Pressure gauge sensor dismounting device
Technical Field
The invention relates to the technical field of petroleum well testing auxiliary equipment, in particular to a pressure gauge sensor dismounting device.
Background
The field of oil and gas field exploration and development widely uses downhole electronic pressure gauges to obtain pressure and temperature values of oil, gas and water wells, and reservoir stratum data is obtained by analyzing and researching the pressure and the temperature, so that a theoretical basis is provided for further exploration and development of the oil and gas field. The pressure and temperature testing operation can not be separated from the electronic pressure gauge, and the pressure and temperature testing operation is mainly divided into a sapphire pressure gauge and a quartz crystal pressure gauge according to the difference of selected sensors. Compared with a quartz crystal pressure gauge, the sapphire pressure gauge has the characteristics of high shock resistance, short temperature sensing time and small volume, and is widely applied to measurement and recording of pressure and temperature in the stratum of an oil and gas field.
The core component of the sapphire pressure gauge is the sensor. Because the underground working environment is severe and changeable, except that the manufacturing of the induction element needs to select special materials which are high temperature resistant and high pressure resistant and meet the requirements of underground operation, the operability of field personnel is also considered in the manufacturing process. The simple maintenance procedure can improve the maintenance qualification rate, ensure the reliability of the electronic pressure gauge and prolong the service life of the electronic pressure gauge.
The sealing structure of the sapphire pressure gauge sensor widely applied at present is that a plastic gasket is additionally arranged at the back of an O-shaped sealing ring of the sensor to prevent fluid or solid particles in a well from invading the inside of the pressure gauge from the adjacent joint surface of the sensor and a pressure sensor mounting seat, the O-shaped sealing ring generates plastic deformation in case of corrosion, when the O-shaped sealing ring of the sensor needs to be checked and replaced, the problem that the sensor cannot be detached exists, only the sensor is used insistently, and in case of failure of the O-shaped sealing ring, the fluid in the well enters the inner cavity of the pressure gauge to cause the damage of the sensor, a main board and a battery of the pressure gauge, the test fails, the pressure gauge needs. It can be seen that the sealing system of sapphire pressure gauge sensor can be fine protection pressure gauge, make its normal work directly decide the success or failure of construction operation. With the acceleration of the exploration and development speed of oil and gas fields and the continuous refinement of oil and gas exploration and oil and gas field work, the pressure test work is more and more frequent. The pressure testing process has higher requirements, the adjacent joint surface of the pressure gauge sensor and the pressure sensor mounting seat must be reliably sealed in the underground pressure testing construction operation, the normal operation of the construction test can be ensured, and the inspection and the replacement of the O-shaped sealing ring of the pressure gauge sensor are particularly important.
Chinese patent document with publication number CN 206376860U, publication number 2017, 08.04.2017 discloses an underground electronic pressure gauge, which is characterized by comprising an upper joint, wherein two ends of the upper joint are respectively connected with a connector lug and an intermediate joint, a battery is arranged in the upper joint, the end part of the intermediate joint is connected with a lower joint, a sensor is arranged in the lower joint, a support is arranged in the intermediate joint, the support is detachably connected with the battery and the sensor respectively, and a circuit board is further arranged on the support.
This patent document discloses a downhole electronic pressure gauge can dismantle continuously with battery and sensor respectively through with the support, installs the circuit board simultaneously on the support to avoid linking to each other circuit board and the direct welding of sensor, make electronic pressure gauge's maintenance more convenient, when electronic pressure gauge breaks down, can change circuit board or sensor alone, and need not carry out the overall change. However, since the circuit board is mounted on the bracket, the sensor is more difficult to disassemble, the disassembling efficiency is low, and the reliability is poor.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the pressure gauge sensor dismounting device which can realize the quick separation of the sensor and the mounting seat, has high dismounting efficiency and good reliability, is convenient for checking and replacing the O-shaped sealing ring of the pressure gauge sensor and ensures the use stability of the pressure gauge sensor.
