Pressure reducing valve for pressure reducing well

Abstract

The utility model discloses a pressure reducing valve for a pressure reducing well, which belongs to the pressure reducing field of the pressure reducing well and comprises a pressure reducing component arranged on a well lid at the top of the pressure reducing well, the pressure reducing component comprises a communicating pipe communicated with the outside of the pressure reducing well, and the bottom end of the communicating pipe is connected with a pressure reducing valve. An adjusting structure with a gas flow adjusting function is arranged in the pressure reducing valve, and the pressure reducing valve is connected with the pressure reducing well through a fixing structure; the adjusting structure comprises a first disc and a second disc which are arranged up and down, the second disc is arranged below the first disc and connected with the rotating structure, and gas passing holes are formed in the corresponding positions of the first disc and the second disc. According to the utility model, the disc capable of relatively rotating is arranged in the pressure reducing valve, and the coincidence degree of the gas passing holes in the disc is controlled, so that the passing flow of the gas is controlled, and the purpose of controlling the pressure in the pressure reducing well is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief well pressure relief, in particular to a pressure relief valve used in a pressure relief well. Background Art

[0002] Pressure relief wells are a measure to reduce the soil squeezing effect in the construction of prefabricated pipe piles. The soil squeezing effect caused by pipe pile construction needs to be controlled through scientific and reasonable construction technology. The number of piles will directly affect the spacing of the piles. The smaller the spacing, the more concentrated the soil squeezing effect. The soil squeezing effect of each pile is superimposed on each other, which may lead to a more significant soil squeezing effect. The setting of pressure relief wells can not only improve construction efficiency and reduce resource waste, but also ensure the safety and reliability of urban construction.

[0003] A pressure relief well is a well structure with high sealing performance, and the pressure inside the well needs to be regulated to achieve the purpose of pressure reduction. The pressure relief structure of the existing pressure relief well cannot control the flow rate of gas passing through the well, and cannot more accurately regulate the pressure inside the well. Utility Model Content

[0004] The utility model aims to provide a pressure reducing valve for a pressure reducing well, by arranging a relatively rotatable disc in the pressure reducing valve to control the overlap degree of gas passing holes on the disc, and then controlling the gas passing flow, so as to achieve the purpose of pressure control in the pressure reducing well.

[0005] To achieve the above object, the utility model provides a pressure reducing valve for a pressure reducing well, comprising a pressure reducing assembly arranged on a well cover at the top of the pressure reducing well, the pressure reducing assembly comprising a connecting pipe communicating with the outside of the pressure reducing well, the bottom end of the connecting pipe being connected to the pressure reducing valve, the inside of the pressure reducing valve being provided with a regulating structure having a gas flow regulating function, the pressure reducing valve being connected to the pressure reducing well through a fixed structure;

[0006] The regulating structure comprises a disc 1 and a disc 2 which are arranged up and down. The disc 2 is arranged below the disc 1 and connected to the rotating structure. Gas passing holes are arranged at corresponding positions on the disc 1 and the disc 2.

[0007] Preferably, the connecting pipe includes connecting pipe one and connecting pipe two, connecting pipe one and connecting pipe two are vertically arranged, filter net one is arranged in connecting pipe one, and filter net two is arranged in connecting pipe two.

[0008] Preferably, connecting pipe one is arranged outside the pressure reducing well, connecting pipe one is connected to one end of connecting pipe two, the other end of connecting pipe two is arranged in the pressure reducing well, and the other end of connecting pipe two is connected to the upper end of the pressure reducing valve through a thread.

[0009] Preferably, the inner surface of the pressure reducing valve is provided with a groove, the edge of the second disk is arranged in the groove and rotatably connected to the groove, and the edge of the first disk is fixedly connected to the pressure reducing valve.

[0010] Preferably, the rotating structure includes a motor, the output shaft of the motor is connected to one end of a rotating rod, one end of the rotating rod passes through the pressure reducing valve and is connected to the bottom end of the connecting shaft through a bevel gear, and the top end of the connecting shaft is connected to the middle of the second disc.

[0011] Preferably, a through hole is provided on the pressure reducing valve, a rotating rod is rotatably provided in the through hole, sealing rubber rings are provided at both ends of the through hole, a sealing disk is provided on the rotating rod, a sealing groove is provided in the through hole, the sealing disk is provided in the sealing groove and is rotatably connected to the sealing groove.

