A high pressure resistant valve easy to maintain

Abstract

The utility model relates to an easy-to-maintain high-pressure-resistant valve belongs to high-pressure-resistant valve technical field, this easy-to-maintain high-pressure-resistant valve, include: ball valve shell and install pipe, the one end fixedly connected with annular distribution screw rod of ball valve shell, the surface screw thread connection has the nut of screw rod, anti - loosening mechanism, the anti - loosening mechanism includes the first guard frame and second guard frame of joint in ball valve shell surface, the surface joint of first guard frame is in the inner wall of second guard frame, the inner wall sliding connection has the limiting block of two of first guard frame, through limiting block, first magnetic block and second magnetic block mutual cooperation, have realized first guard frame and second guard frame install in the junction of ball valve shell and install pipe, and then realized the one end of nut is in contact and locked, avoided because the vibration force leads to the loosening of nut, guaranteed the stable connection of nut and screw rod to the tightness of high-pressure-resistant valve junction.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure resistant valve technology, and in particular to a high-pressure resistant valve that is easy to maintain. Background Technology

[0002] Natural gas is a multi-component, mixed gaseous fossil fuel, primarily found in oil and gas fields, with smaller amounts also originating from coal seams. In the gas extraction and refining process, pipelines are used to transport the underground natural gas to the refining and processing facilities. To ensure the safe transport of natural gas, high-pressure resistant valves are typically installed at the corresponding pipeline locations to withstand high pressure and precisely control the flow rate of the natural gas.

[0003] For future maintenance, the high-pressure valves installed on existing natural gas pipelines are usually designed to be detachable via screws and nuts.

[0004] However, the vibration force generated by natural gas flowing in pipelines and high-pressure valves can easily be transmitted to the screws and nuts on the high-pressure valves, causing the nuts to loosen and thus affecting the tightness of the high-pressure valve connections. Utility Model Content

[0005] Therefore, it is necessary to provide an easy-to-maintain high-pressure valve to address the problem that the vibration force generated by natural gas flowing in pipelines and high-pressure valves can be easily transmitted to the screws and nuts on the high-pressure valves, which can easily cause the nuts to loosen.

[0006] The device includes: a ball valve housing and an installation pipe, wherein one end of the ball valve housing is fixedly connected to an annularly distributed screw, and the surface of the screw is threaded with a nut; and an anti-loosening mechanism, wherein the anti-loosening mechanism includes a first protective frame and a second protective frame that are snapped onto the surface of the ball valve housing, the surface of the first protective frame being snapped onto the inner wall of the second protective frame, two limiting blocks being slidably connected to the inner wall of the first protective frame, a first magnetic block being fixedly connected to the inner wall of the limiting block, and two second magnetic blocks being fixedly connected to the inner wall of the first protective frame, wherein the first magnetic block and the second magnetic block are attracted to each other by opposite poles.

[0007] In one embodiment, a long rod is slidably connected to the inner wall of the first protective frame, and the surface of the long rod is slidably connected to the limiting block and the inner wall of the second protective frame in sequence.

[0008] In one embodiment, the inner wall of the limiting block is rotatably connected to a positioning rod, and the inner wall of the long rod is slidably connected to the surface of the positioning rod.

[0009] In one embodiment, a resistance pad is slidably connected to the inner wall of the long rod, and the surface of the resistance pad contacts the surface of the positioning rod.

[0010] In one embodiment, a locking rod is slidably connected to the upper end of the inner wall of the long rod, one end of the locking rod passing through and extending out of the upper end of the inner wall of the long rod, and the surface of the locking rod engaging with the inner wall of the resistance pad.

[0011] In one embodiment, a spring is fixedly connected to one end of the lever, and the other end of the spring is fixedly connected to the inner wall of the long rod.

[0012] In one embodiment, an elastic rope is fixedly connected to the surface of the resistance pad, and the other end of the elastic rope is fixedly connected to the upper surface of the long rod. The elastic rope restricts the placement range of the resistance pad, avoiding the risk of loss.