The invention is realized by the following technical scheme:
the utility model provides a pressure gauge sensor dismounting device, includes the mount pad that is used for placing the sensor, its characterized in that: still including dismantling the bolt seat, dismantling the bolt and being used for promoting the hollow ejector pin of sensor, be provided with gland and filtration steel sheet in the mount pad, gland passes through threaded connection with the mount pad, it connects in gland to filter the steel sheet, the one end of hollow ejector pin is located the mount pad, and the other end of hollow ejector pin is connected with the protective sheath, the protective sheath is located dismantlement bolt seat, there is straining nut through threaded connection on the hollow ejector pin, the dismantlement bolt passes through threaded connection in dismantling the bolt seat, dismantlement bolt and protective sheath contact, the dismantlement bolt seat is connected with the mount pad.
The sealing gland is cylindrical and comprises a cylinder section and an external thread section, two sealing grooves are formed in the cylinder section, and a straight groove is formed in the end face of the external thread section.
The protective sheath includes big cylinder section, frustum section and small circle post section, and big cylinder section, frustum section and small circle post section integrated into one piece form.
The detachable bolt seat comprises an upper section, a middle section and a lower section, wherein the upper section, the middle section and the lower section are integrally formed, the diameter of the middle section is larger than that of the upper section, and the diameter of the middle section is smaller than that of the lower section.
The dismounting bolt comprises a hexagonal section, a threaded section and a circular truncated cone section, and the hexagonal section, the threaded section and the circular truncated cone section are integrally formed.
The hollow ejector rod is provided with a first central wire hole, the protective sleeve is provided with a second central wire hole, the dismounting bolt is provided with a third central wire hole, the first central wire hole corresponds to the second central wire hole, and the second central wire hole corresponds to the third central wire hole.
The working principle of the invention is as follows:
when the hollow ejector rod pre-installation tool is used, the hollow ejector rod penetrates through the installation seat, then the tensioning nut is screwed into the hollow ejector rod until the tensioning nut is attached to the end face of the installation seat, and then the tensioning nut is screwed to be separated from the hollow ejector rod, so that the hollow ejector rod is pre-installed; after the pre-installation of the hollow ejector rod is completed, the protective sleeve is screwed in, the dismounting bolt seat is connected with the mounting seat through threads, after the connection of the dismounting bolt seat and the mounting seat is completed, the dismounting bolt is screwed in the dismounting bolt seat until the dismounting bolt contacts with the protective sleeve on the hollow ejector rod, the dismounting bolt continues to rotate, the hollow ejector rod and the sensor are pushed out of the mounting seat, and the dismounting operation of the sensor is completed.
The beneficial effects of the invention are mainly shown in the following aspects:
firstly, in the invention, a sealing gland and a filter steel sheet are arranged in a mounting seat, the sealing gland is connected with the mounting seat through screw threads, the filter steel sheet is connected in the sealing gland, one end of a hollow ejector rod is arranged in the mounting seat, the other end of the hollow ejector rod is connected with a protective sleeve, the protective sleeve is arranged in a dismounting bolt seat, the hollow ejector rod is connected with a tensioning nut through screw threads, a dismounting bolt is connected in a dismounting bolt seat through screw threads, the dismounting bolt is contacted with the protective sleeve, the dismounting bolt seat is connected with the mounting seat, when a sensor is to be dismounted, the dismounting bolt is screwed into the dismounting bolt seat until the dismounting bolt is contacted with the protective sleeve on the hollow ejector rod, the dismounting bolt is continuously rotated, the axial acting force generated by the dismounting bolt acts on the hollow ejector rod, the sensor can be smoothly pushed out of the mounting seat, can realize the quickly separating of sensor and mount pad, dismantle efficient, the good reliability, the inspection of being convenient for is changed "O" shape sealing washer of pressure gauge sensor, ensures the stability in use of pressure gauge sensor.
The sealing gland is cylindrical and comprises a cylinder section and an external thread section, two sealing grooves are formed in the cylinder section, a straight groove is formed in the end face of the external thread section, good sealing performance is achieved, and the sealing gland can be conveniently disassembled and assembled by a straight screwdriver for cleaning.
