CN206530301U - A kind of geologic drilling rod - Google Patents

Abstract

The utility model relates to a geological drilling rod, which comprises a plurality of rod bodies, each rod body is connected up and down sequentially, and the two connected rod bodies are respectively called an upper rod body and a lower rod body, and the lower end of the upper rod body and the upper end of the lower rod body They are connected by a male joint and a female joint. The outer circumference of the lower end of the upper rod matches the inner hole of the upper end of the male joint, the outer circumference of the lower end of the male joint matches the inner hole of the upper end of the female joint, and the lower end of the female joint. The inner hole is matched with the outer circumference of the lower rod body, and the matched outer circumference and the outer circumference of the inner hole and the inner hole respectively have the first stage and the second stage, the first stage has the first step surface, and the second stage has the second stage. Two steps. The first step surface contacts and seals with the end surface of the second stage, and the second step surface contacts and seals with the end surface of the first stage. These two seals increase the tightness between the matched outer periphery and the inner hole; The matching outer circumference and the inner hole are threaded to facilitate the disassembly of the male and female joints and the rod body.

Description

a geological drill pipe

technical field

The utility model belongs to the technical field of geological drilling, in particular to a geological drilling rod.

Background technique

Drilling is an important technical means in geological exploration work. Geological drilling refers to the use of certain drilling machinery and equipment to drill down from the surface of the earth to form boreholes in the stratum to identify and divide the stratum. Obtain cores and ore samples for research and analysis in order to measure the physical and chemical properties of rocks and soil layers. The drill pipe is an important part of drilling machinery and equipment, and the function of the drill pipe is to connect the drill bit and transmit power to the drill bit.

The Chinese patent with the authorized announcement number CN 202745720 U discloses a geological drill pipe. The geological drill pipe includes a drill pipe body with a water hole in the center of the drill pipe body. A female joint with internal threads is welded at the rear of the drill pipe body. Externally welded male connectors with external threads. For exploration operations in deeper formations, it is necessary to increase the length of the drill pipe. The male joint of the lower section of the drill pipe can be threaded on the female joint, and the female joint of the upper section of the drill pipe can be threaded on the male joint to increase the length of the drill pipe. length. However, this geological drill pipe has the following problems in use: 1. The tightness of the threaded connection is poor, and the flushing medium injected in the water hole of the drill pipe will leak during the drilling process of the geological drill pipe; 2. , the female joint and the male joint are all welded on the drill pipe body, and when the female joint and the male joint are damaged and cannot be replaced, the whole drill pipe body needs to be replaced, which will bring great waste.

Utility model content

The purpose of the utility model is to provide a geological drill pipe to solve the technical problems of poor sealing of the thread joint of the geological drill pipe and difficult replacement of the damaged female and male joints.

The technical solution of the geological drill pipe of the present utility model is: a geological drill pipe, which is characterized in that: it includes a plurality of rod bodies whose lengths extend along the up and down direction, and each rod body is connected up and down sequentially, and the two connected rod bodies are respectively called upper and lower rod bodies. Rod body and lower rod body, the lower end of the upper rod body and the upper end of the lower rod body are connected through a male joint and a female joint. Unicom forms a channel through the upper and lower ends, the outer circumference of the lower end of the upper rod body matches the inner hole of the upper end of the male joint, the outer circumference of the lower end of the male joint matches the inner hole of the upper end of the female joint, and the inner hole of the lower end of the female joint matches the lower end of the female joint. The outer circumference of the rod body matches, the matching outer circumference and the outer circumference of the inner hole have a first step, the first step has a first step surface, the matching outer circumference and the inner hole of the inner hole have a second step, the first step The outer peripheral surface of the stage is provided with external threads, and the hole wall of the second stage is provided with internal threads that match the corresponding external threads of the outer peripheral surface of the first stage. The second stage has a second stepped surface, and the second stage has a second stepped surface. A stepped surface contacts and seals with the end surface of the second stage, and a gasket is provided between the first stepped surface and the end surface of the second stage, and the second stepped surface contacts and seals with the end surface of the first stage.

