CN210317288U - Lithologic density sidewall contact device hole diameter assembly - Google Patents
Lithologic density sidewall contact device hole diameter assembly Download PDFInfo
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- CN210317288U CN210317288U CN201921284638.7U CN201921284638U CN210317288U CN 210317288 U CN210317288 U CN 210317288U CN 201921284638 U CN201921284638 U CN 201921284638U CN 210317288 U CN210317288 U CN 210317288U
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- potentiometer
- rubber cap
- hole diameter
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Abstract
The utility model discloses a lithologic density sidewall contact device hole diameter assembly, including casing, potentiometre, rubber cap, sealing head body, sealed contact pin one end is connected with the potentiometre, and the other end is connected with external equipment. The front end of the potentiometer is sleeved with a limit bushing, a parallel nut is screwed in the shell, and a locking disc spring is arranged between the parallel nut and the limit bushing; a sealing ring is arranged at the rear end of the shell, and a top ring is arranged at the front end of the sealing ring and is in a double-step shape; and a sealing boss is arranged at the position where the lead passes through the rubber cap, and the lead passes through the middle of the sealing boss. The potentiometer in the structure of the utility model is matched with the shell through the limit bush, and the matching precision is high; the rear end of the shell is of a top ring and single sealing ring structure, the pressures on the two sides of the sealing ring are the same, no pressure difference exists, and the service life and the sealing effect of the sealing ring are enhanced; the boss structure is additionally arranged at the sealing position between the lead and the rubber cap, so that the sealing property is improved.
Description
Technical Field
The utility model relates to an oil field logging technical field, especially a lithology density sidewall contact device hole diameter assembly.
Background
The logging instrument is suitable for the field of logging, can continuously scan the well wall, can transversely scan any level, and provides technical data such as vertical sections, horizontal sections, effective sections of mineshafts, deviation distances of mineshafts and the like. The sidewall contact device is an important device of a caliper logging instrument, and the caliper measurement is realized by utilizing the opening size of each backup arm of the sidewall contact device in the logging process.
In the prior art, a well diameter assembly generally has the following structure: the potentiometer comprises a shell with an oil hole, a potentiometer inserted in the shell, a rubber cap arranged at the front end of the shell, and a connecting cap used for protecting and fixing the rubber cap, so that the rubber cap is prevented from being separated under the action of pressure, a sealing head body is connected to the inner side of the front end of the shell in a sliding manner, a sealing contact pin is arranged on the sealing head body, one end of the sealing contact pin is connected with the potentiometer through a wire, and the other end of the sealing contact pin penetrates through the rubber cap through a wire and is connected with external equipment.
The above structure has the following disadvantages: 1. the potentiometer is in plug fit with the clamping nut, the matching precision is poor, and the overall performance is influenced; 2. The rear end of the shell and a potentiometer pull rod of the potentiometer are sealed through two sealing rings, so that pressure difference exists between two sides of the sealing rings easily, and the service life and the sealing effect of the sealing rings are influenced; 3. the sealing between the lead and the rubber cap is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a lithology density sidewall contact device hole diameter assembly structure to solve the problem among the prior art.
The utility model discloses a realize through following technical scheme: a lithologic density sidewall contact device hole diameter assembly comprises a shell with an oil hole, a potentiometer inserted in the shell, a rubber cap arranged at the front end of the shell, a sealing head body connected with the inner side of the front end of the shell in a sliding manner, a sealing pin arranged on the sealing head body, a lead connected with the potentiometer at one end of the sealing pin and an external device at the other end of the sealing pin through the rubber cap; the method is characterized in that: the front end of the potentiometer is sleeved with a limit bushing, a parallel nut is screwed in the shell, and a locking disc spring is arranged between the parallel nut and the limit bushing; a sealing ring is arranged at the rear end of the shell, and a top ring is arranged at the front end of the sealing ring and is in a double-step shape; and a sealing boss is arranged at the position where the lead passes through the rubber cap, and the lead passes through the middle of the sealing boss.
Further: silicone grease is filled in the area between the rubber cap and the sealing head body; the back end region of the sealing head body, the interior of the potentiometer and the interior of the shell are communicated with each other and filled with hydraulic silicone oil.
Further: the back end of the potentiometer is provided with an adjusting pad.
The utility model discloses the beneficial effect of structure is: 1. the potentiometer is matched with the shell through the limiting bush, so that the matching precision is high, and the installation and the maintenance are convenient; 2. The top ring at the rear end of the shell is of a double-step supporting structure, the sealing ring on the left side of the top ring is omitted, one sealing ring is adopted, the pressures on two sides of the sealing ring are the same, no pressure difference exists, and the service life and the sealing effect of the sealing ring are enhanced; 3. the boss structure is additionally arranged at the sealing position between the lead and the rubber cap, so that the contact area between the lead and the rubber cap is increased, and the sealing property is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
fig. 2 is a schematic structural diagram of the present invention.
The sequence numbers in the figures illustrate: 1 is a connecting cap, 2 is a shell, 3 is an oil hole, 4 is a sealing cap, 5 is a rubber cap, 6 is a sealing head body, 7 is a clamping nut, 8 is a locking disc spring, 9 is a limiting bush, 10 is a potentiometer, 10-1 is a pull rod, 10-2 is an electric brush, 10-3 is a potentiometer fixing bolt, 11 is an adjusting pad, 12 is a top ring, 13 is a sealing ring, 14 is a nut, 15 is a lead, 16 is a sealing boss, 17 is a sealing pin and 18 is a locking screw.