[0012] Preferably, the fixing structure includes a plurality of clips for fixing the pressure reducing valve and a fixing assembly for connecting the clips, the pressure reducing valve is connected to the pressure reducing well via the clips, a fixing plate is provided on the clips, and the clips are connected to the inner wall of the pressure reducing well via the fixing plate.

[0013] Preferably, the fixing assembly includes a limiting plate slidably arranged on the buckle, the buckle is provided with a sliding groove matched with the limiting plate, the limiting plate is inserted in the sliding groove and slidably connected with the sliding groove.

[0014] Preferably, a locking hole is provided on the limit plate, a locking rod is provided in the locking hole, a number of clips arranged on the pressure reducing valve are connected through the locking rod, and both ends of the locking rod are locked and connected to the clips through bolts; a pressure pad with the function of increasing friction is provided on the side where the limit plate contacts the sliding groove.

[0015] Therefore, the utility model adopts a pressure reducing valve for a pressure reducing well with the above structure, and controls the overlap degree of the gas passage holes on the two disks by arranging relatively rotatable disks one and two, thereby achieving the purpose of controlling the gas flow rate; the pressure reducing valves of different diameters can be locked and fixed by a sliding limit plate, the limit plate can be locked in the sliding groove by a locking rod and bolts at both ends thereof, and the pressure pad can increase the friction between the limit plate and the sliding groove, so that the locked limit plate is not easy to slide.

[0016] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-sectional view of a pressure reducing assembly according to an embodiment of the present utility model;

[0018] Figure 2 A three-dimensional diagram of a pressure reducing valve according to an embodiment of the utility model;

[0019] Figure 3 It is a front view of a pressure reducing valve according to an embodiment of the utility model;

[0020] Figure 4A top view of a pressure reducing valve according to an embodiment of the utility model;

[0021] Figure 5 A top view of a disc according to an embodiment of the present utility model;

[0022] Figure 6 A top view of a second disk according to an embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of the installation of the pressure reducing valve according to an embodiment of the utility model in a pressure reducing well.

[0024] Reference numerals

[0025] 1. Pressure reducing valve; 2. Connecting pipe; 3. Connecting pipe 1; 4. Connecting pipe 2; 5. Filter screen 1; 6. Filter screen 2; 7. Disc 1; 8. Disc 2; 9. Connecting shaft; 10. Bevel gear; 11. Rotating rod; 12. Motor; 13. Pressure reducing well; 14. Sealing disc; 15. Buckle; 16. Fixed plate; 17. Limit plate; 18. Sliding groove; 19. Locking rod; 20. Bolt; 21. Gas passing hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages disclosed in the embodiments of the utility model clearer, the embodiments of the utility model are further described in detail in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the utility model and are not used to limit the embodiments of the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, where the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0027] It should be noted that the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or devices.

[0028] Like reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" 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 the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1 , Figure 7 As shown, the pressure relief valve for a pressure relief well described in the utility model includes a pressure relief assembly arranged on the top manhole cover of the pressure relief well 13. During the construction of the pressure relief well 13, a foundation pit is first dug, and then the foundation pit support is constructed. The engineering pile foundation used in the construction adopts prestressed concrete pipe piles, and the prefabricated piles have a significant squeezing effect on the surrounding soil. By analyzing its geology and surrounding environment, two strategies can be adopted to effectively reduce the squeezing effect of the pipe piles.

[0032] Countermeasure 1: Deepen the hole depth

[0033] Countermeasure implementation process:

[0034] Measure 1: Increase the depth of the borehole through the borehole construction team and supervise the construction process;

[0035] Measure 2: Conduct on-site inspections to control the speed of pile driver construction to ensure that the completed holes are not affected in depth or collapsed due to the soil squeezing effect of surrounding precast piles caused by failure to timely pile pressing;

[0036] Measure 3: Change the lead hole depth and record monitoring data of the process to analyze the horizontal displacement value. Adjust the lead hole depth through data analysis to locally deepen or reduce the lead hole depth.

[0037] Countermeasure 2: Add pressure relief holes at the edge of the site

[0038] Countermeasure implementation process:

[0039] Measure 1: Communicate with the design institute to reduce the impact of pipe pile construction on existing buildings by setting pressure relief holes between the existing buildings and the site; have the team conduct briefing and on-site supervision on the construction of pressure relief holes, add a row of pressure relief holes on the north side of the site, record monitoring data during the construction process, and analyze the horizontal displacement value;

[0040] Measure 2: Collect the horizontal displacement data on both sides of the pressure relief hole and analyze them.

