CN2173862Y - Well head assembly for sound-bomb measuring well liquid level depth - Google Patents

Abstract

The utility model relates to a well head assembly for sound bomb type well liquid level depth measurement, which comprises a single-shot type and an automatic type. The utility model mainly comprises a firing system which is composed of six firing pins (5), a cam shaft (8) which is provided with ratchet teeth, a handle (11) which is provided with a ratchet mechanism, a safety pin, etc., a front housing (3) which is provided with a rheomicrophone (1) and six cartridge chambers, a locking clip (4), etc. The utility model is characterized in that the firing pins are corresponding to bombs one by one, the utility model has no relative rotation, and the firing is absolutely accurate; besides, the utility model has little mechanical transmission and the structure is simple, and therefore, the utility model has the advantages of high reliability and easy manufacture.

Description

Well head assembly for sound-bomb measuring well liquid level depth

The utility model is a kind of sound-bomb type measuring oil well liquid level depth wellhead assembly.

In field produces, mostly adopt gunpowder sound-bomb type wellhead assembly to measure the level of oil well by the acoustical reflection principle.But because existing sound-bomb type wellhead assembly mostly can only hold a sound bullet, every survey once all will once be loaded and unloaded and be changed the bullet operation, and is very inconvenient, all the more so when especially same well need continuous several times measurement and well internal gas pressure are higher.The six running fire formula wellhead assemblies of Chu Xianing though solved the problems referred to above effectively, because structure is reasonable inadequately, phenomenons such as malfunctioning often occur pulling the trigger in recent years.For example: a kind of six running fire formula wellhead assemblies are arranged, adopted click and lever combined mechanism to realize that whenever circle bullet wheel of camshaft changes 60 degree (replacing sound bullet) and drives the dual purpose of striker percussive sound bullet.Because transmission is too much, mechanism's complexity, be difficult to the positioning accuracy of assurance sound bullet, very easily cause the damage of detent mechanism and leverage in the use, again owing to there is not effective locking mechanism, the recoil strength of sound bullet can make bullet wheel rotate, and plays flashpoint and hits the serious consequence of not ringing or damage striker because of striker departs from sound when very easily causing the next time percussion.Another kind of six running fire formula wellhead assemblies are " oil well liquid level are measured the wellhead assembly firing lock " that Chinese patent 92207912.9 is proposed.Identical substantially with a last structure, also be that a kind of single needle six plays the formula structure, the rotatable bullet wheel of a striker and one is also arranged, and different is uses the coaxial rotary type intermittent drive mechanism of being made up of the calibration positioning disk of camshaft, driven shaft, movable shifting block, interior round belt groove etc. to replace click and lever combined mechanism.Its remarkable advantage is: the bullet wheel and the firing pin absolute synchronization of rotation can not train off.But because of bullet wheel still exists, make the resistance of whole transmission mechanism too big, rotate dumbly, even change motionless.

The purpose of this utility model is the wellhead assembly that will provide a kind of sound-bomb type measuring oil well liquid level depth to use, and it not only once can adorn six sounding bullets, and has and pull the trigger performance accurately and reliably.

The purpose of this utility model is achieved in that in the trigger system of wellhead assembly, in order to ensure the accuracy of percussion, adopted pin bullet corresponding structure (being that six pins six play the formula structure in an embodiment), there is not rotatable bullet wheel, camshaft whenever rotates a circle, and six equally distributed strikers will be driven one by one to hit and ring each self-corresponding sound bullet.Because of its differential gear at intermittence that does not have 1:6, so simple in structure, reliability is high.Only pull the trigger a sound bullet for making each operation, avoid double hit, the operating grip of camshaft has adopted click to add spacing structure, all wants earlier handle reversing 60 degree are just being changeed 60 degree again during so each operation, just can make camshaft rotation 60 degree and drive a striker and hit the bullet that rings its correspondence.Certainly, may not be designed to six and play the formula structures, also all be fine greater or less than the structure of six bullets.But from reduced volume and actual needs, Ying Yiliu bullet structure is advisable.

The wellhead assembly that a kind of sound-bomb type measuring oil well liquid level depth provided by the utility model is used has the following advantages: in its trigger system, six strikers are corresponding one by one with six sound bullets, do not relatively rotate, thereby striker can absolutely accurate ground hit on the flashpoint of sound bullet, guaranteed the accuracy of pulling the trigger; Simultaneously, camshaft also need not to have differential gearing at the intermittence function of 1:6 again, only need drive six equally distributed strikers one by one and get final product in the rotation in one week, so reliability height not only, structure is also simple, and handling ease.

The utility model is described in further detail below in conjunction with drawings and Examples.

Accompanying drawing 1 is the positive view of the wellhead assembly used according to a kind of sound-bomb type measuring oil well liquid level depth that the utility model proposes.

Accompanying drawing 2 is its partial sectional views along the A-A line.

