Anti-leakage buffer cylinder capable of being monitored

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a monitorable leakproof buffer cylinder, which comprises an angle valve buffer cylinder, an outer layer jacket is sleeved on the outer wall of the angle valve buffer cylinder, interlayer spaces are arranged on the inner wall of the outer layer jacket and the outer wall of the angle valve buffer cylinder, an observation pipe with a valve is communicated with the outer layer jacket, and the observation pipe is communicated with the angle valve buffer cylinder. A plurality of spiral triangular blocks are fixedly arranged on the inner wall of the angle valve buffering cylinder, a plurality of semicircular spiral blocks are fixedly arranged between every two spiral triangular blocks, the bottom faces of the outer layer clamping sleeves are inclined, the two outer layer clamping sleeves are of a symmetrical structure, and the two outer layer clamping sleeves are rotationally connected through a rotating shaft. The multiple spiral triangular blocks and the multiple semicircular spiral blocks change the flowing direction and speed distribution of a medium, play a role in buffering and dispersing scouring force, reduce direct scouring abrasion of the medium to the cylinder wall, find the leakage situation in time through the observation pipe, and immediately close the valve on the observation pipe once leakage is found. Leakage media are limited in the interlayer space, and further expansion of leakage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a leak-proof buffer cylinder that can monitor leaks. Background Technology

[0002] In the coal-water slurry gasification unit, the wear-resistant pipeline release buffer cylinder downstream of the 123FV193 angle valve in the scrubbing tower plays a crucial role. However, the operating conditions of this buffer cylinder are extremely harsh, facing serious erosion and corrosion problems. Specifically, after the pressure is reduced by the 123FV193 angle valve, the design pressure before the angle valve is 6.5MPa, and the design pressure after the angle valve drops to 0.9MPa. This causes a significant increase in the flow velocity of the medium in the pipeline, and the medium contains a large number of fine slag particles. Under these conditions, these fine slag particles will continuously erode and wear down the buffer cylinder downstream of the angle valve, causing the pipe wall to gradually thin and even wear through and leak, thus creating a great safety hazard.

[0003] Currently, the buffer tanks in the pipelines downstream of the black discharge angle valves in gasification unit scrubbing towers are generally made of standard 316L material. During normal operation, monitoring mainly relies on non-destructive testing methods such as fixed-point thickness measurement. However, due to the limitations of the testing methods and the influence of the high-temperature environment during operation, on the one hand, measurement deviations may occur, and on the other hand, the thickness of some parts of the buffer tank cannot be accurately measured. This leads to frequent leakage in the later stages of buffer tank operation, which not only puts production in a passive situation but also brings safety hazards. In order to ensure that the risk of leakage caused by corrosion and erosion is reduced during normal production operation, and at the same time fully meet the requirements of angle valves for wear resistance, high temperature resistance, and corrosion resistance, it is urgent to improve and innovate the existing buffer tanks. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a leak-proof buffer cylinder with multiple spiral triangular blocks and multiple semi-circular spiral blocks. These blocks alter the flow direction and velocity distribution of the medium, providing a buffering and dispersing effect on the scouring force, reducing direct scouring and wear on the cylinder wall. Leakage can be detected promptly through the observation pipe. Once a leak is detected, the valve on the observation pipe is immediately closed to confine the leaking medium within the interlayer space, preventing further leakage.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a leak-proof monitoring buffer cylinder, including an angle valve buffer cylinder, an outer jacket is fitted on the outer wall of the angle valve buffer cylinder, an interlayer space is provided between the inner wall of the outer jacket and the outer wall of the angle valve buffer cylinder, an observation tube with a valve is connected to the outer jacket, multiple helical triangular blocks are fixed on the inner wall of the angle valve buffer cylinder, multiple semi-circular helical blocks are fixed between two helical triangular blocks, the bottom surface of the outer jacket is inclined, two outer jackets are provided in a symmetrical structure, the two outer jackets are rotatably connected by a rotating shaft, and two connecting components are fixed on the outer wall of the outer jacket.

