A quick connecting device for self-locking liquid level tester

Abstract

The application relates to the technical field of oil well liquid level testing devices, and discloses a self-locking liquid level tester quick connecting device, which comprises a pipeline, a connecting flange is fixedly connected to the top of the pipeline, a connecting mechanism is installed at the top of the connecting flange, and a liquid level tester is installed at the top of the connecting mechanism; the connecting mechanism comprises a connecting shell, four equidistantly-distributed mounting blocks are fixedly connected to the lower portion of the outer side of the connecting shell, a movable block is rotatably connected to the outer side of the mounting block, a fixed claw is fixedly connected to the side, away from the connecting shell, of the movable block, and a sealing ring is fixedly connected to the bottom end of the connecting shell. Through cooperation of the connecting flange, the connecting shell, the mounting blocks, the movable block, the fixed claw and the limiting sleeve, the self-locking liquid level tester quick connecting device can conveniently connect the liquid level tester and the casing gate of the oil pipe, the device can be installed and dismounted by one person, and the labor input is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to a self-locking liquid level tester quick connecting device in the technical field of oil well liquid level testing. BACKGROUND

[0002] In the process of oil well exploitation, the liquid level of the oil well is usually measured periodically, a liquid level tester is fixed to a casing gate through screw connection or clamp connection, the liquid level tester is tightly fastened to the casing gate through the clamp or screw connection device, and thus the liquid level tester can measure the oil level in the oil well.

[0003] The existing screw connection or clamp connection mode needs cooperation of two persons, a pipe wrench or a sleeve wrench is used, one person holds the liquid level tester to align the casing gate during operation, the other person installs the clamp, uses the sleeve wrench to fasten the bolt, and can only start the test operation after the installation is completed; after the test is completed, the clamp and the liquid level tester are removed by the two persons, which is time-consuming and laborious and low in efficiency, therefore, the application provides the self-locking liquid level tester quick connecting device. SUMMARY

[0004] In view of the defects of the prior art, the self-locking liquid level tester quick connecting device is provided, and the problem that two persons are needed to jointly assist in installing and dismounting the liquid level tester, which is time-consuming and laborious and low in efficiency, is solved.

[0005] To achieve the above object, the following technical scheme is adopted: a self-locking liquid level tester quick connecting device, comprising a pipeline, a connecting flange is fixedly connected to the top of the pipeline, a connecting mechanism is installed on the top of the connecting flange, and a liquid level tester is installed on the top of the connecting mechanism.

[0006] The connecting mechanism comprises a connecting shell, four equidistantly distributed mounting blocks are fixedly connected to the outer side of the lower part of the connecting shell, movable blocks are rotatably connected to the outer side of the mounting blocks, fixed claws are fixedly connected to the side, away from the connecting shell, of the movable blocks, a sealing ring is fixedly connected to the bottom end of the connecting shell, four equidistantly distributed stop blocks are fixedly connected to the top of the sealing ring, and a limiting outer sleeve is threadedly connected to the middle part of the outer side of the connecting shell.

[0007] Preferably, the liquid level tester is threadedly connected to the inside of the connecting shell, and the four fixed claws are clamped between the inner side of the fixed claws and the outer side of the connecting flange.

[0008] Preferably, the four fixed claws away from the connecting shell are attached to the inner side of the limiting outer sleeve, and the inner side of the stop blocks is fixedly connected to the bottom of the outer periphery of the connecting shell.

[0009] Preferably, the sealing ring bottom and the connecting flange top are in close contact, and the stopper is arranged between the connecting shell and the fixing claw.

[0010] Preferably, the fixing claw is in any one of L-shaped, C-shaped, V-shaped or S-shaped.

[0011] Preferably, two handles are fixedly connected outside the limiting sleeve, and insulating rubber is sleeved outside the handles.

