Oil drilling fluid outlet displacement control device

Abstract

The utility model discloses a petroleum drilling fluid outlet displacement control device, and relates to the technical field of oil well flow adjusting devices. The device comprises an auxiliary mechanism, the auxiliary mechanism comprises a buffering assembly and a sealing assembly, the buffering assembly comprises a liquid outlet pipe connected to the inner wall of a connecting box in a sliding mode, the left end of the liquid outlet pipe extends to the outside of the connecting box, and the inner wall of the connecting box is connected with a liquid inlet pipe in a sliding mode. According to the utility model, the flow of the drilling fluid is gently changed through the auxiliary mechanism, so that the situation that parts of the pump are damaged due to larger change of suction and discharge pressure of the pump caused by large fluctuation change of the flow of the drilling fluid is avoided, meanwhile, the pressure impact in a pipeline can be effectively reduced, and the water attack phenomenon generated when the flow of the drilling fluid is changed is avoided; the pressure borne by the pipelines is reduced, the situation that the pipelines are broken due to flow impact is effectively avoided, the integrity of a pipeline system is protected, and meanwhile the phenomenon of liquid leakage caused by looseness of the joints between the pipelines due to impact is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil well flow regulating device technical field, especially, relate to a kind of petroleum drilling fluid outlet discharge control device. BACKGROUND

[0002] Oil well is the key facility of exploiting petroleum, it penetrates into underground oil layer, is formed by wellhead device, casing, oil pipe and the like, is formed by professional drilling technology, and then petroleum is lifted to ground from formation by the aid of pumping unit and the like, and the yield and life of oil well are influenced by geological condition, exploitation technology and multiple factors, is the core production unit of petroleum industry, and provides guarantee for energy demand.

[0003] Oil output is very unstable in exploitation process, so the flow variation of oil is also very unstable, and the existing petroleum drilling fluid outlet discharge control device is not convenient for the flow variation of oil in pipeline to become gentle, thereby reducing the impact of oil on pipeline, reducing the abrasion of oil on inner wall of pipeline and loosening of connecting portion. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of petroleum drilling fluid outlet discharge control device, by being provided with auxiliary mechanism, the problem that the existing petroleum drilling fluid outlet discharge control device is not convenient for the flow variation of oil in pipeline to become gentle is solved.

[0005] To solve the above technical problem, the utility model is realized by the following technical scheme:

[0006] The utility model is a kind of petroleum drilling fluid outlet discharge control device, including connecting box, auxiliary mechanism and connecting mechanism are provided on the connecting box,

[0007] The auxiliary mechanism includes buffer assembly and sealing assembly, the buffer assembly includes the liquid outlet pipe of sliding connection in the inner wall of connecting box, the left end of the liquid outlet pipe extends to the outside of connecting box, the inner wall of the connecting box is slidingly connected with the liquid inlet pipe, the right end of the liquid inlet pipe extends to the outside of connecting box, the inner wall of the liquid inlet pipe is slidingly connected with buffer plate, two sliding grooves are formed in the inner wall of the liquid inlet pipe, the outer wall of the buffer plate is fixedly connected with two sliding blocks one, two sliding blocks one are slidingly connected with corresponding sliding groove, the inner wall of the liquid inlet pipe is fixedly connected with two support blocks, the right side of two support blocks is fixedly connected with telescopic rod one, spring one is sleeved on two telescopic rod one, the end, away from corresponding support block, of two telescopic rod one is fixedly connected with buffer plate.

[0008] Further, the sealing assembly comprises two sealing rings I fixedly connected to the liquid outlet pipe and the liquid inlet pipe close to one end of the connecting box, and the inner wall of the connecting box is fixedly connected with two sealing rings II, and the two sealing rings II are in contact with the corresponding sealing rings I.

[0009] Further, two annular grooves are arranged in the connecting box, and the inner bottom wall of each annular groove is fixedly connected with a plurality of telescopic rods II.

[0010] Further, a spring II is sleeved on each telescopic rod II, and two annular connecting plates are fixedly connected to the end of each telescopic rod II away from the inner bottom wall of the annular groove, the two annular connecting plates are in sliding connection with the corresponding annular grooves, and the two annular grooves are in fixed connection with the corresponding sealing rings II.

