An automatic volleyball pitching device for flooded wells

Abstract

The present application relates to an automatic volleyball throwing device for resuming production in flooded wells, and belongs to the technical field of volleyball filling equipment. It includes: a volleyball storage tank, which includes a vertically arranged cylinder with an opening at the top, and a top cover that closes the opening at the top of the cylinder, and a discharge port is provided at the bottom of the cylinder; a built-in throttling component, which is located in the volleyball storage tank, including a volleyball guide mechanism, a turntable throwing mechanism, and a volleyball funnel mechanism connected to the discharge port. The built-in throttling group of the present application uses the volleyball guide mechanism, the turntable throwing mechanism, and the volleyball funnel mechanism to cooperate with each other, and sequentially drop the volleyballs in the volleyball storage tank according to the set trajectory, and accurately control the number of single drops, so that the volleyballs fall evenly and orderly to the volleyball funnel mechanism and then fall into the pipe mouth one by one, avoiding the volleyballs from causing blockage at the pipe mouth, and improving the efficiency of volleyball delivery.

Description

Technical Field

[0001] The present application relates to the technical field of foam volleyball filling equipment, and in particular to an automatic foam volleyball throwing device for resuming production in flooded wells. Background Art

[0002] In natural gas production, as the reservoir pressure and natural gas flow rate gradually decrease, the produced water in the gas reservoir is retained in the wellbore. These liquids gather at the bottom of the well for a period of time to form a liquid column, which causes additional hydrostatic back pressure on the gas reservoir, resulting in a continuous decline in the gas well's self-flowing capacity. The negative impact of gas well water production: liquid accumulation in the wellbore, increased back pressure, decreased wellhead pressure, and serious impact on the production capacity of the gas well; drainage gas production is an effective way to solve the "gas well liquid accumulation".

[0003] In order to develop and exploit water-producing gas fields, how to drain water has become a major problem that must be solved in gas fields. Foam drainage gas production technology is one of the methods that has been used on site for many years and can effectively remove the bottom of the well. The working principle is to add a surfactant into the well as a drainage process. Surfactants are also called foaming agents. A certain amount of foaming agent is injected into the well. After the bottom of the well water contacts the foaming agent, a large amount of low-density water-containing foam is generated with the help of the stirring of the natural gas flow, which reduces the density of the liquid in the well. The liquid is carried from the bottom of the well to the ground with the air flow, achieving the purpose of removing the bottom of the well liquid.

[0004] The current foam drainage gas production process mainly injects liquid foaming agent into the well through the foaming agent filling device. This process requires special filling equipment, is cumbersome and has high economic costs. In order to adapt to the concept of unmanned operation and the need to save energy, the liquid foaming agent is solidified into a ball shape and the foam drainage gas production process is realized by directly throwing the foam ball, which can simplify the overall construction process and improve work efficiency.

[0005] However, the equipment for releasing foam balls is still imperfect. The main problem is that too many foam balls are released into the pipe mouth at one time by the foam ball releasing equipment. The accumulated foam balls reach the pipe entrance and form a symmetrical balanced structure called a "bridge", which causes the pipe mouth to be blocked. This has a great impact on the implementation and promotion of the foam ball drainage and gas production technology. Summary of the invention

[0006] The embodiment of the present application provides an automatic foam ball throwing device for resuming production in a flooded well, so as to solve the problem in the related art that the foam ball throwing equipment is prone to cause pipe blockage.

[0007] The present application embodiment provides a bubble volleyball automatic pitching device for resuming production in a flooded well, comprising:

[0008] A foam volleyball storage tank, the foam volleyball storage tank comprising a vertically arranged cylinder with an open top, and a top cover for closing the top opening of the cylinder, and a discharge port is provided at the bottom of the cylinder;

[0009] A built-in throttling component is located in the bubble volleyball storage tank, and includes a bubble volleyball guide mechanism, a turntable pitching mechanism, and a bubble volleyball funnel mechanism connected to the discharge port, which are arranged in sequence from top to bottom.

[0010] In some embodiments: the built-in throttling assembly further includes a supporting frame connecting the bubble volleyball flow guiding mechanism, the turntable ball throwing mechanism and the bubble volleyball funnel mechanism together;

[0011] The support frame comprises an upper circular ring and a lower circular ring which are coaxial and spaced apart, and a plurality of support columns which are parallel to each other and spaced apart are connected between the upper circular ring and the lower circular ring.