[0013] In one embodiment, lifting blocks are fixedly connected to the surfaces of the first and second protective frames. The lifting blocks facilitate the retrieval of the first and second protective frames.

[0014] Beneficial effects

[0015] 1. By using the limit block, the first magnetic block and the second magnetic block in cooperation, the first protective frame and the second protective frame are installed at the connection between the ball valve body and the installation pipe, thereby locking one end of the nut to prevent the nut from loosening due to vibration, ensuring a stable connection between the nut and the screw, and thus ensuring the tightness of the connection of the high-pressure valve.

[0016] 2. By using a spring to push the lever to move and lock it inside the resistance pad, the resistance pad is limited, thereby ensuring that the long rod is stably located within the limit block, the first protective frame, and the second protective frame. This ensures that the first and second protective frames are stably installed at the connection between the ball valve body and the mounting pipe, and stably locks the nut, improving the tightness of the connection of the high-pressure valve. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the first and second protective frames of this utility model;

[0020] Figure 3 This is a cross-sectional view of the first and second protective frames of this utility model;

[0021] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This utility model Figure 3 Enlarged view of point B in the middle.

[0023] Figure label:

[0024] 100. Ball valve body; 200. Mounting pipe; 300. Screw; 400. Nut; 500. Anti-loosening mechanism; 501. First protective frame; 502. Second protective frame; 503. Limiting block; 504. First magnetic block; 505. Long rod; 506. Positioning rod; 507. Resistance pad; 508. Locking rod; 509. Spring; 510. Elastic rope; 511. Second magnetic block; 512. Lifting block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The following is combined Figures 1-5 This invention describes an easy-to-maintain, high-pressure resistant valve.

[0027] In one embodiment, an easy-to-maintain high-pressure resistant valve includes: a ball valve housing 100 and an installation pipe 200. One end of the ball valve housing 100 is fixedly connected to an annularly distributed screw 300, and the surface of the screw 300 is threadedly connected to a nut 400. The anti-loosening mechanism 500 includes a first guard frame 501 and a second guard frame 502 that are snapped onto the surface of the ball valve housing 100. The surface of the first guard frame 501 is snapped onto the inner wall of the second guard frame 502. Two limiting blocks 503 are slidably connected to the inner wall of the first guard frame 501. A first magnetic block 504 is fixedly connected to the inner wall of the limiting block 503. Two second magnetic blocks 511 are fixedly connected to the inner wall of the first guard frame 501. The first magnetic block 504 and the second magnetic block 511 are attracted to each other by opposite poles.

[0028] It should be noted that the upper surface of the ball valve housing 100 is provided with an anti-loosening mechanism 500, which is used to secure the connection at the upper surface of the ball valve housing 100.

[0029] Both the first magnetic block 504 and the second magnetic block 511 are samarium cobalt permanent magnet components, which have good high-temperature stability and corrosion resistance, and can maintain stable magnetism at high temperatures and in harsh environments.

[0030] Both the first protective frame 501 and the second protective frame 502 are fiberglass components, which have excellent lightweight and high strength, corrosion resistance and good insulation properties.

[0031] It should be noted that high-pressure resistant valves are typically composed of a ball valve body 100, mounting pipe 200, ball, valve stem, valve cover, and electric actuator. The model of the high-pressure resistant valve is Q941F-16P-DN25.

[0032] Electric actuator:

[0033] Electric motor: Provides power for opening and closing the valve.

[0034] Worm gear reduction mechanism: reduces the motor speed while increasing the output torque to meet the larger torque required for ball valve opening and closing.

[0035] Control module: Receives external control signals such as switch signals and analog signals, and controls the forward and reverse rotation and stop of the motor according to the signals, thereby realizing the opening, closing and regulation functions of the ball valve.

[0036] Encoder: Used to monitor the opening position of the ball in real time and feed the position signal back to the control system so that the operator can understand the working status of the valve.

[0037] The high-pressure resistant valve is made of 304 stainless steel, and the seals on the high-pressure resistant valve are made of polytetrafluoroethylene, which enables the high-pressure resistant valve to withstand the pressure of natural gas.

