CN212054595U - Negative pressure type oil-gas mixed pumping pump capable of being matched with blowout prevention oil drain device - Google Patents
Negative pressure type oil-gas mixed pumping pump capable of being matched with blowout prevention oil drain device Download PDFInfo
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- CN212054595U CN212054595U CN202020117383.1U CN202020117383U CN212054595U CN 212054595 U CN212054595 U CN 212054595U CN 202020117383 U CN202020117383 U CN 202020117383U CN 212054595 U CN212054595 U CN 212054595U
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Abstract
The utility model belongs to the technical field of oil field oil well pit shaft gas prevention and associated gas recovery, concretely relates to can form a complete set use and prevent negative pressure formula oil gas pump that thoughtlessly takes out of blowout bleeder. The utility model discloses constitute by sucker rod coupling, pull rod, pressure cap, gas-tight slide valve, gas-tight valve casing, gas-tight disk seat, center tube, one-way leather cup, seat seal nipple joint, card tooth, unseal cap, draw-in groove, plunger, traveling valve, pump barrel coupling, pump barrel. The utility model discloses a recovery of oil well associated gas in pit, and solved the oil gas that has the negative pressure function and can not open when mixing the oil and gas pump and going into the well and prevent spouting bleeder, supporting ordinary striking formula bleeder cause the problem that can not prevent spouting in the well.
Description
Technical Field
The utility model belongs to the technical field of oil field oil well pit shaft gas prevention and associated gas recovery, concretely relates to can form a complete set use and prevent negative pressure formula oil gas pump that thoughtlessly takes out of blowout bleeder.
Background
At present, many oil field associated gas resources are rich, and the oil well is subjected to casing emptying at the earlier stage, so that huge waste of resources is caused. At present, associated gas recovery method is mainly carried out by adopting a mode of installing a constant pressure valve at a wellhead and an underground oil-gas mixed pump, but the constant pressure valve cannot solve the problem of gas recovery of a high-back-pressure oil well casing, the underground oil-gas mixed pump can effectively recover associated gas from a shaft, at present, the underground oil-gas mixed pump of an oil well mainly has a negative pressure type and a double-acting type, and the double-acting type also has a negative pressure structure. The mixed pumping pump adopts a negative pressure exhaust principle, the upper end of the pump is provided with the gas-proof slide valve, the gas-proof slide valve needs to be limited and fixed after being impacted by the tie of the pull rod after going into the well, the pull rod cannot move down after being fixed, the lower end of the plunger cannot accurately impact the blowout-preventing oil drain device due to the plunger connected with the lower end of the pull rod, and the blowout-preventing oil drain device cannot effectively open a channel.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can form a complete set use and prevent negative pressure formula oil gas mixed pump of blowout bleeder, aim at provides one kind and effectively prevents spouting, and has both opened and prevent spouting the bleeder, can accomplish the slide valve seat again and seal, does not influence the negative pressure formula oil gas mixed pump that mixed pump normally worked.
In order to achieve the above object, the utility model adopts the following technical scheme:
a negative pressure type oil-gas mixed pump capable of being matched with a blowout prevention oil drainer comprises a sucker rod coupling, a pull rod, a pressing cap, an air-proof sliding valve, an air-proof valve cover, an air-proof valve seat, a central pipe, a one-way leather cup, a seat seal short section, a clamping tooth, an unsealing cap, a clamping groove, a plunger, a traveling valve, a pump barrel coupling and a pump barrel; the sucker rod coupling is connected with the end head at one end of the pull rod; the pressure cap is connected with one end of the air-proof valve cover; the air-proof sliding valve is sleeved on the pull rod and is arranged in the air-proof valve cover, and a gap is formed between the air-proof sliding valve and the pull rod and is seated on the air-proof valve seat; the central pipe is sleeved outside the pull rod, and one end of the central pipe is connected with the other end of the air-proof valve cover; the air-proof valve seat is clamped between the steps of the air-proof valve cover and the central tube; one end of the seat seal short joint is connected with the other end of the central pipe; the unidirectional packing cup is fixedly connected to the outer wall of the central pipe, and the outer diameter of the unidirectional packing cup is in interference fit with the inner diameter of the setting short section; the clamping teeth are connected with the central pipe and contact with the inner wall of the seat seal short section; the deblocking cap is sleeved on the outer side wall of the other end of the pull rod; one end of the plunger is connected with the other end of the pull rod; the other end of the plunger is connected with the traveling valve; one end of the pump cylinder coupling is connected with the setting nipple, and the other end of the pump cylinder coupling is connected with the pump cylinder.
