Oil field valve with early warning indication function

Abstract

The invention belongs to the technical field of oil field valves, and discloses an oil field valve with an early warning indication function, which comprises an oil field valve main body, and further comprises a mounting seat arranged in the middle of the top end of the oil field valve main body; according to the technical scheme, by arranging the recycling mechanism and the sealing assembly, when the inner cavity in the middle of the oil field valve body leaks, part of oil enters the cavity in the middle of the oil field valve body, the internal pressure is increased, and the oil can be concentrated at the bottom end of the inner cavity in the middle of the oil field valve body; when the two ends of the oil field valve body are sealed and the recovery mechanism moves in the opposite direction, the output end is released to abut against the sealing assembly to be opened, then the sealing assembly is smoothly inserted into an inner cavity in the bottom of the oil field valve body, and finally oil pressure generated by redundant oil enters the one-way valve set through the recovery mechanism to flow back into the two sides of the oil field valve body in a one-way mode. The purpose of automatically recycling the oil body is achieved, and resource waste is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of oilfield valves, and specifically relates to an oilfield valve with a warning indication function. Background Technique

[0002] Oilfield valves are indispensable key equipment in the oilfield exploitation and transportation system, and their performance directly affects the safety and efficiency of oilfield production. When a high-precision pressure sensor is built into the oilfield valve to monitor the pipeline pressure in real time, when there is a leakage between the inside of the valve and the pipeline, the pressure will change violently, triggering an audible and visual alarm or remote signal transmission to avoid equipment damage or safety accidents caused by pressure leakage.

[0003] When the existing warning indication equipment warns of leakage of the oilfield valve, it is necessary to disassemble and repair the valve position. However, due to the leakage at the valve position, oil will remain at the valve stem position. Therefore, when the valve stem is disassembled for repair, some oil will be directly wasted, resulting in a waste of oil resources. Therefore, it needs to be improved. Summary of the Invention

[0004] To solve the problems raised in the above background technique, the invention provides an oilfield valve with a warning indication function, which has the advantage of facilitating the recovery of leaked oil.

[0005] To achieve the above object, the invention provides the following technical solution: An oilfield valve with a warning indication function, including an oilfield valve main body, and further including: a mounting seat, which is arranged in the middle of the top end of the oilfield valve main body; a valve assembly, which is arranged in the middle of the inner cavity of the oilfield valve main body; a plugging assembly, which is arranged in the inner cavities on both sides of the oilfield valve main body; a driving assembly, which is arranged inside the oilfield valve main body and is located at the inner end of one side of the plugging assembly; a recovery mechanism, which is arranged on both sides of the bottom end of the oilfield valve main body; a sealing assembly, which is arranged on both sides of the bottom of the oilfield valve main body and is located inside the recovery mechanism; wherein, the recovery mechanism includes recovery pipes movably installed on both sides of the bottom end of the oilfield valve main body, one side of the recovery pipe is connected to the bottom of one side of the plugging assembly through a connecting frame, telescopic assemblies are arranged on both sides of the inner cavity of the recovery pipe, and a top pipe is fixedly installed at the output end of the telescopic assembly.

[0006] Preferably, a pressure warning device is arranged at the top of one side of the oilfield valve main body.

[0007] Preferably, the valve assembly includes a screw rod, a valve stem and a rotary handwheel;

[0008] The screw rod is movably sleeved inside the mounting seat, the valve stem is movably sleeved at the bottom of the screw rod, the rotary handwheel is movably sleeved on the top surface of the oilfield valve body, and the inside of the rotary handwheel is threadedly sleeved on the surface of the screw rod. A limiting partition is arranged at the bottom of the valve stem.

[0009] Preferably, the plugging assembly includes a fixed retaining ring, a plugging circular plate, a sliding frame and a limiting member;

[0010] The fixed retaining ring is fixedly installed on the inner sides of both ends of the inner cavity of the oilfield valve body, the plugging circular plate is movably installed on both sides of the inner cavity of the oilfield valve body, the sliding frame is arranged in the middle of both ends of the plugging circular plate, and the outer end of the sliding frame extends to the surface of the oilfield valve body. The inner side of one end of the sliding frame is limited and sleeved through the limiting member, and the inner side of the other end of the sliding frame is connected to the outer side of the driving assembly.