[0011] Further, the connecting mechanism comprises an adjusting assembly and a fixing assembly, the adjusting assembly comprises a motor fixedly connected to the top of the connecting box, the output shaft of the motor is fixedly connected with a rotating shaft through a shaft coupler, the bottom end of the rotating shaft extends into the interior of the connecting box and is in rotational connection with the connecting box, a supporting column is rotationally connected to the inner wall of the connecting box, an adjusting valve plate is fixedly connected between the rotating shaft and the supporting column, and the adjusting valve plate is in sliding connection with the inner wall of the connecting box.

[0012] Further, the fixing assembly comprises a plurality of positioning grooves arranged in the inner wall of the connecting box, and two positioning blocks are fixedly connected to the outer wall of the liquid outlet pipe and the liquid inlet pipe, and each positioning block is in sliding connection with the corresponding positioning groove.

[0013] Further, two drive cavities are arranged in the connecting box, and the inner wall of each drive cavity is rotationally connected with a bidirectional screw rod, the front end of each bidirectional screw rod extends to the outside of the connecting box and is in rotational connection with the connecting box, a knob is fixedly connected to the front end of each bidirectional screw rod, and two inner threaded blocks are threadedly connected to each bidirectional screw rod.

[0014] Further, a sliding rod is fixedly connected to the inner wall of each drive cavity, a sliding block II is slidably connected to each sliding rod, a connecting plate is fixedly connected between each inner threaded block and the corresponding sliding block II, a positioning pin is fixedly connected to each side of the corresponding two connecting plates, and the end of each positioning pin away from the corresponding connecting plate extends to the interior of the corresponding positioning block and is in sliding connection with the corresponding positioning block and the connecting box.

[0015] The utility model has the following beneficial effects:

[0016] 1. By setting the auxiliary mechanism, the drilling fluid enters the liquid inlet pipe, the drilling fluid will impact the buffer plate, so that the buffer plate moves, the buffer plate moves and drives the telescopic rod and the spring to retract, the buffer plate moves and drives the sliding block to slide in the sliding groove, the auxiliary mechanism changes the drilling fluid flow gently, avoids the large fluctuation of the drilling fluid flow, thereby causing the large change of the pump suction and discharge pressure, thereby damaging the pump parts, at the same time, the pressure impact in the pipeline can be effectively reduced, the water hammer phenomenon of the drilling fluid flow during the change is avoided, the pressure borne by the pipeline is reduced, the impact of the flow is effectively avoided to cause the pipeline rupture, the integrity of the pipeline system is protected, and the phenomenon of loose connection between the pipelines caused by the impact is also avoided, thereby avoiding the liquid leakage phenomenon.

[0017] 2. By setting the connecting mechanism, rotating the knob, the knob drives the bidirectional threaded rod to rotate when rotating, the bidirectional threaded rod drives the internal threaded block to move when rotating, the internal threaded block drives the connecting plate to move when moving, the connecting plate drives the sliding block to slide on the sliding rod when moving, and the connecting plate drives the positioning pin to move when moving. The connecting mechanism makes the liquid outlet pipe and the liquid inlet pipe easy to disassemble and install, so that when the liquid leakage phenomenon occurs, the pipeline can be quickly disassembled for inspection and repair, which greatly shortens the repair time and reduces the production stagnation time caused by pipeline failure. At the same time, the damaged part can be selectively repaired and replaced, avoiding large-scale modification of the entire pipeline system, thereby reducing the repair cost. When the pipeline is transported, it can be disassembled into multiple parts or units, thereby facilitating transportation.

[0018] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 It is a schematic diagram of the front view cross-sectional structure of the present application;

[0022] Figure 3 It is a schematic diagram of the structure of the liquid inlet pipe of the present application;

[0023] Figure 4 It is a schematic diagram of the structure of the liquid outlet pipe of the present application;

[0024] Figure 5 It is the structural schematic view of bidirectional screw rod of the utility model;

[0025] Figure 6 It is the structural schematic view of bidirectional screw rod of the utility model Figure 2 It is the enlarged structural schematic view of A.