The clearance between the air-proof slide valve and the pull rod is not more than 2 mm.
The connection between the sucker rod coupling and the pull rod, between the pressing cap and the air-proof valve cover, between the central tube and the air-proof valve cover, between the clamping teeth and the central tube, between the seat short section and the central tube, between the plunger and the pull rod, between the deblocking cap and the pull rod, and between the traveling valve and the plunger is realized in a threaded connection mode.
The up-down moving distance of the air-proof slide valve is 55-65 mm.
The one-way leather cup is in an umbrella shape, and the opening of the one-way leather cup faces the sucker rod coupling; the one-way leather cups are provided with a plurality of one-way leather cups, and the whole one-way leather cups are subjected to thermal processing and then are fixed on the outer wall of the central pipe.
The number of the unidirectional leather cups is 3.
Two sides of the clamping tooth body are provided with two-way chamfers, and the chamfers are 30-50 degrees.
The chamfer angle of the clamping tooth body is 45 degrees.
And a clamping groove is formed in the inner wall of the seat seal short section, and the depth of the clamping groove is the same as the thickness of the clamping teeth.
Has the advantages that:
(1) the utility model discloses the blowout prevention bleeder, standing valve are connected down to the pump barrel, because both are conventional operation, this utility model does not explain the action process in detail. In the process that the plunger is driven to go down to the bottom, under the pushing of the mechanical force of the pull rod, the plunger pushes the blowout prevention mechanism of the blowout prevention oil drain down after going to the bottom, and an oil flow channel is effectively opened.
(2) The utility model discloses lift the plunger after opening, use and unseal the cap and push up the center tube, the card tooth goes upward, and the draw-in groove department that reachs the seat nipple joint utilizes elasticity independently to open, and is fixed to be buckled with the draw-in groove.
(3) The utility model discloses fixed back, normal production, the down stroke in-process, the liquid column effect is on preventing the gas slide valve above the pump, forms vacuum negative pressure chamber in the pump barrel, and the effect through the negative pressure makes the valve that moves about open, promotes in gaseous and liquid gets into the pump very easily. The one-way leather cup is stretched under the pressure of a small amount of liquid at the upper part to form sealing, so that the liquid is prevented from descending; during the up stroke, the liquid and gas in the upper part of the plunger push open the gas-proof slide valve to discharge from the pump barrel. The generated negative pressure is used for enhancing the air collecting and exhausting capacity of the pump.
(4) The utility model discloses the bleeder is prevented spouting in the operation of going into the pit can be supporting, plays the purpose that the well is prevented spouting, has opened inlet channel safety in production down, but negative pressure production has strengthened exhaust ability simultaneously.
