wherein the front end of the rod body is an outer hexagonal end; the valve block is connected to a screwed plug end of a pressure relay; the rear side of the valve element penetrates into a first through hole formed in the center of the valve block, the front side of a wheel rod of the operating hand wheel is inserted into the first through hole and matched with the rear end of the valve element, and a wheel body is perpendicularly fixed to the rear end of the operating hand wheel. The first dial is fixed to the rear end face of the valve block in the mode that the first dial and the valve block are coaxially arranged. A circle of scale marks are annularly distributed on the annular dial surface of the first dial, so that a plurality of pressure adjusting positions corresponding to the pressure adjusting range of the pressure relay are equally divided on the annular dial surface, pressure numerical values exist on the adjacent sides of the pressure adjusting positions, and arrow marks are arranged on the wheel rod; according to the adjusting tool, the current adjusting state can be visually and rapidly known, tiny or accurate stable adjustment can be achieved, the operation difficulty is reduced, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a blowout preventer control technical field, especially relates to a pressure relay adjustment tool for blowout preventer control device. BACKGROUND

[0002] Well control equipment is important equipment for discovering and handling well control danger. For well control equipment, it not only needs to meet the requirements of standard installation in the region, but also needs to ensure that the field operation personnel can master the correct operation essentials and scientific debugging method, especially the control system, and the pressure relay is an important accessory in the control system that needs to be debugged. The pressure relay can realize automatic control of the start and stop of the electric oil pump to supplement the oil pressure for the accumulator, thereby ensuring the reliable shut-in of the remote control console.

[0003] Currently, when the pressure of the pressure relay is debugged, the operation personnel usually adopt a valve core with a front end of a character end to cooperate with a cross-shaped groove provided on the end face of the pressure regulating mechanism in the pressure relay, and the valve core is rotated to a certain angle according to the operation experience to realize the regulation of the pressure value between the upper and lower limits of the pressure relay. However, this pressure regulating mode has problems of unstable debugging process, high error and the like, which not only wastes time and increases cost, but also increases the operation risk. Therefore, it is necessary to design a pressure relay special debugging tool that can simplify the operation process and realize convenient operation. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a pressure relay adjustment tool for blowout preventer control device that solves the above technical problems.

[0005] Therefore, the utility model technical scheme is as follows:

[0006] A pressure relay adjustment tool for a blowout preventer control device comprises a valve core, a valve block, an operating hand wheel and a first scale plate; wherein the valve core is a screw with a cross-shaped end at the front end, and the cross-shaped end is adapted to the cross-shaped groove on the end face of the pressure regulating mechanism in the pressure relay; the front end of the valve block is connected to the plug end of the pressure relay, and a first through hole is axially opened in the center thereof and is coaxially arranged with the pressure regulating hole, so that the rear side of the valve core is inserted into the first through hole, and a hexagonal blind hole is axially opened from the rear end of the valve core; the operating hand wheel is composed of a wheel body and a wheel rod; the front side of the wheel rod is inserted into the first through hole, and the front end is an outer hexagonal end that is inserted into the hexagonal blind hole, and the wheel body is vertically installed and fixed on The rear end of the wheel rod; the first scale plate is an annular disk body, which is fixed on the rear end surface of the valve block in a coaxial arrangement with the valve block; a circle of scale lines is arranged in a circular ring on the annular disk surface of the first scale plate, and the intervals between adjacent scale lines are the same, so that a plurality of pressure adjustment positions corresponding to the pressure adjustment range of the pressure relay are equally divided on the annular disk surface; each pressure adjustment position is marked with a pressure value corresponding to the pressure adjustment value of the pressure relay; on the rear outer wall of the wheel rod, an arrow mark is provided along the axial direction of the rod body with an arrow pointing to the front end of the wheel rod, and the arrow mark initially points to the scale line 0 of the first scale plate when the pressure value of the pressure relay is 0.

[0007] Furthermore, the rear end hole wall of the first through hole is larger than the front side hole wall, and a first annular step is formed at the diameter change point; an annular boss is provided on the outer wall of the wheel rod, which is arranged at the rear end of the first through hole in such a way that there is an annular gap; a locking block is sleeved on the outer side of the annular boss, which is embedded in the rear end of the first through hole and fixed to the valve seat by a plurality of fastening screws evenly distributed along the circumferential direction; the locking block is a cylindrical body formed by two arc-shaped blocks, the front end aperture of which is larger than the rear end aperture, and a second annular step is formed at the diameter change point, so that the front end and rear end of the annular boss respectively abut against the first annular step and the second annular step.

