CN218882210U - Piston type testing device - Google Patents

Abstract

The utility model discloses a piston type testing device, which comprises an outer pipe inserted into a drilled hole, wherein a movable conveying joint is arranged in the inner cavity of the outer pipe, and a logging probe is arranged on the conveying joint; the conveying joint is hermetically connected with the inner wall of the outer pipe and divides the inner cavity of the outer pipe into a pressure cavity and a non-pressure cavity; the pressure cavity is connected with a pressurizing pipe, fluid is injected into the pressure cavity through the pressurizing pipe, the pressure of the pressure cavity is increased, the conveying joint is pushed to move to one side of the non-pressure cavity, and the conveying joint and the logging probe move along the outer pipe. The piston type testing device of the utility model can make the logging probe advance in a horizontal or even slightly inclined drilling hole in a piston type driving mode, so that the logging probe is convenient to push; by controlling the injection speed of the fluid, the well logging probe is ensured to be uniform in pushing speed, and the detection data is stable.

Description

Piston type testing device

Technical Field

The utility model belongs to the detection field especially relates to piston testing arrangement.

Background

Detection of drilling track, natural gamma, electromagnetic wave drilling radar, drilling transient electromagnetism and the like can be carried out in horizontal drilling.

The drilling track is mainly a track for measuring horizontal drilling; the natural gamma ray is used for measuring the natural radioactivity intensity of the gamma ray of the stratum, can be used for evaluating the damage degree of the radioactivity of the rock mass to the human body in engineering investigation, and can be used for dividing a stratum section to determine a stratum interface.

The electromagnetic wave drilling radar is characterized in that a receiving antenna and a transmitting antenna with the functions of receiving and transmitting high-frequency electromagnetic waves are placed in a drill hole, the transmitting antenna transmits the high-frequency electromagnetic waves to the periphery of the drill hole according to the propagation characteristics of the electromagnetic waves in a lossy medium, the high-frequency electromagnetic waves are reflected when the high-frequency electromagnetic waves encounter an inhomogeneous body (interface), and after the receiving antenna receives the reflected electromagnetic waves, a radar host machine processes and image-interprets reflected signals so as to identify different geologic bodies and detect fault fracture zones, karst and other bad geologic bodies within 30 meters of the periphery of the drill hole.

The transient electromagnetism of the drill hole is that a transient electromagnetism detection probe is arranged in the drill hole, the apparent resistivity of the stratum within the range of 30 meters around the drill hole is detected and detected, the apparent resistivity maps with different depths of the drill hole are generated, and the abnormal region of the apparent resistivity of the stratum is analyzed and judged according to the apparent resistivity maps, so that the unfavorable geologic bodies such as the karst cave, the fault, the broken zone and the like are judged.

When horizontal drilling is adopted in tunnel engineering investigation by the in-situ testing methods, poor geologic bodies around the tunnel can be well reflected, and the in-situ testing methods have important significance for tunnel engineering design and construction.

However, when the testing devices are used for measuring in a horizontal drilling hole, the problems of difficult pushing, easy blockage, uneven pushing speed and the like exist, and the measurement is difficult to carry out.

SUMMERY OF THE UTILITY MODEL

The utility model provides a piston testing arrangement to solve the propelling movement difficulty mentioned in the background art, promote the inhomogeneous technical problem of speed.

In order to achieve the above object, the utility model discloses a piston testing arrangement's concrete technical scheme as follows:

a piston type testing device comprises an outer pipe inserted into a drilled hole, wherein a movable conveying joint is arranged in an inner cavity of the outer pipe, and a logging probe is mounted on the conveying joint; the conveying joint is hermetically connected with the inner wall of the outer pipe and divides the inner cavity of the outer pipe into a pressure cavity and a non-pressure cavity; the pressure cavity is connected with a pressurizing pipe, fluid is injected into the pressure cavity through the pressurizing pipe, the pressure of the pressure cavity is increased, the conveying joint is pushed to move to one side of the non-pressure cavity, and the conveying joint and the logging probe move along the outer pipe.

Furthermore, an annular piston is sleeved outside the conveying connector and clamped between the conveying connector and the inner wall of the outer pipe so as to seal a gap between the conveying connector and the outer pipe.

Further, at least two pistons are arranged side by side.

Furthermore, a check ring is arranged between two adjacent pistons, the check ring is sleeved outside the conveying joint, and two end faces of the check ring are respectively abutted to the pistons on two sides.

Furthermore, the conveying joint is provided with an installation part, and the two pistons are sleeved on the installation part; the fixing parts are fixedly connected to two ends of the mounting part, and the piston is clamped on the mounting part by the fixing parts on two sides.