[0026] In the drawings, the component list represented by each sign is as follows:

[0027] 1, connecting box;2, auxiliary mechanism;3, connecting mechanism;21, liquid outlet pipe;22, liquid inlet pipe;23, buffer plate;24, sliding chute;25, sliding block one;26, supporting block;27, telescopic rod one;28, spring one;29, sealing ring one;210, sealing ring two;211, annular groove;212, telescopic rod two;213, spring two;214, annular connecting plate;31, motor;32, rotating shaft;33, supporting column;34, regulating valve plate;35, positioning groove;36, positioning block;37, driving cavity;38, bidirectional screw rod;39, knob;310, internal thread block;311, sliding rod;312, sliding block two;313, connecting plate;314, positioning pin. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Please refer to Figures 1-6The utility model discloses a kind of petroleum drilling fluid outlet discharge capacity control devices, including connecting box 1, auxiliary mechanism 2 and connecting mechanism 3 are provided on connecting box 1, auxiliary mechanism 2 includes buffer assembly and sealing assembly, buffer assembly includes the liquid outlet pipe 21 slidingly connected in the inner wall of connecting box 1, the left end of liquid outlet pipe 21 extends to the outside of connecting box 1, the inner wall of connecting box 1 is slidingly connected with liquid inlet pipe 22, the right end of liquid inlet pipe 22 extends to the outside of connecting box 1, the inner wall of liquid inlet pipe 22 is slidingly connected with buffer plate 23, two sliding grooves 24 are set in the inner wall of liquid inlet pipe 22, the outer wall of buffer plate 23 is fixedly connected with two sliding blocks one 25, two sliding blocks one 25 are slidingly connected with corresponding sliding groove 24, the inner wall of liquid inlet pipe 22 is fixedly connected with two support blocks 26, the right side of two support blocks 26 is fixedly connected with telescopic rod one 27, spring one 28 is sleeved on two telescopic rod one 27, the end of two telescopic rod one 27 away from corresponding support block 26 is fixedly connected with buffer plate 23, sealing assembly includes two sealing rings one 29 fixedly connected in liquid outlet pipe 21 and liquid inlet pipe 22 close to the one end of connecting box 1, the inner wall of connecting box 1 is fixedly connected with two sealing rings two 210, two sealing rings two 210 are in contact with corresponding sealing ring one 29, two annular grooves 211 are set in the inside of connecting box 1, the inner bottom wall of two annular grooves 211 is fixedly connected with several telescopic rod two 212, spring two 213 is sleeved on several telescopic rod two 212, the end of several telescopic rod two 212 away from the inner bottom wall of annular groove 211 is fixedly connected with two annular connecting plates 214, two annular connecting plates 214 are slidingly connected with corresponding annular groove 211, two annular grooves 211 are fixedly connected with corresponding sealing ring two 210, through auxiliary mechanism 2, drilling fluid flow changes gently, avoid the flow fluctuation of drilling fluid to change greatly, to cause the suction and discharge pressure of pump to change greatly, to make the component of pump be damaged, can effectively reduce the pressure impact in pipeline simultaneously, avoid the water hammer phenomenon when drilling fluid flow changes, reduce the pressure that pipeline bears, effectively avoid the impact of flow to make pipeline rupture, protect the integrity of pipeline system, avoid the connecting place between pipeline loose simultaneously, to appear the phenomenon of liquid leakage.

[0030] The connecting mechanism 3 comprises an adjusting assembly and a fixing assembly, the adjusting assembly comprises a motor 31 fixedly connected to the top of the connecting box 1, an output shaft of the motor 31 is fixedly connected with a rotating shaft 32 through a shaft coupler, the bottom end of the rotating shaft 32 extends to the inside of the connecting box 1 and is rotationally connected with the connecting box 1, a support column 33 is rotationally connected to the inner wall of the connecting box 1, an adjusting valve plate 34 is fixedly connected between the rotating shaft 32 and the support column 33, the adjusting valve plate 34 is slidingly connected with the inner wall of the connecting box 1, the fixing assembly comprises a plurality of positioning grooves 35 formed in the inner wall of the connecting box 1, two positioning blocks 36 are fixedly connected to the outer walls of the liquid outlet pipe 21 and the liquid inlet pipe 22, the plurality of positioning blocks 36 are slidingly connected with the corresponding positioning grooves 35, two drive cavities 37 are formed in the inside of the connecting box 1, a bidirectional screw rod 38 is rotationally connected to the inner wall of each of the two drive cavities 37, the front end of each of the two bidirectional screw rods 38 extends to the outside of the connecting box 1 and is rotationally connected with the connecting box 1, a knob 39 is fixedly connected to the front end of each of the two bidirectional screw rods 38, two internally-threaded blocks 310 are threadedly connected to each of the two bidirectional screw rods 38, a sliding rod 311 is fixedly connected to the inner wall of each of the two drive cavities 37, a sliding block two 312 is slidingly connected to the sliding rod 311, a connecting plate 313 is fixedly connected between each of the plurality of internally-threaded blocks 310 and the corresponding sliding block two 312, a positioning pin 314 is fixedly connected to each of the two sides of each of the plurality of connecting plates 313, the end of each of the plurality of positioning pins 314 away from the corresponding connecting plate 313 extends to the inside of the corresponding positioning block 36 and is slidingly connected with the corresponding positioning block 36 and the connecting box 1, through the connecting mechanism 3, the liquid outlet pipe 21 and the liquid inlet pipe 22 are convenient to disassemble and install, so that when the liquid leakage phenomenon occurs, the pipeline can be quickly disassembled for inspection and repair, which greatly shortens the repair time, reduces the production stagnation time caused by pipeline failure, and selectively repairs and replaces the damaged part, avoiding large-scale modification of the entire pipeline system, thereby reducing the repair cost, and when the pipeline is transported, it can be disassembled into multiple parts or units, thereby facilitating transportation.