[0012] A use method of a quick connecting device of a self-locking liquid level tester, comprising the following steps:

[0013] Step one: when the device is used to measure the liquid level of an oil well, first assemble and align the liquid level tester and the connecting shell, and then perform subsequent installation after reaching the test site;

[0014] Step two: after reaching the test site, first align the liquid level tester and the sleeve gate inside the connecting flange, and then spread open the four fixing claws outside the connecting shell and buckle them outside the connecting flange at the top of the pipeline;

[0015] Step three: the worker rotates the handle to drive the limiting sleeve to rotate outside the connecting shell, at this time the limiting sleeve will rotate and move downward at the same time, until the limiting sleeve inserts the fixing claws buckled outside the connecting flange into the inside of the limiting sleeve, and then fixes the fixing claws inside the limiting sleeve, and then fixes the liquid level tester on the sleeve gate, facilitating the liquid level measurement of the liquid level tester;

[0016] Step four: after the test is completed, the worker only needs to rotate the handle in the opposite direction to drive the limiting sleeve to rotate, and then make the limiting sleeve slowly move upward along the outside of the connecting shell, at the same time the limiting sleeve and the fixing claws will also slowly separate, thereby making the fixing claws escape from the limiting locking state, and then the worker can disengage the four fixing claws and the connecting flange, and take down the liquid level tester from the sleeve gate in the pipeline for the measurement of the liquid level of the next oil well.

[0017] Preferably, the assembly mode of the liquid level tester and the connecting shell in step one is a screwing mode, and the liquid level tester is conveniently and quickly connected and fixed with the connecting mechanism through the cooperation of the external threads distributed outside the liquid level tester and the internal threads distributed inside the connecting shell.

[0018] Preferably, the four fixing claws in step two are clamped around the edge of the connecting flange through the action of gravity, and only need to cooperate the arc slope at the bottom of the fixing claw with the top of the connecting flange when placed, so that the four fixing claws can be easily spread open and fall down through the downward pressure, and then buckled outside the connecting flange.

[0019] Preferably, when the fixing claw in step three is L-shaped, the liquid level tester is fixed on the sleeve gate of the pipeline by the structure of the L-shaped end and the clamping of the outer side and the bottom of the connecting flange, when the fixing claw is V-shaped, the bottom and the outer side of the connecting flange are clamped and fixed through the bottom bevel part of the V-shaped, when the fixing claw is C-shaped, the outer side of the connecting flange is clamped and fixed through the slot part of the C-shaped, when the fixing claw is S-shaped, the outer side and the bottom of the connecting flange are clamped and fixed through the notch part on one side of the S-shaped bottom.

[0020] The application provides a self-locking liquid level tester quick connecting device.

[0021] 1、The self-locking liquid level tester quick connecting device can conveniently connect the liquid level tester and the sleeve gate of the oil pipe by the cooperation of the connecting flange, the connecting shell, the mounting block, the movable block, the fixing claw and the limiting sleeve, so that one person can install and disassemble the device for use, and the labor input is reduced.

[0022] 2、When the liquid level tester and the flange on the sleeve gate are connected, the four fixing claws can be used to realize the quick buckling and separation of the fixing claw and the connecting flange under the action of gravity, so that the self-locking liquid level tester quick connecting device can conveniently disassemble and assemble the connecting flange on the sleeve gate, and the working efficiency of the device is improved.

[0023] 3、The four fixing claws and the connecting shell replace the traditional threaded connection structure, so that the device can adapt to higher strength pressure oil pipe test work, avoid the problem that the threaded connection structure is damaged or the connection stability is reduced due to the wear between threads and high pressure during use, and improve the service life of the connecting device.

[0024] 4、The device can adapt to most oil well liquid level test work by selecting different shapes of the fixing claw and the connecting flange of the sleeve gate according to the predetermined model of the sleeve gate during oil well construction. DETAILED DESCRIPTION

[0025] Figure 1 It is a perspective view of the application;

[0026] Figure 2 It is a schematic view of the internal structure of the limiting sleeve of the application;

[0027] Figure 3 It is a schematic view of the V-shaped fixing claw structure of the application;

[0028] Figure 4 It is a schematic view of the C-shaped fixing claw structure of the application;

[0029] Figure 5It is a structure diagram of the S-shaped fixed claw of the application.

