CN216665593U

CN216665593U - Electric air source sound generating device suitable for internal and external explosion

Info

Publication number: CN216665593U
Application number: CN202123085975.3U
Authority: CN
Inventors: 陈友军; 王昌斌
Original assignee: Hubei Jianghan Petroleum Instrument & Meter Co ltd
Current assignee: Hubei Jianghan Petroleum Instrument & Meter Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-03
Anticipated expiration: 2031-12-09

Abstract

The utility model relates to an electric air source sound generating device suitable for internal and external explosion, wherein a piston rod assembly, a gun body and a sealing plug assembly form a cylindrical airtight cavity at the upper end of the piston rod assembly, the airtight cavity is communicated with a gun discharging electromagnetic valve through an air discharging hole on the gun body, the diameter of a cylinder at the lower end of the piston rod is smaller than that of a cylinder at the upper end, an annular groove in the middle of the upper section of the cylinder is communicated with an air chamber, and the centers of the piston rod and the sealing plug are respectively provided with a ventilation damping hole and an internal thread of a sealing screw assembly for installing the sealing ventilation damping hole. When the sleeve pressure in the annular space is greater than 0.5MPa, the sealing bolt assembly is used for sealing the ventilation damping hole of the plug, and the ventilation damping hole of the piston rod is unblocked to realize implosion; when the sleeve pressure in the annular space is less than or equal to 0.5MPa, the piston rod ventilation damping hole is sealed by the sealing screw assembly, so that the sealed plug ventilation damping hole is unblocked, and the outward explosion is realized. The utility model can make the same electric air source sound generating device suitable for internal and external explosion by only changing the installation position of the sealing screw assembly under the condition of not increasing or decreasing parts.

Description

Electric air source sound generating device suitable for internal and external explosion

Technical Field

The utility model provides an electric air source sound generating device adaptive to liquid level monitoring of an oil-gas well, and particularly relates to an air source sound generating device adaptive to internal and external explosion.

Background

The liquid level depth test and monitoring for oil and gas well is a conventional test item for low pressure well testing in oil field, and the instruments used for liquid level depth test and monitoring are generally called liquid level automatic monitor, continuous liquid level tester, etc. and mainly comprise an air source sound generating device, namely a pulse signal sounder and an acquisition controller. The gas source sound generating device is connected to the annular space of a wellhead casing, the pressure of the casing is generally less than 0.5MPa, when the gas source sound generating device works, high-pressure gas outside a well is released (exploded) into the well to generate a pressure sound wave pulse signal at the wellhead, and the sound wave pulse signal is transmitted downwards along the annular space between the casing and an oil pipe and is reflected by an oil pipe coupling and a liquid level. For a well with the casing pressure of more than 0.5MPa, the gas source sound generating device also generates a pressure sound wave pulse signal at a well head by releasing (implosing) high-pressure gas in the well to the outside of the well during working, the well head sound wave pulse signal is also transmitted downwards along an annular space between the casing and an oil pipe, and is reflected by an oil pipe coupling and a liquid level. The sound wave signal receiving assembly of the air source sound generating device receives well head waves and reflected sound wave pulse signals and transmits the signals to the acquisition controller, the acquisition controller amplifies and filters the signals, sound speed and liquid level depth are obtained according to time differences of sound wave reflected waves of the well head and the liquid level and sound wave reflected waves of the joint hoop and the joint hoop, and a liquid level depth monitoring curve is drawn according to the liquid level depth.

At present, the electric air source sound generating device has two modes of an electromagnet and an electromagnetic valve, the electromagnet directly controls the piston rod to move to release air so as to generate sound wave pulse, although the electric air source sound generating device can be simultaneously suitable for the two modes of internal and external explosion, the pressure suitable for cased wells is generally not more than 5MPa, and the power consumption is large. The electromagnetic valve adopts indirect air release to control the piston rod to move for air release so as to generate sound wave pulse, the diameter of an air release hole of the electromagnetic valve can be as small as 1.5mm, so the pressure of the electromagnetic valve suitable for cased wells generally can reach more than 10MPa, and the power consumption is low, but the same generating device can only adapt to external explosion or only adapt to internal explosion, and the adaptability is poor. Therefore, an electric air source sound generating device which can adapt to implosion and implosion is urgently needed on site.