[0008] Furthermore, a connecting external thread is provided on the inner annular groove wall of the annular groove of the valve block, so that the plug end is inserted and threadedly connected in the annular groove of the valve block.

[0009] Furthermore, a hexagonal blind hole is opened axially in the center of the bottom end face of the valve core, and the front end of the wheel rod is set as an outer hexagonal end adapted to the inner hexagonal blind hole, so that the outer hexagonal end of the wheel rod is inserted and fitted into the inner hexagonal blind hole of the valve core.

[0010] Furthermore, an annular groove with a built-in sealing ring is provided on the middle hole wall of the first through hole, so that a sealing fit is formed between the wheel rod and the valve block.

[0011] Further, the pressure relay adjusting tool for the blowout preventer control device is characterized in that the tool further comprises a second scale disc; the second scale disc is an annular disc body which is coaxially arranged on the annular end face at the rear end of the wheel body; a plurality of scale lines are arranged in a circle on the annular disc face of the second scale disc, and the adjacent scale lines are equally spaced to divide the annular disc face into a plurality of pressure adjustment positions corresponding to the pressure adjustment range of the pressure relay; and the pressure values marked on the pressure adjustment positions on the second scale disc are opposite to the sequence of the pressure value marks on the first scale disc.

[0012] Further, the inner diameter of the wheel body is larger than the outer diameter of the valve block, so that the second scale disc is coaxially arranged with the first scale disc in the horizontal direction.

[0013] Compared with the prior art, the pressure relay adjusting tool for the blowout preventer control device has a reasonable structure and is easy to operate; when the pressure value of the pressure relay needs to be adjusted, the valve core is inserted into the pressure adjustment hole of the pressure relay in a manner that the arrow mark on the adjusting hand wheel is aligned with the 0 position of the scale line on the first scale disc, and then the pressure adjustment is completed according to the manner that the arrow mark is aligned with the scale line on the first scale disc corresponding to the pressure value to be adjusted, so that the current adjustment state can be intuitively and quickly understood, the adjustment is realized, and small or accurate stable adjustment is realized, thereby reducing the operation difficulty and improving the work efficiency, and the tool can be widely applied to various occasions requiring accurate adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a structural schematic view of the pressure relay adjusting tool for the blowout preventer control device of the present application;

[0015] Figure 2 Fig. 2 is a top view of the operation hand wheel of the pressure relay adjusting tool for the blowout preventer control device of the present application;

[0016] Figure 3 Fig. 3 is a structural schematic view of the first scale disc of the pressure relay adjusting tool for the blowout preventer control device of the present application;

[0017] Figure 4 Fig. 4 is a structural schematic view of the second scale disc of the pressure relay adjusting tool for the blowout preventer control device of the present application;

[0018] Figure 5 Fig. 5 is a structural schematic view of the pressure relay adjusting tool for the blowout preventer control device of the present application in the pressure adjustment state of the pressure relay. DETAILED DESCRIPTION

[0019] The utility model will be further described in connection with the drawings and specific embodiments, but the following examples by no means have any limit to the utility model.

[0020] Referring to Figure 1 The pressure adjustment of the pressure relay 1 is realized through the pressure adjustment hole arranged thereon. Specifically, a pressure adjustment mechanism is threadedly connected in the pressure adjustment hole, and a cross-shaped groove is arranged on the end face of the pressure adjustment mechanism. When adjusting the pressure value of the pressure relay, a tool needs to be inserted into the pressure adjustment hole, and the front end of the tool needs to be matched with the cross-shaped groove on the pressure adjustment mechanism, so that the pressure adjustment mechanism in the pressure adjustment hole is driven to rotate synchronously while the tool is rotating, so as to adjust the setting depth of the pressure adjustment mechanism in the pressure adjustment hole, thereby completing the adjustment of the pressure value. That is, when the pressure adjustment mechanism rotates at different angles in a certain direction from the initial position (the position where the pressure value is 0), the position of the pressure adjustment mechanism in the pressure adjustment hole is different, and the current pressure value of the pressure relay is different. In addition, a plug end 101 for mounting a sealing plug is further outwardly extended on the relay 1 shell at the position where the pressure adjustment hole is arranged, and an inner thread is arranged on the inner wall of the plug end 101. Generally, the plug is threadedly connected and fixed in the plug end 101 to meet the explosion-proof requirement of the pressure relay 1. When it is necessary to adjust the pressure value of the pressure relay 1, the plug needs to be removed.