[0012] In some embodiments: the bubble volleyball guide mechanism comprises an upper guide inclined plate and a lower guide inclined plate arranged at intervals, wherein the upper guide inclined plate divides the inner space of the cylinder into an upper storage chamber and a lower storage chamber;

[0013] A notch connecting the upper storage chamber and the lower storage chamber is provided on the lower side of the upper guide inclined plate, and the notch faces the higher side of the lower guide inclined plate. A volleyball hole is provided on the lower side of the lower guide inclined plate.

[0014] In some embodiments: the turntable pitching mechanism includes a pitching turntable, and the pitching turntable is provided with a plurality of dividing grooves evenly distributed around the circumference and penetrating vertically;

[0015] An upper baffle plate for covering the dividing grooves is provided on the top of the pitching turntable, and a ball hole connected to one or more of the dividing grooves is provided on the upper baffle plate;

[0016] A lower stopper is provided at the bottom of the pitching turntable for blocking one or more of the separation grooves communicating with the goal hole.

[0017] In some embodiments: the turntable pitching mechanism also includes a driving mechanism for driving the pitching turntable to rotate, and the driving mechanism includes a reduction motor fixed to the top cover, and a transmission shaft connected to the output shaft of the reduction motor and extending into the cylinder body to connect to the pitching turntable.

[0018] In some embodiments: the outer periphery of the transmission shaft is provided with a coaxially arranged sleeve, the sleeve and the transmission shaft are rotatably connected via a bearing, and the upper baffle plate and the volleyball diversion mechanism are both fixedly connected to the sleeve.

[0019] In some embodiments: the lower stopper includes a fan-shaped bottom plate, and an arc-shaped side panel fixedly connected to the periphery of the fan-shaped bottom plate, the top of the arc-shaped side panel is fixedly connected to the upper baffle, and a chip discharge port is opened on the fan-shaped bottom plate.

[0020] In some embodiments: each of the dividing grooves on the pitching turntable is a rectangular structure, and the extension lines of each of the dividing grooves intersect at a point at the center of the pitching turntable, the depth and width of the dividing grooves are slightly larger than the diameter of the volleyball, and the length of the dividing grooves is larger than n times the diameter of the volleyball, where n is a positive integer ≥1.

[0021] In some embodiments: the upper baffle is a disc-shaped structure, the goal hole of the upper baffle is a fan-shaped hole arranged concentrically with the upper baffle, and the goal hole is located at one end of the forward direction of the ball pitching turntable and is provided with a plurality of coaxially arranged rollers, and the rollers are rollingly connected to the top surface of the ball pitching turntable.

[0022] In some embodiments: the bubble volleyball funnel mechanism includes a conical funnel whose diameter gradually decreases in the direction away from the turntable pitching mechanism, the bottom of the conical funnel is connected to a volleyball tube connected to the discharge port, and a downwardly inclined slide is provided on the conical surface inside the conical funnel.

[0023] The beneficial effects of the technical solution provided by this application include:

[0024] An embodiment of the present application provides an automatic bubble volleyball pitching device for resuming production in flooded wells. Since the automatic bubble volleyball pitching device for resuming production in flooded wells of the present application is provided with a bubble volleyball storage tank, the bubble volleyball storage tank includes a vertically arranged cylinder with an opening at the top, and a top cover for closing the opening at the top of the cylinder, and a discharge port is provided at the bottom of the cylinder; a built-in throttling component is located in the bubble volleyball storage tank, and includes a bubble volleyball guide mechanism, a turntable pitching mechanism, and a bubble volleyball funnel mechanism connected to the discharge port, which are arranged in sequence from top to bottom.