Disclosure of Invention

The utility model aims to provide a novel electric air source sound generating device which can adapt to implosion and implosion under the condition of not increasing or decreasing parts. A piston rod assembly, a gun body and a sealing plug assembly in the generating device form a cylindrical airtight cavity at the upper end of the piston rod assembly, the airtight cavity is communicated with a gun discharging electromagnetic valve through an air discharging hole in the gun body, the centers of the piston rod and the sealing plug are respectively provided with an air ventilating damping hole and an internal thread of a sealing screw assembly for installing the sealed air ventilating damping hole, the diameter of a cylinder at the lower end of the piston rod is smaller than that of a cylinder at the upper end, and an annular groove in the middle of the cylinder at the upper end is communicated with an air chamber. During implosion, the sealing screw assembly seals the ventilation damping hole of the sealing plug, and high-pressure air of the sleeve of the annular space enters the airtight cavity through the ventilation damping hole of the piston rod. When the explosion happens, the sealing screw assembly seals the vent damping hole of the piston rod assembly, high-pressure air of an external air bottle enters the air chamber through the inflation pressure regulating connector assembly and enters the airtight cavity through the vent damping hole of the sealing plug, the piston rod assembly seals the sound generating port leftwards under the action of the high-pressure air of the airtight cavity and seals and separates the annular space of the sleeve from the air chamber, a computer (singlechip) controls the gun-releasing electromagnetic valve to be powered off instantly and then closed after the gun-releasing electromagnetic valve is opened instantly, the quantity of the high-pressure air in the airtight cavity discharged instantly through the vent hole is larger than the quantity of the high-pressure air source outside the airtight cavity supplemented synchronously through the vent damping hole, the air pressure of the airtight cavity is reduced instantly, the piston rod assembly is lifted rapidly under the action of the high-pressure air of the sleeve on the lower end face of the piston rod assembly or the high-pressure air of the air chamber on the lower end face of the piston rod assembly, the sound generating port of the generating device is opened to generate a sound wave signal, and the sound generating port is closed rapidly along with the gun-releasing electromagnetic valve, high-pressure air in the sleeve or the air chamber enters the airtight cavity through the damping hole, and the pressure of the airtight cavity rises rapidly, so that the piston rod assembly seals the sound generating opening leftwards. At this point, the sound generating device completes one sound wave pulse signal transmission.

The technical scheme adopted by the utility model for solving the technical problem is as follows:

the utility model provides an electronic air supply sound generating device who explodes inside and outside adaptation, by the rifle body, the piston rod assembly, the manometer, aerify the pressure regulating and connect the assembly, the sealing screw assembly, sealed end cap assembly, the air chamber, sound wave signal reception assembly and blow gun solenoid valve and constitute, the rifle body coupling is in oil well casing annular space, the manometer, aerify the pressure regulating and connect the assembly, sound wave signal reception assembly, blow gun solenoid valve and air chamber and install respectively on the rifle body, the piston rod assembly, sealed end cap assembly install in the rifle body, its characterized in that: the piston rod assembly, the rifle body, sealed end cap assembly forms cylindrical airtight chamber in piston rod assembly upper end, the piston rod of piston rod assembly and the sealed end cap center of sealed end cap assembly all have the damping hole of ventilating and install the internal thread of sealed damping hole sealing screw assembly of ventilating, airtight chamber communicates with each other with the rifle solenoid valve of putting through the gas outlet on the rifle body, when utilizing sleeve pipe pressure implosion, sealing screw assembly passes through on the sealed end cap of internal thread installation, when utilizing outside air supply to explode outward, sealing screw assembly passes through the internal thread and installs on the piston rod, sealing screw assembly separates sleeve pipe annular space and air chamber seal all the time, the damping hole of ventilating makes airtight chamber communicate with each other with generating device work high-pressure area air supply all the time again.

The piston rod is of a two-section cylinder structure, the diameter of the lower end cylinder is smaller than that of the upper end cylinder, O-shaped ring sealing grooves are formed in the two ends of the piston rod, an annular groove is formed in the middle of the upper end cylinder, and the annular groove is communicated with the air chamber through the gun body.

In the scheme, when the electric air source sound generating device is used, the installation position of the sealing screw assembly can be changed according to the casing pressure of the annular space of the oil well, so that the same sound generating device can adapt to both implosion and implosion under the condition of not increasing or decreasing parts, and the problem that the existing same electric air source sound generating device in the oil field cannot adapt to both implosion and implosion is thoroughly solved.

Has the advantages that:

according to the characteristic that the transmitting time of the sound wave pulse signal is extremely short, the utility model ingeniously utilizes the damping influence of the vent damping hole on the fluid, the vent damping holes which can be sealed by the sealing screw assembly are simultaneously designed on the piston rod and the sealing plug, and when the device is used, the same sound generating device can adapt to implosion and implosion under the condition of not increasing or decreasing parts only by changing the installation position of the sealing screw assembly according to the pressure of an oil well casing, thereby thoroughly solving the problem that the existing same electric air source sound generating device in the oil field can not adapt to the implosion and implosion simultaneously.