[0021] Based on this, the blowout preventer control device pressure relay adjustment tool comprises a valve core 2, a valve block 3, a lock block 6, an operating hand wheel 7 and a first scale disc 8.

[0022] The valve core 2 is a cylindrical screw rod with a cross-shaped end head at the front end. The outer diameter and the outer thread part thereof are respectively adapted to the inner diameter and the inner thread part of the pressure adjustment hole, and the cross-shaped end head is adapted to the cross-shaped groove on the end face of the pressure adjustment mechanism, so that the valve core 2 can be threadedly arranged in the pressure adjustment hole, and the cross-shaped end head thereof is matched with the cross-shaped groove of the pressure adjustment mechanism. When the valve core 2 rotates in the pressure adjustment hole, the position of the pressure adjustment mechanism relative to the pressure adjustment hole is changed, thereby completing the adjustment of the pressure value of the pressure relay 1.

[0023] The valve block 3 is a cylindrical barrel with a first through hole in the center along the axial direction; wherein, an annular groove is formed around the first through hole from the front end surface of the valve block 3 along the axial direction, the shape and size of the annular groove are adapted to the shape and size of the plug end 101 of the pressure relay 1, so that the valve block 3 can be inserted and connected with the plug end 101 of the pressure relay 1 through the annular groove; in order to facilitate the adjustment tool to be connected with the pressure relay 1 in actual use, the inner annular groove wall of the annular groove formed on the valve block 3 is provided with a connecting external thread, and the connecting external thread cooperates with the connecting internal thread on the inner wall of the plug end 101, so that the plug end 101 can be inserted and threadedly connected in the annular groove of the valve block 3, thereby realizing the connection and fixation of the valve block 3 on the pressure relay 1.

[0024] The rear end aperture of the first through hole of the valve block 3 is larger than the front side aperture, and a first annular step is formed at the variable diameter; the front side aperture of the first through hole is adapted to the outer diameter of the valve core 2, so that the valve core 2 is inserted at the rear side in the first through hole; a blind hole for an inner hexagon is formed in the center of the axial direction from the bottom end surface of the valve core 2, which is used for assembling the operating hand wheel 7.

[0025] Referring to Figure 2 , the operating hand wheel 7 is composed of a wheel body 701 and a wheel rod 702; specifically, the wheel rod 702 is a cylindrical rod body, which is inserted at the front side in the first through hole of the valve block 3; in order to realize the synchronous rotation of the valve core 2 driven by the wheel rod 702, the front end of the wheel rod 702 is processed into an outer hexagonal end adapted to the inner hexagonal blind hole of the valve core 2, so that the wheel rod 702 and the valve core 2 are embedded and matched through the outer hexagonal end and the inner hexagonal blind hole; the annular boss 703 is provided on the front side outer wall of the wheel rod 702, the outer diameter of the annular boss 703 is smaller than the front end aperture of the first through hole, so that it is arranged in the rear end of the first through hole in the form of an annular gap; the wheel body 701 is vertically installed and fixed at the rear end of the wheel rod 702.

[0026] The lock block 6 is a cylindrical barrel with a second through hole in the center and is split into two arc-shaped blocks, so that the lock block 6 is sleeved outside the annular boss 703 by abutting the two arc-shaped blocks; wherein the outer diameter of the lock block 6 is adapted to the rear end hole diameter of the first through hole, so that the lock block 6 can be embedded inside the rear end of the first through hole and fixed on the valve block 3 by two symmetrically arranged fastening screws; the front end hole diameter of the second through hole of the lock block 6 is larger than the rear end hole diameter, and a second annular step is formed at the diameter change; the outer diameter of the annular boss 703 is adapted to the front end hole diameter of the second through hole, so that the annular boss 703 on the wheel rod 702 is built inside the front end of the second through hole, and the front end and the rear end of the annular boss 703 abut on the first annular step and the second annular step, respectively; further, by cooperating the valve body 3, the lock block 6 and the annular boss 703 on the wheel rod 702, a limiting structure is formed to limit the forward and backward movement of the operation hand wheel 7 relative to the valve core 2, which not only avoids the separation of the operation hand wheel 7 from the valve core 2 during adjustment, but also does not affect the free rotation of the operation hand wheel 7 relative to the valve block 3; wherein the axial length of the outer hexagonal end of the wheel rod 702 is adapted to the pressure adjustment stroke length of the pressure adjusting mechanism in the pressure relay 1; in actual application, the position of the wheel rod 702 does not change under the structure cooperation of the lock block 6 and the valve block 3, and the valve core 2 not only rotates synchronously but also continuously moves relative to the wheel rod 702 into the pressure relay 1 under the cooperation of the front end of the wheel rod 702 and the outer hexagonal end, so as to realize the pressure value adjustment of the pressure relay 1.

