Oil field slurry flow detector

Abstract

The oil field slurry flow detector comprises a flow detector body, the flow detector body comprises a measuring tube, a detection mechanism is installed on the inner wall of the top of the measuring tube, the two ends of the measuring tube are both fixedly connected with round installation boxes, the sides, away from each other, of the two round installation boxes are both provided with openings, and the openings are communicated with the measuring tube. Communicating holes communicated with the interior of the measuring tube are formed in the inner walls of the sides, close to each other, of the two circular mounting boxes, and elastic sealing rings are fixedly arranged in the circular mounting boxes in a sleeving manner. By arranging a series of structures, drilling mud pipes of different specifications can be clamped and fixed, sealing connection between the measuring pipe and the drilling mud pipes of different specifications is achieved through the elastic sealing ring arranged in a matched mode, the application range is widened, the use flexibility is improved, and the use requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of mud flow detectors, in particular to an oil field mud flow detector. Background Art

[0002] The change of the relative flow rate of mud in the mud tank at the outlet of oil drilling is an important measurement parameter in oil field drilling and logging operations, which is related to the smooth progress of oil well operations. In actual production, flow sensors are used for measurement. The existing flow sensors mostly use the resistance change method to measure the flow rate. This measurement method requires the connection of a power supply to the sensor, resulting in a complex sensor structure. For this purpose, application No.: 201220504443.0 discloses an oil field mud flow sensor, including a measuring tube, a measuring plate is rotatably installed at the top of the tube mouth at one end of the measuring tube, a piezoelectric sensor is arranged in the groove of the side wall of the top of the measuring tube, the piezoelectric sensor is sealed in the groove by a waterproof membrane, and an elastic rubber is connected between the plate wall and the waterproof membrane on the measuring plate; the measurement method of the device is direct and reliable, and no other electronic equipment needs to be connected externally, and the sensor structure is simple and practical;

[0003] The oilfield mud flow sensor disclosed in the above patent can be used to detect the oilfield mud flow by cooperating with a measuring plate, a piezoelectric sensor and an elastic rubber. However, the oilfield mud flow sensor disclosed in the above patent still has some shortcomings during use: the connection between the measuring tube and the external drilling pipe adopts a conventional flange, and the application scope of this connection method is limited. It can only be applied to drilling pipes of the same specification. Drilling pipes of different specifications require different flanges, and the flexibility of use is low and cannot meet the use requirements. Based on the above situation, we propose an oilfield mud flow detector. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an oilfield mud flow detector.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An oilfield mud flow detector comprises a flow detector body, the flow detector body comprises a measuring tube, a detection mechanism is installed on the top inner wall of the measuring tube, the detection mechanism and the measuring tube cooperate to detect the flow of oilfield mud, the detection principle is the prior art and is not elaborated here, both ends of the measuring tube are fixedly connected with circular mounting boxes, the sides of the two circular mounting boxes away from each other are set as openings, the inner walls of the sides of the two circular mounting boxes close to each other are provided with connecting holes connected to the inside of the measuring tube, an elastic sealing ring is fixedly sleeved in the circular mounting box, and a sealing connection effect is provided by the elastic sealing ring, an arc-shaped clamping plate is fixedly connected to the bottom inner wall of the circular mounting box, a mounting groove is provided on the top inner wall of the circular mounting box, the sides of the two mounting grooves away from each other are set as openings, and the inner walls of the mounting grooves are provided with connecting holes connected to the inside of the measuring tube. A pressure-controlled clamping mechanism is provided, which is used to clamp and fix the mud well pipe. The top of the pressure-controlled clamping mechanism is fixedly connected with a threaded driving guide mechanism, which is used to drive the pressure-controlled clamping mechanism. The top of the threaded driving guide mechanism extends to the top of the corresponding circular mounting box. The circular mounting box is mounted on the corresponding threaded driving guide mechanism. A control reminder mechanism is embedded and fixed on the top of the circular mounting box. A first pressure sensor is embedded and fixed on the inner wall of one side of the two circular mounting boxes close to each other. The detection end of the first pressure sensor is in active contact with the corresponding elastic sealing ring. The first pressure sensor is used to detect the extrusion pressure of the elastic sealing ring. The detection principle is the existing technology and is not elaborated here. The first pressure sensor and the pressure-controlled clamping mechanism are both electrically connected to the corresponding control reminder mechanism.