The above description is only an overview of the technical solution of the present invention, and in order to clearly understand the technical means of the present invention and to implement the technical solution according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-sucker rod coupling; 2-a pull rod; 3, pressing a cap; 4-gas-tight slide valve; 5-air-tight valve cover; 6-gas-proof valve seat; 7-a central tube; 8-one-way leather cup; 9-setting a short joint; 10-clamping teeth; 11-unsealing the cap; 12-a card slot; 13-a plunger; 14-traveling valve; 15-pump barrel collar; 16-pump cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
according to the negative pressure type oil-gas mixing pump which can be matched with the blowout prevention oil drain device and is shown in the figure 1, the negative pressure type oil-gas mixing pump comprises a sucker rod coupling 1, a pull rod 2, a pressing cap 3, an air-proof sliding valve 4, an air-proof valve cover 5, an air-proof valve seat 6, a central pipe 7, a one-way leather cup 8, a seat seal short section 9, a clamping tooth 10, an unsealing cap 11, a clamping groove 12, a plunger 13, a traveling valve 14, a pump barrel coupling 15 and a pump barrel 16; the sucker rod coupling 1 is connected with the end head of one end of the pull rod 2; the pressing cap 3 is connected with one end of the air-proof valve cover 5; the air-proof slide valve 4 is sleeved on the pull rod 2 and is arranged in the air-proof valve cover 5, and a gap is arranged between the air-proof slide valve 4 and the pull rod 2 and is seated on the air-proof valve seat 6; the central pipe 7 is sleeved outside the pull rod 2, and one end of the central pipe 7 is connected with the other end of the air-proof valve cover 5; the air-proof valve seat 6 is clamped between the steps of the air-proof valve cover 5 and the central tube 7; one end of the setting nipple 9 is connected with the other end of the central tube 7; the unidirectional packing cup 8 is fixedly connected to the outer wall of the central tube 7, and the outer diameter of the unidirectional packing cup 8 is in interference fit with the inner diameter of the setting nipple 9; the clamping teeth 10 are connected with the central pipe 7 and the inner wall of the setting short section 9 is contacted; the unsealing cap 11 is sleeved on the outer side wall of the other end of the pull rod 2; one end of the plunger 13 is connected with the other end of the pull rod 2; the other end of the plunger 13 is connected with a traveling valve 14; one end of the pump cylinder coupling 15 is connected with the setting nipple 9, and the other end of the pump cylinder coupling 15 is connected with the pump cylinder 16.
When the oil pumping device is in actual use, the blowout-preventing oil drainer and the fixed valve are connected below the negative-pressure oil-gas mixed pump which can be matched with the blowout-preventing oil drainer, and then the oil pumping device is put into a well. In the process of going into the well, blowout prevention bleeder is closed, the sucker rod is connected with sucker rod coupling 1 when going into the well, the sucker rod pushes plunger 13 to go into the well to the end, the clamping tooth 10 enters the setting nipple 9 and is supported on the inner wall of the setting nipple 9 by means of self elasticity, the sucker rod coupling 1 presses down the pressing cap 3, the pressing cap 3 drives the clamping tooth 10 to go down, when the sucker rod reaches the clamping groove 12, the clamping tooth 10 is spread and fixed in the clamping groove 12, at the moment, all the weight of the sucker rod is pressed on the pressing cap 3 and transmitted to the clamping tooth 10, because the clamping tooth 10 has a chamfer downwards, the clamping tooth 10 is pushed to go down over the clamping groove 12 under the action of the weight, the blowout prevention mechanism of the blowout prevention bleeder is pushed away after. After the oil flow channel is opened, the sucker rod is lifted upwards, the plunger 13 and the unsealing cap 11 move upwards along with the oil flow channel, the unsealing cap 11 pushes the lower portion of the central tube 7 upwards to drive the clamping teeth 10 to move upwards, the clamping groove 12 reaching the setting short section 9 is automatically opened by using elasticity and is fixedly fastened with the clamping groove 12, the sucker rod is not lifted upwards after meeting resistance, the setting is completed, and the anti-impact distance is adjusted to carry out normal production. During the down stroke, the air-proof slide valve 4 is closed, the upper liquid acts on the air-proof slide valve 4, the one-way leather cup 8 is expanded under the pressure of the upper liquid to form sealing, the liquid is prevented from descending, the plunger 13 descends, no liquid exists in the pump barrel 16 to form a negative pressure space, and the liquid and the gas in the pump barrel 16 enter the plunger 13 under the action of the negative pressure; during the up stroke, the plunger 13 moves upwards to drive the liquid above the plunger 13 to jack the air-proof slide valve 4, the liquid and the air are discharged, and the oil pumping is completed by circulating the process. When the pipe column needs to be lifted, the negative pressure type oil-gas mixing pump stops working, and the device is lifted up to be lifted out of the shaft along with the oil pipe and the sucker rod.