[0030] Wherein, 1, pipeline; 2, connecting flange; 3, connecting mechanism; 301, connecting shell; 302, mounting block; 303, movable block; 304, fixed claw; 305, sealing ring; 306, stop block; 307, limiting sleeve; 308, handle; 4, liquid level tester. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the description of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0032] Embodiment:

[0033] Please refer to the accompanying drawings of the application Figure 1 - the accompanying drawings of the application Figure 5 The embodiment of the application provides a quick connecting device of a self-locking liquid level tester, which comprises a pipeline 1. The pipeline 1 is connected with an oil well pipeline, so that the casing gate can be conveniently installed, and the height of the liquid level in the oil well pipeline can be conveniently tested. A connecting flange 2 is fixedly connected to the top of the pipeline 1. The connecting flange 2 can be conveniently clamped with a connecting mechanism 3, so that a liquid level tester 4 and the connecting flange 2 are connected and fixed through the connecting mechanism 3. The connecting mechanism 3 is installed on the top of the connecting flange 2. The connecting mechanism 3 is used for quickly installing the liquid level tester 4 and quickly connecting the liquid level tester 4 and the connecting flange 2. The liquid level tester 4 is installed on the top of the connecting mechanism 3. The liquid level in the oil well is measured through the liquid level tester 4.

[0034] The connecting mechanism 3 comprises a connecting shell 301, four installation blocks 302 are fixedly connected to the outer side of the lower part of the connecting shell 301 at equal intervals, movable blocks 303 are rotatably connected to the outer side of the installation blocks 302, fixed claws 304 are fixedly connected to the side of the movable blocks 303 away from the connecting shell 301, in the initial state of the device, the four fixed claws 304 can swing and open through the installation blocks 302 and the movable blocks 303, and among the four installation blocks 302, when the installation blocks 302 are in V-shaped and L-shaped, the bottom of the fixed claws 304 is provided with an inclined slot, the inclined slot gradually inclines upward in the direction of the connecting shell 301, the liquid level tester 4 and the sleeve gate inside the connecting flange 2 are aligned, then the four fixed claws 304 outside the connecting shell 301 are pried open and buckled outside the connecting flange 2 at the top of the pipeline 1, the four fixed claws 304 are clamped around the edge of the connecting flange 2 through the action of gravity, and when placed, only the arc-shaped slope provided at the bottom of the fixed claws 304 and the top of the connecting flange 2 need to be matched, so that the four fixed claws 304 can be easily pried open and fallen down through the downward pressure, and then buckled outside the connecting flange 2. At the same time, the upper side of the L-shaped fixed claw 304 is also provided with an inclined slot, when the connecting device is disassembled, the device is only lifted upward with force, the four fixed claws 304 can be quickly pried open and moved upward and separated from the connecting flange 2 through the cooperation of the inclined slot and the connecting flange 2, the bottom end of the connecting shell 301 is fixedly connected with a sealing ring 305, the top of the sealing ring 305 is fixedly connected with four equally distributed stop blocks 306, one side of the stop block 306 can provide support to the inner side of the fixed claw 304, so that after the fixed claw 304 is limited and fixed, the stable clamping between the fixed claw 304 and the connecting flange 2 cannot be maintained, through the joint action of the stop block 306 and the limiting sleeve 307, the fixed claw 304 is abutted against the inner side of the device, so that after the fixed claw 304 is limited and fixed, the fixed claw 304 cannot shake, at the same time, the stop block 306 can also limit the activity range of the fixed claw 304, so that when the bottom of the fixed claw 304 contacts the top edge of the connecting flange 2, the inclined slot at the bottom of the fixed claw 304 will be in an inclined state with the top of the fixed claw 304, so that when the device is pressed downward, the four fixed claws 304 can be opened and buckled outside the connecting flange 2, a limiting sleeve 307 is screw-connected to the middle of the outer side of the connecting shell 301, the worker rotates the handle 308 to drive the limiting sleeve 307 to rotate on the outer side of the connecting shell 301, at this time, the limiting sleeve 307 will rotate while moving downward, until the limiting sleeve 307 inserts the fixed claw 304 buckled outside the connecting flange 2 into the inside of the limiting sleeve 307, the fixed claw 304 is limited and fixed in the inside of the limiting sleeve 307, then the liquid level tester 4 is fixed on the sleeve gate, and at this time, the sealing ring 305 is in close contact with the top of the connecting flange 2, so that the inside of the device is sealed, avoiding the leakage or leakage when measuring the liquid level in the oil well, facilitating the liquid level measurement of the liquid level tester 4.