[0025] Therefore, the automatic bubble volleyball throwing device for flooded well resumption of production in the present application can be directly installed on the upper end of the gas production tree, and the bubble volleyball storage tank is not only used as a storage tank for storing bubble volleyballs, but also as a pressure vessel connected to the gas production tree to prevent natural gas leakage. The bubble volleyballs in the bubble volleyball storage tank are thrown into the oil pipe of the gas production tree through the built-in throttling component and enter the bottom of the gas well, and then react chemically with the accumulated liquid to generate foam. The built-in throttling group uses the bubble volleyball diversion mechanism, the turntable throwing mechanism, and the bubble volleyball funnel mechanism to cooperate with each other, and the bubble volleyballs in the bubble volleyball storage tank are sequentially dropped according to the set trajectory, and the single-time delivery quantity is accurately controlled, so that the bubble volleyballs fall evenly and orderly to the bubble volleyball funnel mechanism and then fall into the pipe mouth one by one, avoiding the bubble volleyballs from causing blockage at the pipe mouth, thereby improving the efficiency of bubble volleyball delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the structure after the cylinder is hidden in the embodiment of the present application;

[0029] Figure 3 This is a structural stereogram of the built-in throttling component in the embodiment of the present application at a first viewing angle;

[0030] Figure 4 This is a structural stereogram of the built-in throttling component in the embodiment of the present application at a second viewing angle;

[0031] Figure 5 This is a structural stereogram of the foam volleyball guide mechanism and the upper baffle in the first perspective of the embodiment of the present application;

[0032] Figure 6 This is a structural stereogram of the foam volleyball guide mechanism and the upper baffle in the second viewing angle according to the embodiment of the present application;

[0033] Figure 7 This is a schematic diagram of the structure of the embodiment of the present application in which the built-in throttling component hides the bubble volleyball guide mechanism and the upper baffle;

[0034] Figure 8 This is a schematic diagram of the structure of the pitching turntable according to an embodiment of the present application;

[0035] Fig. 9 This is a schematic diagram of the structure of the lower stopper of the embodiment of the present application;

[0036] Fig.10 This is a schematic diagram of the structure of the bubble volleyball funnel mechanism according to an embodiment of the present application.

[0037] Reference numerals:

[0038] 100, volleyball storage tank; 110, cylinder; 120, top cover; 130, feed port; 140, safety valve; 150, pressure transmitter; 160, inspection port; 170, emergency shut-off valve; 180, counter;

[0039] 200, built-in throttling assembly; 210, volleyball flow guide mechanism; 211, upper flow guide inclined plate; 212, lower flow guide inclined plate; 213, notch; 214, volleyball hole; 215, sleeve; 220, turntable pitching mechanism; 221, pitching turntable; 222, separation groove; 223, upper baffle plate; 224, goal hole; 225, lower stopper; 226, roller; 227, fan-shaped bottom plate; 228, arc-shaped side panel; 229, chip discharge port;

[0040] 230. Bubble volleyball funnel mechanism; 231. Conical funnel; 232. Slide; 233. Volleyball tube; 240. Support frame; 241. Upper ring; 242. Lower ring; 243. Support column; 250. Driving mechanism; 251. Reducer motor; 252. Transmission shaft; 300. Bubble volleyball. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] The embodiment of the present application provides an automatic bubble volleyball throwing device for resuming production in a flooded well, which can solve the problem that the bubble volleyball throwing equipment is prone to cause pipe orifice blockage.

[0043] See also Figures 1 to 4 As shown, the embodiment of the present application provides a bubble volleyball automatic pitching device for resuming production in a flooded well, comprising:

[0044] A foam volleyball storage tank 100 includes a vertically arranged cylinder 110 with an opening at the top, and a top cover 120 that closes the top opening of the cylinder 110. The top cover 120 is provided with a feed inlet 130, and a discharge port is provided at the bottom of the cylinder 110. The foam volleyball storage tank 100 can accommodate at least 5,000 foam volleyballs 300 at a time, and the diameter of the foam volleyball 300 is 40 mm ± 2 mm. The design pressure of the foam volleyball storage tank 100 is 9.8 MPa. The bottom of the cylinder 110 is fixedly connected to the top of the gas production tree, and the discharge port at the bottom of the cylinder 110 is connected to the gas production tree.

[0045] The built-in throttling assembly 200 is located in the bubble volleyball storage tank 100 and close to the bottom of the cylinder 110. The built-in throttling assembly 200 includes a bubble volleyball guide mechanism 210, a turntable pitching mechanism 220, and a bubble volleyball funnel mechanism 230 connected to the discharge port, which are arranged in sequence from top to bottom. The bubble volleyballs 300 stored in the bubble volleyball storage tank 100 fall to the bubble volleyball guide mechanism 210, the turntable pitching mechanism 220 and the bubble volleyball funnel mechanism 230 in sequence from bottom to top under the action of their own weight, and then enter the discharge port and fall into the gas production tree.