[0031] One specific application of the embodiment is: the oil drilling fluid enters from the right end of the liquid inlet pipe 22, passes through the connecting box 1, and finally is discharged through the left end of the liquid outlet pipe 21. When the oil drilling fluid enters the liquid inlet pipe 22, the drilling fluid will impact the buffer plate 23, so that the buffer plate 23 moves, and the buffer plate 23 moves to drive the telescopic rod one 27 and the spring one 28 to retract, thereby buffering the flow impact of the oil drilling fluid through the spring one 28, thereby reducing the impact of the drilling fluid on the pipeline and protecting the stability of the pipeline system. The buffer plate 23 will drive the sliding block one 25 to slide in the sliding groove 24 when moving, limiting the movement path of the buffer plate 23 through the sliding block one 25 and the sliding groove 24, and at the same time, the drilling fluid flow is shunted through the hole on the buffer plate 23, thereby further buffering the impact force of the drilling fluid flow. The sealing ring one 29 and the sealing ring two 210 seal the connection between the liquid outlet pipe 21 and the liquid inlet pipe 22 and the connecting box 1, avoiding the phenomenon of liquid leakage at the connection, and at the same time, the spring two 213 will drive the telescopic rod two 212 to stretch under the elastic action of itself. The telescopic rod two 212 will drive the annular connecting plate 214 to move after stretching, and the annular connecting plate 214 will drive the sealing ring two 210 to move when moving. Since the sealing ring two 210 is fixed, the annular connecting plate 214 will extrude the sealing ring two 210, thereby increasing the contact area between the sealing ring two 210 and the sealing ring one 29, and further enhancing the sealing effect.

[0032] Start the motor 31, the motor 31 drives the rotating shaft 32 to rotate, the rotating shaft 32 drives the adjusting valve plate 34 to rotate when rotating, thereby controlling the displacement of the drilling fluid through the rotation angle of the adjusting valve plate 34. When the liquid outlet pipe 21 and the liquid inlet pipe 22 are installed with the connecting box 1 respectively, the installation position of the liquid outlet pipe 21 and the liquid inlet pipe 22 is positioned through the positioning groove 35 and the positioning block 36, thereby improving the installation rate. Further rotate the knob 39, the knob 39 drives the bidirectional threaded rod 38 to rotate when rotating, the bidirectional threaded rod 38 drives the internal threaded block 310 to move when rotating, the internal threaded block 310 drives the connecting plate 313 to move when moving, the connecting plate 313 drives the sliding block two 312 to slide on the sliding rod 311 when moving, the internal threaded block 310 is limited through the sliding block two 312 and the sliding rod 311, and the rotational motion of the internal threaded block 310 is converted into linear motion. The connecting plate 313 drives the positioning pin 314 to move when moving, thereby making the end of the positioning pin 314 away from the connecting plate 313 inserted into the positioning block 36, thereby completing the fixation of the liquid outlet pipe 21 and the liquid inlet pipe 22.

[0033] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the 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 one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used for helping to explain the utility model. The preferred embodiments do not describe all the details exhaustively, and also do not limit the utility model to only the specific implementation manners described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited only by the claims and the entire scope and equivalents thereof.