[0035] The liquid level tester 4 is threadedly connected at the bottom inside the connecting shell 301, so that the liquid level tester 4 and the connecting device can be detachably assembled, so that the liquid level tester 4 can be individually removed from the connecting device when idle. The four fixed claws 304 are clamped between the inside of the four fixed claws 304 and the outside of the connecting flange 2. The fixed claws 304 and the connecting flange 2 are clamped and fixed, and the limiting sleeve 307 limits the fixed claws 304, so that the four fixed claws 304 can be tightly fixed on the outside of the connecting flange 2, and then the liquid level tester 4 and the sleeve gate in the pipeline 1 are aligned and installed, facilitating the measurement of the liquid level in the oil pipe.

[0036] The four fixed claws 304 are in close contact with the inside of the limiting sleeve 307 away from the connecting shell 301, and the four fixed claws 304 are limited between the limiting sleeve 307 and the stop block 306, and then the four fixed claws 304 are limited and fixed, so that the connecting device can be stably clamped and fixed with the connecting flange 2. The stop block 306 is fixedly connected to the outer periphery of the connecting shell 301 at the bottom, so that the stop block 306 does not press the sealing ring 305, and at the same time can support the sealing ring 305 after the device and the sleeve gate of the oil pipe are connected, to ensure the close contact between the sealing ring 305 and the connecting flange 2.

[0037] The sealing ring 305 is in close contact between the bottom of the sealing ring 305 and the top of the connecting flange 2, and the sealing environment is formed between the connecting mechanism 3 and the pipeline 1 through the cooperation between the sealing ring 305 and the connecting flange 2, to avoid the leakage or leakage of crude oil in the oil well. The stop block 306 is arranged between the connecting shell 301 and the fixed claw 304, so that the stop block 306 can cooperate with the limiting sleeve 307 to limit and fix the fixed claw 304, and then the four fixed claws 304 can be kept in a folded state, and then tightly clamped and fixed on the outside of the connecting flange 2, to realize the non-direct contact locking between the device and the connecting flange 2. When the device is subjected to the gas pressure in the oil well, the connecting mechanism 3 can bear the force through the four fixed claws 304, to avoid that the threaded structure of the device directly bears the pressure from the inside of the oil pipe, so that compared with the traditional connecting device, the threaded structure on the connecting mechanism 3 will not be damaged prematurely, and the pressure is borne by the four fixed claws 304, so that the connecting mechanism 3 can adapt to higher pressure strength of the oil pipe test work, and greatly prolong the service life of the device.

[0038] The shape of the fixed claw 304 is any one of L-shaped, C-shaped, V-shaped or S-shaped, but is not limited to these shapes. Different shapes of the fixed claw 304 and the connecting flange 2 on the sleeve gate can be selected according to the predetermined model of the sleeve gate opening during the construction of the oil well, to improve the diversity and adaptability of the device, which can adapt to most oil well liquid level test work.

[0039] Two handles 308 are fixedly connected outside the limiting sleeve 307, the handles 308 are sleeved with insulating rubber on the outside, the limiting sleeve 307 can be conveniently rotated and moved through the handles 308, so that the connection and disassembly of the device are realized, meanwhile, the handles 308 are wrapped with insulating rubber, so that the hands are not abraded during the high-strength test work, and the handles 308 can be prevented from being interfered by static electricity to a certain extent.