[0011] Preferably, the driving assembly includes a triangular plate, an electric telescopic rod and a linkage shaft;

[0012] The triangular plate is arranged at the inner end of one side of the sliding frame, the electric telescopic rod is arranged in the middle of one side of the oilfield valve body, the linkage shafts are arranged on both sides of the top of the electric telescopic rod, and the linkage shafts extend into the inner groove of the triangular plate.

[0013] Preferably, the sealing assembly includes a through groove, a sealing block, a first connecting rod and a second spring;

[0014] The through groove is opened on both sides of the bottom of the oilfield valve body and is located inside the recovery pipe. The sealing block is movably installed inside the through groove. The first connecting rod is arranged inside the sealing block and is located inside the oilfield valve body. The inner end of the first connecting rod is elastically connected to the inner wall of the oilfield valve body through the second spring.

[0015] Preferably, the telescopic assembly includes a telescopic tube, a movable rod and a first spring;

[0016] The telescopic tubes are arranged on both sides of the inner cavity of the recovery pipe. The movable rod is movably installed inside the telescopic tube. The bottom of the movable rod is elastically connected to the inner wall of the telescopic tube through the first spring. The top of the movable rod is fixedly connected to the top pipe.

[0017] Preferably, communication pipes are arranged on both sides inside the valve stem.

[0018] Preferably, a shielding assembly is arranged at the bottom of the valve stem and located outside the communication pipes. The shielding assembly includes a shielding plate, a second connecting rod and a first connecting spring;

[0019] The baffle is movably installed on both sides of the bottom of the valve stem. The second connecting rod is arranged at the bottom of the baffle and movably installed inside the valve stem. The second connecting rod is elastically connected to the inner wall of the valve stem through a first connecting spring.

[0020] Preferably, the outer end of the recovery pipe is communicated with the tops of both sides of the oilfield valve body through a one-way valve group. The one-way valve group includes a fixed pipe, a one-way valve stem and a second connecting spring.

[0021] The outer side of the recovery pipe is slidably connected to one end of the fixed pipe. The other end of the fixed pipe is fixedly connected to the tops of both sides of the oilfield valve body. The one-way valve stem is movably installed inside the oilfield valve body, and the one-way valve stem is located below the top end of the fixed pipe. The one-way valve stem is elastically connected to the inside of the oilfield valve body through a second connecting spring.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] Through the above technical solutions, by setting a recovery mechanism and a sealing component, when there is a leakage in the middle inner cavity of the oilfield valve body, it indicates that part of the oil enters the middle cavity of the oilfield valve body, making the internal pressure increase. And the oil will concentrate at the bottom end of the middle inner cavity of the oilfield valve body. When both ends of the oilfield valve body are sealed and the recovery mechanism moves towards each other, it will cause the output end to release and push the sealing component open. Then, when it is smoothly inserted into the bottom inner cavity of the oilfield valve body, finally, the oil pressure generated by the excess oil will enter the one-way valve group through the recovery mechanism and flow back unidirectionally to the inside of both sides of the oilfield valve body, achieving the purpose of automatic oil recovery and reducing resource waste.

[0024] By setting a plugging component and a driving component in the present invention, when the pressure warning device detects a large change in the internal cavity pressure of the oilfield valve body, that is, when there is oil leakage in the middle of the inner cavity, the driving component can be started. Through the operation of the driving component, it will drive the two plugging components to move towards each other. Then, the two plugging components can plug the cavities at both ends of the oilfield valve body when moving towards each other, so as to isolate the cavities at both ends of the oilfield valve body from the middle cavity, facilitating the subsequent recovery of the leaked oil in the middle cavity of the oilfield valve body.