[0038] In the gas extraction and refining process, high-pressure valves are connected to corresponding pipelines at both ends via flanges. When the extracted natural gas is transported to the refining process, the control switch of the ball valve is operated to open the electric actuator on the ball valve, thereby rotating the ball to a suitable angle to ensure unobstructed flow inside the ball valve. At this time, the natural gas is pressurized by a compressor, and the pressurized natural gas is transported to the refining process through the corresponding pipelines and ball valves for processing and refining.

[0039] In this embodiment, when it is necessary to repair the internal parts of the high-pressure valve, the two limit blocks 503 are pulled to move the first magnetic block 504 away from the side of the second magnetic block 511. At this time, the first guard frame 501 and the second guard frame 502 are pulled away from each other, so that the connection between the ball valve body 100 and the mounting pipe 200 is exposed. The nuts 400 on the screw 300 are separated one by one with an electric wrench, so that the mounting pipe 200 and the ball valve body 100 can be quickly separated, which makes it convenient to repair the internal parts of the ball valve body 100.

[0040] like Figure 3-5 As shown, a long rod 505 is slidably connected to the inner wall of the first guard frame 501. The surface of the long rod 505 is slidably connected to the inner wall of the limiting block 503 and the second guard frame 502 in sequence. A positioning rod 506 is rotatably connected to the inner wall of the limiting block 503. The inner wall of the long rod 505 is slidably connected to the surface of the positioning rod 506. A resistance pad 507 is slidably connected to the inner wall of the long rod 505. The surface of the resistance pad 507 contacts the surface of the positioning rod 506. A locking rod 508 is slidably connected to the upper end of the inner wall of the long rod 505. One end of the lever 508 passes through and extends out of the upper end of the inner wall of the long rod 505. The surface of the lever 508 is engaged with the inner wall of the resistance pad 507. A spring 509 is fixedly connected to the end of the lever 508. The other end of the spring 509 is fixedly connected to the inner wall of the long rod 505. An elastic rope 510 is fixedly connected to the surface of the resistance pad 507. The other end of the elastic rope 510 is fixedly connected to the upper end of the surface of the long rod 505. Lifting blocks 512 are fixedly connected to the surfaces of the first guard frame 501 and the second guard frame 502.

[0041] The resistance pad 507, spring 509, and elastic rope 510 are all rubber components, which have a high coefficient of friction, high elasticity, good sealing properties, and corrosion resistance.

[0042] In this embodiment, after the valve is repaired, the pre-drilled hole on the mounting pipe 200 is positioned on the surface of the screw 300. An electric wrench is used to thread the nut 400 onto the surface of the screw 300 and press it against the end of the mounting pipe 200, connecting the mounting pipe 200 to the ball valve housing 100. The lifting block 512 is held to secure the first guard frame 501 and the second guard frame 502 at the connection between the mounting pipe 200 and the ball valve housing 100, with the first guard frame 501 locked inside the second guard frame 502. The limiting block 503 is pushed into the second guard frame 502, causing the first magnetic block 504 to adhere to one side of the second magnetic block 511. The long rod 505 is then pushed against the positioning rod 50. 6. The surface moves down and slides into the limiting block 503, the first guard frame 501 and the second guard frame 502 in sequence. The positioning rod 506 is rotated so that the protrusion of the positioning rod 506 abuts against the end of the long rod 505. The resistance pad 507 is slid into the long rod 505 so that the resistance pad 507 abuts against the positioning rod 506 and the protrusion of the positioning rod 506. The elastic force of the spring 509 pushes the locking rod 508 to move and lock it in the resistance pad 507, thereby locking the resistance pad 507. This makes the first guard frame 501 and the second guard frame 502 stably locked at the connection between the ball valve body 100 and the mounting pipe 200, thereby stably locking the nut 400.