[0041] like Figure 1 , Figure 2 As shown, the pressure reducing assembly includes a connecting pipe 2 connected to the outside of the pressure reducing well 13, and the bottom end of the connecting pipe 2 is connected to the pressure reducing valve 1. The connecting pipe 2 includes a connecting pipe 1 3 and a connecting pipe 2 4, and the connecting pipe 1 3 and the connecting pipe 2 4 are an integral structure, and the connecting pipe 1 3 and the connecting pipe 2 4 are arranged vertically. The connecting pipe 1 3 is arranged outside the pressure reducing well 13, and the connecting pipe 1 3 is connected to one end of the connecting pipe 2 4. The other end of the connecting pipe 2 4 is arranged in the pressure reducing well 13, and the other end of the connecting pipe 2 4 is connected to the upper end of the pressure reducing valve 1 through a thread. A filter screen 1 5 is arranged in the connecting pipe 1 3, and a filter screen 2 6 is arranged in the connecting pipe 2 4. The mesh size of the filter screen 1 5 is larger than the mesh size of the filter screen 2 6. Through the vertically arranged connecting pipe 2 and the filter screen 1 5 and the filter screen 2 6, small impurities such as gravel can be effectively prevented from falling directly into the pressure reducing valve 1, which has a protective effect on the pressure reducing valve 1.

[0042] The pressure reducing valve 1 is provided with a regulating structure having a gas flow regulating function. The regulating structure includes a disc 1 7 and a disc 2 8 arranged up and down. The disc 2 8 is arranged below the disc 1 7 and is connected to the rotating structure. Figure 5 , Figure 6 As shown, gas passage holes 21 are provided at corresponding positions on disk 1 7 and disk 2 8. The number, size and position of gas passage holes 21 on disk 1 7 and disk 2 8 are the same. A groove is provided on the inner surface of the pressure reducing valve 1, the edge of disk 2 8 is provided in the groove and is rotatably connected to the groove, and the edge of disk 1 7 is welded and fixed to the pressure reducing valve 1. The rotating structure includes a motor 12, the output shaft of the motor 12 is connected to one end of a rotating rod 11, one end of the rotating rod 11 penetrates the pressure reducing valve 1 and is connected to the bottom end of the connecting shaft 9 through a bevel gear 10, and the top end of the connecting shaft 9 is connected to the middle of disk 2 8. A through hole is provided on the pressure reducing valve 1, the rotating rod 11 is rotatably provided in the through hole, both ends of the through hole are provided with sealing rubber rings, a sealing disk 14 is provided on the rotating rod 11, a sealing groove is provided in the through hole, and the sealing disk 14 is provided in the sealing groove and is rotatably connected to the sealing groove.

[0043] The motor 12 drives the rotating rod 11 to rotate, and the rotating rod 11 drives the connecting shaft 9 to rotate through the bevel gear 10, thereby driving the second disk 8 to rotate, so as to adjust the overlap degree of the gas through holes 21 on the second disk 8 and the first disk 7, thereby controlling the gas flow of the pressure reducing valve 1. The sealing rubber ring on the through hole through which the rotating rod 11 passes can increase the sealing performance, and the sealing disk 14 on the rotating rod 11 can increase the sealing performance at the through hole and reduce gas leakage.

[0044] like Figure 3 , Figure 4 As shown, the pressure relief valve 1 is connected to the pressure relief well 13 through a fixed structure. The fixed structure includes a plurality of buckles 15 for fixing the pressure relief valve 1 and a fixed assembly for connecting the buckles 15, and the pressure relief valve 1 is connected to the pressure relief well 13 through the buckles 15. A fixed plate 16 is provided on the buckle 15, and the buckle 15 is locked and connected to the inner wall of the pressure relief well 13 through the fixed plate 16 by bolts. The fixed assembly includes a limit plate 17 slidably arranged on the buckle 15, and a sliding groove 18 adapted to the limit plate 17 is provided on the buckle 15, and the limit plate 17 is inserted in the sliding groove 18 and slidably connected to the sliding groove 18. A locking hole is provided on the limit plate 17, and a locking rod 19 is provided in the locking hole. A plurality of buckles 15 arranged on the pressure relief valve 1 are connected through the locking rod 19, and the two ends of the locking rod 19 are locked and connected to the buckle 15 through bolts 20. A pressure pad having the function of increasing friction is provided on the side of the limit plate 17 in contact with the sliding groove 18.

