Negative pressure automatic drainage device

Abstract

The application discloses a kind of negative pressure automatic drainage device, including with the drainage pipe of the blowout preventer's discharge port connection;And the drainage tee pipe is communicated with drainage pipe, drainage tee pipe lower part is provided with control component, control component is used to control the communication state of drainage pipe;Control component is communicated with blowout preventer box by high pressure pipe.The automatic drainage device of the application sets the control component of pressure control in the lower part of drainage tee pipe, the position of solid rubber ball of vibrating screen is controlled by nylon piston by the change of pressure to control the switch of drainage pipe, response timely, realizes automatic control, and ensure that gas cannot be leaked from drainage port.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine drilling operation, and in particular to a negative pressure automatic drainage device connected with a blowout preventer tank. BACKGROUND

[0002] When drilling a mine, the drainage device of the blowout preventer tank adopts a ball valve to control the drainage of water in the tank, and the worker can only determine whether to drain water by observing the water level gauge.

[0003] In the prior art, due to the poor internal environment of the mine, it is difficult to observe the water level gauge, and when the water is not drained in time, the water and slag in the internal slag discharge tank of the blowout preventer tank will flow into the gas storage tank, thereby reducing the storage space and greatly reducing the use effect of the blowout preventer tank.

[0004] Therefore, based on the above technical problems, the technical personnel in the field urgently need to develop a negative pressure automatic drainage device. SUMMARY

[0005] The purpose of the present application is to provide a negative pressure automatic drainage device which communicates with the device through a high-pressure pipe to control the opening and closing of a drainage tee by pressure, realizes automatic control, and has good responsiveness and timeliness.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme:

[0007] The negative pressure automatic drainage device of the present application is connected below the slag discharge port of the blowout preventer tank, and comprises:

[0008] a drainage pipe connected with the slag discharge port of the blowout preventer tank; and

[0009] a drainage tee in communication with the drainage pipe, wherein the lower part of the drainage tee is provided with a control assembly for controlling the communication state of the drainage pipe;

[0010] The control assembly communicates with the blowout preventer tank body through a high-pressure pipe.

[0011] Further, the drainage pipe comprises:

[0012] a main pipe located in the middle, wherein the main pipe is a steel pipe;

[0013] a 90° elbow connected to one end of the main pipe, and the specification of the 90° elbow is DN50;

[0014] the other end of the main pipe is connected to an end pipe through the drainage tee, wherein the end pipe is a steel pipe, and the specification of the end pipe is DN50;

[0015] the size of the main pipe is φ60mm*3.5mm, and the length of the main pipe is 320mm.

[0016] Further, the drain tee is a DN50 internal thread tee;

[0017] The interface of the lower end of the drain tee is provided with the control assembly.

[0018] Further, the control assembly comprises:

[0019] A control pipe in threaded connection with the interface of the lower end of the drain tee, the control pipe being a φ60mm*3.5mm steel pipe; and

[0020] A nylon piston in the control pipe, the nylon piston dividing the internal space of the control pipe into two parts, i.e. an upper space and a lower space;

[0021] A vibrating screen solid rubber ball is placed in the upper space in the control pipe, and the diameter of the vibrating screen solid rubber ball is 40mm;

[0022] The nylon piston is movable in the axial direction of the control pipe, and when the nylon piston moves in the axial direction of the control pipe towards the side of the drain tee, the vibrating screen solid rubber ball enters the drain tee and blocks the drain tee to close the communication state of the drain tee.

[0023] Further, the high-pressure pipe is in communication with the lower space of the control pipe.

[0024] Further, the connection between the control pipe and the drain tee is provided with an O-shaped sealing ring, and the size of the O-shaped sealing ring is φ55mm*3.5mm.

[0025] Further, a spring is connected to the lower part of the rod of the nylon piston.

[0026] Further, an outer cover is installed at the bottom of the control pipe.

[0027] In the above technical solution, the negative pressure automatic drain device provided by the present application has the following advantages

[0028] Advantages:

[0029] The automatic drain device of the present application is provided with a control assembly for pressure control at the lower part of the drain tee, and the position of the vibrating screen solid rubber ball is controlled by the nylon piston through the change of pressure to control the opening and closing of the drain pipe, which is responsive and timely, realizes automatic control, and ensures that the gas cannot leak from the drain port. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to make the technical solution of the embodiments of the present application or the prior art clearer, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0031] Fig. 1 A structure schematic diagram of the negative pressure automatic drainage device provided by the embodiment of the present application is shown in the figure.