The protective sleeve comprises a large cylindrical section, a frustum section and a small cylindrical section which are integrally formed, so that a dismounting bolt can be prevented from being in direct contact with the end face of the hollow ejector rod, the hollow ejector rod can be effectively protected, and the service life of the hollow ejector rod is prolonged.
According to the dismounting bolt seat, the dismounting bolt seat comprises the upper section, the middle section and the lower section which are integrally formed, the diameter of the middle section is larger than that of the upper section, the diameter of the middle section is smaller than that of the lower section, the structural strength is high, and the use stability of the whole dismounting device is improved.
According to the invention, the dismounting bolt comprises the hexagonal section, the threaded section and the circular truncated cone section, and the hexagonal section, the threaded section and the circular truncated cone section are integrally formed, so that the overall structural strength of the dismounting bolt is improved.
Sixth, the invention, open the first central wire hole on the hollow knockout pin, open the second central wire hole on the protective sleeve, open the third central wire hole on the disassembling bolt, the first central wire hole corresponds to second central wire hole, the second central wire hole corresponds to third central wire hole, through setting up the central wire hole, facilitate the wire of the sensor wiring pile to wear out and penetrate, the protective wire is not damaged while disassembling and assembling the sensor.
Drawings
The invention will be further described in detail with reference to the drawings and the detailed description, in which:
FIG. 1 is a schematic structural view of the present invention;
the labels in the figure are: 1. the sensor comprises a sensor, 2, an installation seat, 3, a disassembly bolt seat, 4, a disassembly bolt, 5, a hollow ejector rod, 6, a sealing gland, 7, a filtering steel sheet, 8, a protective sleeve, 9, a tensioning nut, 10, a column body section, 11, an external thread section, 12, a sealing groove, 13, a groove, 14, a large column body section, 15, a frustum section, 16, a small column body section, 17, an upper section, 18, a middle section, 19, a lower section, 20, a hexagonal section, 21, a thread section, 22, a frustum section, 23, a first central wire hole, 24, a second central wire hole, 25 and a third central wire hole.
Detailed Description
Example 1
Referring to fig. 1, a pressure gauge sensor dismounting device, including mount pad 2 that is used for placing sensor 1, still including dismantling bolt seat 3, dismantling bolt 4 and the hollow ejector pin 5 that is used for promoting sensor 1, be provided with gland 6 and filter steel sheet 7 in the mount pad 2, gland 6 passes through threaded connection with mount pad 2, filter steel sheet 7 is connected in gland 6, the one end of hollow ejector pin 5 is located mount pad 2, and the other end of hollow ejector pin 5 is connected with protective sheath 8, protective sheath 8 is located dismantlement bolt seat 3, there is tensioning nut 9 through threaded connection on the hollow ejector pin 5, dismantling bolt 4 passes through threaded connection in dismantling bolt seat 3, dismantlement bolt 4 and the contact of protective sheath 8, dismantlement bolt seat 3 is connected with mount pad 2.
The embodiment is the most basic implementation mode, a sealing gland 6 and a filter steel sheet 7 are arranged in a mounting seat 2, the sealing gland 6 is connected with the mounting seat 2 through threads, the filter steel sheet 7 is connected in the sealing gland 6, one end of a hollow ejector rod 5 is arranged in the mounting seat 2, the other end of the hollow ejector rod 5 is connected with a protective sleeve 8, the protective sleeve 8 is arranged in a disassembly bolt seat 3, the hollow ejector rod 5 is connected with a tensioning nut 9 through threads, a disassembly bolt 4 is connected in the disassembly bolt seat 3 through threads, the disassembly bolt 4 is in contact with the protective sleeve 8, the disassembly bolt seat 3 is connected with the mounting seat 2, when a sensor 1 is to be disassembled, the disassembly bolt 4 is screwed into the disassembly bolt seat 3 until the disassembly bolt 4 is in contact with the protective sleeve 8 on the hollow ejector rod 5, the disassembly bolt 4 continues to rotate, the axial action force generated by the disassembly, make sensor 1 can be smooth by release mount pad 2, accomplish sensor 1's dismantlement operation, than prior art, can realize the quick separation of sensor 1 and mount pad 2, dismantle efficiently, the good reliability, the inspection of being convenient for is changed pressure gauge sensor 1's "O" shape sealing washer, guarantee pressure gauge sensor 1's stability in use.