Furthermore, the logging probe is connected with a cable, a water faucet is arranged at one end, away from the non-pressure cavity, of the pressure cavity, the water faucet is provided with a sealing portion through which the cable penetrates, and the sealing portion seals a gap between the cable and the inner wall of the water faucet.

Furthermore, a fixed plate and a movable plate which are oppositely arranged are arranged in the water tap; the fixed plate is fixedly connected with the water faucet, and a first through hole for the cable to penetrate through is formed in the fixed plate; the movable plate is connected with the faucet in a sliding manner, and a second through hole for the cable to penetrate through is formed in the movable plate; a sealing ring is clamped between the fixed plate and the movable plate, and the sealing ring is provided with a third through hole for the cable to penetrate through; the movable plate moves and presses the sealing ring, so that the sealing ring deforms and seals a gap between the cable and the faucet.

Furthermore, a sealing cover is arranged at one end, far away from the outer pipe, of the faucet, a through hole is formed in the sealing cover, a pressure head is connected to the through hole in a threaded mode, and the pressure head penetrates through the sealing cover and abuts against the movable plate.

Further, the cable is wound on the cable reel, and the cable reel rotates reversely to pull out the logging probe outwards.

Furthermore, the pressure pipe is connected with a pressure relief pipe for pressure division, and the pressure relief pipe is connected with a pressure regulating valve in series, and the pressure regulating valve controls the pressure discharged by the pressure relief pipe.

The utility model discloses a piston testing arrangement has following advantage:

1. by the piston type driving mode, the logging probe can advance in a horizontal or even slightly inclined drilling hole, so that the logging probe is convenient to push; by controlling the injection speed of the fluid, the well logging probe is ensured to be uniform in pushing speed, and the detection data is stable;

2. the sealing part is used for sealing the gap at the extending part of the cable from the outer pipe, so that the sealing property of the pressure cavity is ensured, and the water leakage of the pressure cavity is prevented;

3. the excess pressure is discharged through the pressure regulating valve, the pressure in the pressure cavity is controlled, the excessive water pressure is prevented, and the cable is prevented from being broken when the logging probe is recovered.

Drawings

Fig. 1 is a schematic structural view of a piston type testing device of the present invention;

fig. 2 is a schematic view of a conveying joint structure of the present invention;

fig. 3 is a schematic structural view of the faucet of the present invention;

fig. 4 is a schematic structural diagram of the pressure regulating device of the present invention.

The notation in the figure is:

1. an outer tube; 11. a pressure chamber; 12. no pressure cavity is formed; 2. a faucet; 21. a fixing plate; 22. a movable plate; 23. a seal ring; 24. sealing the cover; 241. a pressure head; 25. a water injection port; 3. a delivery sub; 31. an installation part; 32. a piston; 33. a retainer ring; 34. locking the nut; 4. a logging probe; 41. a cable; 5. a pressurizing pipe; 51. a pressure gauge; 6. a pressure relief pipe; 61. a pressure regulating valve; 7. a cable reel; 8. a depth counting wheel; 81. an auxiliary wheel; 9. and (7) drilling.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Those skilled in the art will appreciate that although some embodiments herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

As shown in figure 1, the utility model discloses a piston testing arrangement, including the outer tube 1 that inserts drilling 9, the cover is equipped with mobilizable delivery connection 3 in the outer tube 1 inner chamber, installs logging probe 4 on the delivery connection 3. The logging probes 4 can adopt logging probes 4 such as inclination measurement, natural gamma, electromagnetic wave drilling radar, drilling transient electromagnetic and the like according to different testing experiments. So that the logging probe 4 gradually detects various parameters of the rock mass in the borehole 9 as the delivery sub 3 slides along the outer pipe 1.

In order to drive the conveying connector 3 for installing the logging probe 4 to move, the conveying connector 3 is connected with the inner wall of the outer pipe 1 in a sealing mode, so that the conveying connector 3 divides the inner cavity of the outer pipe 1 into a pressure cavity 11 and a non-pressure cavity 12, and the pressure cavity 11 and the non-pressure cavity 12 are respectively positioned on two sides of the conveying connector 3. Because the conveying connector 3 is connected with the inner wall of the outer tube 1 in a sealing way, the pressure cavity 11 is expanded, the conveying connector 3 moves to one side of the non-pressure cavity 12, and the non-pressure cavity 12 is reduced; conversely, when the pressureless chamber 12 is expanded, the transfer connector 3 moves toward the pressure chamber 11, and the pressure chamber 11 is contracted.

By utilizing the characteristics, the pressure cavity 11 is connected with the pressurizing pipe 5, fluid such as water is injected into the pressure cavity 11 through the pressurizing pipe 5, the pressure of the pressure cavity 11 is increased, the conveying connector 3 is pushed to move towards the side of the non-pressure cavity 12, the conveying connector 3 moves along the outer pipe 1, and the logging probe 4 detects the rock.