Detailed Description
The utility model discloses shown in fig. 1-2 is the lithology density sidewall contact device hole diameter assembly of structure, including the casing 2 that has the oilhole 3, peg graft at the inside potentiometer 10 of casing, be provided with rubber cap 5 and connect cap 1 at the front end of casing, connect the cap and can prevent that rubber cap from deviating from under the effect of pressure, have seal head body 6 at the front end inboard sliding joint of casing, be provided with sealed contact pin 17 on seal head body, sealed contact pin one end is connected with the potentiometre through wire 15, the other end passes rubber cap through the wire 15 and is connected with external equipment. The front end of the potentiometer is sleeved with a limiting bush 9, and the limiting bush is inserted into the potentiometer and fastened through a potentiometer fixing bolt 10-3; a parallel nut 7 is screwed in the shell, and a locking disc spring 8 is arranged between the parallel nut and the limiting bush; a sealing ring 13 is arranged at the rear end of the shell, and a top ring 12 is arranged at the front end of the sealing ring and is in a double-step shape; and a sealing boss 16 is arranged at the position where the lead passes through the rubber cap, and the lead passes through the middle of the sealing boss.
Preferably: silicone grease is filled in the area between the rubber cap and the sealing head body; the back end region of the sealing head body, the interior of the potentiometer and the interior of the shell are communicated with each other and filled with hydraulic silicone oil.
Preferably: a pad 11 is provided at the rear end of the potentiometer.
Preferably: the top ring is matched with the lower end of the shell, the top ring and the sealing ring are matched with the shell through a sealing cap 4, and the sealing cap is fixed at the lower end of the shell through a locking screw 18.
The utility model discloses the installation of structure as follows: firstly, inserting a potentiometer into a limiting bush and fixing the potentiometer by using a screw, then inserting the potentiometer into a cavity of a shell from top to bottom, placing an adjusting pad on the lower side of the shell according to actual conditions, extending a potentiometer pull rod 10-1 out of a hole at the lower end of the shell, and installing a sealing ring on the lower side of the shell through a sealing cap; then, sequentially installing the locking disc spring and the tightening nut on the inner side of the shell; and finally, sequentially installing the sealing head body and the rubber cap on which the sealing contact pin is installed on the upper end of the shell, and fixing the sealing head body and the rubber cap by using the connecting cap in a threaded manner to complete installation. When the potentiometer is used, the right end of a potentiometer pull rod is matched with a support leg mechanism of a push arm through a nut 14, at the moment, when the push arm of the push arm operates, the pull rod is pulled to move in a reciprocating mode, an electric brush 10-2 on the pull rod 10-1 is matched with a wire coil of the potentiometer, different signal values are generated, and the signals are transmitted to an external controller through a wire.
In the use process of the structure of the utility model, the inside of the shell is filled with hydraulic silicone oil, and the inside of the rubber cap is filled with silicone grease; when the sealing ring enters the underground, the external pressure is increased, the rubber cap is pressed, the internal silicone grease transmits the pressure to the sealing head body, the sealing head body slides rightwards, a pressure is applied to the hydraulic silicone oil, the hydraulic silicone oil transmits the pressure to the left side of the sealing ring through the pull rod hole of the potentiometer and the gap of the top ring, the right side of the sealing ring is acted by the external pressure, and the pressures on the two sides of the sealing ring are the same according to the mechanical principle and can be mutually offset, so that the service life of the sealing ring is prolonged, and the sealing effect of the sealing ring is improved. In addition, the hydraulic silicone oil can improve the internal lubrication and offset the pressure on the pull rod of the potentiometer, so that the operation of the potentiometer is smooth. The potentiometer is matched with the shell through the limiting bushing, so that the matching precision is high and the installation and the maintenance are convenient compared with the existing thread matching. In addition, the boss structure is additionally arranged at the sealing position between the lead and the rubber cap, and the contact area between the lead and the rubber cap is increased due to the bending and the softness of the lead, so that the sealing property is improved.
Claims (4)
1. A lithologic density sidewall contact device hole diameter assembly comprises a shell with an oil hole, a potentiometer inserted in the shell, a rubber cap arranged at the front end of the shell, a sealing head body connected with the inner side of the front end of the shell in a sliding manner, a sealing pin arranged on the sealing head body, a lead connected with the potentiometer at one end of the sealing pin and an external device at the other end of the sealing pin through the rubber cap; the method is characterized in that: the front end of the potentiometer is sleeved with a limit bushing, a parallel nut is screwed in the shell, and a locking disc spring is arranged between the parallel nut and the limit bushing; a sealing ring is arranged at the rear end of the shell, and a top ring is arranged at the front end of the sealing ring and is in a double-step shape; and a sealing boss is arranged at the position where the lead passes through the rubber cap, and the lead passes through the middle of the sealing boss.
2. The lithologic density sidewall contact ram hole diameter assembly of claim 1, wherein: silicone grease is filled in the area between the rubber cap and the sealing head body; the back end region of the sealing head body, the interior of the potentiometer and the interior of the shell are communicated with each other and filled with hydraulic silicone oil.
3. The lithologic density sidewall contact ram hole diameter assembly of claim 1, wherein: the back end of the potentiometer is provided with an adjusting pad.
4. The lithologic density sidewall contact ram hole diameter assembly of claim 1, wherein: the rubber cap is sleeved with the connecting cap, and the connecting cap is in threaded connection with the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921284638.7U CN210317288U (en) | 2019-08-09 | 2019-08-09 | Lithologic density sidewall contact device hole diameter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921284638.7U CN210317288U (en) | 2019-08-09 | 2019-08-09 | Lithologic density sidewall contact device hole diameter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317288U true CN210317288U (en) | 2020-04-14 |
Family
ID=70129166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921284638.7U Active CN210317288U (en) | 2019-08-09 | 2019-08-09 | Lithologic density sidewall contact device hole diameter assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210317288U (en) |
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2019
- 2019-08-09 CN CN201921284638.7U patent/CN210317288U/en active Active
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