Example 2
Referring to fig. 1, a pressure gauge sensor dismounting device, including mount pad 2 that is used for placing sensor 1, still including dismantling bolt seat 3, dismantling bolt 4 and the hollow ejector pin 5 that is used for promoting sensor 1, be provided with gland 6 and filter steel sheet 7 in the mount pad 2, gland 6 passes through threaded connection with mount pad 2, filter steel sheet 7 is connected in gland 6, the one end of hollow ejector pin 5 is located mount pad 2, and the other end of hollow ejector pin 5 is connected with protective sheath 8, protective sheath 8 is located dismantlement bolt seat 3, there is tensioning nut 9 through threaded connection on the hollow ejector pin 5, dismantling bolt 4 passes through threaded connection in dismantling bolt seat 3, dismantlement bolt 4 and the contact of protective sheath 8, dismantlement bolt seat 3 is connected with mount pad 2.
The sealing gland 6 is cylindrical and comprises a cylinder section 10 and an external thread section 11, two sealing grooves 12 are formed in the cylinder section 10, and a straight groove 13 is formed in the end face of the thread section 21.
In this embodiment, the sealing gland 6 is cylindrical and includes a cylindrical body section 10 and an external threaded section 11, two sealing grooves 12 are formed on the cylindrical body section 10, and a linear groove 13 is formed on the end surface of the threaded section 21, so that the sealing gland has good sealing performance and is convenient to be cleaned by using a linear screwdriver to disassemble and assemble the sealing gland 6.
Example 3
Referring to fig. 1, a pressure gauge sensor dismounting device, including mount pad 2 that is used for placing sensor 1, still including dismantling bolt seat 3, dismantling bolt 4 and the hollow ejector pin 5 that is used for promoting sensor 1, be provided with gland 6 and filter steel sheet 7 in the mount pad 2, gland 6 passes through threaded connection with mount pad 2, filter steel sheet 7 is connected in gland 6, the one end of hollow ejector pin 5 is located mount pad 2, and the other end of hollow ejector pin 5 is connected with protective sheath 8, protective sheath 8 is located dismantlement bolt seat 3, there is tensioning nut 9 through threaded connection on the hollow ejector pin 5, dismantling bolt 4 passes through threaded connection in dismantling bolt seat 3, dismantlement bolt 4 and the contact of protective sheath 8, dismantlement bolt seat 3 is connected with mount pad 2.
The sealing gland 6 is cylindrical and comprises a cylinder section 10 and an external thread section 11, two sealing grooves 12 are formed in the cylinder section 10, and a straight groove 13 is formed in the end face of the thread section 21.
The protective sleeve 8 comprises a large cylindrical section 14, a frustum section 15 and a small cylindrical section 16, wherein the large cylindrical section 14, the frustum section 15 and the small cylindrical section 16 are integrally formed.
In another preferred embodiment, the protection sleeve 8 includes a large cylindrical section 14, a frustum section 15 and a small cylindrical section 16, and the large cylindrical section 14, the frustum section 15 and the small cylindrical section 16 are integrally formed, so as to avoid direct contact between the detachable bolt 4 and the end surface of the hollow ejector rod 5, effectively protect the hollow ejector rod 5, and prolong the service life of the hollow ejector rod 5.
Example 4
Referring to fig. 1, a pressure gauge sensor dismounting device, including mount pad 2 that is used for placing sensor 1, still including dismantling bolt seat 3, dismantling bolt 4 and the hollow ejector pin 5 that is used for promoting sensor 1, be provided with gland 6 and filter steel sheet 7 in the mount pad 2, gland 6 passes through threaded connection with mount pad 2, filter steel sheet 7 is connected in gland 6, the one end of hollow ejector pin 5 is located mount pad 2, and the other end of hollow ejector pin 5 is connected with protective sheath 8, protective sheath 8 is located dismantlement bolt seat 3, there is tensioning nut 9 through threaded connection on the hollow ejector pin 5, dismantling bolt 4 passes through threaded connection in dismantling bolt seat 3, dismantlement bolt 4 and the contact of protective sheath 8, dismantlement bolt seat 3 is connected with mount pad 2.