Claims

1. A petroleum drilling fluid outlet discharge control device, comprising a connecting box (1), wherein an auxiliary mechanism (2) and a connecting mechanism (3) are arranged on the connecting box (1), characterized in that: the auxiliary mechanism (2) comprises a buffer assembly and a sealing assembly, the buffer assembly comprises a liquid outlet pipe (21) slidably connected to the inner wall of the connecting box (1), the left end of the liquid outlet pipe (21) extends to the outside of the connecting box (1), the inner wall of the connecting box (1) is slidably connected with a liquid inlet pipe (22), the right end of the liquid inlet pipe (22) extends to the outside of the connecting box (1), the inner wall of the liquid inlet pipe (22) is slidably connected with a buffer plate (23), the inner wall of the liquid inlet pipe (22) is provided with two sliding grooves (24), the outer wall of the buffer plate (23) is fixedly connected with two sliding blocks (25), the two sliding blocks (25) are slidably connected with the corresponding sliding grooves (24), the inner wall of the liquid inlet pipe (22) is fixedly connected with two supporting blocks (26), the right side of each of the two supporting blocks (26) is fixedly connected with a telescopic rod (27), the telescopic rod (27) is sleeved with a spring (28), and the end of the telescopic rod (27) away from the corresponding supporting block (26) is fixedly connected with the buffer plate (23).

2. A petroleum drilling fluid outlet flow rate control device according to claim 1, characterized in that, the sealing assembly comprises two sealing rings (29) fixedly connected to the liquid outlet pipe (21) and the liquid inlet pipe (22) near one end of the connecting box (1), and the inner wall of the connecting box (1) is fixedly connected with two sealing rings (210), and the two sealing rings (210) are in contact with the corresponding sealing rings (29).

3. An oil drilling fluid outlet flow control device according to claim 2, wherein, two annular grooves (211) are arranged in the inner bottom wall of the connecting box (1).

4. An oil drilling fluid outlet flow control device according to claim 3, wherein, a plurality of telescopic rods (212) are arranged in the inner bottom wall of the connecting box (1), and the telescopic rod (212) is sleeved with a spring (213), and the end of the telescopic rod (212) away from the inner bottom wall of the annular groove (211) is fixedly connected with two annular connecting plates (214), the two annular connecting plates (214) are slidably connected with the corresponding annular groove (211), and the two annular grooves (211) are fixedly connected with the corresponding sealing rings (210).

5. An oil drilling fluid outlet flow control device according to claim 4, wherein, the connecting mechanism (3) comprises an adjusting assembly and a fixing assembly, the adjusting assembly comprises a motor (31) fixedly connected to the top of the connecting box (1), the output shaft of the motor (31) is fixedly connected with a rotating shaft (32) through a shaft coupling, the bottom end of the rotating shaft (32) extends to the inside of the connecting box (1) and is rotatably connected with the connecting box (1), the inner wall of the connecting box (1) is rotatably connected with a supporting column (33), the adjusting valve plate (34) is fixedly connected between the rotating shaft (32) and the supporting column (33), and the adjusting valve plate (34) is slidably connected with the inner wall of the connecting box (1).

6. An oil drilling fluid outlet flow control device according to claim 5, wherein, The fixed assembly includes a plurality of positioning grooves (35) opened in the inner wall of the connecting box (1), and two positioning blocks (36) are fixedly connected to the outer walls of the liquid outlet pipe (21) and the liquid inlet pipe (22), and the plurality of positioning blocks (36) are slidably connected with the corresponding positioning grooves (35).

7. An oil drilling fluid outlet flow control device according to claim 6, wherein, The connecting box (1) is internally provided with two driving cavities (37), the inner walls of the two driving cavities (37) are rotatably connected with two bidirectional threaded rods (38), the front ends of the two bidirectional threaded rods (38) extend to the outside of the connecting box (1) and are rotatably connected with the connecting box (1), the front ends of the two bidirectional threaded rods (38) are fixedly connected with two knobs (39), and the two bidirectional threaded rods (38) are threadedly connected with two inner threaded blocks (310).

8. An oil drilling fluid outlet flow control device according to claim 7, wherein, The inner walls of the two driving cavities (37) are fixedly connected with two sliding rods (311), the two sliding rods (311) are slidably connected with two sliding blocks (312), a plurality of the inner threaded blocks (310) are fixedly connected with a connecting plate (313) between the corresponding sliding blocks (312), the corresponding two sides of the plurality of connecting plates (313) that are close to each other are fixedly connected with a positioning pin (314), and the ends of the plurality of positioning pins (314) that are away from the corresponding connecting plates (313) extend to the inside of the corresponding positioning blocks (36) and are slidably connected with the corresponding positioning blocks (36) and the connecting box (1).

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