[0006] Preferably, the outer jacket has multiple slots inside, and the outer peripheral wall of the angle valve buffer cylinder is fixed with multiple limiting rings, which engage with the slots.

[0007] The above technical solutions improve the stability and sealing effect of the outer jacket installation.

[0008] Preferably, the mating end faces of the two outer jackets are fixedly connected by a connecting assembly, and a sealing gasket is provided between the mating end faces of the two outer jackets.

[0009] Through the above technical solution, the sealing gasket set between the mating end faces of the two outer jackets is compressed during the process of the mating end faces being tightly fitted, thereby forming a seal between the two outer jackets.

[0010] Preferably, the connecting assembly includes a hinge seat, which is fixedly connected to the outer wall of one of the outer jackets. A screw is rotatably connected to the pin of the hinge seat, and a hexagonal bolt is threaded onto the screw via an external thread.

[0011] With the above technical solution, as the hexagonal bolt rotates, it will advance along the thread of the screw, and the circular sleeve will apply a gradually increasing pressure with a certain angle on the inclined end face of the clamping block, so that the two outer jackets will gradually come closer together.

[0012] Preferably, a locking block is fixed on the outer wall of another outer jacket, the top surface of the locking block has a groove, the screw is inserted into the locking block through the groove, one end face of the locking block is inclined, and a circular sleeve is fixed on the outer wall of the hexagonal bolt, the circular sleeve abuts against the inclined end face of the locking block.

[0013] With the above technical solution, the screw rotates to align with the groove on the top surface of the locking block on the outer wall of another outer jacket, and is inserted into the groove.

[0014] Preferably, the inclined end face of the card block has two threaded holes, a screw rod is inserted into the threaded holes, an adjusting nut is fixed at the end of the screw rod away from the card block, and an internal hexagonal screw hole is opened in the middle of the outer wall of the adjusting nut.

[0015] The above technical solution allows the screw rod to be controlled to screw in or out along the locking block by rotating the adjusting nut.

[0016] Preferably, the outer wall of the hexagonal bolt has multiple positioning grooves arranged in a ring array, and the bolt head is inserted into the positioning grooves.

[0017] The above technical solution restricts the rotation of the hexagonal bolt along the screw, thereby preventing the hexagonal bolt from loosening due to vibration and other factors.

[0018] The beneficial effects of this utility model are:

[0019] 1. The inner layer of the angle valve buffer cylinder is used to withstand the pressure and scouring of the medium in the pipeline. When the medium flows in the angle valve buffer cylinder, multiple spiral triangular blocks and multiple semi-circular spiral blocks on the inner wall change the flow direction and velocity distribution of the medium, playing a certain role in buffering and dispersing the scouring force, reducing the direct scouring and wear of the medium on the cylinder wall. The outer jacket is fitted on the outer wall of the angle valve buffer cylinder. The interlayer space formed by the inner wall of the outer jacket and the outer wall of the angle valve buffer cylinder is used to collect the medium that may leak. The two symmetrical outer jackets are rotatably connected by a rotating shaft and fixedly connected by a connecting component to ensure the stable connection and sealing of the outer jackets. The observation pipe with a valve connected to the outer jacket keeps the valve in the open state during normal operation.

[0020] 2. When a leak occurs inside the angle valve buffer cylinder, the leaking medium will enter the interlayer space and flow towards the observation pipe through the inclined structure on the bottom surface of the outer jacket. On-site personnel can detect the leak in time through the observation pipe. Once a leak is detected, the valve on the observation pipe will be closed immediately to confine the leaking medium within the interlayer space and prevent the leak from expanding further. Since the outer jacket and the angle valve buffer cylinder are made of the same material thickness, the angle valve buffer cylinder can continue to be used even if it leaks. Furthermore, corresponding maintenance plans can be formulated according to the gasifier maintenance cycle, thereby extending the service life of the buffer cylinder and ensuring the safe and stable operation of the unit.