[0046] The bubble volleyball guide mechanism 210 provides a motion track for the bubble volleyballs 300 accumulated in the bubble volleyball storage tank 100 during their falling process, and controls the number of bubble volleyballs falling, so that they fall in an orderly and uniform manner, and prevents the bubble volleyballs 300 from squeezing and accumulating on the top of the turntable pitching mechanism 220, causing blockage and wear into powder. The turntable pitching mechanism 220 precisely controls the number of single shots and its own rotational movement, and the bubble volleyballs 300 falling into the turntable pitching mechanism 220 fall into the bubble volleyball funnel mechanism 230 in sequence, and the bubble volleyball funnel mechanism 230 drops the bubble volleyballs 300 into the discharge port one by one.

[0047] The automatic volleyball throwing device for flooded well recovery in the embodiment of the present application can be directly installed on the upper end of the gas tree. The volleyball storage tank 100 is not only used as a storage tank for storing the volleyball 300, but also as a pressure vessel connected to the gas tree to prevent natural gas leakage when the volleyball 300 is thrown. The volleyball 300 in the volleyball storage tank 100 is thrown into the oil pipe of the gas tree through the built-in throttling component 200 and enters the bottom of the gas well, and then reacts chemically with the accumulated liquid to generate foam, thereby achieving the purpose of removing water.

[0048] The built-in throttling component 200 uses the bubble volleyball guide mechanism 210, the turntable throwing mechanism 220, and the bubble volleyball funnel mechanism 230 to cooperate with each other, and sequentially drop the bubble volleyball 300 in the bubble volleyball storage tank 100 according to the set trajectory, and accurately control the number of bubble volleyballs 300 released at a time, so that the bubble volleyballs 300 fall evenly and orderly to the bubble volleyball funnel mechanism 230 and then fall into the pipe mouth one by one, avoiding blockage of the bubble volleyballs 300 at the pipe mouth, thereby improving the efficiency of releasing the bubble volleyballs 300.

[0049] In some alternative embodiments: See Figure 3 , Figure 4 and Figure 7As shown, the embodiment of the present application provides a bubble volleyball automatic pitching device for flooded well recovery, and the built-in throttling component 200 of the bubble volleyball automatic pitching device also includes a support frame 240 that connects the bubble volleyball flow guide mechanism 210, the turntable pitching mechanism 220 and the bubble volleyball funnel mechanism 230. The support frame 240 includes an upper circular ring 241 and a lower circular ring 242 that are coaxial and spaced apart, and a plurality of support columns 243 that are parallel to each other and spaced apart are connected between the upper circular ring 241 and the lower circular ring 242.

[0050] The embodiment of the present application utilizes a support frame 240 to connect the bubble volleyball diversion mechanism 210, the turntable pitching mechanism 220 and the bubble volleyball funnel mechanism 230 together, so that the bubble volleyball diversion mechanism 210, the turntable pitching mechanism 220 and the bubble volleyball funnel mechanism 230 are arranged in order from top to bottom to form a stable structure and positioning, and it is convenient for the bubble volleyball diversion mechanism 210, the turntable pitching mechanism 220 and the bubble volleyball funnel mechanism 230 to be assembled together and then loaded into the cylinder 110.

[0051] In some alternative embodiments: See Figures 3 to 6 As shown, the embodiment of the present application provides an automatic volleyball pitching device for flooded wells. The volleyball guide mechanism 210 of the automatic volleyball pitching device includes an upper guide inclined plate 211 and a lower guide inclined plate 212 arranged at intervals. The upper guide inclined plate 211 and the lower guide inclined plate 212 are both disc-shaped structures. The upper guide inclined plate 211 divides the internal space of the cylinder 110 into an upper storage chamber and a lower storage chamber. The upper guide inclined plate 211 is used to place most of the volleyballs 300 in the volleyball storage tank 100 in the upper storage chamber, so that the number of volleyballs 300 in the lower storage chamber does not exceed 300.