[0007] Preferably, the detection mechanism includes a piezoelectric sensor sealed and embedded in the top inner wall of the measuring tube, a measuring plate is rotatably mounted on the top inner wall of the measuring tube, an elastic rubber block is fixedly connected between the top of the measuring plate and the bottom of the piezoelectric sensor, and the piezoelectric sensor, the measuring plate and the elastic rubber block cooperate to detect the flow rate of the mud. The detection principle is the existing technology and will not be elaborated here.

[0008] Preferably, the pressure-controlled clamping mechanism includes a first clamping plate arranged in an installation groove, an extrusion plate is provided above the first clamping plate, a second pressure sensor is fixedly connected to the bottom of the extrusion plate, the bottom of the second pressure sensor is fixedly connected to the corresponding top of the first clamping plate, and the second pressure sensor is used to detect the extrusion force of the first clamping plate.

[0009] Preferably, the threaded drive guide mechanism includes a rectilinear rod, the bottom of the rectilinear rod is fixedly connected to the top of the corresponding extrusion plate, a rectangular through-hole is opened on the top inner wall of the mounting groove, the rectilinear rod is slidably sleeved in the corresponding rectangular through-hole, a rectangular block slidably sleeved in the corresponding rectilinear rod is fixedly connected between the inner walls on both sides of the rectangular through-hole, a screw is rotatably installed between the top inner wall and the bottom inner wall of the rectilinear rod, the rectangular block is threadedly sleeved on the corresponding screw, and the rectangular block is threadedly connected to the screw in such a way that the screw can move vertically while rotating, the top of the screw extends to above the corresponding rectilinear rod and is fixedly connected to a knob, the top of the extrusion plate is fixedly connected to an L-shaped guide rod, the top of the L-shaped guide rod extends to above the corresponding circular mounting box, the circular mounting box is slidably sleeved on the corresponding L-shaped guide rod, and the L-shaped guide rod has a vertical guiding effect on the extrusion plate.

[0010] Preferably, the control reminder mechanism includes a controller embedded and fixed on the top of the circular mounting box, and an audible and visual alarm is fixedly connected to the top of the controller. The audible and visual alarm, the first pressure sensor and the second pressure sensor are all electrically connected to the controller. The controller receives signals from the first pressure sensor and the second pressure sensor to control the audible and visual alarm. The control principle is the existing technology and will not be elaborated here.

[0011] Preferably, a first anti-slip rubber is bonded and fixed to the top of the arc-shaped clamping plate, and the bottom of the first clamping plate is a concave arc-shaped structure and is bonded and fixed to a second anti-slip rubber. The setting of the first anti-slip rubber and the second anti-slip rubber can effectively reduce slipping during the clamping and fixing process.

[0012] Preferably, a groove is opened on the top inner wall of the measuring tube, the outer side of the piezoelectric sensor is bonded and covered with a sealing rubber sleeve, the outer side of the sealing rubber sleeve is bonded and fixed to the inner wall of the groove, the bottom inner wall of the sealing rubber sleeve is in active contact with the monitoring end of the bottom of the piezoelectric sensor, the sealing connection between the groove and the piezoelectric sensor is achieved through the sealing rubber sleeve, and the bottom of the sealing rubber sleeve is bonded and fixed to the top of the elastic rubber block.

[0013] Compared with the existing technology, the beneficial effects of the utility model are:

[0014] 1. The first clamping plate can be driven to move vertically to clamp the drilling mud pipe by the cooperation of the circular installation box, the arc clamping plate, the pressure-controlled clamping mechanism, the threaded drive guide mechanism and the control reminder mechanism. The pressure-controlled clamping method can effectively reduce the deformation of the drilling mud pipe due to the large clamping force, improve the clamping and fixing stability, and cooperate with the setting of the elastic sealing ring to achieve the sealing connection between the drilling mud pipe and the measuring pipe. In addition, the vertical position of the first clamping plate can be adjusted, which can be used to clamp and fix drilling mud pipes of different specifications, thereby improving the scope of application and flexibility of use.