[0025] By setting a recovery mechanism and a shielding component in the present invention, since there is gas in the inner cavity of the one-way valve group, when oil enters, it will squeeze the gas into the middle of the inner cavity of the oilfield valve body, making the air pressure in the inner cavity of the oilfield valve body increase. And it will push the shielding component to open upward, enabling the gas to enter the bottom cavity of the valve component. The oil at the bottom of the valve component can be squeezed at the bottom. Finally, by driving the valve component downward, the top of the recovery mechanism can support the shielding component to keep it open upward, so that the oil pressed at the bottom of the inner cavity of the valve component can flow back unidirectionally to the inner cavities at both ends of the oilfield valve body through the one-way valve group, achieving comprehensive recovery. Description of the Drawings

[0026] Figure 1 is the structural schematic diagram of the present invention;

[0027] Figure 2 is the sectional structural schematic diagram of the present invention;

[0028] Figure 3 is the partial sectional structural schematic diagram of the connecting pipe of the present invention;

[0029] Figure 4 is Figure 3 the partial enlarged structural schematic diagram at position A in

[0030] Figure 5 is Figure 3 the partial enlarged structural schematic diagram at position B in

[0031] Figure 6 is Figure 3 the partial enlarged structural schematic diagram at position C in

[0032] Figure 7 is Figure 3 the partial enlarged structural schematic diagram at position D in

[0033] Figure 8 is the sectional structural schematic diagram of the plugging component of the present invention;

[0034] Figure 9 is the structural schematic diagram of the back surface of the present invention;

[0035] Figure 10 is the structural schematic diagram of the sliding frame of the present invention;

[0036] Figure 11 is Figure 10 the partial enlarged structural schematic diagram at position E in

[0037] In the figure: 1. Oilfield valve body; 2. Mounting seat; 3. Valve assembly; 301. Screw rod; 302. Valve post; 303. Rotary handwheel; 4. Pressure warning device; 5. Limit partition; 6. Plugging assembly; 601. Fixed retaining ring; 602. Plugging circular plate; 603. Sliding frame; 604. Limiting member; 7. Driving assembly; 701. Triangular plate; 702. Electric telescopic rod; 703. Linking shaft; 8. Recovery mechanism; 801. Recovery pipe; 802. Telescopic assembly; 8021. Telescopic pipe; 8022. Movable rod; 8023. First spring; 803. Jacking pipe; 9. Sealing assembly; 901. Through groove; 902. Sealing block; 903. First connecting rod; 904. Second spring; 10. Connecting pipe; 11. Shielding assembly; 1101. Shielding plate; 1102. Second connecting rod; 1103. First connecting spring; 12. Check valve group; 1201. Fixed pipe; 1202. Check valve post; 1203. Second connecting spring; 13. Connecting frame. Specific implementation mode

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] As Figures 1 to 11 shown, the present invention provides an oilfield valve with a warning indication function, including an oilfield valve body 1, and further including: a mounting seat 2, the mounting seat 2 is arranged in the middle of the top end of the oilfield valve body 1; a valve assembly 3, the valve assembly 3 is arranged in the middle of the inner cavity of the oilfield valve body 1; a plugging assembly 6, the plugging assembly 6 is arranged in the inner cavities on both sides of the oilfield valve body 1; a driving assembly 7, the driving assembly 7 is arranged inside the oilfield valve body 1, and the driving assembly 7 is located at the inner end of one side of the plugging assembly 6; a recovery mechanism 8, the recovery mechanism 8 is arranged on both sides of the bottom end of the oilfield valve body 1; a sealing assembly 9, the sealing assembly 9 is arranged on both sides of the bottom of the oilfield valve body 1, and the sealing assembly 9 is located inside the recovery mechanism 8; wherein, the recovery mechanism 8 includes a recovery pipe 801 movably installed on both sides of the bottom of the oilfield valve body 1, one side of the recovery pipe 801 is connected to the bottom of one side of the plugging assembly 6 through a connecting frame 13, telescopic assemblies 802 are arranged on both sides of the inner cavity of the recovery pipe 801, and a jacking pipe 803 is fixedly installed at the output end of the telescopic assembly 802.

[0040] By driving the plugging component 6 to move towards each other through the driving component 7, the overall synchronous movement of the recovery pipe 801 towards each other will be driven until the telescopic component 802 is released, so as to push the overall pushing of the jacking pipe 803 to open the sealing component 9 towards each other, and finally the bottom end of the jacking pipe 803 can be smoothly inserted into the bottom of the inner cavity of the oil field valve body 1.