The outer peripheral surface of the first stage and the inner hole wall of the second stage are both tapered surfaces, and the external threads on the outer peripheral surface of the first stage and the upper internal threads of the inner hole wall of the second stage are all tapered threads.

The outer peripheral surface of the first stage is the first tapered surface between the end surface of the first stage and the external thread, the outer peripheral surface of the first stage is the second tapered surface at the outer peripheral surface where the external thread is located, and the second The inner hole wall of the stage stage is the third cone surface between the second step surface and the internal thread, the inner hole wall of the second stage stage is the fourth cone surface at the inner hole wall where the internal thread is located, and the first cone surface is the third cone surface. The taper of the corresponding third taper surface is the same and the taper of the second taper surface is consistent with the taper of the fourth taper surface, and the taper of the first taper surface is not consistent with the taper of the second taper surface.

The sealing gasket is a T-shaped structure, and the matching first step surface and the end surface of the second stage are respectively provided with a corresponding first sealing groove and a second sealing groove, and the first sealing groove and the second sealing groove are connected to form a T T-shaped groove structure, the gasket is located in the T-shaped groove.

The geological drill pipe also includes a wireless speed measuring device. The wireless speed measuring device includes a speed sensor, a wireless data sending end, a first single-chip microcomputer, a wireless data receiving end, a second single-chip microcomputer and a display. Above, the rotational speed sensor is connected with the first single-chip computer, the first single-chip computer is connected with the wireless data sending end, the wireless data receiving end is connected with the second single-chip computer, and the second single-chip computer is connected with the display.

The inner diameter of the channel is consistent in the vertical direction.

The beneficial effects of the utility model are: the first step surface is in contact with the end surface of the second stage in a sealing fit, and the second step surface is in contact and sealing fit with the end face of the first stage. The tightness between the holes avoids the leakage of the flushing medium injected in the channel; moreover, the matched outer circumference and the inner hole are matched by the external thread on the first stage and the internal thread on the second stage. The connection is realized, which facilitates the disassembly of the male and female joints and the rod body as well as the male and female joints. When the joint or the rod body is damaged, it only needs to be disassembled and replaced accordingly, which reduces waste and saves costs.

Description of drawings

Fig. 1 is the structural representation of geological drilling rod in the utility model

Fig. 2 is the structural representation of the male joint of geological drilling rod in the utility model;

Fig. 3 is the structural representation of the female joint of geological drilling rod in the utility model;

Fig. 4 is a partial enlarged view of place A in Fig. 1;

FIG. 5 is a partially enlarged view of B in FIG. 4 .

In the figure: 1. Upper rod body; 2. Lower rod body; 3. Male connector; 4. Female connector; 5. Passage; 6. First stage; 7. First step surface; 8. Second stage; 9. 10. Gasket; 11. The end face of the first stage; 12. The end face of the second stage; 13. The first sealing groove; 14. The second sealing groove; 15. The first cone surface; 16 , the second cone surface; 17, the third cone surface; 18, the fourth cone surface.

detailed description

The embodiment of geological drilling rod in the utility model is shown in Fig. 1-5. The geological drilling rod includes a plurality of rod bodies whose lengths extend in the up-and-down direction, and each rod body is connected up and down in sequence. The two connected rods are called upper rod 1 and lower rod 2 respectively. The concept of the upper and lower rods is based on the two connected rods. The definition of the upper rod and the lower rod is explained as follows: For example, the number of rods in Figure 1 is two, and the two rods are connected. Among the two rods, the rod on the upper side is called the upper rod, and the rod on the lower side is called the lower rod. If there are three rod bodies, the three rod bodies are connected up and down in sequence, the uppermost rod body is connected to the upper end of the middle rod body, and the uppermost rod body is connected to the middle rod body. The uppermost rod body is the upper rod body, and the middle rod body is the lower rod body; the lower end of the middle rod body is connected to the lower rod body, and the lower end of the middle rod body is connected to the lower rod body. Among them, the rod body located in the middle is the upper rod body, and the rod body located on the lower side is the lower rod body.