[0040] A use method of the quick connecting device of the self-locking liquid level tester, comprising the following steps:

[0041] Step one, when the device is used to measure the liquid level of the oil well, first, the liquid level tester 4 and the connecting shell 301 are assembled in alignment, and then subsequent installation is performed after reaching the test site;

[0042] Step two, after reaching the test site, first, the liquid level tester 4 and the sleeve gate inside the connecting flange 2 are aligned, and then the four fixing claws 304 outside the connecting shell 301 are pried open and buckled outside the connecting flange 2 at the top end of the pipeline 1;

[0043] Step three, the worker rotates the handle 308 to drive the limiting sleeve 307 to rotate outside the connecting shell 301, at this time, the limiting sleeve 307 rotates and moves downward at the same time, until the limiting sleeve 307 inserts the fixing claws 304 buckled outside the connecting flange 2 into the inside of the limiting sleeve 307, the fixing claws 304 are limited and fixed inside the limiting sleeve 307, and then the liquid level tester 4 is fixed on the sleeve gate, so that the liquid level tester 4 can conveniently measure the liquid level;

[0044] Step four, after the test is completed, the worker only needs to reversely twist the handle 308 to drive the limiting sleeve 307 to rotate, and then the limiting sleeve 307 slowly moves upward along the outside of the connecting shell 301, at the same time, the limiting sleeve 307 and the fixing claws 304 are also slowly separated, so that the fixing claws 304 are out of the limiting state, and then the worker can disengage the four fixing claws 304 and the connecting flange 2, and take down the liquid level tester 4 from the sleeve gate inside the pipeline 1 to measure the liquid level of the next oil well.

[0045] The assembly mode of the liquid level tester 4 and the connecting shell 301 in step one is a screwing mode, the liquid level tester 4 is conveniently and quickly connected and fixed with the connecting mechanism 3 through cooperation of the external threads distributed outside the liquid level tester 4 and the internal threads distributed inside the connecting shell 301.

[0046] The four fixed claws 304 in step two are around the edge of the connecting flange 2 by the action of gravity, and only need to cooperate with the arc slope at the bottom of the fixed claw 304 and the top of the connecting flange 2 when placed, so that the four fixed claws 304 can be easily pried open and fall down by the downward force, and then buckled on the outside of the connecting flange 2.

[0047] When the fixed claw 304 in step three is L-shaped, the liquid level tester 4 is fixed on the sleeve knife inside the pipeline 1 by the structure of the L-shaped end and the outside and bottom of the connecting flange 2, when the fixed claw 304 is V-shaped, the bottom and outside of the connecting flange 2 are clamped and fixed by the bottom bevel part of the V-shaped, when the fixed claw 304 is C-shaped, the outside of the connecting flange 2 is clamped and fixed by the slot part of the C-shaped, when the fixed claw 304 is S-shaped, the outside and bottom of the connecting flange 2 are clamped and fixed by the notch part on one side of the S-shaped bottom.

[0048] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A quick coupling device for a self-locking liquid level tester comprising a pipe (1), characterized in that, The pipeline (1) top fixedly connected with connecting flange (2), the connecting flange (2) top installation has connecting mechanism (3), the connecting mechanism (3) top installation has liquid level tester (4); The connecting mechanism (3) includes a connecting housing (301), four equidistantly distributed mounting blocks (302) are fixedly connected to the outer side of the lower part of the connecting housing (301), the outer side of the mounting block (302) is rotatably connected with a movable block (303), the side away from the connecting housing (301) of the movable block (303) is fixedly connected with a fixed claw (304), the bottom end of the connecting housing (301) is fixedly connected with a sealing ring (305), the top of the sealing ring (305) is fixedly connected with four equidistantly distributed stop blocks (306), and the outer side of the middle of the connecting housing (301) is threadedly connected with a limiting outer sleeve (307); The outer side of the handle (308) is provided with insulating rubber; The liquid level tester (4) is threadedly connected inside the connecting housing (301), and the inner side of the four fixed claws (304) and the outer side of the connecting flange (2) are clamped; The bottom of the sealing ring (305) and the top of the connecting flange (2) are fitted, and the stop block (306) is arranged between the connecting housing (301) and the fixed claw (304); Rotating the handle (308) drives the limiting outer sleeve (307) to rotate on the outer side of the connecting housing (301), at this time the limiting outer sleeve (307) will rotate and move downward at the same time, until the limiting outer sleeve (307) inserts the fixed claw (304) clamped on the outer side of the connecting flange (2) into the inside of the limiting outer sleeve (307), and the fixed claw (304) is limited and fixed in the inside of the limiting outer sleeve (307).