[0041] As Figure 1 and Figure 2 shown, a pressure warning device 4 is provided at the top of one side of the oil field valve body 1.

[0042] Adopting the above scheme: Through the design of the pressure warning device 4, the pressure of the fluid oil in the inner cavity of the oil field valve body 1 can be detected. When the pressure changes violently, the warning device on one side of the pressure warning device 4 will make a sound to remind the operator that there is oil leakage inside the oil field valve body 1.

[0043] As Figure 2 shown, the valve assembly 3 includes a screw 301, a valve column 302 and a rotating handwheel 303;

[0044] The screw 301 is movably sleeved inside the mounting seat 2, the valve column 302 is movably sleeved at the bottom of the screw 301, the rotating handwheel 303 is movably sleeved on the top surface of the oil field valve body 1, and the inside of the rotating handwheel 303 is threadedly sleeved with the surface of the screw 301. A limiting partition 5 is provided at the bottom of the valve column 302.

[0045] Adopting the above scheme: By providing the screw 301, when the operator rotates the rotating handwheel 303, the screw 301 can be driven to rotate and move up and down, and then the valve column 302 can be driven to move up and down under the limiting action of the limiting partition 5.

[0046] As Figure 2 , Figure 3 and Figure 8 shown, the plugging component 6 includes a fixed retaining ring 601, a plugging circular plate 602, a sliding frame 603 and a limiting member 604;

[0047] The fixed retaining ring 601 is fixedly installed on the inner sides of both ends of the inner cavity of the oil field valve body 1, the plugging circular plate 602 is movably installed on both sides of the inner cavity of the oil field valve body 1, the sliding frame 603 is arranged in the middle of both ends of the plugging circular plate 602, and the outer end of the sliding frame 603 extends to the surface of the oil field valve body 1. The inner side of one end of the sliding frame 603 is limited and sleeved through the limiting member 604, and the inner side of the other end of the sliding frame 603 is connected to the outside of the driving component 7.

[0048] Adopting the above scheme: By providing the plugging circular plate 602, when the two plugging circular plates 602 are driven to move towards each other or away from each other, the fitting and separation from the fixed retaining ring 601 can be realized, and thus the two sides of the inner cavity of the oil field valve body 1 can be sealed or developed.

[0049] As Figure 10 and Figure 11 shown, the driving assembly 7 includes a triangular plate 701, an electric telescopic rod 702 and a linkage shaft 703;

[0050] The triangular plate 701 is arranged at the inner end of one side of the sliding frame 603, the electric telescopic rod 702 is arranged at the middle of one side of the oil field valve body 1, the linkage shafts 703 are arranged on both sides of the top of the electric telescopic rod 702, and the linkage shafts 703 extend into the inner groove of the triangular plate 701.

[0051] With the above solution: by arranging the linkage shaft 703, when the electric telescopic rod 702 is started, the linkage shaft 703 can be driven to slide obliquely up and down in the inner groove of the triangular plate 701, and then the two triangular plates 701, the sliding frame 603 and the plugging circular plate 602 can be pulled to move towards or away from each other.

[0052] As Figure 6 shown, the sealing assembly 9 includes a through groove 901, a sealing block 902, a first connecting rod 903 and a second spring 904;

[0053] The through groove 901 is opened on both sides of the bottom of the oil field valve body 1, and the through groove 901 is located inside the recovery pipe 801. The sealing block 902 is movably installed inside the through groove 901. The first connecting rod 903 is arranged inside the sealing block 902 and is located inside the oil field valve body 1. The inner end of the first connecting rod 903 is elastically connected to the inner wall of the oil field valve body 1 through the second spring 904.

[0054] With the above solution: by arranging the sealing block 902, when the entire jacking pipe 803 moves upward, it will push the inclined surface of the sealing block 902, and squeeze and push the two sealing blocks 902 and the first connecting rod 903 to move away from each other, so that the top of the jacking pipe 803 can be smoothly inserted into the inner cavity of the bottom of the oil field valve body 1.