[0015] 2. The flow rate of mud can be detected by cooperating with the measuring tube and the detection mechanism;

[0016] The utility model can clamp and fix drilling mud pipes of different specifications through the arrangement of a series of structures, and cooperate with the arranged elastic sealing ring to realize the sealed connection between the measuring pipe and the drilling mud of different specifications, thereby improving the scope of application and the flexibility of use and meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of an oilfield mud flow detector proposed by the utility model;

[0018] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0020] In the figure: 100, measuring tube; 101, measuring plate; 102, piezoelectric sensor; 103, elastic rubber block; 1, circular mounting box; 2, connecting hole; 3, elastic sealing ring; 4, first pressure sensor; 5, arc-shaped clamping plate; 6, mounting groove; 7, first clamping plate; 8, penetrating rod; 9, rectangular perforation; 10, rectangular block; 11, L-shaped guide rod; 12, extrusion plate; 13, second pressure sensor; 14, controller; 15, sound and light alarm; 16, screw. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-3An oilfield mud flow detector comprises a flow detector body, the flow detector body comprises a measuring tube 100, a detection mechanism is installed on the top inner wall of the measuring tube 100, the detection mechanism comprises a piezoelectric sensor 102 which is sealed and embedded and fixed on the top inner wall of the measuring tube 100, wherein a groove is provided on the top inner wall of the measuring tube 100, the outer side of the piezoelectric sensor 102 is bonded and coated with a sealing rubber sleeve, the outer side of the sealing rubber sleeve is bonded and fixed to the inner wall of the groove, the bottom inner wall of the sealing rubber sleeve is in active contact with the monitoring end of the bottom of the piezoelectric sensor 102, and a sealing connection between the groove and the piezoelectric sensor 102 is achieved through the sealing rubber sleeve, and the measuring tube 100 is sealed and connected with the piezoelectric sensor 102. A measuring plate 101 is rotatably mounted on the top inner wall of the measuring tube 100, wherein a roller is rotatably embedded on the top inner wall of the measuring tube 100, and the bottom of the roller is fixedly connected to the top right side of the measuring plate 101. The inner wall of the measuring tube 100 is a rectangular structure, and the front and rear sides of the measuring plate 101 are in active contact with the front inner wall and the rear inner wall of the measuring tube 100 respectively. An elastic rubber block 103 is fixedly connected between the top of the measuring plate 101 and the bottom of the sealing rubber sleeve, and the piezoelectric sensor 102, the measuring plate 101 and the elastic rubber block 103 are matched to detect the flow rate of the mud. The detection principle is the existing technology and will not be elaborated here.

[0023] Both ends of the measuring tube 100 are fixedly connected with circular mounting boxes 1, and the sides of the two circular mounting boxes 1 that are far away from each other are set as openings. The inner walls of the two circular mounting boxes 1 that are close to each other are provided with connecting holes 2 that are connected with the inside of the measuring tube 100. An elastic sealing ring 3 is fixedly sleeved inside the circular mounting box 1, and a sealing connection effect is provided by the elastic sealing ring 3. An arc-shaped clamping plate 5 is fixedly connected to the bottom inner wall of the circular mounting box 1, wherein the top of the arc-shaped clamping plate 5 is bonded and fixed with a first anti-slip rubber. A mounting groove 6 is provided on the top inner wall of the circular mounting box 1, and the two mounting grooves 6 are both on the side away from each other. It is set as an opening, and a pressure-controlled clamping mechanism is provided in the mounting groove 6. The pressure-controlled clamping mechanism includes a first clamping plate 7 arranged in the mounting groove 6, wherein the bottom of the first clamping plate 7 is a concave arc structure and is bonded and fixed with a second anti-slip rubber. The setting of the first anti-slip rubber and the second anti-slip rubber can effectively reduce the slipping during the clamping and fixing process. An extrusion plate 12 is provided above the first clamping plate 7, and a second pressure sensor 13 is fixedly connected to the bottom of the extrusion plate 12. The bottom of the second pressure sensor 13 is fixedly connected to the top of the corresponding first clamping plate 7, and the second pressure sensor 13 is used to detect the extrusion force of the first clamping plate 7;