As shown in fig. 2, in order to connect the delivery sub 3 and the inner wall of the outer tube 1 in a sealing manner, the delivery sub 3 is sleeved with an annular piston 32, and the piston 32 is clamped between the delivery sub 3 and the inner wall of the outer tube 1 to seal a gap between the delivery sub 3 and the outer tube 1. And at least two pistons 32 are arranged side by side to ensure that the pressure chamber 11 and the pressureless chamber 12 are independent of each other.

Specifically, the conveying joint 3 is provided with a mounting portion 31, and two pistons 32 are sleeved on the mounting portion 31. A retainer ring 33 is arranged between two adjacent pistons 32, the retainer ring 33 is sleeved outside the mounting part 31, and two end faces of the retainer ring 33 are respectively abutted with the pistons 32 on two sides so as to separate the adjacent pistons 32 and keep the distance between the two adjacent retainer rings 33. And the outer diameter of the retainer ring 33 is smaller than that of the piston 32, so that the distance between the retainer ring 33 and the inner wall of the outer pipe 1 is kept, and the sliding of the conveying connector 3 along the outer pipe 1 is not influenced.

In order to fix the piston 32, fixing members are fixed to both ends of the mounting portion 31, and the fixing members on both sides clamp the piston 32 to the mounting portion 31. Typically, the fastener is a lock nut 34, and the lock nut 34 is screwed onto the mounting portion 31 to clamp and fix the piston 32. In addition to the lock nut 34, a detachable connection manner such as interference connection may be adopted.

To power the logging probe 4 and transmit data of the logging probe 4, a cable 41 is connected to the logging probe 4. Thus, the logging probe 4 is mounted at the end of the delivery sub 3 located in the pressureless cavity 12. The delivery sub 3 is hollow, and the cable 41 extends through the delivery sub 3 and out of the outer tube 1 to be connected with external equipment.

Referring to fig. 3, in order to make the cable 41 penetrate out of the outer tube 1 and ensure the sealing of the pressure chamber 11, the end of the pressure chamber 11 far from the non-pressure chamber 12 is provided with the faucet 2, the cable 41 of the faucet 2 penetrates through the pressure chamber and is provided with a sealing part, and the sealing part seals a gap between the cable 41 and the faucet 2 to prevent the faucet 2 from leaking water.

Specifically, one end of the water tap 2 is screwed on the outer pipe 1 to fixedly connect the water tap 2. The faucet 2 is provided with a fixed plate 21 and a movable plate 22 which are oppositely arranged. Wherein, fixed plate 21 and 2 fixed connection of tap, fixed plate 21 can with 2 inner wall threaded connection of tap, weld in order to fix, can also set up the boss on 2 inner walls of tap, put the fixed plate 21 in the frame on the boss. The movable plate 22 is slidably connected to the faucet 2, and the movable plate 22 is usually sleeved in the faucet 2. The fixed plate 21 has a first through hole for the cable 41 to pass through, and the movable plate 22 has a second through hole for the cable 41 to pass through. A seal ring 23 is clamped between the fixed plate 21 and the movable plate 22, and the seal ring 23 is provided with a third through hole for the cable 41 to pass through. The movable plate 22 moves and presses the packing 23, and the packing 23 is deformed and seals the gap between the cable 41 and the faucet 2.

In order to drive the movable plate 22 to move, a sealing cover 24 is disposed at an end of the faucet 2 away from the outer tube 1, and the sealing cover 24 is fixed on the faucet 2. The cover 24 has a through hole, a pressing head 241 is connected to the through hole via a thread, and the pressing head 241 penetrates through the cover 24 and abuts against the movable plate 22. So that the movable plate 22 is gradually pressed as the pressure head 241 rotates, and the sealing ring 23 is pressed by the movable plate 22, so that the sealing ring 23 is deformed to seal the gap. In addition, a handle may be provided on the pressure head 241 to facilitate rotation of the pressure head 241. Also, the indenter 241 may be provided with a central position, and the corresponding indenter 241 is hollow for the cable 41 to pass through.

The faucet 2 is further connected with a water filling port 25, and the water filling port 25 is connected with the pressurizing pipe 5 so as to fill the pressure chamber 11 with fluid.

As shown in fig. 4, in order to adjust the pressure of the pressure chamber 11, the pressure pipe 5 is further connected to a pressure relief pipe 6 for partial pressure, a pressure regulating valve 61 is connected in series to the pressure relief pipe 6, and the pressure regulating valve 61 controls the pressure discharged from the pressure relief pipe 6, thereby controlling the pressure entering the pressure chamber 11. The pressure pipe 5 is also provided with a pressure gauge 51 for controlling the opening and closing of the pressure regulating valve 61.