[0055] As Figure 7 shown, the telescopic assembly 802 includes a telescopic pipe 8021, a movable rod 8022 and a first spring 8023;

[0056] The telescopic pipe 8021 is arranged on both sides of the inner cavity of the recovery pipe 801. The movable rod 8022 is movably installed inside the telescopic pipe 8021. The bottom of the movable rod 8022 is elastically connected to the inner wall of the telescopic pipe 8021 through the first spring 8023. The top of the movable rod 8022 is fixedly connected to the jacking pipe 803.

[0057] With the above solution: by arranging the first spring 8023, when the recovery pipes 801 move towards each other and the jacking pipe 803 is aligned with the through groove 901, the elastic force of the first spring 8023 will be released, so as to smoothly push the movable rod 8022 and the entire jacking pipe 803 to move upward.

[0058] As Figure 2 and Figure 3 shown, communication pipes 10 are provided on both sides inside the valve stem 302.

[0059] Adopting the above solution: Through the design of the communication pipes 10, the cavities in the middle of the oilfield valve body 1 above and below the valve stem 302 can be communicated, and there is constant gas inside, enabling the valve stem 302 to move up and down smoothly.

[0060] As Figure 5 shown, a shielding assembly 11 is provided at the bottom of the valve stem 302 outside the communication pipes 10. The shielding assembly 11 includes a shielding plate 1101, a second connecting rod 1102, and a first connecting spring 1103;

[0061] The shielding plate 1101 is movably installed on both sides of the bottom of the valve stem 302. The second connecting rod 1102 is provided at the bottom of the shielding plate 1101 and is movably installed inside the valve stem 302. The second connecting rod 1102 is elastically connected to the inner wall of the valve stem 302 through the first connecting spring 1103.

[0062] Adopting the above solution: Due to the elastic force of the first connecting spring 1103, the second connecting rod 1102 and the shielding plate 1101 can be pushed downward. Only when a large amount of gas enters the oilfield valve body 1 and the air pressure increases, the shielding plate 1101 will be pushed upward.

[0063] As Figure 4 shown, the outer end of the recovery pipe 801 is communicated with the tops on both sides of the oilfield valve body 1 through a one-way valve group 12. The one-way valve group 12 includes a fixed pipe 1201, a one-way valve stem 1202, and a second connecting spring 1203;

[0064] The outside of the recovery pipe 801 is slidably connected to one end of the fixed pipe 1201. The other end of the fixed pipe 1201 is fixedly connected to the tops on both sides of the oilfield valve body 1. The one-way valve stem 1202 is movably installed inside the oilfield valve body 1, and the one-way valve stem 1202 is located below the top end of the fixed pipe 1201. The one-way valve stem 1202 is elastically connected to the inside of the oilfield valve body 1 through the second connecting spring 1203.

[0065] Adopting the above solution: Due to the elastic force of the second connecting spring 1203, the one-way valve stem 1202 will be pushed upward, which can block the top of the fixed pipe 1201. When oil enters through the fixed pipe 1201, the one-way valve stem 1202 can be pushed to open downward unidirectionally, enabling the oil to smoothly enter the oilfield valve body 1 for recovery.

[0066] The working principle and usage process of the present invention:

[0067] First, the operator starts the rotary handwheel 303 to drive the screw 301 to rotate, driving the entire valve stem 302 to move up and down. When moving upward, the inner cavity of the valve stem 302 is connected to the cavities at both ends of the oilfield valve body 1, allowing the oil to pass through smoothly. When the pressure warning device 4 detects an increase in the pressure inside the oilfield valve body 1 and issues a warning, indicating an oil leak in the middle of the oilfield valve body 1, at this time, the operator can immediately start the output end of the electric telescopic rod 702 to move upward. As a result, the linkage shafts 703 on both sides of the output end of the electric telescopic rod 702 slide along the inner groove of the triangular plate 701, causing the triangular plate 701, the sliding frame 603, and the plugging circular plate 602 to move towards each other until the plugging circular plate 602 fits against the fixed retaining ring 601, so as to isolate the two sides and the middle of the inner cavity of the oilfield valve body 1.