[0021] 3. Rotate the screw until it aligns with the groove on the top surface of the locking block on the outer wall of the other outer jacket, and insert it into the groove. At this time, by rotating the hexagonal bolt threaded on the screw, the circular sleeve fixed on the outer wall of the hexagonal bolt abuts against the inclined end face of the locking block. As the hexagonal bolt rotates, it will advance along the thread of the screw. The circular sleeve applies a gradually increasing pressure with a certain angle on the inclined end face of the locking block, causing the two outer jackets to gradually approach each other until the mating end faces are in contact. The sealing gasket set between the mating end faces of the two outer jackets is compressed during the process of the mating end faces being in close contact, thereby forming a seal between the two outer jackets, preventing the leakage medium from escaping from the mating point, improving installation efficiency, ensuring installation accuracy, and facilitating the stable operation of the subsequent angle valve buffer cylinder.

[0022] 4. By rotating the adjusting nut, the screw head is controlled to screw in or out along the retaining block through the threaded hole. When the screw head screws in, it gradually inserts into the positioning groove on the outer wall of the hexagonal bolt, restricting the rotation of the hexagonal bolt along the screw, thereby preventing the hexagonal bolt from loosening due to vibration or other factors. When it is necessary to adjust the connection, rotate the adjusting nut to screw the screw head out until it separates from the positioning groove, so that the hexagonal bolt can be rotated. This reduces the possibility of the hexagonal bolt loosening, lowers the risk of it separating from the screw, and ensures the stability of the connection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the angle valve buffer cylinder of this utility model;

[0025] Figure 3 This is a schematic diagram of the spiral triangular block structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the outer jacket of this utility model;

[0027] Figure 5 This is a schematic diagram of the connection component structure of this utility model;

[0028] Figure 6 This is a schematic diagram of the assembly of the screw head structure of this utility model;

[0029] Figure 7 This is an enlarged schematic diagram of the structure at point A of this utility model.

[0030] In the diagram: 1. Angle valve buffer cylinder; 2. Outer jacket; 3. Observation tube; 4. Helical triangular block; 5. Semi-circular helical block; 6. Rotating shaft; 7. Connecting assembly; 701. Hinge seat; 702. Screw; 703. Hex bolt; 704. Locking block; 705. Groove; 706. Threaded hole; 707. Screw head rod; 708. Adjusting nut; 709. Socket hex bolt hole; 710. Positioning groove; 711. Circular sleeve; 8. Slot; 9. Limiting ring; 10. Interlayer space. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] Example 1: As Figure 1-6 As shown, this embodiment provides a leak-proof monitoring buffer cylinder, including an angle valve buffer cylinder 1. An outer jacket 2 is fitted on the outer wall of the angle valve buffer cylinder 1. An interlayer space 10 is provided between the inner wall of the outer jacket 2 and the outer wall of the angle valve buffer cylinder 1. An observation tube 3 with a valve is connected to the outer jacket 2. Multiple spiral triangular blocks 4 are fixed on the inner wall of the angle valve buffer cylinder 1. Multiple semi-circular spiral blocks 5 are fixed between two spiral triangular blocks 4. The bottom surface of the outer jacket 2 is inclined. Two outer jackets 2 are provided in a symmetrical structure. The two outer jackets 2 are rotatably connected by a rotating shaft 6. Two connecting components 7 are fixed on the outer wall of the outer jacket 2.

[0033] The outer jacket 2 has multiple slots 8 inside, and the outer peripheral wall of the angle valve buffer cylinder 1 is fixed with multiple limiting rings 9, which engage with the slots 8; this improves the stability and sealing effect of the outer jacket 2 during installation.

[0034] The mating end faces of the two outer jackets 2 are fixedly connected by the connecting component 7, and a sealing gasket is provided between the mating end faces of the two outer jackets 2; the sealing gasket provided between the mating end faces of the two outer jackets 2 is compressed during the process of the mating end faces being tightly fitted, thereby forming a seal between the two outer jackets 2.