The lower end of the upper rod body 1 and the upper end of the lower rod body 2 are connected through the male joint 3 and the female joint 4. Since the connection between the rod body and the rod body is realized through the male joint and the female joint, the distance between the rod body and the joint can be reduced. The number of times of installation and disassembly is beneficial to prolong the life of the rod body. When the joint is broken, you only need to replace the corresponding joint.

The centers of the upper rod body 1, the lower rod body 2, the male joint 3 and the female joint 4 all have inner holes, and the inner holes of the upper rod body 1, the lower rod body 2, the male joint 3 and the female joint 4 are connected to form a channel 5 connecting up and down. The inner diameter of the inner diameter is consistent in the up and down direction, that is, the channel is smooth and smooth in the up and down direction indoors, which provides convenience for coring operations in the lift core drilling process or the rope core drilling process. The outer circumference of the lower end of the upper rod body 1 matches the inner hole of the upper end of the male joint 3, the outer circumference of the lower end of the male joint 3 matches the inner hole of the upper end of the female joint 4, and the inner hole of the lower end of the female joint 4 matches the inner hole of the lower rod body 2 The outer circumference of the matching outer circumference and the outer circumference of the inner hole have a first step 6, the first step 6 has a first stepped surface 7, and the matched outer circumference and the inner hole of the inner hole have a second step 8, The second stage stage has a second step surface 9 . The first step surface and the end surface of the second stage are in contact and sealing fit, and there is a gasket 10 between the first step surface and the end surface of the second stage. The gasket is a T-shaped structure, and the gasket is a T-shaped structure. Corresponding first sealing grooves 13 and second sealing grooves 14 are respectively provided on the first step surface and the end surface 12 of the second stage of 7, and the first sealing grooves 13 and the second sealing grooves 14 are connected to form a T-shaped groove structure , the gasket is located in the T-shaped groove. The second stepped surface contacts and seals with the end surface of the first stage stage. The seal between the first step surface and the end surface of the second stage, and the seal between the second step surface and the end surface of the first stage are equivalent to adding two seals to the matching outer circumference and inner hole, increasing the sealing contact The area helps to improve the tightness of the matching outer circumference and inner hole, thereby improving the tightness of the entire geological drill pipe. The outer peripheral surface of the first stage 6 is provided with external threads, and the hole wall of the second stage 8 is provided with internal threads, which are realized by the cooperation of the external threads on the first stage and the corresponding internal threads on the second stage The cooperation between the outer circumference and the corresponding inner hole, the outer peripheral surface of the first stage 6 and the inner hole of the second stage 8 are both tapered surfaces, the external thread on the outer peripheral surface of the first stage and the inner hole of the second stage The upper internal threads of the wall are all tapered threads, and the cooperation of the tapered threads can make the matching outer circumference and inner hole have better sealing performance. On the outer peripheral surface of the first stage, between the end surface of the first stage and the external thread is the first tapered surface 15, and on the outer peripheral surface of the first stage, the outer peripheral surface where the external thread is located is the second tapered surface 16, On the inner hole wall of the second stage stage, there is a third tapered surface 17 between the second step surface and the internal thread, and on the inner hole wall of the second stage stage, the inner hole wall where the internal thread is located is a fourth tapered surface 18 , the taper of the first taper surface 15 is consistent with the corresponding third taper surface 17 and is in sealing fit, the taper of the second taper surface 16 is consistent with the taper of the fourth taper surface 18, the taper of the first taper surface 15 and the taper of the second taper surface 16 The taper is inconsistent. Since the taper of the first taper surface 15 is not consistent with the taper of the second taper surface 16, a seal is formed at the joint between the first taper surface 15 and the third taper surface, and at the joint between the second taper surface and the fourth taper surface, which contributes to Improve the sealing effect of the drill pipe.