Meanwhile, because the area of the air vent of the electromagnetic valve is only about 6 percent of that of the sound generating opening, the movable iron core for sealing the air vent is positioned in a high-pressure area, so that the working pressure of the electromagnetic valve can reach more than 10 MPa. Therefore, the working pressure of the air source sound generating device can reach more than 10 MPa.

Drawings

Fig. 1 is a schematic structural view of the mounting position of the implosion seal screw assembly of the present invention.

Fig. 2 is a schematic structural view of the mounting position of the pop-up seal screw assembly of the present invention.

Fig. 3 is a schematic view of a piston rod assembly according to the present invention.

FIG. 4 is a schematic view of a seal screw assembly according to the present invention.

Fig. 5 is a schematic structural view of the sealing plug assembly of the present invention.

Detailed Description

The utility model is described in detail below with reference to the accompanying drawings:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, an electric air source sound generating device adapted to internal and external explosion mainly comprises a gun body 1, a piston rod assembly 2, a pressure gauge 3, an inflation pressure regulating connector assembly 4, a sealing screw assembly 5, a sealing plug assembly 6, an air chamber 7, an acoustic signal receiving assembly 8 and a gun discharging electromagnetic valve 9, wherein the gun body 1 is connected to an annular space of an oil well casing, the pressure gauge 3, the inflation pressure regulating connector assembly 4, the air chamber 7, the acoustic signal receiving assembly 8 and the gun discharging electromagnetic valve 9 are respectively arranged on the gun body 1, the piston rod assembly 2 and the sealing plug assembly 6 are arranged in the gun body 1, and the electric air source sound generating device is characterized in that: the piston rod assembly 2, the gun body 1, the sealed end cap assembly 6 forms a cylindrical airtight cavity on the upper end of the piston rod assembly 2, the piston rod 11 of the piston rod assembly 2 and the sealed end cap 16 of the sealed end cap assembly 6 are both provided with a ventilation damping hole and an internal thread for installing the sealed ventilation damping hole and sealing the screw assembly 5, the airtight cavity is communicated with the gun-firing electromagnetic valve 9 through the ventilation hole on the gun body 1, when the sleeve pressure is utilized for implosion, the sealing screw assembly 5 is installed on the sealed end cap 16 through the internal thread, when the external air source is utilized for external explosion, the sealing screw assembly 5 is installed on the piston rod 11 through the internal thread, the annular space of the sleeve and the air chamber 7 are sealed and separated by the sealing screw assembly 5 all the time, and the ventilation damping hole enables the airtight cavity to be communicated with the air source of the working high-pressure area of the generating device all the time. As shown in fig. 3, the piston rod 11 is a two-section cylinder structure, the diameter of the lower end cylinder is smaller than that of the upper end cylinder, the two ends of the lower end cylinder are respectively provided with an O-ring (10, 12) sealing groove, the middle of the upper end cylinder is provided with an annular groove, the annular groove is communicated with the air chamber 7 through the gun body 1, and the middle of the upper end cylinder is provided with a ventilation damping hole for communicating the annular space of the sleeve and the airtight cavity and an internal thread for installing the sealed ventilation damping hole sealing screw assembly 5. As shown in fig. 4, the seal screw 14 of the seal screw assembly 5 is a cylindrical head screw, and the lower end of the cylindrical head is provided with an O-ring 13 seal groove. As shown in fig. 5, the sealing plug 16 of the sealing plug assembly 6 is a hexagonal socket head screw, the lower end of the socket head is provided with a sealing groove of an O-ring 15, and the middle of the socket head is provided with a ventilation damping hole for communicating the air chamber and the airtight chamber and an internal thread for installing the sealing screw assembly 5 with the ventilation damping hole.

As shown in fig. 1, 3, 4 and 5, during implosion, the sealing screw assembly 5 is arranged on the sealing plug assembly 6 to seal the ventilation damping hole of the sealing plug 16, sleeve high-pressure air enters the airtight cavity through the ventilation damping hole of the piston rod 11, because the diameter of the cylinder at the lower end of the piston rod 11 is smaller than that of the cylinder at the upper end, the piston rod assembly 6 seals the sound generating port leftwards under the action of the sleeve high-pressure air of the airtight cavity and seals and separates the annular space of the sleeve from the air chamber, when in work, a computer (single chip microcomputer) controls the gun-releasing electromagnetic valve 9 to be powered off instantly, the gun-releasing electromagnetic valve 9 is turned on instantly and then turned off, the instantly discharged air quantity of the high-pressure air in the airtight cavity is larger than that of the annular space of the sleeve, the air quantity is supplemented synchronously through the ventilation damping hole of the piston rod 11, the air pressure in the airtight cavity is instantly reduced, the piston rod assembly 6 is rapidly lifted under the action of the high-pressure air in the annular space of the sleeve at the lower end surface of the piston rod, and opening a sound generating port of the generating device, enabling high-pressure air to enter the air chamber 7 through the sound generating port, and simultaneously enabling the high-pressure air to enter the airtight cavity through the ventilation damping hole of the piston rod 11 along with the rapid closing of the gun discharging electromagnetic valve 9 and the high-pressure air in the annular space of the sleeve, so that the pressure of the airtight cavity rapidly rises, and the piston rod assembly 6 seals the sound generating port leftwards. At this point, the sound generating device completes one-time implosion sound wave pulse signal transmission.