2. The quick connect device for a self-locking liquid level tester of claim 1, wherein, The side away from the connecting housing (301) of the four fixed claws (304) and the inner side of the limiting outer sleeve (307) are fitted, and the inner side of the stop block (306) is fixedly connected to the bottom of the outer periphery of the connecting housing (301).

3. The quick connect device for a self-locking liquid level test instrument of claim 1, wherein, The shape of the fixed claw (304) is any one of L-shaped, C-shaped, V-shaped or S-shaped.

4. A method of using a quick connect device for a self-locking liquid level tester, the method comprising: The self-locking liquid level tester quick connecting device according to any one of claims 1-3 comprises the following steps: Step one, when the device is used to measure the liquid level of the oil well, first assemble the liquid level tester (4) and the connecting housing (301) in alignment, and then install the subsequent installation after reaching the test site; Step two, after reaching the test site, first align the sleeve gate inside the liquid level tester (4) and the connecting flange (2), then spread the four fixed claws (304) outside the connecting housing (301) and clamp them on the outer side of the connecting flange (2) at the top of the pipeline (1). Step three, workers at this time rotate the handle (308) drive the limit sleeve (307) in the outside of the connecting shell (301) rotation, at this time the limit sleeve (307) will rotate while moving down, until the limit sleeve (307) will be inserted into the inside of the fixed jaw (304) outside the connecting flange (2), the fixed jaw (304) is limited to be fixed in the limit sleeve (307) inside, and then the liquid level tester (4) is fixed on the sleeve gate, which is convenient for the liquid level tester (4) to measure the liquid level; Step four, after the test is completed, workers only need to reverse the handle (308) drive the limit sleeve (307) rotation, and then make the limit sleeve (307) slowly move up along the outside of the connecting shell (301), at the same time, the limit sleeve (307) and the fixed jaw (304) will also slowly separate, so that the fixed jaw (304) is out of the limit locking state, then the workers can move the four fixed jaw (304) and the connecting flange (2) apart, and take the liquid level tester (4) from the sleeve gate in the pipeline (1), and measure the next oil well liquid level.

5. The method of using a quick connect device for a self-locking liquid level tester of claim 4, wherein, The assembly mode of the liquid level tester (4) and the connecting shell (301) in step one is screwing, which cooperates the external threads distributed outside the liquid level tester (4) and the internal threads distributed inside the connecting shell (301), so as to conveniently and quickly connect and fix the liquid level tester (4) and the connecting mechanism (3).

6. The method of using a quick connect device for a self-locking liquid level tester of claim 4, wherein, The four fixed jaws (304) in step two are clamped around the edge of the connecting flange (2) through the action of gravity, and only need to cooperate the arc slope at the bottom of the fixed jaw (304) and the top of the connecting flange (2) when placing, so that the four fixed jaws (304) can be easily opened and fallen down through the downward force, and then buckled outside the connecting flange (2).

7. The method of using a quick connect device for a self-locking liquid level tester of claim 4, wherein, When the fixed jaw (304) in step three is L-shaped, the liquid level tester (4) is fixed on the sleeve gate in the pipeline (1) through the structure of the L-shaped end and the outside and bottom of the connecting flange (2), when the fixed jaw (304) is V-shaped, the bottom and outside of the connecting flange (2) are clamped and fixed through the bottom inclined part of the V-shaped part, when the fixed jaw (304) is C-shaped, the outside of the connecting flange (2) is clamped and fixed through the slot part of the C-shaped part, when the fixed jaw (304) is S-shaped, the outside and bottom of the connecting flange (2) are clamped and fixed through the notch part on one side of the S-shaped bottom.

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