[0052] The main function of the upper guide inclined plate 211 is to control the number of the volleyball balls 300 in the upper storage chamber to not exceed 300. In addition, the weight of most of the volleyball balls 300 in the volleyball storage tank 100 is borne by the upper guide inclined plate 211. If there is no upper guide inclined plate 211, all the volleyball balls 300 in the volleyball storage tank 100 will be piled up in the lower storage chamber. On the one hand, a bridge will be formed, and the volleyball balls 300 will not fall down automatically. On the other hand, due to the heavy weight, the bottom layer of volleyball balls 300 will have serious friction with the turntable pitching mechanism 220, causing a large number of volleyball balls 300 to be ground into powder.

[0053] A notch 213 connecting the upper storage chamber and the lower storage chamber is provided on the lower side of the upper guide inclined plate 211, and the notch 213 faces the higher side of the lower guide inclined plate 212, and a volleyball hole 214 is provided on the lower side of the lower guide inclined plate 212. Since the upper guide inclined plate 211 and the lower guide inclined plate 212 are arranged in an alternating manner in the cylinder 110 and are both inclined, when the number of the volleyball balls 300 in the lower storage chamber gradually decreases, the volleyball balls 300 in the upper storage chamber enter the lower storage chamber from the notch 213 under the guidance of the upper guide inclined plate 211 for replenishment.

[0054] The foam volleyball 300 that enters the lower storage chamber continues to slide downward under the guidance of the lower guide inclined plate 212 and finally enters the volleyball hole 214. Since the size of the volleyball hole 214 is determined in advance and only one or more foam volleyballs 300 are allowed to enter at the same time, the foam volleyball 300 that fails to enter the volleyball hole 214 continues to wait outside the volleyball hole 214 in the lower storage chamber to prevent the foam volleyballs 300 from piling up and squeezing each other at the volleyball hole 214 to cause blockage and wear.

[0055] In some alternative embodiments: See Figures 3 to 8 As shown, the embodiment of the present application provides an automatic bubble volleyball pitching device for flooded well recovery, wherein the turntable pitching mechanism 220 of the automatic bubble volleyball pitching device includes a ball pitching turntable 221, on which a plurality of dividing grooves 222 evenly distributed around the circumference and penetrating vertically are provided. An upper baffle plate 223 for covering the dividing grooves 222 is provided on the top of the ball pitching turntable 221, and a ball hole 224 connecting one or more dividing grooves 222 is provided on the upper baffle plate 223.

[0056] A lower stopper 225 is provided at the bottom of the pitching turntable 221 for blocking one or more partition grooves 222 connected to the goal hole 224. The main function of the pitching turntable 221 is to control the number of balls pitched in one rotation and the speed of the balls by controlling its rotation speed. For example, each partition groove 222 of the pitching turntable 221 can accommodate two bubble volleyballs 300 at the same time. There are 20 partition grooves 222 on the pitching turntable 221 in total. The pitching turntable 221 can throw out 40 bubble volleyballs 300 in one rotation. The maximum rotation speed of the pitching turntable 221 is 10r / min, and 400 bubble volleyballs 300 can be thrown out in one minute.

[0057] The upper baffle plate 223 located on the top of the pitching turntable 221 is used to cover the dividing groove 222 on the pitching turntable 221. A goal hole 224 connected to one or more dividing grooves 222 is opened on the upper baffle plate 223. The size and orientation of the goal hole 224 are the same as the size and orientation of the volleyball hole 214 on the lower guide inclined plate 212. One or more bubble volleyballs 300 falling into the volleyball hole 214 directly enter the goal hole 224. Next, the one or more bubble volleyballs 300 entering the goal hole 224 respectively enter one or more dividing grooves 222 connected to the goal hole 224.

[0058] Since a lower stopper 225 for blocking one or more dividing grooves 222 connected to the goal hole 224 is provided at the bottom of the pitching turntable 221, the bubble volleyball 300 entering the one or more dividing grooves 222 connected to the goal hole 224 will not fall immediately due to the blocking effect of the lower stopper 225. Only after the pitching turntable 221 drives the bubble volleyball 300 to rotate and leaves the lower stopper 225, the bubble volleyball 300 located in the dividing groove 222 will fall into the bubble volleyball funnel mechanism 230 one by one under the action of its own weight.

[0059] In some alternative embodiments: See Figures 1 to 7 As shown, the embodiment of the present application provides a bubble volleyball automatic pitching device for flooded well recovery, and the turntable pitching mechanism 220 of the bubble volleyball automatic pitching device also includes a driving mechanism 250 for driving the pitching turntable 221 to rotate. The driving mechanism 250 includes a reduction motor 251 fixed to the top cover, and a transmission shaft 252 connected to the output shaft of the reduction motor 251 and extending into the barrel 110 and connected to the center of the pitching turntable 221. The reduction motor 251 includes an explosion-proof motor, a worm gear and a reducer.