The air-proof slide valve 4 is arranged in the air-proof valve cover 5, is sleeved on the pull rod 2, has a gap with the pull rod and is seated on the air-proof valve seat, and plays a role in one-way sealing. The outer diameter of the one-way packing cup 8 is in interference fit with the inner diameter of the setting short section 9 and is tightly attached to the surface of the one-way packing cup, so that a one-way sealing effect is achieved; the clamping teeth 10 are connected with the center 7 and cling to the inner wall of the seat seal short section 9 by means of self elasticity. The upward pushing of the plunger 13 is changed into the upward pushing of the unsealing cap 11, so that the plunger 13 is protected; a one-way packing cup 8 is used as a sealing mechanism and is in interference fit with the inner wall of the seat seal short section 9 to form sealing, the sealing mechanism can move up and down, and the sealing mechanism is matched to move up and down at a seat seal position. After normal production, the liquid above the pump acts on the one-way leather cup, and the leather cup is opened again to enhance the sealing property.
Adopt the technical scheme of the utility model, not only can effectively prevent spouting, both open moreover and prevent spouting bleeder, can accomplish the slide valve seat again and seal, do not influence the pump that thoughtlessly takes out and normally work.
Example two:
according to the negative pressure type oil-gas mixed pump which can be matched with the blowout prevention oil drain device and is shown in the figure 1, the difference from the first embodiment is that: the clearance between the air-proof slide valve 4 and the pull rod 2 is not more than 2 mm.
In actual use, the air-tight slide valve 4 can move up and down on the pull rod. In the down stroke, the upper liquid of the oil well pump acts on the air-proof slide valve 4, and because the gap between the air-proof slide valve 4 and the pull rod 2 is very small, the upper liquid cannot flow into the pump barrel 16 in a large amount, a negative pressure space is generated in the pump barrel 16, and a large pressure difference is generated between the upper liquid and the bottom of the pump barrel 16, so that the gas-liquid mixture at the bottom of the pump barrel 16 enters the pump barrel 16 under the action of the pressure difference and is discharged out of the pump barrel 16 after the upper stroke plunger 13 is lifted, and the recovery rate of associated gas reaches over 85 percent.
Example three:
according to the negative pressure type oil-gas mixed pump which can be matched with the blowout prevention oil drain device and is shown in the figure 1, the difference from the first embodiment is that: the connection between the sucker rod coupling 1 and the pull rod 2, between the pressing cap 3 and the air-proof valve cover 5, between the central pipe 7 and the air-proof valve cover 5, between the clamping tooth 10 and the central pipe 7, between the setting short section 9 and the central pipe 7, between the plunger 13 and the pull rod 2, between the deblocking cap 11 and the pull rod 2, and between the traveling valve 14 and the plunger 13 all adopt a threaded connection mode.
When the in-service use, between sucker rod coupling 1 and the pull rod 2, press cap 3 and prevent between the valve bonnet 5, between center tube 7 and the valve bonnet 5, between calorie tooth 10 and the center tube 7, between seat nipple joint 9 and the center tube 7, between plunger 13 and the pull rod 2, between deblocking cap 11 and the pull rod 2, traveling valve 14 and the plunger 13 between be connected, what all adopted is threaded connection's mode, make the utility model discloses a maintain and simple to operate.
Example four:
according to the negative pressure type oil-gas mixed pump which can be matched with the blowout prevention oil drain device and is shown in the figure 1, the difference from the first embodiment is that: the up-down moving distance of the air-proof slide valve 4 is 55-65 mm.
When the air-proof slide valve is actually used, the up-down movement distance of the air-proof slide valve 4 is 55-65mm, if the up-down movement distance is more than 65mm, in actual operation, at the beginning stage of a down stroke, the air-proof slide valve cannot be timely and downwards seated on the air-proof valve seat 6, so that the sealing is not tight, liquid flows into the pump barrel 16, and the formation of negative pressure in the pump is influenced. The effect is best when the moving distance is 60mm, and the recovery rate of associated gas reaches more than 85%.
Example five:
according to the negative pressure type oil-gas mixed pump which can be matched with the blowout prevention oil drain device and is shown in the figure 1, the difference from the first embodiment is that: the one-way leather cup 8 is in an umbrella shape, and the opening of the one-way leather cup faces the sucker rod coupling 1; the one-way packing cups 8 are provided with a plurality of one-way packing cups 8, and the one-way packing cups 8 are integrally hot-processed and then fixed on the outer wall of the central tube 7.
Preferably, 3 unidirectional leather cups 8 are arranged.
