A mud level alarm device

Abstract

The utility model discloses a kind of mud liquid level alarm device, belong to petroleum drilling equipment technical field;The utility model is provided with liquid level control mechanism, alarm box being set at the top of liquid level control mechanism;The liquid level control mechanism has liquid level indicating mechanism and limiting transmission mechanism;The base of the liquid level indicating mechanism is floatingly connected with float and float vertical rod, the top of the float vertical rod is fixedly connected with guide plate;The limiting transmission mechanism includes the touch lever that passes through the guide plate, and the touch lever is located at the both sides of the guide plate and is fixedly connected with limiting card;It further includes the reset spring for driving the touch lever reset being set in the box of the alarm box;Air horn, air control valve being communicated with the air path of the air horn and microswitch being linked with the air control valve and the touch lever are installed in the box, the utility model has the beneficial effects of simple installation, high adaptability, lower failure rate, timely and accurate alarm.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling equipment technology, and in particular to a mud level alarm device. Background Technology

[0002] Before a blowout or when there is a loss of well fluid in an oil well, the mud level will rise or fall sharply. Traditionally, when abnormal changes in mud level occur, they are displayed by the gauge and monitored by the operators visually. This method cannot guarantee timely and effective monitoring and poses safety hazards.

[0003] In the prior art, such as the pneumatic liquid level alarm disclosed in Chinese patent CN2651723Y, it is mainly composed of a float, a moving scale, a gas chamber shell, an upper and lower gas chamber connecting pipe, upper and lower valve seats, upper and lower gas chamber pipelines, upper and lower contact plates, a main gas chamber, upper and lower gas chambers, and a gas horn. After the alarm is installed on the tank, when the mud level rises or falls, the float drives the moving scale to move up and down, the upper and lower contact plates open the high and low position alarm valves, and the gas horn sounds an alarm to predict the possible occurrence of well kick, blowout, or well leakage.

[0004] Although the use of pneumatic liquid level alarms provides timely, accurate and effective forecasts, reduces missed and false alarms caused by human factors, and effectively improves the safety of well site operations, there are still drawbacks. Due to the great influence of the external environment, such as extreme weather like ice floes, the air horn may be damaged or the trigger switch may be frozen, affecting the alarm.

[0005] Therefore, based on the above problems, it is necessary to provide a new type of mud level alarm device that can monitor mud changes in a timely and accurate manner. Utility Model Content

[0006] The purpose of this invention is to overcome the defects of the existing technology and provide a mud level alarm device with low failure rate and timely and accurate alarm.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model discloses a mud level alarm device, comprising:

[0009] Liquid level control mechanism and alarm box installed on top of the liquid level control mechanism;

[0010] The liquid level control mechanism includes a liquid level indicating mechanism and a limit transmission mechanism;

[0011] A float and a float rod are floatingly connected to the base of the liquid level indicator mechanism, and a guide plate is fixedly connected to the top of the float rod.

[0012] The limiting and transmitting mechanism includes an actuating rod that penetrates the guide plate, and the actuating rod is fixedly connected to limiting clips on both sides of the guide plate; it also includes...

[0013] A reset spring is installed inside the alarm box to drive the trigger rod to reset.

[0014] The housing is equipped with an air horn, an air control valve connected to the air horn's air circuit, and a micro switch that is linked to the air control valve and the trigger rod.

[0015] Furthermore, a support riser and a ruler are fixedly connected to the upper part of the base, which penetrate the guide plate. The top of the support riser and the ruler are fixedly connected to the box body. The air inlet line of the pneumatic control valve is installed inside the support riser and its end is connected to the air inlet connector installed on the base.

[0016] Furthermore, the guide plate is connected to a pulley in the through hole of the support riser and the scale, and the pulley makes rolling contact with the support riser and the scale.

[0017] Furthermore, the scale is a flat square tube with a stainless steel rectangular structure.

[0018] Furthermore, the pneumatic control valve is in a closed state when not in operation, and the air source continuously supplies air from the air inlet connector.

[0019] Furthermore, both the inlet and outlet air lines of the pneumatic control valve are copper lines.