[0068] Then, due to the sliding frame 603 moving towards each other, the recovery pipe 801 can be driven to move synchronously towards each other as a whole through the connecting frame 13 until the top pipe 803 is aligned with the through groove 901. At this time, the elastic force of the first spring 8023 will be released, thereby pushing the movable rod 8022 to drive the whole top pipe 803 to move upward, so that the top of the top pipe 803 squeezes and pushes the outer inclined surface of the sealing block 902, causing the sealing block 902 and the first connecting rod 903 to move towards each other. Subsequently, the whole top pipe 803 will be smoothly inserted into the bottom of the inner cavity of the oilfield valve body 1, and the oil at the bottom end of the middle part of the inner cavity of the oilfield valve body 1 will be pushed by air pressure through the top pipe 803 and the recovery pipe 801 into the fixed pipe 1201. At the same time, the gas in the inner cavity of the fixed pipe 1201 will be squeezed and introduced into the top of the inner cavity of the oilfield valve body 1, and the oil will push the one-way valve stem 1202 downward through the fixed pipe 1201, enabling the oil to enter the fixed pipe 1201 internally in a one-way manner for recovery.

[0069] Finally, when the gas in the inner cavity of the fixed pipe 1201 enters the inner cavity of the oilfield valve body 1, it will cause the air pressure in the inner cavity to increase, pushing the whole baffle plate 1101 and the second connecting rod 1102 upward, allowing the gas to enter the inner cavity of the valve stem 302, and causing the oil inside the valve stem 302 to be pressed at the bottom by air pressure. Eventually, by rotating the rotary handwheel 303 to drive the screw 301 to rotate and drive the whole valve stem 302 downward, the top of the top pipe 803 can support the whole baffle plate 1101 to open upward, and the oil squeezed at the bottom of the valve stem 302 will enter the fixed pipe 1201 through the top pipe 803 and the recovery pipe 801, further pushing the one-way valve stem 1202 downward, enabling the oil in each part to flow back smoothly to the two ends inside the oilfield valve body 1 to achieve oil recovery. Then, the operator can remove the mounting seat 2, the valve assembly 3, and the pressure warning device 4 as a whole to repair and replace the valve assembly 3.

[0070] It should be noted that; since the density of oil is greater than that of gas, the oil is always located at the bottom of the gas.

[0071] It should be noted that, in this document, 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 actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0072] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oilfield valve with a warning indication function, comprising an oilfield valve body (1), characterized in that: Further comprising: A mounting base (2), which is arranged in the middle of the top of the oilfield valve body (1); A valve assembly (3), which is arranged in the middle of the inner cavity of the oilfield valve body (1); A plugging assembly (6), which is arranged in the inner cavities on both sides of the oilfield valve body (1); A driving assembly (7), which is arranged inside the oilfield valve body (1), and the driving assembly (7) is located at the inner end of one side of the plugging assembly (6); A recovery mechanism (8), which is arranged on both sides of the bottom of the oilfield valve body (1); A sealing assembly (9), which is arranged on both sides of the bottom of the oilfield valve body (1), and the sealing assembly (9) is located inside the recovery mechanism (8); Among them, the recovery mechanism (8) includes recovery pipes (801) movably installed on both sides of the bottom of the oilfield valve body (1), one side of the recovery pipe (801) is connected to the bottom of one side of the plugging assembly (6) through a connecting frame (13), telescopic assemblies (802) are arranged on both sides of the inner cavity of the recovery pipe (801), and a top pipe (803) is fixedly installed at the output end of the telescopic assembly (802).

2. The oilfield valve with a warning indication function according to claim 1, characterized in that: A pressure warning device (4) is arranged at the top of one side of the oilfield valve body (1).

3. The oilfield valve with a warning indication function according to claim 1, characterized in that: The valve assembly (3) includes a screw rod (301), a valve column (302) and a rotary handwheel (303); The screw rod (301) is movably sleeved inside the mounting base (2), the valve column (302) is movably sleeved at the bottom of the screw rod (301), the rotary handwheel (303) is movably sleeved on the surface of the top of the oilfield valve body (1), and the inside of the rotary handwheel (303) is threadedly sleeved on the surface of the screw rod (301), and a limiting partition plate (5) is arranged at the bottom of the valve column (302).