In actual use, the one-way packing cup 8 is in an umbrella shape, the opening faces the sucker rod coupling 1, the outer diameter of the one-way packing cup is in interference fit with the inner diameter of the seat seal short section, and the one-way packing cup is tightly attached to the surface of the seat seal short section to play a one-way sealing role. The plurality of unidirectional packing cups 8 are integrally fixed on the outer wall of the central tube 7 after hot processing, so that the unidirectional sealing effect is better. The number of the unidirectional packing cups 8 is 3, so that a good sealing effect can be achieved, and the cost is saved. The number of the unidirectional leather cups 8 can be increased or decreased according to actual needs.
After normal production, the liquid above the pump acts on the one-way leather cup, and the leather cup is opened again to enhance the sealing property.
Example six:
according to the negative pressure type oil-gas mixed pump which can be matched with the blowout prevention oil drain device and is shown in the figure 1, the difference from the first embodiment is that: two sides of the clamping tooth 10 body are provided with two-way chamfers, and the chamfers are 30-50 degrees.
The chamfer angle of the clamping tooth 10 body is 45 degrees.
In practical use, the clamping teeth 10 of the gas-tight slide valve seat sealing mechanism are designed to be provided with bidirectional chamfers, so that the seat sealing mechanism is pushed to move downwards by the weight of a rod column when reaching a seat sealing position, the plunger 13 is driven to move downwards to the bottom and then jacks up an oil inlet channel of the blowout prevention oil drain to produce, a central pipe 7 in the seat sealing mechanism can move upwards under the action of the upper top of the unsealing cap, the clamping teeth 10 are driven to move upwards to reach the clamping grooves and then are fixed in the clamping grooves by the aid of self elasticity, and the oil drain can be unsealed and forced to move upwards when a sucker rod works. The chamfer angle is 30-50 deg., and is best when the chamfer angle is 45 deg..
Example seven:
according to the negative pressure type oil-gas mixed pump which can be matched with the blowout prevention oil drain device and is shown in the figure 1, the difference from the first embodiment is that: and a clamping groove 12 is formed in the inner wall of the seat seal short section 9, and the depth of the clamping groove 12 is the same as the thickness of the clamping tooth 10.
When in actual use, the inner wall of the seat seal short section 9 is provided with a clamping groove 12, the depth of the clamping groove 12 is the same as the thickness of the clamping teeth 10, and the clamping teeth 10 can be guaranteed to be stably connected with the seat seal short section 9 when not working. When the latch 10 is operated, it is smoothly operated due to the presence of the chamfer.
Example eight:
according to the oil pumping method of the negative pressure type oil-gas mixed pump which can be matched with the blowout prevention oil drainer and is shown in the figure 1, the method comprises the following steps
The method comprises the following steps: connection of devices
Connecting a blowout-preventing oil drainer and a fixed valve below a negative-pressure oil-gas mixed pump which can be matched with the blowout-preventing oil drainer;
step two: go into the well
In the process of going down the well, the blowout-preventing oil drainer is closed, the sucker rod is connected with the sucker rod coupling 1 when going down the well, the sucker rod pushes the plunger 13 to go down the well to the end, the clamping tooth 10 enters the setting nipple 9, the clamping tooth 10 is supported on the inner wall of the setting nipple 9, the sucker rod coupling 1 presses the pressing cap 3 downwards, the pressing cap 3 drives the clamping tooth 10 to go downwards, when reaching the clamping groove 12, the clamping tooth 10 is spread and fixed in the clamping groove 12, at the moment, all the weight of the sucker rod is pressed on the pressing cap 3 and transmitted to the clamping tooth 10, because the clamping tooth 10 has a chamfer downwards, the clamping tooth 10 is pushed to go downwards through the clamping groove 12 under the action of the weight, until the plunger 13 is pushed back to open;
step three: lifting pumping rod
After the second step, the sucker rod is lifted, the plunger 13 and the unsealing cap 11 move upwards, the unsealing cap 11 pushes the lower part of the central tube 7 upwards to drive the clamping teeth 10 to move upwards, the clamping groove 12 of the seat seal short section 9 is automatically opened by using elasticity and is fixedly fastened with the clamping groove 12, and at the moment, the sucker rod is not lifted any more after resistance is met, seat seal is completed, and anti-impact distance production is adjusted;
step four: downstroke
The air-proof slide valve 4 is closed, the upper liquid acts on the air-proof slide valve 4, the one-way leather cup 8 is spread under the pressure of a small amount of upper liquid to form sealing, the liquid is prevented from descending, the plunger 13 descends, no liquid exists in the pump barrel 16, a negative pressure space is formed, and under the action of negative pressure, the liquid and the gas in the pump barrel 16 enter the plunger 13;
step five: upstroke
After the fourth step, the plunger 13 moves upwards to drive the liquid above the plunger 13 to jack the air-tight slide valve 4, the liquid and the air are discharged, and the fourth step is returned;
step six: recovery device
After the oil pumping is finished, the negative pressure type oil-gas mixed pumping pump of the blowout-preventing oil drainer stops working, and the device is lifted and retracted to finish the whole oil pumping process.