The sealing gland 6 is cylindrical and comprises a cylinder section 10 and an external thread section 11, two sealing grooves 12 are formed in the cylinder section 10, and a straight groove 13 is formed in the end face of the thread section 21.
The protective sleeve 8 comprises a large cylindrical section 14, a frustum section 15 and a small cylindrical section 16, wherein the large cylindrical section 14, the frustum section 15 and the small cylindrical section 16 are integrally formed.
The disassembly bolt seat 3 comprises an upper section 17, a middle section 18 and a lower section 19, wherein the upper section 17, the middle section 18 and the lower section 19 are integrally formed, the diameter of the middle section 18 is larger than that of the upper section 17, and the diameter of the middle section 18 is smaller than that of the lower section 19.
The dismounting bolt 4 comprises a hexagonal section 20, a threaded section 21 and a circular truncated cone section 22, and the hexagonal section 20, the threaded section 21 and the circular truncated cone section 22 are integrally formed.
The hollow ejector rod 5 is provided with a first central wire hole 23, the protective sleeve 8 is provided with a second central wire hole 24, the dismounting bolt 4 is provided with a third central wire hole 25, the first central wire hole 23 corresponds to the second central wire hole 24, and the second central wire hole 24 corresponds to the third central wire hole 25.
The present embodiment is the best mode, and the dismantling bolt seat 3 includes upper segment 17, middle section 18 and lower section 19, and upper segment 17, middle section 18 and lower section 19 integrated into one piece form, and middle section 18 diameter is greater than upper section 17 diameter, and middle section 18 diameter is less than lower section 19 diameter, and structural strength is high, does benefit to improving whole dismounting device's stability in use.
The dismounting bolt 4 comprises a hexagonal section 20, a threaded section 21 and a circular truncated cone section 22, the hexagonal section 20, the threaded section 21 and the circular truncated cone section 22 are integrally formed, and the overall structural strength of the dismounting bolt 4 is improved.
It has first center wire hole 23 to open on hollow ejector pin 5, it has second center wire hole 24 to open on protective sheath 8, it has third center wire hole 25 to open on dismantling bolt 4, first center wire hole 23 is corresponding with second center wire hole 24, second center wire hole 24 is corresponding with third center wire hole 25, through setting up center wire hole, the wire of the sensor 1 wiring stake of being convenient for is worn out and is penetrated, the protection wire does not receive the damage when dismouting sensor 1.
During disassembly, a straight screwdriver is inserted into the end face of the filter steel sheet 7, the filter steel sheet 7 is taken out by anticlockwise rotation, a straight screwdriver is inserted into a straight groove 13 on the end face of the seal gland 6, the seal gland 6 is taken out from the mounting base 2 by anticlockwise rotation, then the outer sleeve of the pressure gauge is separated from the mounting base 2, the transparent high-temperature heat-shrinkable tube is cut off, a lead on a wiring pile of the sensor 1 is melted and disconnected with a corresponding welding point of a mainboard by using an iron, the free end of the lead on the wiring pile of the sensor 1 sequentially penetrates through the hollow ejector rod 5 and the protective sleeve 8, the hollow ejector rod 5 and the protective sleeve 8 are connected through threads, the free end of the lead is continuously penetrated into the disassembly bolt 4, the disassembly bolt base 3 is connected with the mounting base 2 through threads, finally, the free end of the lead penetrates through the disassembly bolt 4, and the disassembly bolt 4 is connected, the dismounting bolt 4 is rotated to enable the end face of the dismounting bolt to be attached to one end face of the protective sleeve 8 of the hollow ejector rod 5, the dismounting bolt 4 is rotated clockwise, the hollow ejector rod 5 is pushed out until the sensor 1 is withdrawn from the mounting base 2, and the dismounting operation of the sensor 1 is completed.