[0020] Furthermore, the float is detachably fixed to the bottom end of the float support rod via anti-detachment bolts.

[0021] Furthermore, the float is made of resin.

[0022] Furthermore, the base is a box structure that can cover the outside of the float.

[0023] Furthermore, the bottom and top of the box are both fixedly connected to the straightening sleeve at the through hole position of the trigger rod.

[0024] In the above technical solution, the mud level alarm device provided by this utility model has the following advantages:

[0025] Compared with existing technologies, the mud level alarm device designed in this utility model has a protective enclosure for the air circuit, air horn, and air control valve, making it less prone to freezing and malfunction in wind, rain, and snow. It is corrosion-resistant, impact-resistant during transport, simple to install, highly adaptable, and has a low failure rate. The scale is clear, the air horn is loud, the float is not easily damaged, and the air pipeline uses copper pipeline instead of traditional plastic pipe, which is not easy to oxidize and age, and is pressure-resistant, making it suitable for the cold winter regions of Northeast China and Inner Mongolia, and less prone to freezing and cracking. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of a mud level alarm device disclosed in this utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the alarm box of a mud level alarm device disclosed in this utility model;

[0029] Figure 3 This is a partially enlarged view of the float position of a mud level alarm device disclosed in this utility model;

[0030] Figure 4 This is a partially enlarged view of the microswitch position of a mud level alarm device disclosed in this utility model;

[0031] Explanation of reference numerals in the attached figures:

[0032] Alarm box 100; Liquid level indicator 200; Limit transmission mechanism 300

[0033] 1. Housing; 2. Air line; 3. Upper limit stop; 4. Guide plate; 5. Pulley; 6. Lower limit stop; 7. Support riser; 8. Actuating rod; 9. Float stand; 10. Scale; 11. Flange; 12. Air inlet connector; 13. Angle bracket; 14. Base; 15. Handle; 16. Float; 17. Upper spring; 18. Lower spring; 19. Air horn; 20. T-connector; 21. Air control valve; 22. Micro switch; 23. Air line; 24. Bolt. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0035] See Figure 1 As shown;

[0036] A utility model discloses a mud level alarm device, comprising: a level control mechanism and an alarm box 100;

[0037] The liquid level control mechanism includes a liquid level indicating mechanism 200 and a limit transmission mechanism 300;

[0038] The liquid level indicator 200 includes a guide plate 4, a support riser 7, a float rod 9, a scale 10, a base 14, and a float 16;

[0039] The lower end of the float rod 9 passes through the base 14 and is fixedly connected to the float 16. The upper end is fixedly connected to the guide plate 4. The guide plate 4 is located on the side of the float rod 9 and is respectively fitted with the scale 10 and the support tube 7. When the float rod 9 is pushed, the guide plate 4 can move up and down relative to the support tube 7 and the scale 10. The scale 10 and the support tube 7 are slidably connected to the guide plate 4 through the pulley 5. The lower end of the support tube 7 is fixedly connected to the base 14 of the alarm through the flange 11. The lower end of the scale 10 is fixedly connected to the base 14 of the alarm through the angle bracket 13. The alarm base 14 is installed on the surface of the mud tank. The top ends of the support tube 7 and the scale 10 are fixedly connected to the box 1. Preferably, the float 16 is a spherical structure made of resin material, which has high buoyancy and is corrosion resistant. The bottom end of the float rod 9 is fixedly connected to the integrally welded float 16.

[0040] See Figure 3 As shown, preferably, the end of the float support 9 is detachably fixedly connected to the float 16 via the handle 15. Specifically, the top of the handle 15 is fixedly connected to the float 16 via bolts, and the bottom of the handle 15 is connected to the float support 9 and the float 16 via bolts respectively, so that the float support 9 and the float 16 can be disassembled, making it convenient to replace the float support 9 or the float 16 separately.

[0041] Preferably, the base 14 is a box structure that can cover the outside of the float 16. The base 14 can protect the air inlet nozzle and air inlet wiring. The size of the base 14 is designed according to the size of the float 16 (φ280mm). The float 16 can freely enter the base 14. This design ensures that once an alarm is triggered, maintenance can be performed by simply removing the fixing bolts of the base 14 to replace or repair the float 16.