When the in-service use, the utility model discloses going into the well behind blowout prevention bleeder, the standing valve under the pump barrel, plunger 13 goes into the well in-process on earth, under the promotion of pull rod mechanical force, and plunger 13 pushes up the blowout prevention mechanism who prevents blowout bleeder after exploring the end down, the effectual oil stream passageway of having opened. And lifting the plunger piston after the oil flow is opened, pushing the central tube 7 upwards by using the unsealing cap 11, enabling the clamping teeth to go upwards, and automatically opening the clamping groove of the seat seal short section by using elasticity to be fixedly fastened with the clamping groove. The utility model discloses fixed back, normal production, the down stroke in-process, can form a complete set and use the liquid column effect on preventing gas slide valve 4 above the negative pressure formula oil gas mixed pump of preventing spouting bleeder, form vacuum negative pressure chamber in the pump barrel 16, the effect through the negative pressure makes the valve that moves about open, promotes gas and liquid and gets into very easily and can form a complete set and use in the negative pressure formula oil gas mixed pump of preventing spouting bleeder. The one-way leather cup 8 is stretched under the pressure of a small amount of liquid at the upper part to form sealing, so that the liquid is prevented from descending; the liquid and gas above the plunger 13 during the upstroke push open the gas slide valve 4 out of the cylinder 16. The generated negative pressure is utilized to enhance the gas receiving and exhausting capacity of the negative pressure type oil-gas mixed pump which can be matched with the blowout prevention oil drain.
The utility model discloses the bleeder is prevented spouting in the operation of going into the pit can be supporting, plays the purpose that the well is prevented spouting, has opened inlet channel safety in production down, but negative pressure production has strengthened exhaust ability simultaneously.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
The foregoing is illustrative of the preferred embodiments of the present invention, and the present invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a can form a complete set use negative pressure formula oil gas that prevents spouting bleeder thoughtlessly pumps which characterized in that: the oil pumping rod sealing device comprises a sucker rod coupling (1), a pull rod (2), a pressing cap (3), an air-proof sliding valve (4), an air-proof valve cover (5), an air-proof valve seat (6), a central pipe (7), a one-way packing cup (8), a seat sealing short section (9), a clamping tooth (10), an unsealing cap (11), a clamping groove (12), a plunger (13), a traveling valve (14), a pump cylinder coupling (15) and a pump cylinder (16); the sucker rod coupling (1) is connected with the end head at one end of the pull rod (2); the pressure cap (3) is connected with one end of the air-proof valve cover (5); the air-proof sliding valve (4) is sleeved on the pull rod (2) and is arranged in the air-proof valve cover (5), and a gap is formed between the air-proof sliding valve (4) and the pull rod (2) and is seated on the air-proof valve seat (6); the central pipe (7) is sleeved outside the pull rod (2), and one end of the central pipe (7) is connected with the other end of the air-proof valve cover (5); the air-proof valve seat (6) is clamped between the steps of the air-proof valve cover (5) and the central tube (7); one end of the setting short joint (9) is connected with the other end of the central pipe (7); the unidirectional packing cup (8) is fixedly connected to the outer wall of the central tube (7), and the outer diameter of the unidirectional packing cup (8) is in interference fit with the inner diameter of the setting short section (9); the clamping teeth (10) are connected with the central pipe (7) and the inner wall of the setting short section (9) is contacted; the unsealing cap (11) is sleeved on the outer side wall of the other end of the pull rod (2); one end of the plunger (13) is connected with the other end of the pull rod (2); the other end of the plunger (13) is connected with a traveling valve (14); one end of the pump cylinder coupling (15) is connected with the setting nipple (9), and the other end of the pump cylinder coupling (15) is connected with the pump cylinder (16).