[0060] A coaxially arranged sleeve 215 is sleeved on the outer periphery of the transmission shaft 252, and the sleeve 215 is rotatably connected to the transmission shaft 252 through a bearing, and the upper baffle plate 223 and the upper guide inclined plate 211 and the lower guide inclined plate 212 of the bubble volleyball guide mechanism 210 are fixedly connected to the sleeve 215. The upper baffle plate 223 and the upper guide inclined plate 211 and the lower guide inclined plate 212 of the bubble volleyball guide mechanism 210 are provided with a through hole for penetrating the sleeve 215 at their central positions, and the upper baffle plate 223 and the upper guide inclined plate 211 and the lower guide inclined plate 212 of the bubble volleyball guide mechanism 210 are respectively welded to the sleeve 215.

[0061] In some alternative embodiments: See Figures 7 to 9As shown, the embodiment of the present application provides an automatic bubble volleyball pitching device for flooded well recovery, wherein the lower stopper 225 of the automatic bubble volleyball pitching device comprises a fan-shaped bottom plate 227, and an arc-shaped side panel 228 fixedly connected to the periphery of the fan-shaped bottom plate 227, the top of the arc-shaped side panel 228 is fixedly connected to the upper baffle 223, and a chip discharge port 229 is provided on the fan-shaped bottom plate 227. The fan-shaped bottom plate 227 is used to block one or more separation grooves 222 connected to the ball hole 224, and the arc-shaped side panel 228 is used to fix the fan-shaped bottom plate 227 on the upper baffle 223.

[0062] The shape of the chip removal port 229 can be multiple circular holes, multiple square holes, multiple long holes or multiple arc holes. The chip removal port 229 can filter out the powder generated by the friction between the bubble volleyballs 300 in advance. If the powder is not filtered in advance, the powder will follow the bubble volleyballs 300 into the bubble volleyball funnel mechanism 230 and accumulate, which may cause blockage.

[0063] In some alternative embodiments: See Figures 5 to 8 As shown, the embodiment of the present application provides an automatic bubble volleyball pitching device for resuming production in flooded wells. Each dividing groove 222 on the pitching turntable 221 of the automatic bubble volleyball pitching device is a rectangular structure, and the extension lines of each dividing groove 222 intersect at a point at the center of the pitching turntable 221. The depth and width of the dividing groove 222 are slightly larger than the diameter of the bubble volleyball 300, and the length of the dividing groove 222 is greater than n times the diameter of the bubble volleyball 300, where n is a positive integer ≥ 1. The bubble volleyballs 300 are grouped in two in each dividing groove 222, and fall into the bubble volleyball funnel mechanism 230 below at the same time, and then roll to the discharge port one after the other.

[0064] The upper baffle plate 223 is a disc-shaped structure. The goal hole 224 of the upper baffle plate 223 is a fan-shaped hole arranged cocentrically with the upper baffle plate 223. The goal hole 224 is located at one end of the forward direction of the pitching turntable 221 and is provided with a plurality of coaxially arranged rollers 226. The rollers 226 are rollingly connected to the top surface of the pitching turntable 221 through a rotating shaft bracket. The rollers 226 serve as an anti-clamping and anti-blocking structure. The rollers 226 are composed of nine small bearings with an outer diameter of 22 mm, an inner diameter of 10 mm, and a width of 9 mm. When a volleyball 300 is clamped, the bearing rotates to squeeze the volleyball 300, breaking the balance, pressing the blocked volleyball 300 downward or pushing it outward to prevent the volleyball 300 from being blocked here.

[0065] In some alternative embodiments: See Figure 3 and Fig.10As shown, the embodiment of the present application provides an automatic bubble volleyball pitching device for flooded wells, wherein the bubble volleyball funnel mechanism 230 of the automatic bubble volleyball pitching device includes a conical funnel 231 whose diameter gradually decreases in the direction away from the turntable pitching mechanism 220, a volleyball tube 233 connected to the discharge port is connected to the bottom of the conical funnel 231, and a downwardly inclined slideway 232 is provided on the conical surface of the conical funnel 231. Two bubble volleyballs 300 fall from each separation groove 222 and fall into the slideway 232 of the bubble volleyball funnel mechanism 230 below at the same time, and then roll from the slideway 232 one after the other to the volleyball tube 233 and enter the discharge port.