[0024] A threaded drive guide mechanism is fixedly connected to the top of the extrusion plate 12, and the top of the threaded drive guide mechanism extends to the top of the corresponding circular installation box 1. The circular installation box 1 is sleeved on the corresponding threaded drive guide mechanism. The threaded drive guide mechanism includes a reciprocating rod 8, and the bottom of the reciprocating rod 8 is fixedly connected to the top of the corresponding extrusion plate 12. A rectangular through hole 9 is opened on the top inner wall of the installation groove 6. The reciprocating rod 8 is slidably sleeved in the corresponding rectangular through hole 9. A rectangular block 10 slidably sleeved in the corresponding reciprocating rod 8 is fixedly connected between the inner walls on both sides of the rectangular through hole 9, wherein the front and rear sides of the rectangular block 10 are in sliding contact with the front and rear inner walls of the reciprocating rod 8 respectively, and a screw 16 is rotatably installed between the top inner wall and the bottom inner wall of the reciprocating rod 8, wherein a rotating groove is opened on the bottom inner wall of the reciprocating rod 8, and a circular hole is opened on the top inner wall of the reciprocating rod 8, and bearings are fixedly sleeved in the circular hole and the rotating groove. The inner side of the inner ring of the bearing is fixedly connected to the outer side of the corresponding screw 16, and the bearing serves to provide the corresponding screw 16 for rotatable installation. The rectangular block 10 is threadedly sleeved on the corresponding screw 16, wherein the top of the rectangular block 10 is provided with a threaded hole threadedly connected to the corresponding screw 16. The rectangular block 10 and the screw 16 are threadedly connected through the corresponding threaded hole, and the screw 16 can move vertically while rotating. The top of the screw 16 extends to the top of the corresponding round rod 8 and is fixedly connected with a knob. The top of the extrusion plate 12 is fixedly connected with an L-shaped guide rod 11, and the top of the L-shaped guide rod 11 extends to the top of the corresponding circular installation box 1. The circular installation box 1 is slidably sleeved on the corresponding L-shaped guide rod 11, wherein a guide hole is provided on the top inner wall of the installation groove 6, and the inner wall of the guide hole is in active contact with the outer side of the corresponding L-shaped guide rod 11, and the L-shaped guide rod 11 serves to vertically guide the extrusion plate 12.

[0025] A control reminder mechanism is embedded and fixed on the top of the circular installation box 1, and the control reminder mechanism includes a controller 14 embedded and fixed on the top of the circular installation box 1, and a sound and light alarm 15 is fixedly connected to the top of the controller 14. A first pressure sensor 4 is embedded and fixed on the inner wall of the side where the two circular installation boxes 1 are close to each other. The detection end of the first pressure sensor 4 is in active contact with the corresponding elastic sealing ring 3. The first pressure sensor 4 is used to detect the extrusion force of the elastic sealing ring 3. Its detection principle is the existing technology and is not elaborated here. The sound and light alarm 15, the first pressure sensor 4 and the second pressure sensor 13 are all electrically connected to the controller 14. The controller 14 receives signals from the first pressure sensor 4 and the second pressure sensor 13 to control the sound and light alarm 15. Its control principle is the existing technology and is not elaborated here. The utility model can clamp and fix drilling mud pipes of different specifications through a series of structural settings, and cooperate with the set elastic sealing ring 3 to achieve a sealed connection between the measuring tube 100 and drilling mud of different specifications, thereby improving the scope of application and flexibility of use and meeting the use requirements.