2. The negative-pressure oil-gas mixed pump capable of being matched with the blowout-preventing oil drainer as claimed in claim 1, characterized in that: the clearance between the air-proof sliding valve (4) and the pull rod (2) is not more than 2 mm.
3. The negative-pressure oil-gas mixed pump capable of being matched with the blowout-preventing oil drainer as claimed in claim 1, characterized in that: the sucker rod coupling is characterized in that connection between the sucker rod coupling (1) and the pull rod (2), between the pressure cap (3) and the air-proof valve cover (5), between the central pipe (7) and the air-proof valve cover (5), between the clamping teeth (10) and the central pipe (7), between the seat sealing short section (9) and the central pipe (7), between the plunger (13) and the pull rod (2), between the deblocking cap (11) and the pull rod (2) and between the traveling valve (14) and the plunger (13) is realized in a threaded connection mode.
4. The negative-pressure oil-gas mixed pump capable of being matched with the blowout-preventing oil drainer as claimed in claim 1, characterized in that: the up-down moving distance of the air-proof slide valve (4) is 55-65 mm.
5. The negative-pressure oil-gas mixed pump capable of being matched with the blowout-preventing oil drainer as claimed in claim 1, characterized in that: the one-way leather cup (8) is in an umbrella shape, and the opening of the one-way leather cup faces the sucker rod coupling (1); the one-way leather cups (8) are provided with a plurality of one-way leather cups, and the one-way leather cups (8) are integrally hot-processed and then fixed on the outer wall of the central tube (7).
6. The negative-pressure oil-gas mixing pump capable of being matched with the blowout-preventing oil drainer as claimed in claim 5, characterized in that: the number of the unidirectional leather cups (8) is 3.
7. The negative-pressure oil-gas mixed pump capable of being matched with the blowout-preventing oil drainer as claimed in claim 1, characterized in that: two sides of the clamping tooth (10) body are provided with two-way chamfers, and the chamfers are 30-50 degrees.
8. The negative-pressure oil-gas mixing pump capable of being matched with the blowout-preventing oil drainer as claimed in claim 7, characterized in that: the chamfer angle of the clamping tooth (10) body is 45 degrees.
9. The negative-pressure oil-gas mixed pump capable of being matched with the blowout-preventing oil drainer as claimed in claim 1, characterized in that: and a clamping groove (12) is formed in the inner wall of the seat seal short section (9), and the depth of the clamping groove (12) is the same as the thickness of the clamping tooth (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020117383.1U CN212054595U (en) | 2020-01-19 | 2020-01-19 | Negative pressure type oil-gas mixed pumping pump capable of being matched with blowout prevention oil drain device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020117383.1U CN212054595U (en) | 2020-01-19 | 2020-01-19 | Negative pressure type oil-gas mixed pumping pump capable of being matched with blowout prevention oil drain device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212054595U true CN212054595U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020117383.1U Active CN212054595U (en) | 2020-01-19 | 2020-01-19 | Negative pressure type oil-gas mixed pumping pump capable of being matched with blowout prevention oil drain device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155955A (en) * | 2020-01-19 | 2020-05-15 | 中国石油天然气股份有限公司 | Negative-pressure oil-gas mixed pumping pump capable of being matched with blowout-prevention oil drainer and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155955A (en) * | 2020-01-19 | 2020-05-15 | 中国石油天然气股份有限公司 | Negative-pressure oil-gas mixed pumping pump capable of being matched with blowout-prevention oil drainer and method |
| CN111155955B (en) * | 2020-01-19 | 2024-05-28 | 中国石油天然气股份有限公司 | Negative pressure type oil-gas mixed pump capable of being matched with blowout preventer and method |
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