[0066] In some alternative embodiments: See Figure 1 As shown, the embodiment of the present application provides a bubble volleyball automatic pitching device for flooded well recovery, and the cylinder 110 of the bubble volleyball automatic pitching device is also provided with a safety valve 140, a pressure transmitter 150, an inspection port 160, an emergency shut-off valve 170, and a counter 180 on the outside. The above-mentioned safety valve 140, pressure transmitter 150, emergency shut-off valve 170, and counter 180 are all connected to the control box. The inspection port 160 is used to clear the discharge port if it is blocked.

[0067] The function of the control box is: when the counter 180 does not detect the passage of the volleyball 300 for 3 seconds, a feedback signal is sent to the control box, and the control box controls the drive mechanism 250 to stop and controls the emergency shut-off valve 170 to close. When the pressure in the cylinder 110 rises very quickly, before the emergency shut-off valve 170 is closed, the pressure in the cylinder 110 has reached 8.82MPa (design pressure 9.8×safety factor 0.9), and the control box controls the safety valve 140 to automatically release the pressure to ensure the safety of the equipment. The pressure transmitter 150 is interlocked with the emergency shut-off valve 170. When the pressure transmitter 150 detects the pressure and the pressure reaches the set shut-off pressure, the emergency shut-off valve 170 is immediately closed.

[0068] How it works

[0069] An embodiment of the present application provides an automatic bubble volleyball pitching device for resuming production in flooded wells. Since the automatic bubble volleyball pitching device for resuming production in flooded wells of the present application is provided with a bubble volleyball storage tank 100, the bubble volleyball storage tank 100 includes a vertically arranged cylinder 110 with an opening at the top, and a top cover 120 for closing the top opening of the cylinder 110, and a discharge port is provided at the bottom of the cylinder 110; a built-in throttling component 200, which is located in the bubble volleyball storage tank 100, includes a bubble volleyball guide mechanism 210, a turntable pitching mechanism 220, and a bubble volleyball funnel mechanism 230 connected to the discharge port, which are arranged in sequence from top to bottom.

[0070] Therefore, the automatic bubble volleyball throwing device for flooded well recovery of production in the present application can be directly installed on the upper end of the gas tree, and the bubble volleyball storage tank 100 is not only used as a storage tank for storing the bubble volleyball 300, but also as a pressure vessel connected to the gas tree to prevent natural gas leakage. The bubble volleyball 300 in the bubble volleyball storage tank 100 is thrown into the oil pipe of the gas tree through the built-in throttling component 200 and enters the bottom of the gas well, and then reacts chemically with the accumulated liquid to generate foam.

[0071] The built-in throttling component 200 uses the bubble volleyball guide mechanism 210, the turntable throwing mechanism 220, and the bubble volleyball funnel mechanism 230 to cooperate with each other, and sequentially drop the bubble volleyball 300 in the bubble volleyball storage tank 100 according to the set trajectory, and accurately control the number of single releases, so that the bubble volleyball 300 falls evenly and orderly to the bubble volleyball funnel mechanism 230 and then falls into the pipe mouth one by one, avoiding blockage of the bubble volleyball 300 at the pipe mouth, thereby improving the release efficiency of the bubble volleyball 300.

[0072] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0073] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0074] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An automatic volleyball pitching device for resuming production in flooded wells, characterized in that: include: A foam volleyball storage tank (100), the foam volleyball storage tank (100) comprising a cylinder (110) arranged vertically and having an opening at the top, and a top cover (120) closing the opening at the top of the cylinder (110), wherein a discharge port is provided at the bottom of the cylinder (110); A built-in throttling component (200), the built-in throttling component (200) being located in the foam volleyball storage tank (100), comprising a foam volleyball flow guiding mechanism (210), a turntable ball throwing mechanism (220), and a foam volleyball funnel mechanism (230) being arranged in sequence from top to bottom and connected to the discharge port; The foam volleyball flow guiding mechanism (210) comprises an upper flow guiding inclined plate (211) and a lower flow guiding inclined plate (212) which are arranged at intervals, and the upper flow guiding inclined plate (211) divides the internal space of the cylinder (110) into an upper material storage chamber and a lower material storage chamber; A notch (213) connecting the upper material storage chamber and the lower material storage chamber is provided on a side of the upper guide inclined plate (211) with a lower height, the notch (213) facing a side of the lower guide inclined plate (212) with a higher height, and a volleyball hole (214) is provided on a side of the lower guide inclined plate (212) with a lower height.