[0027] As a preferred technical solution of the present embodiment, an annular groove provided with a sealing ring 4 is formed on the front side hole wall of the first through hole, so that the wheel rod 702 and the valve block 3 form a tight fit through the sealing ring 4.

[0028] The first dial 8 is an annular disc body which is coaxially arranged with the valve block 3 and fixed on the rear end surface of the valve block 3; a circle of scale lines is arranged in a circular ring shape on the annular disc surface of the first dial 8, and the adjacent scale lines have the same interval distance, so that multiple pressure adjustment positions corresponding to the pressure adjustment range of the pressure relay 1 are equally divided on the annular disc surface; each pressure adjustment position is marked with a pressure value corresponding to the pressure adjustment value of the pressure relay 1.

[0029] In the embodiment, the pressure regulating value range of the pressure relay 1 is 0-10 MPa, which can be achieved by rotating the pressure regulating hole in the clockwise direction by one turn through a tool; correspondingly, on the first scale disc 8, there are 10 long scale lines arranged in a circular ring shape, and on the adjacent positions of the 10 long scale lines, from the position of the initial pressure regulating hole value of 0, the positions are marked in the clockwise direction as 0, 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, for respectively corresponding to the 11 pressure regulating values of 0 MPa, 1 MPa, 2 MPa, 3 MPa, 4 MPa, 5 MPa, 6 MPa, 7 MPa, 8 MPa, 9 MPa, 10 MPa in the rotating process of the pressure regulating hole, wherein, when the pressure regulating hole continues to rotate in the clockwise direction from the position of the scale line 9 to the position of the scale line 0, the pressure value of the current pressure relay 1 is adjusted to 10 MPa; then, 9 short scale lines are arranged at equal intervals between every two long scale lines, so as to divide each interval of 1 MPa into 10 parts, so that the accuracy of the pressure regulation realized by the first scale disc 8 reaches 0.1 MPa.

[0030] Corresponding to the first scale disc 8 arranged on the valve block 3, an arrow mark 705 is arranged on the rear side outer wall of the wheel rod 702 in the axial direction of the rod body, and the arrow of the arrow mark 705 faces the front end of the wheel rod 702; in actual application, the initial pressure relay adjusting tool is inserted into the pressure relay 1 with the arrow mark 705 on the wheel rod 702 located at the top side, so that the arrow of the arrow mark 705 initially points to the scale line 0 position of the first scale disc 8 when the pressure value of the relay 1 is 0; further, in the process of rotating the adjusting operation hand wheel 7, the current pressure regulating value of the pressure relay 1 by the adjusting operation hand wheel 7 can be determined by observing the scale line position of the arrow mark 705 on the first scale disc 8.

[0031] As a preferred technical solution of the embodiment, the pressure relay adjusting tool further comprises a second scale disc 9; the second scale disc 9 is an annular disc body, which is fixed on the annular end face of the rear end of the wheel body 701 in a coaxial arrangement with the wheel body 701; on the annular disc face of the second scale disc 9, there is a circle of scale lines arranged in a circular ring shape, and the adjacent scale lines have the same interval distance, so as to divide the annular disc face into a plurality of pressure regulating positions corresponding to the pressure regulating range of the pressure relay 1; the pressure value marked on each pressure regulating position of the second scale disc 9 is opposite to the pressure value marked on the first scale disc 8 in the order.

[0032] In the embodiment, 10 long scale lines are first arranged in a circular ring on the second dial 9, and the adjacent positions of the 10 long scale lines are marked in the counterclockwise direction as 0, 1, 2, …, 9 from the position of the initial pressure value of the pressure adjusting hole being 0, so as to correspond to 11 pressure adjusting values of 0 MPa, 1 MPa, 2 MPa, …, 9 MPa, 10 MPa in the rotation process of the pressure adjusting hole respectively; then, 9 short scale lines are arranged at equal intervals between every two long scale lines, so that 1 MPa in each interval is divided into 10 parts, and the precision of the pressure adjustment corresponding to the second dial 9 is 0.1 MPa.