[0026] Working principle: When in use, the two ends of the measuring tube 100 are respectively connected to the external drilling mud pipe, and when connected, the drilling mud pipe is sleeved in the corresponding circular installation box 1, and the bottom of the drilling mud pipe is in active contact with the first anti-slip rubber on the top of the corresponding arc-shaped clamping plate 5, and is pushed in the direction close to the measuring tube 100. When the drilling mud pipe moves to its end and contacts the corresponding elastic sealing ring 3, the drilling mud pipe that continues to move squeezes the corresponding elastic sealing ring 3, and the elastic sealing ring 3 squeezes the corresponding first pressure sensor 4, and the first pressure sensor 4 senses the squeezing force. The detected squeezing force is detected and transmitted to the controller 14. When the squeezing force reaches the preset value, the controller 14 controls the corresponding sound and light alarm 15 to send out a sound and light alarm to remind the personnel. At this time, the movement of the drilling mud pipe can be stopped. Then, the knob is turned to drive the corresponding screw rod 16 to rotate. Under the action of the threaded hole on the rectangular block 10, the screw rod 16 rotates and moves downward. The screw 16 drives the corresponding reciprocating rod 8 to move downward, and the reciprocating rod 8 drives the corresponding squeezing plate 12 to move downward. The squeezing plate 12 drives the corresponding L-shaped guide rod 11 to move downward, and the squeezing plate 12 passes through the corresponding second The pressure sensor 13 drives the first clamping plate 7 to move downward, and the first clamping plate 7 drives the corresponding second anti-skid rubber to move downward until it contacts the top of the drilling mud pipe, limiting the first clamping plate 7 from continuing to move. At this time, the squeezing plate 12 that continues to move drives the corresponding second pressure sensor 13 to squeeze the first clamping plate 7. The second pressure sensor 13 detects the reaction force of the squeezing and transmits the detected pressure value to the corresponding controller 14. When it is detected that the squeezing force reaches the preset value, the controller 14 controls the sound and light alarm 15 to send out the sound and light alarm again to remind the personnel. At this time, it is proved that the drilling mud The pipe is clamped and fixed by controlled pressure, and the personnel can stop turning the knob. The second pressure sensor 13, the controller 14 and the sound and light alarm 15 cooperate to realize the controlled pressure and fixation of the drilling mud pipe. At the same time, the elastic sealing ring 3 is cooperated to realize the sealing connection between the drilling mud pipe and the measuring pipe 100. The controlled pressure and fixation method can effectively reduce the deformation of the drilling mud pipe due to the large clamping force, and improve the clamping and fixing stability. In addition, the vertical position of the first clamping plate 7 can be adjusted, which can be used to clamp and fix drilling mud pipes of different specifications, thereby improving the scope of application and flexibility of use.

[0027] When the mud inside the drilling mud pipe on the right side enters the measuring tube 100, the measuring plate 101 is squeezed upward, so that the measuring plate 101 rotates upward and squeezes and compresses the elastic rubber block 103 upward. The elastic rubber block 103 squeezes the piezoelectric sensor 102, and the piezoelectric sensor 102 detects the squeezing force. The flow rate of the mud is detected by detecting the squeezing force. The specific detection principle has been mentioned in the patent application number 201220504443.0 and will not be elaborated here.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oilfield mud flow detector, comprising a flow detector body, wherein the flow detector body comprises a measuring tube (100), characterized in that: A detection mechanism is installed on the top inner wall of the measuring tube (100), and circular installation boxes (1) are fixedly connected at both ends of the measuring tube (100), and the sides of the two circular installation boxes (1) that are away from each other are both set as openings, and the inner walls of the two circular installation boxes (1) that are close to each other are both provided with a connecting hole (2) that is connected to the inside of the measuring tube (100), and an elastic sealing ring (3) is fixedly sleeved inside the circular installation box (1), and an arc-shaped clamping plate (5) is fixedly connected to the bottom inner wall of the circular installation box (1), and a mounting groove (6) is opened on the top inner wall of the circular installation box (1), and the sides of the two mounting grooves (6) that are away from each other are both set as openings, and the mounting grooves (6) are fixedly connected to the bottom inner wall of the circular installation box (1). A pressure control clamping mechanism is provided in the mounting groove (6), the top of the pressure control clamping mechanism is fixedly connected to a threaded drive guide mechanism, the top of the threaded drive guide mechanism extends to the top of the corresponding circular mounting box (1), the circular mounting box (1) is sleeved on the corresponding threaded drive guide mechanism, the top of the circular mounting box (1) is embedded and fixed with a control reminder mechanism, the inner wall of the two circular mounting boxes (1) on one side close to each other is embedded and fixed with a first pressure sensor (4), the detection end of the first pressure sensor (4) is in active contact with the corresponding elastic sealing ring (3), and the first pressure sensor (4) and the pressure control clamping mechanism are both electrically connected to the corresponding control reminder mechanism.