By accompanying drawing 1 and accompanying drawing 2 as can be known, a kind of sound-bomb type measuring oil well liquid level depth of the utility model comprises by striker (5), firing pin spring (6), striker body (7), camshaft (8), rear end percussion main part that the back casing (9) of spring (14) and safety plug (15), the handle (11) that has spring (12) and ratchet (13) and cover plate (10) constitute and the procapsid that microphone (1) is housed (3) being arranged and be connected the locking clip (4) of usefulness with wellhead assembly.Its primary structure relation is: in the striker body (7) of back casing (9) the inside six strikers (5) and six firing pin springs (6) are housed, and six strikers are distributing evenly on the same circumference and corresponding one by one with the bullet (2) of six bullet halls (3a) on being contained in procapsid (3); There is an inclined-plane boss (8a) that is used for driving striker (5) inner end that is positioned at the camshaft (8) at center, and its other end then has the ratchet (8b) of six an ancient unit of weight cloth; The handle (11) that spring (12) and ratchet (13) is housed and has a locking notch (11a) just is enclosed within ratchet (8b) position of camshaft (8); At position corresponding on the sidewall of back casing (9) rear end spring (14) and safety plug (15) are housed, and back casing (9) is gone up the sector notch (9a) that also has restriction handle (a 11) rotational angle with locking notch (11a) on the handle (11).

A kind of sound-bomb type measuring oil well liquid level depth provided by the utility model with the operating principle of wellhead assembly is, camshaft (8) revolution is crossed 60 degree, just has a striker (5) top from inclined-plane boss (8a) under the promotion of firing pin spring (6) to drop down and hit the sound bullet (2) that rings its correspondence.The sound wave that blast produces passes to the down-hole by the procapsid (3) that is connected with well head, and its reflection echo is received and output by microphone (1).Only pull the trigger a sound bullet for making each operation, avoid double hit, six uniform ratchets (8b) are done in the outer end of camshaft (8), camshaft (8) is to be driven by a handle (11) that spring (12) and ratchet (13) are housed, and back casing (9) go up to also have the sector notch (9a) of restriction handle (a 11) rotational angle, so camshaft (8) can only change 60 degree during each turning handle (11).Be anti-misoperation, spring (14) and safety plug (15) are housed on the sidewall of back casing (9) rear end.Like this, handle (11) change 60 degree along clockwise direction and drive camshaft rotation 60 degree make striker (5) hit sound bullet (2) in, safety plug (15) is pushed under the effect of spring (14) in the locking notch (11a) on the handle (11), makes handle (11) locking.Want percussion this moment, must pull out safety plug (15) and handle (11) earlier and refund 60 degree to opposite direction, like this, handle (11) state that just goes out of lock, simultaneously, ratchet (13) also return back to the root of next ratchet (8b), for percussion is next time got ready.

Wherein, the chamfer length of the inclined-plane boss (8a) of camshaft (8) can be selected between several years to 360 degree in theory.But if arc length is too short, then gradient is too big, can make striker lifting difficulty, and handle is difficult to rotate; If arc length is oversize, though gradient subtracts, help the striker lifting, really again because of six strikers all are in the lifting state, the frictional resistance of handle is increased, also be unfavorable for the rotation of handle.So the chamfer length optimal selection scope of inclined-plane boss (8a) should be spent between 100 degree 60.The length of the sector notch (9a) on the back casing (9), it is suitable to be limited in 60 degree in theory with the maximum rotation angle of handle (11), but in reality dress system, for the convenience of processing and operating, should be greater than 60 degree, but must not greater than 120 the degree (otherwise double hit can take place), so and its optimal selection scope should 65 spend to 75 the degree between.As crossing is not six running fire structures, and then the angle at above two places should be adjusted accordingly.

Claims (3)

1, a kind of sound-bomb type measuring oil well liquid level depth wellhead assembly, striker (5), firing pin spring (6), striker body (7) and camshaft (8) are equipped with in the inside of its back casing (9), camshaft (8) stretches out an end of outside and is adorning a handle (11) of being with spring (12), ratchet (13), the rear end of back casing (9) also has spring (14), safety plug (15) and cover plate (10), they are connected on the procapsid (3) that microphone (1) is housed by locking clip (4), it is characterized in that:

A. have the strikers (5) in six weeks that evenly distribute in the striker body (7), and corresponding one by one with the center of six bullet halls (3a) on the procapsid (3);

B. there is an inclined-plane boss (8a) that is used for driving striker (5) camshaft (8) inner end, and its other end then has six uniform ratchets (8b);

C., the handle (11) that spring (12) and ratchet (13) is housed and has a locking notch (11a) is enclosed within ratchet (8b) position of camshaft (8);

D. spring (14) and safety plug (15) are equipped with in the position corresponding with handle (11) locking notch (11a) on the sidewall of back casing (9) rear end, and back casing (9) is gone up the sector notch (9a) that also has restriction handle (a 11) rotational angle.

2, wellhead assembly as claimed in claim 1 is characterized in that: the chamfer length of the inclined-plane boss (8a) of camshaft (8) can be selected between several years to 360 degree, but the optimal selection scope should be spent between 100 degree 60.

3, wellhead assembly as claimed in claim 1, it is characterized in that: the length of the sector notch (9a) on the housing (9) should be limited in the maximum rotation angle of handle (11) 60 spend to 120 the degree between be advisable, and its optimal selection scope should 65 spend to 75 the degree between.

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