The geological drill pipe also includes a wireless speed measuring device. The wireless speed measuring device includes a speed sensor, a wireless data sending end, a first single-chip microcomputer, a wireless data receiving end, a second single-chip microcomputer and a display. Above, the rotational speed sensor is connected with the first single-chip computer, the first single-chip computer is connected with the wireless data sending end, the wireless data receiving end is connected with the second single-chip computer, and the second single-chip computer is connected with the display. The working process of the wireless speed measuring device is roughly as follows: the rotational speed sensor measures the rotational speed of the drill pipe, and transmits the rotational speed value to the first single-chip microcomputer. terminal, and transmit the signal to the second single-chip microcomputer, and the second single-chip microcomputer controls the display to display the signal.

Claims (6)

1. A geological drilling rod, characterized in that: comprise a plurality of lengths extending along the up and down direction of the rod body, each rod body is connected up and down in sequence, and the two connected rod bodies are respectively called upper rod body and lower rod body, the lower end of the upper rod body and the lower rod body The upper ends of the lower rod body are connected by a male joint and a female joint. The center of the rod body, the male joint and the female joint has an inner hole. The outer circumference of the lower end matches the inner hole of the upper end of the male joint, the outer circumference of the lower end of the male joint matches the inner hole of the upper end of the female joint, and the inner hole of the lower end of the female joint matches the outer circumference of the lower rod body, and the matching outer circumference The outer periphery of the inner hole has a first stage, the first stage has a first stepped surface, the matching outer periphery and the inner hole of the inner hole have a second stage, the second stage has a second stepped surface, and the first stage The outer peripheral surface of the stage is provided with external threads, the hole wall of the second stage is provided with internal threads that match the corresponding external threads of the outer peripheral surface of the first stage, and the first step surface and the end surface of the second stage There is a contact sealing fit and a sealing gasket is provided between the first step surface and the end face of the second step stage, and the second step surface is in contact and sealing fit with the end surface of the first step stage. 2. The geological drill pipe according to claim 1, characterized in that: the outer peripheral surface of the first stage and the inner hole wall of the second stage are conical surfaces, and the external threads on the outer peripheral surface of the first stage and the second The upper internal threads of the inner hole wall of the platform stage are all tapered threads. 3. The geological drill pipe according to claim 2, characterized in that: the outer peripheral surface of the first stage is a first conical surface between the end face of the first stage and the external thread, and the outer peripheral surface of the first stage The outer peripheral surface where the external thread is located is the second tapered surface, the inner hole wall of the second stage is the third tapered surface between the second step surface and the inner thread, and the inner hole wall of the second stage is on the The wall of the inner hole where the internal thread is located is the fourth taper surface, the taper of the first taper surface and the corresponding third taper surface are consistent and sealed, the taper of the second taper surface is consistent with the taper of the fourth taper surface, and the taper of the first taper surface The taper does not match the taper of the second taper. 4. The geological drill pipe according to claim 1, characterized in that: the sealing gasket is a T-shaped structure, and the matched first step surface and the end surface of the second stage are respectively provided with corresponding first sealing grooves and The second sealing groove, the first sealing groove and the second sealing groove are connected to form a T-shaped groove structure, and the sealing pad is located in the T-shaped groove. 5. The geological drill pipe according to claim 1, characterized in that: the geological drill pipe also includes a wireless speed measuring device, and the wireless speed measuring device includes a rotational speed sensor, a wireless data sending end, a first single-chip microcomputer, a wireless data receiving end, a second single-chip microcomputer And the display, the speed sensor, the wireless data sending end and the first single-chip microcomputer are arranged on the rod body, the speed sensor is connected with the first single-chip microcomputer, the first single-chip microcomputer is connected with the wireless data sending end, the wireless data receiving end is connected with the second single-chip microcomputer, and the second single-chip microcomputer Connect to the monitor. 6. The geological drill pipe according to claim 1, characterized in that: the inner diameter of the channel is consistent in the vertical direction.