Further, the cable 41 is an armored cable. The cable 41 is wound on a cable reel 7 of a winch of the cable 41 to go deep along with the logging probe 4 to supply materials for the cable 41; and the cable drum 7 is rotated in the reverse direction to pull the logging probe 4 outwards. A depth counting wheel 8 is arranged on the cable 41, and two rotatable auxiliary wheels 81 are arranged on two sides of the depth counting wheel 8. The cable 41 is wound around the depth counting wheel 8 and the auxiliary wheel 81. As the cable 41 feeds, the depth counting wheel 8 rotates to calculate the depth of the electrode bit into the borehole 9.

The working process is as follows:

1. cleaning the drill hole 9: after drilling, washing the drilled hole 9 with slurry or clear water, and washing away residual rock powder, rock debris and the like;

2. lower outer tube 1: after the rock powder is washed clean, the outer pipe 1 is put into the drill hole 9 in a drilling mode;

3. the installation of a measuring mechanism:

1) The cable 41 winch is fixed on the mast of the drilling machine, and the cable 41 connected with the conveying connector 3 bypasses the depth counting wheel 8, passes through the water faucet 2 and then is connected with the logging probe 4;

2) The conveying joint 3 and the logging probe 4 are conveyed into the outer pipe 1 together;

3) Connecting a water tap 2 with an outer pipe 1;

4) Connecting a pressure relief pipe 6 of the pressure regulating device with the water faucet 2;

5) Connecting a slurry pump with a pressurizing pipe 5;

6) The measuring instrument host is connected with the depth counting wheel 8 and the cable 41, and is started to debug, the measuring parameters are set, and whether each part operates normally is checked.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims (10)

1. A piston type testing device is characterized by comprising an outer pipe inserted into a drilled hole, wherein a movable conveying joint is arranged in the inner cavity of the outer pipe, and a logging probe is arranged on the conveying joint; the conveying joint is hermetically connected with the inner wall of the outer pipe and divides the inner cavity of the outer pipe into a pressure cavity and a non-pressure cavity; the pressure cavity is connected with a pressurizing pipe, fluid is injected into the pressure cavity through the pressurizing pipe, the pressure of the pressure cavity is increased, the conveying joint is pushed to move to one side of the non-pressure cavity, and the conveying joint and the logging probe move along the outer pipe.

2. The piston testing device as claimed in claim 1, characterized in that the delivery nipple is externally provided with an annular piston, which is clamped between the delivery nipple and the inner wall of the outer tube for sealing the gap between the delivery nipple and the outer tube.

3. The piston testing device as defined in claim 2, characterized in that at least two pistons are arranged side by side.

4. The piston type testing device as claimed in claim 3, wherein a retainer ring is arranged between two adjacent pistons, the retainer ring is sleeved outside the conveying joint, and two end faces of the retainer ring are respectively abutted against the pistons on two sides.

5. A piston testing arrangement according to claim 3 or 4, characterised in that the transfer connection is provided with a mounting portion, on which the two pistons are arranged; the fixing parts are fixedly connected to two ends of the mounting part, and the piston is clamped on the mounting part by the fixing parts on two sides.

6. The piston type testing device as claimed in claim 1, wherein the logging probe is connected to a cable, a tap is provided at an end of the pressure chamber remote from the pressureless chamber, the tap power supply cable penetrates and is provided with a sealing portion, and the sealing portion seals a gap between the cable and an inner wall of the tap.

7. The piston testing device as claimed in claim 6, wherein a fixed plate and a movable plate are provided opposite to each other in the faucet; the fixed plate is fixedly connected with the water faucet, and a first through hole for the cable to penetrate through is formed in the fixed plate; the movable plate is connected with the faucet in a sliding manner, and the movable plate is provided with a second through hole for a cable to penetrate through; a sealing ring is clamped between the fixed plate and the movable plate, and the sealing ring is provided with a third through hole for a cable to penetrate through; the movable plate moves and presses the sealing ring to deform the sealing ring and seal a gap between the cable and the faucet.

8. The piston type test device as claimed in claim 7, wherein a closure is provided at an end of the water tap remote from the outer tube, the closure having a through hole, a ram being connected to the through hole by a thread, the ram penetrating the closure and abutting against the movable plate.

9. The piston testing device as defined in claim 6, wherein the cable is wound on a drum, the drum rotating in reverse to pull the logging probe outwardly.

10. The piston type testing device as claimed in claim 1 or 9, characterized in that the pressure pipe is connected with a pressure relief pipe for partial pressure, and the pressure relief pipe is connected with a pressure regulating valve in series, and the pressure regulating valve controls the pressure discharged by the pressure relief pipe.

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