[0035] The connecting assembly 7 includes a hinge 701, which is fixedly connected to the outer wall of one of the outer jackets 2. A screw 702 is rotatably connected to the pin of the hinge 701, and a hex bolt 703 is threaded onto the screw 702 via an external thread. As the hex bolt 703 rotates, it advances along the thread of the screw 702. The circular sleeve 711 applies a gradually increasing pressure with a certain angle to the inclined end face of the locking block 704, causing the two outer jackets 2 to gradually come closer together.

[0036] Another outer jacket 2 has a locking block 704 fixed on its outer wall. The top surface of the locking block 704 has a groove 705. The screw 702 is inserted into the locking block 704 through the groove 705. One end face of the locking block 704 is inclined. The outer wall of the hexagonal bolt 703 has a circular sleeve 711 fixed on it. The circular sleeve 711 abuts against the inclined end face of the locking block 704. The screw 702 is rotated to align with the groove 705 on the top surface of the locking block 704 on the outer wall of the other outer jacket 2 and is inserted into the groove 705.

[0037] Working principle: The inner layer of the angle valve buffer cylinder 1 is used to withstand the pressure and scouring of the medium in the pipeline. When the medium flows in the angle valve buffer cylinder 1, multiple spiral triangular blocks 4 and multiple semi-circular spiral blocks 5 on the inner wall change the flow direction and velocity distribution of the medium, which plays a certain role in buffering and dispersing the scouring force, reducing the direct scouring and wear of the medium on the cylinder wall. The outer jacket 2 is fitted on the outer wall of the angle valve buffer cylinder 1. The interlayer space 10 formed by the inner wall of the outer jacket 2 and the outer wall of the angle valve buffer cylinder 1 is used to collect the medium that may leak. The two symmetrical outer jackets 2 are rotatably connected by the rotating shaft 6 and fixedly connected by the connecting component 7 to ensure the stable connection and sealing of the outer jacket 2. The observation pipe 3 with the valve is connected to the outer jacket 2. During normal operation, the valve is kept in the open state.

[0038] When a leak occurs inside the angle valve buffer cylinder 1, the leaked medium will enter the interlayer space 10 and flow towards the observation pipe 3 through the inclined structure on the bottom surface of the outer jacket 2. On-site personnel can detect the leak in time through the observation pipe 3. Once a leak is detected, the valve on the observation pipe 3 will be closed immediately to confine the leaked medium within the interlayer space 10 and prevent the leak from expanding further. Since the outer jacket 2 and the angle valve buffer cylinder 1 are made of the same material thickness, even if the angle valve buffer cylinder 1 leaks, it can still be used. Furthermore, corresponding maintenance plans can be formulated according to the gasifier maintenance cycle, thereby extending the service life of the buffer cylinder and ensuring the safe and stable operation of the unit.

[0039] When it is necessary to connect and install the two outer jackets 2, rotate the screw 702 until it aligns with the groove 705 on the top surface of the locking block 704 on the outer wall of the other outer jacket 2, and insert it into the groove 705. At this time, by rotating the hexagonal bolt 703 threaded on the screw 702, the circular sleeve 711 fixed on the outer wall of the hexagonal bolt 703 abuts against the inclined end face of the locking block 704. As the hexagonal bolt 703 rotates, it will advance along the thread of the screw 702. The circular sleeve 711 applies a gradually increasing pressure with a certain angle on the inclined end face of the locking block 704, so that the two outer jackets 2 gradually come closer together until the mating end faces are in contact. The sealing gasket set between the mating end faces of the two outer jackets 2 is compressed during the process of the mating end faces being in close contact, thereby forming a seal between the two outer jackets 2, preventing the leakage medium from escaping from the mating point, improving the installation efficiency, ensuring the installation accuracy, and facilitating the stable operation of the subsequent angle valve buffer cylinder 1.

[0040] Example 2: Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, based on Embodiment 1, two threaded holes 706 are provided on the inclined end face of the locking block 704. A screw rod 707 is inserted into the threaded hole 706. An adjusting nut 708 is fixed at the end of the screw rod 707 away from the locking block 704. An internal hexagonal screw hole 709 is provided in the middle of the outer wall of the adjusting nut 708. By rotating the adjusting nut 708, the screw rod 707 is controlled to screw in or out along the locking block 704 through the threaded hole 706.