[0043] When it is necessary to separate the first guard frame 501 from the second guard frame 502, pull the lever 508 away from the resistance pad 507, pull the resistance pad 507 away from the long rod 505, so that the through hole of the long rod 505 is opened, rotate the positioning rod 506 so that the protrusion of the positioning rod 506 is directly above the through hole of the long rod 505, pull the long rod 505 up away from the second guard frame 502, the first guard frame 501 and the limiting block 503, pull the two limiting blocks 503 to move, so that the first magnetic block 504 is away from the side of the second magnetic block 511. At this time, pull the first guard frame 501 and the second guard frame 502 away from each other.

[0044] Working principle: By holding the lifting block 512, the first guard frame 501 and the second guard frame 502 are locked at the connection between the mounting pipe 200 and the ball valve housing 100 and interlocked. The limiting block 503 is pushed into the second guard frame 502, causing the first magnetic block 504 to adhere to one side of the second magnetic block 511. The long rod 505 is pushed down on the surface of the positioning rod 506 and slides sequentially into the limiting block 503, the first guard frame 501, and the second guard frame 502. The positioning rod 506 is rotated to position the valve. The protrusion of rod 506 abuts against the end of long rod 505, causing resistance pad 507 to slide into long rod 505 and abut against positioning rod 506 and the protrusion of positioning rod 506. The elastic force of spring 509 pushes locking rod 508 to move and lock it into resistance pad 507, thereby locking resistance pad 507. This causes the first guard frame 501 and the second guard frame 502 to be stably locked at the connection between ball valve housing 100 and mounting pipe 200, thus stably locking nut 400.

[0045] It should be noted that the ball valve body 100, mounting pipe 200, screw 300, nut 400, long rod 505, and positioning rod 506 mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-pressure resistant valve that is easy to maintain, characterized in that, include: The ball valve housing (100) and the mounting pipe (200) are provided. One end of the ball valve housing (100) is fixedly connected to an annularly distributed screw (300), and the surface of the screw (300) is threaded with a nut (400). The anti-loosening mechanism (500) includes a first guard frame (501) and a second guard frame (502) that are snapped onto the surface of the ball valve housing (100). The surface of the first guard frame (501) is snapped onto the inner wall of the second guard frame (502). Two limiting blocks (503) are slidably connected to the inner wall of the first guard frame (501). A first magnetic block (504) is fixedly connected to the inner wall of the limiting block (503). Two second magnetic blocks (511) are fixedly connected to the inner wall of the first guard frame (501). The first magnetic block (504) and the second magnetic block (511) are attracted to each other by opposite poles.

2. The easy-to-maintain high-pressure resistant valve according to claim 1, characterized in that, The inner wall of the first protective frame (501) is slidably connected to a long rod (505), and the surface of the long rod (505) is slidably connected to the limiting block (503) and the inner wall of the second protective frame (502) in sequence.

3. The easy-to-maintain high-pressure resistant valve according to claim 2, characterized in that, The inner wall of the limiting block (503) is rotatably connected to a positioning rod (506), and the inner wall of the long rod (505) is slidably connected to the surface of the positioning rod (506).

4. The easy-to-maintain high-pressure resistant valve according to claim 2, characterized in that, The inner wall of the long rod (505) is slidably connected to a resistance pad (507), and the surface of the resistance pad (507) contacts the surface of the positioning rod (506).

5. The easy-to-maintain high-pressure resistant valve according to claim 4, characterized in that, A locking rod (508) is slidably connected to the upper end of the inner wall of the long rod (505). One end of the locking rod (508) passes through and extends out of the upper end of the inner wall of the long rod (505). The surface of the locking rod (508) is engaged with the inner wall of the resistance pad (507).

6. The easy-to-maintain high-pressure resistant valve according to claim 5, characterized in that, A spring (509) is fixedly connected to the end of the lever (508), and the other end of the spring (509) is fixedly connected to the inner wall of the long rod (505).

7. The easy-to-maintain high-pressure resistant valve according to claim 4, characterized in that, An elastic rope (510) is fixedly connected to the surface of the resistance pad (507), and the other end of the elastic rope (510) is fixedly connected to the upper surface of the long rod (505).

8. The easy-to-maintain high-pressure resistant valve according to claim 1, characterized in that, Lifting blocks (512) are fixedly connected to the surfaces of the first guard frame (501) and the second guard frame (502).

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