[0045] The pressure reducing valves 1 of different diameters can be locked and fixed by the sliding limit plate 17, and the limit plate 17 can be locked in the sliding groove 18 by the locking rod 19 and the bolts 20 at both ends thereof. The pressure pad can increase the friction between the limit plate 17 and the sliding groove 18, so that the locked limit plate 17 is not easy to slide.

[0046] Gas sensors are provided in the pressure reducing well 13 and the pressure reducing valve 1. The gas sensor in the pressure reducing well 13 can detect the pressure in the pressure reducing well 13, and the gas sensor in the pressure reducing valve 1 can detect the gas flow. Both gas sensors are wirelessly connected to the existing control system. The control system can monitor the air pressure in the pressure reducing well 13 and the gas flow in the pressure reducing valve 1. At the same time, the control system can also control the operation of the motor 12 to control the gas flow in the pressure reducing valve 1.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A pressure relief valve for a pressure relief well, characterized in that: It includes a pressure reducing assembly arranged on the top manhole cover of the pressure reducing well, the pressure reducing assembly includes a connecting pipe connected to the outside of the pressure reducing well, the bottom end of the connecting pipe is connected to a pressure reducing valve, an adjusting structure with a gas flow regulating function is arranged inside the pressure reducing valve, and the pressure reducing valve is connected to the pressure reducing well through a fixed structure; The regulating structure comprises a disc 1 and a disc 2 which are arranged up and down. The disc 2 is arranged below the disc 1 and connected to the rotating structure. Gas passing holes are arranged at corresponding positions on the disc 1 and the disc 2.

2. A pressure relief valve for a pressure relief well according to claim 1, characterized in that: The connecting pipe comprises a connecting pipe 1 and a connecting pipe 2. The connecting pipe 1 and the connecting pipe 2 are arranged vertically. A filter net 1 is arranged in the connecting pipe 1, and a filter net 2 is arranged in the connecting pipe 2.

3. A pressure relief valve for a pressure relief well according to claim 2, characterized in that: The connecting pipe 1 is arranged outside the pressure reducing well, the connecting pipe 1 is connected to one end of the connecting pipe 2, the other end of the connecting pipe 2 is arranged in the pressure reducing well, and the other end of the connecting pipe 2 is connected to the upper end of the pressure reducing valve through a thread.

4. A pressure relief valve for a pressure relief well according to claim 1, characterized in that: The inner surface of the pressure reducing valve is provided with a groove, the edge of the second disc is arranged in the groove and is rotatably connected with the groove, and the edge of the first disc is fixedly connected with the pressure reducing valve.

5. A pressure relief valve for a pressure relief well according to claim 4, characterized in that: The rotating structure includes a motor, the output shaft of the motor is connected to one end of a rotating rod, one end of the rotating rod penetrates the pressure reducing valve and is connected to the bottom end of the connecting shaft through a bevel gear, and the top end of the connecting shaft is connected to the middle of the second disc.

6. A pressure relief valve for a pressure relief well according to claim 5, characterized in that: A through hole is provided on the pressure reducing valve, a rotating rod is rotatably arranged in the through hole, sealing rubber rings are provided at both ends of the through hole, a sealing disk is provided on the rotating rod, a sealing groove is provided in the through hole, the sealing disk is arranged in the sealing groove and is rotatably connected to the sealing groove.

7. A pressure relief valve for a pressure relief well according to claim 1, characterized in that: The fixing structure includes several buckles for fixing the pressure reducing valve and fixing components for connecting the buckles. The pressure reducing valve is connected to the pressure reducing well through the buckles. A fixing plate is arranged on the buckles. The buckles are connected to the inner wall of the pressure reducing well through the fixing plate.

8. A pressure relief valve for a pressure relief well according to claim 7, characterized in that: The fixing component comprises a limiting plate slidably arranged on the buckle, the buckle is provided with a sliding groove matched with the limiting plate, the limiting plate is inserted in the sliding groove and slidably connected with the sliding groove.

9. A pressure relief valve for a pressure relief well according to claim 8, characterized in that: A locking hole is provided on the limit plate, a locking rod is provided in the locking hole, a plurality of clips arranged on the pressure reducing valve are connected through the locking rod, and both ends of the locking rod are locked and connected with the clips through bolts; a compression pad having the function of increasing friction is provided on the side where the limit plate contacts the sliding groove.

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