2. An oilfield mud flow detector according to claim 1, characterized in that: The detection mechanism comprises a piezoelectric sensor (102) which is sealed and embedded and fixed on the top inner wall of a measuring tube (100); a measuring plate (101) is rotatably mounted on the top inner wall of the measuring tube (100); and an elastic rubber block (103) is fixedly connected between the top of the measuring plate (101) and the bottom of the piezoelectric sensor (102).

3. An oilfield mud flow detector according to claim 2, characterized in that: The pressure-controlled clamping mechanism comprises a first clamping plate (7) arranged in a mounting groove (6), an extrusion plate (12) is arranged above the first clamping plate (7), a second pressure sensor (13) is fixedly connected to the bottom of the extrusion plate (12), and the bottom of the second pressure sensor (13) is fixedly connected to the top of the corresponding first clamping plate (7).

4. An oilfield mud flow detector according to claim 3, characterized in that: The thread drive guide mechanism comprises a reciprocating rod (8), the bottom of which is fixedly connected to the top of a corresponding extrusion plate (12), a rectangular through hole (9) is provided on the top inner wall of the mounting groove (6), the reciprocating rod (8) is slidably sleeved in the corresponding rectangular through hole (9), a rectangular block (10) slidably sleeved in the corresponding reciprocating rod (8) is fixedly connected between the inner walls on both sides of the rectangular through hole (9), a screw rod (16) is rotatably installed between the top inner wall and the bottom inner wall of the reciprocating rod (8), the rectangular block (10) is threadedly sleeved on the corresponding screw rod (16), the top of the screw rod (16) extends to the top of the corresponding reciprocating rod (8) and is fixedly connected to a knob, and an L-shaped guide rod (11) is fixedly connected to the top of the extrusion plate (12), the top of the L-shaped guide rod (11) extends to the top of the corresponding circular mounting box (1), and the circular mounting box (1) is slidably sleeved on the corresponding L-shaped guide rod (11).

5. The oilfield mud flow detector according to claim 3, characterized in that: The control reminder mechanism comprises a controller (14) embedded and fixed on the top of the circular installation box (1); the top of the controller (14) is fixedly connected to an audible and visual alarm (15); the audible and visual alarm (15), the first pressure sensor (4) and the second pressure sensor (13) are all electrically connected to the controller (14).

6. The oilfield mud flow detector according to claim 3, characterized in that: The top of the arc-shaped clamping plate (5) is bonded and fixed with a first anti-skid rubber, and the bottom of the first clamping plate (7) is a concave arc-shaped structure and is bonded and fixed with a second anti-skid rubber.

7. The oilfield mud flow detector according to claim 2, characterized in that: A groove is provided on the inner wall at the top of the measuring tube (100); the outer side of the piezoelectric sensor (102) is bonded and covered with a sealing rubber sleeve; the outer side of the sealing rubber sleeve is bonded and fixed to the inner wall of the groove; the bottom inner wall of the sealing rubber sleeve is in active contact with the monitoring end at the bottom of the piezoelectric sensor (102); and the bottom of the sealing rubber sleeve is bonded and fixed to the top of the elastic rubber block (103).

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