[0033] In actual application, taking the pressure value of the pressure relay 1 needing to be adjusted from 0 MPa to 5 MPa as an example: the operating handle 7 is rotated clockwise until the arrow mark 705 on the operating handle 7 points to the scale line 5 on the first dial 8, at this time, the scale line 5 on the second dial 9 of the operating handle 7 is aligned with the scale line 0 on the first dial 8, that is, through the observation of the two dials, it can also be determined that the current adjustment tool adjusts the pressure value of the pressure relay 1.

[0034] In order to realize the intuitive observation between the first dial 8 and the second dial 9, the inner diameter of the wheel body 701 is larger than the outer diameter of the valve block 3, so that the first dial 8 is arranged in a concentric manner in the horizontal direction; at this time, the corresponding relationship of the scale lines between the two dials can be more intuitively obtained.

Claims

1. A pressure relay adjustment tool for a blowout preventer control device, characterized by, The utility model relates to a pressure regulating device of pressure relay, including valve core (2), valve block (3), operating hand wheel (7) and first dial (8), wherein, valve core (2) is a screw rod with cross-shaped end, and its cross-shaped end is adapted with the cross-shaped recess on the end face of pressure regulating mechanism in pressure relay (1), valve block (3) is connected on the plug end (101) of pressure relay (1) on the front end, and the first through hole coaxial with pressure regulating hole is formed in the center along the axial direction, so that the rear side of valve core (2) is inserted in the first through hole, and the hexagonal blind hole is formed along the axial direction from the rear end of valve core (2), operating hand wheel (7) is composed of wheel body (701) and wheel rod (702), the front end of wheel rod (702) is the outer hexagonal end inserted and matched with the hexagonal blind hole, and wheel body (701) is vertically installed and fixed on the rear end of wheel rod (702), first dial (8) is an annular disc body, which is fixed on the rear end surface of valve block (3) in the coaxial manner with valve block (3), a circle of scale lines is arranged in the annular disc surface of first dial (8) in the form of circular ring, and the adjacent scale lines have the same interval distance, so that multiple pressure regulating positions corresponding to the pressure regulating range of pressure relay (1) are equally divided on the annular disc surface, and each pressure regulating position is marked with the pressure value corresponding to the pressure regulating value of pressure relay (1), the arrow mark (705) with the arrow pointing to the front end of wheel rod (702) is arranged on the rear side outer wall of wheel rod (702) along the axial direction of rod body, and the arrow mark (705) initially points to the scale line 0 of first dial (8) when the pressure value of pressure relay (1) is 0.

2. The blowout preventer control device pressure relay adjustment tool of claim 1, wherein, The rear end hole wall of first through hole is larger than the front side hole wall, and the first annular step is formed at the variable diameter portion, the annular boss (703) is arranged on the outer wall of wheel rod (702) in the rear end of first through hole in the form of annular gap, the lock block (6) is sleeved on the outer side of annular boss (703), the lock block (6) is embedded in the rear end of first through hole and is fixed with valve block (3) through the multiple fastening screws arranged along the circumferential direction, the lock block (6) is the cylinder formed by the two arc-shaped block bodies, the front end hole diameter is larger than the rear end hole diameter, and the second annular step is formed at the variable diameter portion, so that the front end and the rear end of annular boss (703) abut on the first annular step and the second annular step respectively.

3. The blowout preventer control device pressure relay adjustment tool of claim 1, wherein, The connecting external thread is arranged on the inner annular groove wall of annular groove of valve block (3), so that the plug end (101) is inserted and threadedly connected in the annular groove of valve block (3).

4. The blowout preventer control device pressure relay adjustment tool of claim 1, wherein, The annular groove with sealing ring (4) is formed on the middle hole wall of first through hole, so that the sealing cooperation between wheel rod (702) and valve block (3) is formed.

5. The blowout preventer control device pressure relay adjustment tool of claim 1, wherein, The second dial (9) is an annular disc body, which is fixed on the annular end surface of the rear end of the wheel body (701) in a coaxial manner with the wheel body (701); a circle of scale lines is arranged in a circular ring on the annular disc surface of the second dial (9), and the adjacent scale lines have the same interval distance, so that multiple pressure regulating positions corresponding to the pressure regulating range of the pressure relay (1) are equally divided on the annular disc surface; the pressure value marked on each pressure regulating position on the second dial (9) is opposite to the pressure value marking sequence on the first dial (8).

6. The blowout preventer control device pressure relay adjustment tool of claim 1, wherein, The inner diameter of the wheel body (701) is larger than the outer diameter of the valve block (3), so that the second dial (9) is arranged in a concentric manner with the first dial (8) in the horizontal direction.

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