[0042] Preferably, the guide plate 4 is connected to the pulley 5 in the through hole of the support riser 7 and the scale 10. The pulley 5 makes rolling contact with the support riser 7 and the scale 10. Through the pulley 5, the scale 10 and the connection between the support riser 7 and the guide plate 4, since the float 16 is in the mud tank, the mud in the tank is constantly tumbling with the agitator, causing the float 16 to swing up and down and left and right. Relying solely on the up and down extension of the support riser 7 may cause the riser to deform or get stuck. The pulley 5 effectively solves the problem of deformation or getting stuck of the support riser 7 and the scale 10.

[0043] Preferably, scale 10 is a flat square tube with a rectangular structure of stainless steel, which not only increases the scale size for clearer observation, but also provides support and alignment.

[0044] See Figure 1 As shown:

[0045] The limit transmission mechanism 300 includes an upper limit stop 3, a lower limit stop 6, a trigger rod 8, an upper spring 17, and a lower spring 18;

[0046] The middle part of the trigger rod 8 passes through the guide plate 4. The upper limit card 3 and the lower limit card 6 are fixedly installed on the trigger rod 8 at intervals and distributed on the upper and lower sides of the guide plate 4. The top of the trigger rod 8 passes through the lower support sleeve of the lower end face of the alarm box 100 and enters the box 1, and passes through the upper support sleeve of the upper end face of the box 1. A micro switch 22 with a fork is fixedly installed on the trigger rod 8 between the upper support sleeve and the lower support sleeve. The upper spring 17 and the lower spring 18 for resetting the micro switch 22 are respectively sleeved on the upper and lower parts of the trigger rod 8.

[0047] See Figure 2 As shown:

[0048] The alarm box 100 includes a box body 1, an air horn 19 installed in the box body 1, a three-way connector 20, an air control valve 21, a micro switch 22, and an air pipeline 23;

[0049] An air horn 19 is installed on one side of the interior of the housing 1, and an air control valve 21 and a micro switch 22 connected to the air control valve 21 are fixed on the other side. See [link / reference] Figure 4 As shown, the micro switch 22 is fixedly connected to the trigger rod 8 via a fork. The trigger rod 8 is fitted with an upper spring 17 and a lower spring 18 on both sides of the fork for resetting. The side end of the micro switch 22 is connected to the pneumatic control valve 21. The pneumatic control valve 21 is manufactured by Shenchi Pneumatic Co., Ltd. in the prior art, with the model number 4H230E-08. During operation, the trigger rod 8 drives the fork to move, and the micro switch 22 pushes the pneumatic control valve 21 to switch the switch state.

[0050] A three-way connector 20 is installed on the air intake pipe of the air horn 19. Two air intake branches are formed through the three-way connector 20 and are respectively connected to the two output ends of the air control valve 21. The air intake end air pipe 23 of the air control valve 21 is connected to the air pipe 2 in the support riser 7. The end of the air pipe 2 is connected to the air intake connector 12 fixed on the base 14. Preferably, the air pipe 2 is a φ8 copper pipe. The air circuit of the alarm device is changed to a copper pipe, which is corrosion-resistant, oxidation-resistant, and not easy to bend or deform, so as not to cause the air circuit to be blocked and affect the alarm volume.

[0051] Preferably, the pneumatic control valve 21 is in the closed state when not in operation, and the air source is continuously supplied from the air inlet connector 12;

[0052] In the above technical solution, the working principle of the mud level alarm device provided by this utility model is as follows:

[0053] Mud level rise:

[0054] As the mud level gradually rises, the float 16 floats upwards. Since the float 16 is connected to the float rod 9, the rise of the float 16 will drive the float rod 9 to move upwards. Since the upper end of the float rod 9 is fixedly connected to the guide plate 4, it will drive the guide plate 4 to move upwards. When the mud level rises to the set upper limit position (manually set by the upper limit card 3), the trigger rod 8 is triggered to move upwards, triggering the micro switch 22 in the housing 1. The micro switch 22 is connected to the pneumatic control valve 21. The pneumatic control valve 21 is a switch with a small contact interval and a fast mechanism in the prior art. The pneumatic control valve 21 changes its own opening and closing state by being pushed by the micro switch 22, thereby controlling the closure or opening of the air circuit. Once the micro switch 22 is triggered, the air horn 19 connected to the pneumatic control valve 21 will be turned on, and the alarm device (such as a buzzer) will start working to remind the workers that the mud level has reached the upper limit.