As shown in fig. 2, 3, 4 and 5, during external explosion, the sealing screw assembly 5 is arranged on the piston rod assembly 2 to seal the ventilation damping hole of the piston rod 11, high-pressure air in the air chamber 7 enters the airtight cavity through the ventilation damping hole of the sealing plug 16, the piston rod assembly 6 seals the sound generating port leftwards under the action of the high-pressure air in the air chamber of the airtight cavity and seals and separates the annular space of the sleeve from the air chamber, when the gun-discharging electromagnetic valve 9 works, a computer (single chip microcomputer) controls the gun-discharging electromagnetic valve 9 to be powered on instantly and then switched off, the gun-discharging electromagnetic valve 9 is switched off instantly when being switched on instantly, the instantly discharged air quantity of the high-pressure air in the airtight cavity is larger than the synchronously supplemented air quantity of the air in the air chamber 7 through the ventilation damping hole of the sealing plug 16, the air pressure in the airtight cavity is instantly reduced, the piston rod assembly 2 is rapidly lifted under the action of the high-pressure air in the air chamber 7 at the step surface at the lower end thereof, the sound generating port of the generating device is opened, the air chamber 7 enters the annular space of the sleeve through the sound generating port, meanwhile, with the gun discharging electromagnetic valve 9 being closed rapidly, high-pressure air in the air chamber 7 enters the airtight cavity through the ventilation damping hole of the sealing plug 16, the pressure of the airtight cavity rises rapidly, so that the piston rod assembly 6 seals the sound generating opening leftwards, and the sound generating device completes one-time external explosion sound wave pulse signal emission.

Under the condition of not increasing or decreasing parts, the same air source electric sound generating device can be used for implosion and implosion only by changing the mounting position of the sealing screw assembly 5, and the problem that the same electric air source sound generating device in an oil field cannot be simultaneously suitable for the implosion and the implosion is thoroughly solved.

Claims

1. The utility model provides an electronic air supply sound generating device who explodes inside and outside adaptation, by the rifle body (1), piston rod assembly (2), manometer (3), aerify pressure regulating and connect assembly (4), sealing screw assembly (5), sealed end cap assembly (6), air chamber (7), sound wave signal reception assembly (8) and put rifle solenoid valve (9) and constitute, the rifle body (1) is connected in oil well sleeve pipe annular space, manometer (3), aerify pressure regulating and connect assembly (4), air chamber (7), sound wave signal reception assembly (8) and put rifle solenoid valve (9) and install respectively on the rifle body (1), piston rod assembly (2), sealed end cap assembly (6) are installed in rifle body (1), its characterized in that: the piston rod assembly (2), the gun body (1) and the sealing plug assembly (6) form a cylindrical airtight cavity at the upper end of the piston rod assembly (2), the centers of a piston rod (11) of the piston rod assembly (2) and a sealing plug (16) of the sealing plug assembly (6) are respectively provided with a ventilation damping hole and an internal thread of a sealing screw assembly (5) provided with the sealing ventilation damping hole, the airtight cavity is communicated with a gun discharging electromagnetic valve (9) through a gas discharging hole in the gun body (1), and when the sleeve pressure is utilized for implosion, the sealing screw assembly (5) is arranged on the sealing plug (16) through the internal thread; when an external air source is utilized for external explosion, the sealing screw assembly (5) is installed on the piston rod (11) through internal threads, the annular space of the sleeve and the air chamber (7) are sealed and separated by the sealing screw assembly (5) all the time, and the air-tight cavity is communicated with an air source of a working high-pressure area of the generating device all the time through the ventilation damping hole.

2. An electric air source sound generating device adapted to internal and external explosion as claimed in claim 1, wherein: the piston rod (11) is of a two-section cylinder structure, the diameter of the lower end cylinder is smaller than that of the upper end cylinder, O-shaped ring sealing grooves are formed in the two ends of the piston rod, an annular groove is formed in the middle of the upper end cylinder, and the annular groove is communicated with the air chamber (7) through a gun body.