4. The oilfield valve with a warning indication function according to claim 1, characterized in that: The plugging assembly (6) includes a fixed retaining ring (601), a plugging circular plate (602), a sliding frame (603) and a limiting member (604); The fixed retaining ring (601) is fixedly installed on the inner sides of both ends of the inner cavity of the oilfield valve body (1), the plugging circular plate (602) is movably installed on both sides of the inner cavity of the oilfield valve body (1), the sliding frame (603) is arranged in the middle of both ends of the plugging circular plate (602), and the outer end of the sliding frame (603) extends to the surface of the oilfield valve body (1), the inner side of one end of the sliding frame (603) is limited and sleeved through a limiting member (604), and the inner side of the other end of the sliding frame (603) is connected to the outer side of the driving assembly (7).

5. The oilfield valve with a warning indication function according to claim 1, wherein: The driving assembly (7) includes a triangular plate (701), an electric telescopic rod (702) and a linkage shaft (703); The triangular plate (701) is arranged at the inner end of one side of the sliding frame (603), the electric telescopic rod (702) is arranged in the middle of one side of the oilfield valve body (1), the linkage shafts (703) are arranged on both sides of the top of the electric telescopic rod (702), and the linkage shafts (703) extend into the inner groove of the triangular plate (701).

6. The oilfield valve with a warning indication function according to claim 1, wherein: The sealing assembly (9) includes a through groove (901), a sealing block (902), a first connecting rod (903), and a second spring (904); The through groove (901) is formed on both sides of the bottom of the oilfield valve body (1), and the through groove (901) is located inside the recovery pipe (801). The sealing block (902) is movably installed inside the through groove (901). The first connecting rod (903) is disposed inside the sealing block (902) and is located inside the oilfield valve body (1). The inner end of the first connecting rod (903) is elastically connected to the inner wall of the oilfield valve body (1) through the second spring (904).

7. The oilfield valve with a warning indication function according to claim 1, characterized in that: The telescopic assembly (802) includes a telescopic pipe (8021), a movable rod (8022), and a first spring (8023); The telescopic pipe (8021) is disposed on both sides of the inner cavity of the recovery pipe (801). The movable rod (8022) is movably installed inside the telescopic pipe (8021). The bottom of the movable rod (8022) is elastically connected to the inner wall of the telescopic pipe (8021) through the first spring (8023). The top of the movable rod (8022) is fixedly connected to the top pipe (803).

8. The oilfield valve with a warning indication function according to claim 3, characterized in that: On both sides inside the valve stem (302), there are communication pipes (10).

9. The oilfield valve with a warning indication function according to claim 3, wherein: At the bottom of the valve stem (302), there is a shielding assembly (11) located outside the communication pipe (10). The shielding assembly (11) includes a shielding plate (1101), a second connecting rod (1102), and a first connecting spring (1103); The shielding plate (1101) is movably installed on both sides of the bottom of the valve stem (302). The second connecting rod (1102) is disposed at the bottom of the shielding plate (1101) and is movably installed inside the valve stem (302). The second connecting rod (1102) is elastically connected to the inner wall of the valve stem (302) through the first connecting spring (1103).

10. The oilfield valve with a warning indication function according to claim 1, characterized in that: The outer end of the recovery pipe (801) is communicated with the tops of both sides of the oilfield valve body (1) through a one-way valve group (12). The one-way valve group (12) includes a fixed pipe (1201), a one-way valve stem (1202), and a second connecting spring (1203); The outside of the recovery pipe (801) is slidably connected to one end of the fixed pipe (1201). The other end of the fixed pipe (1201) is fixedly connected to the tops of both sides of the oilfield valve body (1). The one-way valve stem (1202) is movably installed inside the oilfield valve body (1), and the one-way valve stem (1202) is located below the top end of the fixed pipe (1201). The one-way valve stem (1202) is elastically connected to the inside of the oilfield valve body (1) through the second connecting spring (1203).

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