[0055] Mud level drop:

[0056] Similarly, when the mud level drops, the float 16 will move downwards as the level decreases, causing the float connecting rod 9 to move downwards, which in turn causes the guide plate 4 to move downwards. When the mud level drops to the set lower limit position (manually set by the lower limit card 7), the trigger rod 8 is triggered to move downwards, triggering the micro switch 22 in the alarm box to trigger the pneumatic control valve 21 again, causing it to change its switching state. The alarm air circuit is then connected to the air horn 19 again, and the alarm device (such as a buzzer sound) starts working, reminding the workers that the mud level has reached the lower limit.

[0057] In the above technical solution, the mud level alarm device provided by this utility model has the following advantages:

[0058] The alarm device has an alarm box 100 installed on top of the liquid level control mechanism. The alarm box 100 can effectively protect the pneumatic control valve 21, air horn 19, upper and lower springs, and air pipeline components inside the box through the box body 1. It is weatherproof, corrosion-resistant, impact-resistant during transportation, and extends the service life of the equipment. In addition, a label is affixed to the outside of the box body 1, indicating the product name, specifications, manufacturing date, manufacturing number, and production unit. Workshop personnel are responsible for recording the corresponding well team number to achieve traceability management. No matter what the situation, it is clear which batch of alarms was issued to which team.

[0059] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A mud level alarm device, characterized in that, include: Liquid level control mechanism and alarm box (100) installed on top of the liquid level control mechanism; The liquid level control mechanism includes a liquid level indicating mechanism (200) and a limiting transmission mechanism (300); The liquid level indicator (200) has a float (16) and a float rod (9) floatingly connected to its base (14), and a guide plate (4) is fixedly connected to the top of the float rod (9); The limiting transmission mechanism (300) includes an actuating rod (8) that penetrates the guide plate (4), and the actuating rod (8) is fixedly connected to limiting clips on both sides of the guide plate (4); it also includes A reset spring is installed inside the housing (1) of the alarm box (100) to drive the trigger rod (8) to reset; The housing (1) is equipped with an air horn (19), an air control valve (21) connected to the air circuit of the air horn (19), and a micro switch (22) linked to the air control valve (21) and the trigger rod (8).

2. The mud level alarm device according to claim 1, characterized in that: The upper part of the base (14) is fixedly connected to a support riser (7) and a scale (10) that pass through the guide plate (4). The top ends of the support riser (7) and the scale (10) are fixedly connected to the box body (1). The air inlet line of the air control valve (21) is installed inside the support riser (7) and its end is connected to the air inlet connector (12) installed on the base (14).

3. The mud level alarm device according to claim 2, characterized in that: The guide plate (4) is connected to a pulley (5) in the through hole of the support riser (7) and the scale (10), and the pulley (5) makes rolling contact with the support riser (7) and the scale (10).

4. The mud level alarm device according to claim 2, characterized in that: The scale (10) is a flat square tube with a rectangular structure made of stainless steel.

5. A mud level alarm device according to claim 2, characterized in that: The pneumatic control valve (21) is closed when not in operation, and the air source continuously supplies air from the air inlet connector (12).

6. A mud level alarm device according to claim 1 or 5, characterized in that: Both the inlet and outlet air lines of the pneumatic control valve (21) are copper lines.

7. The mud level alarm device according to claim 1, characterized in that: The float (16) is detachably fixed to the bottom end of the float support (9) by means of anti-detachment bolts.

8. A mud level alarm device according to claim 1 or 7, characterized in that: The float (16) is made of resin.

9. A mud level alarm device according to claim 1, characterized in that: The base (14) is a box structure that can be covered outside the float (16).

10. A mud level alarm device according to claim 1, characterized in that: The bottom and top of the box (1) are both fixed to the straightening sleeve at the through hole position of the trigger rod (8).

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