[0032] Fig. 2 An exploded view of the negative pressure automatic drainage device provided by the embodiment of the present application is shown in the figure.

[0033] Fig. 3 A connection structure schematic diagram of the high-pressure pipe and the control assembly of the negative pressure automatic drainage device provided by the embodiment of the present application is shown in the figure.

[0034] Explanation of reference signs:

[0035] 1, drainage pipe; 2, drainage tee; 3, control assembly; 4, high-pressure pipe;

[0036] 101, main pipe; 102, 90° elbow; 103, end pipe;

[0037] 301, control pipe; 302, nylon piston; 303, vibrating screen solid rubber ball; 304, O-shaped sealing ring; 305, spring; 306, outer cover; 307, upper space; 308, lower space. DETAILED DESCRIPTION

[0038] In order to make those skilled in the art better understand the technical solution of the present application, the present application will be further described in detail with reference to the drawings.

[0039] Referring to Figs. 1-3 the figure;

[0040] The negative pressure automatic drainage device of the present application is connected below the slag discharge port of the blowout preventer tank, and the drainage device comprises:

[0041] The drainage pipe 1 connected with the slag discharge port of the blowout preventer tank; and

[0042] The drainage tee 2 in communication with the drainage pipe 1, and the control assembly 3 is arranged at the lower part of the drainage tee 2, and the control assembly 3 is used to control the communication state of the drainage pipe 1;

[0043] The control assembly 3 is in communication with the blowout preventer tank body through the high-pressure pipe 4.

[0044] Specifically, the embodiment discloses a drainage device connected to a deslagging port of a blowout preventer, which is characterized in that a drainage tee 2 is connected to the middle part of a drainage pipe 1, and the drainage tee 2 is controlled by a control assembly 3 connected to the lower part to control the opening and closing of the drainage pipe 1. The control assembly 3 is automatically controlled by changing the internal pressure of the control assembly 3 with the change of the gas condition when the high-pressure pipe 4 is connected to the box.

[0045] Preferably, the drainage pipe 1 comprises:

[0046] The middle part is a main pipe 101, and the main pipe 101 is a steel pipe;

[0047] A 90° elbow 102 is connected to one end of the main pipe 101, and the specification of the 90° elbow 102 is DN50;

[0048] The other end of the main pipe 101 is connected to an end pipe 103 through the drainage tee 2, the end pipe 103 is a steel pipe, and the specification of the end pipe 103 is DN50;

[0049] The size of the main pipe 101 is φ60mm*3.5mm, and the length of the main pipe 101 is 320mm.

[0050] Preferably, the drainage tee 2 is an internal thread tee with a specification of DN50;

[0051] The interface at the lower end of the drainage tee 2 is provided with the control assembly 3.

[0052] The control assembly 3 comprises:

[0053] A control pipe 301 is threadedly connected to the interface at the lower end of the drainage tee 2, and the control pipe 301 is a steel pipe with a size of φ60mm*3.5mm; and

[0054] A nylon piston 302 is arranged in the control pipe 301, and the nylon piston 302 divides the internal space of the control pipe 301 into two parts, i.e., an upper space 307 and a lower space 308;

[0055] A vibrating screen solid rubber ball 304 is arranged in the upper space 307 in the control pipe 301, and the diameter of the vibrating screen solid rubber ball 304 is 40mm;

[0056] The nylon piston 302 is movable in the axial direction of the control pipe 301, and when the nylon piston 302 moves in the axial direction of the control pipe 301 towards the side of the drainage tee 2, the vibrating screen solid rubber ball 304 enters the drainage tee 2 and blocks the drainage tee 2 to close the communication state of the drainage tee 2.

[0057] In order to control the nylon piston 302 in the control assembly 3, the high-pressure pipe 4 of the embodiment is communicated with the lower space 308 of the control pipe 301.

[0058] In order to ensure the sealing of the connection between the control assembly 3 and the drainage tee 2, so as to ensure the control accuracy, the control pipe 301 of the embodiment is provided with an O-shaped sealing ring 303 at the connection with the drainage tee 2, and the size of the O-shaped sealing ring 303 is φ55mm*3.5mm.

[0059] In order to further assist the control of the return of the nylon piston 302, the lower part of the rod of the nylon piston 302 is connected with a spring 305.

[0060] The bottom of the control pipe 301 of the embodiment is provided with an outer cover 306.