2. The automatic volleyball throwing device for flooded well recovery as claimed in claim 1, characterized in that: The built-in throttling assembly (200) further comprises a supporting frame (240) connecting the bubble volleyball flow guiding mechanism (210), the turntable ball throwing mechanism (220) and the bubble volleyball funnel mechanism (230) together; The support frame (240) comprises an upper circular ring (241) and a lower circular ring (242) which are coaxial and spaced apart, and a plurality of support columns (243) which are parallel to each other and spaced apart are connected between the upper circular ring (241) and the lower circular ring (242).

3. The automatic volleyball throwing device for flooded well recovery as claimed in claim 1 or 2, characterized in that: The turntable ball pitching mechanism (220) comprises a ball pitching turntable (221), and the ball pitching turntable (221) is provided with a plurality of dividing grooves (222) evenly distributed around the circumference and penetrating vertically; An upper baffle (223) for covering the dividing grooves (222) is provided on the top of the pitching turntable (221); a ball hole (224) communicating with one or more of the dividing grooves (222) is provided on the upper baffle (223); A lower stopper (225) is provided at the bottom of the ball pitching turntable (221) for blocking one or more of the separation grooves (222) communicating with the goal hole (224).

4. The automatic volleyball throwing device for resuming production in a flooded well as claimed in claim 3 is characterized by: The turntable ball pitching mechanism (220) further comprises a driving mechanism (250) for driving the ball pitching turntable (221) to rotate, the driving mechanism (250) comprising a reduction motor (251) fixed to the top cover (120), and a transmission shaft (252) connected to the output shaft of the reduction motor (251) and extending into the cylinder (110) and connected to the ball pitching turntable (221).

5. The automatic volleyball throwing device for resuming production in a flooded well as claimed in claim 4 is characterized by: The outer periphery of the transmission shaft (252) is sleeved with a coaxially arranged sleeve (215), the sleeve (215) and the transmission shaft (252) are rotatably connected via a bearing, and the upper baffle (223) and the volleyball guide mechanism (210) are both fixedly connected to the sleeve (215).

6. The automatic volleyball throwing device for flooded well recovery as claimed in claim 3, characterized in that: The lower stopper (225) comprises a fan-shaped bottom plate (227) and an arc-shaped side panel (228) fixedly connected to the periphery of the fan-shaped bottom plate (227), the top of the arc-shaped side panel (228) being fixedly connected to the upper stopper (223), and a chip discharge opening (229) is provided on the fan-shaped bottom plate (227).

7. The automatic volleyball throwing device for flooded well recovery as claimed in claim 3, characterized in that: The dividing grooves (222) on the pitching turntable (221) are in a rectangular structure, and the extension lines of the dividing grooves (222) intersect at a point at the center of the pitching turntable (221). The depth and width of the dividing grooves (222) are slightly greater than the diameter of the volleyball (300), and the length of the dividing grooves (222) is greater than n times the diameter of the volleyball (300), where n is a positive integer ≥1.

8. The automatic volleyball throwing device for resuming production in a flooded well as claimed in claim 3 is characterized by: The upper baffle plate (223) is a disc-shaped structure; the goal hole (224) of the upper baffle plate (223) is a fan-shaped hole arranged cocentrically with the upper baffle plate (223); one end of the goal hole (224) located in the forward direction of the ball pitching turntable (221) is provided with a plurality of coaxially arranged rollers (226); the rollers (226) are rollingly connected to the top surface of the ball pitching turntable (221).

9. The automatic volleyball throwing device for flooded well recovery as claimed in claim 1, characterized in that: The bubble volleyball funnel mechanism (230) comprises a conical funnel (231) whose diameter gradually decreases in a direction away from the turntable pitching mechanism (220); the bottom of the conical funnel (231) is connected to a volleyball tube (233) connected to the discharge port; and a slideway (232) arranged obliquely downward is provided on the conical surface inside the conical funnel (231).

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