[0041] The outer wall of the hexagonal bolt 703 has a ring array structure with multiple positioning grooves 710. The screw head 707 is inserted into the positioning grooves 710 to restrict the rotation of the hexagonal bolt 703 along the screw 702, thereby preventing the hexagonal bolt 703 from rotating and loosening due to vibration and other factors.

[0042] In use, by rotating the adjusting nut 708, the screw rod 707 is controlled to screw in or out along the locking block 704 through the threaded hole 706; when the screw rod 707 is screwed in, it is gradually inserted into the positioning groove 710 on the outer wall of the hexagonal bolt 703, which restricts the rotation of the hexagonal bolt 703 along the screw rod 702, thereby preventing the hexagonal bolt 703 from rotating and loosening due to vibration and other factors;

[0043] When the connection needs to be adjusted, rotate the adjusting nut 708 to unscrew the screw rod 707 until it separates from the positioning groove 710. Then the hex bolt 703 can be rotated, which reduces the possibility of the hex bolt 703 loosening, lowers the risk of it separating from the screw rod 702, and ensures the stability of the connection.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A leak-proof monitoring buffer cylinder, comprising an angle valve buffer cylinder (1), characterized in that: The outer wall of the angle valve buffer cylinder (1) is fitted with an outer jacket (2). The inner wall of the outer jacket (2) and the outer wall of the angle valve buffer cylinder (1) are provided with a sandwich space (10). An observation tube (3) with a valve is connected to the outer jacket (2). Multiple spiral triangular blocks (4) are fixed on the inner wall of the angle valve buffer cylinder (1). Multiple semi-circular spiral blocks (5) are fixed between two spiral triangular blocks (4). The bottom surface of the outer jacket (2) is inclined. Two outer jackets (2) are provided in a symmetrical structure. The two outer jackets (2) are rotatably connected by a rotating shaft (6). Two connecting components (7) are fixed on the outer wall of the outer jacket (2).

2. The leak-proof buffer cylinder as described in claim 1, characterized in that: The outer jacket (2) has multiple slots (8) inside, and the outer peripheral wall of the angle valve buffer cylinder (1) is fixed with multiple limiting rings (9), which engage with the slots (8).

3. The leak-proof buffer cylinder as described in claim 1, characterized in that: The mating end faces of the two outer jackets (2) are fixedly connected by a connecting component (7), and a sealing gasket is provided between the mating end faces of the two outer jackets (2).

4. The leak-proof and monitorable buffer cylinder as described in claim 3, characterized in that: The connecting assembly (7) includes a hinge (701), which is fixedly connected to the outer wall of one of the outer jackets (2). A screw (702) is rotatably connected to the pin of the hinge (701), and a hexagonal bolt (703) is threaded onto the screw (702) via an external thread.

5. The leak-proof buffer cylinder as described in claim 4, characterized in that: Another outer jacket (2) has a locking block (704) fixed on its outer wall. The top surface of the locking block (704) has a groove (705). The screw (702) is inserted into the locking block (704) through the groove (705). One end face of the locking block (704) is inclined. The outer wall of the hexagonal bolt (703) has a circular sleeve (711) fixed on it. The circular sleeve (711) abuts against the inclined end face of the locking block (704).

6. The leak-proof and monitorable buffer cylinder as described in claim 5, characterized in that: Two threaded holes (706) are provided on the inclined end face of the locking block (704). A screw rod (707) is inserted into the threaded hole (706). An adjusting nut (708) is fixed at the end of the screw rod (707) away from the locking block (704). An internal hexagonal screw hole (709) is provided in the middle of the outer wall of the adjusting nut (708).

7. The leak-proof and monitorable buffer cylinder as described in claim 6, characterized in that: The outer wall of the hexagonal bolt (703) has a ring array structure with multiple positioning grooves (710), and the screw head (707) is inserted into the positioning grooves (710).

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