[0061] When the mine is normally drilling, the gas in the coal seam is connected with the gas drainage system through the blowout preventer box, the gas drainage system is a negative pressure system, and the inside of the blowout preventer box is in a negative pressure state. Since one end of the high-pressure pipe 4 is connected with the box body and the other end is communicated with the lower space 308 of the control pipe 301, under the action of negative pressure, the nylon piston 302 is driven to move downward, and the solid rubber ball 304 of the vibrating screen is away from the drainage tee 2. At this time, the drainage pipe 1 can be communicated and automatic drainage can be realized. When the gas is outburst, the lower space of the control pipe 301 becomes a positive pressure space, under the double actions of the spring force of the spring 305 and the positive pressure, the piston moves to the side of the drainage pipe 1, and the solid rubber ball 304 of the vibrating screen blocks the drainage tee 2, so that the gas cannot leak from the drainage port.

[0062] In the above technical solution, the negative pressure automatic drainage device provided by the embodiment has the following advantages

[0063] Beneficial effects:

[0064] The automatic drainage device of the embodiment sets the control assembly 4 controlled by pressure at the lower part of the drainage tee 2, controls the position of the solid rubber ball 304 of the vibrating screen by changing the pressure by using the nylon piston 302 to control the opening and closing of the drainage pipe 1, responds timely, realizes automatic control, and ensures that the gas cannot leak from the drainage port.

[0065] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above figures and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A negative pressure automatic drainage device, characterized in that, The drainage device is connected below the slag discharge port of the blowout preventer, and the drainage device includes: The drain pipe (1) connected to the slag discharge port of the blowout preventer; and A drain tee (2) is connected to the drain pipe (1), and a control component (3) is provided at the lower part of the drain tee (2). The control component (3) is used to control the connection state of the drain pipe (1). The control component (3) is connected to the blowout box body via a high-pressure pipe (4); The control component (3) includes: A control pipe (301) threadedly connected to the lower end of the drain tee (2), wherein the control pipe (301) is a φ60mm*3.5mm steel pipe; and The nylon piston (302) located inside the control tube (301) divides the internal space of the control tube (301) into two parts, namely the upper space (307) and the lower space (308). A solid rubber ball (304) of a vibrating screen is placed in the upper space (307) of the control tube (301), and the diameter of the solid rubber ball (304) of the vibrating screen is 40mm. The nylon piston (302) can move along the axial direction of the control tube (301). When the nylon piston (302) moves along the axial direction of the control tube (301) toward the drain tee (2), the solid rubber ball (304) of the vibrating screen enters the drain tee (2) and blocks the drain tee (2) to close the connection state of the drain tee (2). The connection between the control pipe (301) and the drain tee (2) has an O-ring (303), and the size of the O-ring (303) is φ55mm*3.5mm; A spring (305) is connected to the lower part of the rod of the nylon piston (302). When the mine is drilling normally, the gas in the coal seam is connected to the gas drainage system through the blowout preventer box. The gas drainage system is a negative pressure system. When the blowout preventer box is in a negative pressure state, one end of the high pressure pipe (4) is connected to the box body, and the other end is connected to the lower space (308) of the control pipe (301). Under the action of negative pressure, the nylon piston (302) will be driven to move downward, and the solid rubber ball (304) of the vibrating screen will be moved away from the drainage tee (2) to connect the drainage pipe (1) and realize automatic drainage. When gas is released, the space below the control pipe (301) becomes a positive pressure space. Under the combined action of the spring force of the spring (305) and the positive pressure, the piston moves toward the drain pipe (1) and uses the solid rubber ball (304) of the vibrating screen to block the drain tee (2) to ensure that gas does not leak from the drain outlet.

2. The negative pressure automatic drainage device according to claim 1, characterized in that, The drain pipe (1) includes: The main pipe (101) is located in the middle, and the main pipe (101) is a steel pipe; A 90° elbow (102) is connected to one end of the main pipe (101), and the specification of the 90° elbow (102) is DN50; The other end of the main pipe (101) is connected to the end pipe (103) through the drainage tee (2). The end pipe (103) is a steel pipe and the specification of the end pipe (103) is DN50. The main tube (101) has a size of φ60mm*3.5mm and a length of 320mm.

3. The negative pressure automatic drainage device according to claim 2, characterized in that, The drainage tee (2) is a DN50 internal thread tee; The control component (3) is provided at the lower end of the drainage tee (2).

4. The negative pressure automatic drainage device according to claim 1, characterized in that, The high-pressure pipe (4) is connected to the lower space (308) of the control pipe (301).

5. The negative pressure automatic drainage device according to claim 1, characterized in that, The bottom of the control tube (301) is fitted with an outer cover (306).

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