High safety direct-buried gas gate valve

Abstract

The utility model discloses a high safety direct -buried gas gate valve, including the casing, the casing inside middle part swing clamping is provided with the flashboard, the casing upper end is swingly provided with the screw rod through the bearing, the flashboard upper end is fixedly provided with the connecting block, the connecting block is through the screw thread swing sleeve and is established in the screw rod outside surface, the casing surface both sides are provided with the first flange, the casing surface both sides are provided with the connecting pipe through the first flange, the connecting pipe with the casing surface are provided with detection mechanism outside the first flange, detection mechanism includes the second flange, fixed ring, gas detection device, the connecting pipe with the casing surface all are fixedly provided with the second flange, be provided with the fixed ring between the second flange. The utility model for use effect is good, and the flange connecting place of gate valve is added gas detection device, can discover alarm in time when the flange connecting place of gate valve leaks, can reduce the security hidden danger thereby.

Description

Technical Field

[0001] This utility model relates to the field of gas gate valve technology, specifically a high-safety direct-buried gas gate valve. Background Technology

[0002] The direct-buried gas gate valve is a type of valve that can be directly buried underground without the need for a traditional valve well. It achieves remote opening and closing through a concealed stem design, a fully rubber-coated gate, and an extended transmission rod, and is suitable for on / off control of gas pipelines.

[0003] In existing technologies, the common connection methods for such direct-buried gas gate valves to pipelines include flange connection and electrofusion connection.

[0004] When using flange connections, there is a higher risk of leakage compared to the entire valve body. Thermal deformation or mechanical vibration of the pipeline may cause leakage at the flange connection of the gate valve. Since such valves are buried underground, leakage at the valve flange may not be detected in time, which may pose a safety hazard. Therefore, a high-safety direct-buried gas gate valve is needed to address this issue. Utility Model Content

[0005] The purpose of this invention is to provide a high-safety direct-buried gas gate valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-safety direct-buried gas gate valve, comprising a housing, a gate plate movably engaged in the middle of the inner side of the housing, a screw rod movably mounted on the upper end of the housing via a bearing, a connecting block fixedly mounted on the upper end of the gate plate, the connecting block being threadedly fitted onto the outer surface of the screw rod, first flanges mounted on both sides of the housing surface, connecting pipes mounted on both sides of the housing surface via the first flanges, a detection mechanism mounted on the connecting pipes and the housing surface outside the first flanges, the detection mechanism comprising a second flange, a fixing ring, and a gas detection device, the second flanges being fixedly mounted on both the connecting pipes and the housing surface, a fixing ring being mounted between the second flanges, and a gas detection device being fixedly mounted on the surface of the second flanges. The gas detection device of this device is an oxide semiconductor type, the principle of which is to detect the gas concentration by changing the resistance value through the interaction between the semiconductor material and the gas. Since the gas detection device is a mature means in the prior art, this application will not elaborate on its detection principle.

[0007] Preferably, the upper end of the housing is provided with a transmission mechanism for driving the screw to rotate. The transmission mechanism includes an extension section, an extension shaft, a connecting section, a handwheel, a first transmission sleeve, a first transmission shaft, a second transmission sleeve, and a second transmission shaft. The upper end of the housing is provided with an extension section, and the extension shaft is movably mounted inside the extension section via a bearing. The upper end of the extension section is provided with a connecting section, and the handwheel is movably mounted inside the connecting section via a rotating shaft. The lower end of the extension shaft is fixedly provided with a first transmission sleeve, the upper end of the screw is fixedly provided with a first transmission shaft, the upper end of the extension shaft is fixedly provided with a second transmission sleeve, and the lower end of the rotating shaft where the handwheel is located is fixedly provided with a second transmission shaft. Since the burial depth of the housing of this device is different each time construction is carried out, and the number of extension sections can be increased as needed, the length of the extension sections can be changed, so that the device can adapt to construction requirements of different depths. This allows the handle of the device to extend above the ground, thereby improving the applicability of the device.

[0008] Preferably, the outer surfaces of the housing, extension section, and connecting section are all provided with a third flange. The housing, extension section, and connecting section can be fixedly connected together through the third flange. After being connected together, the first transmission sleeve, the first transmission shaft, the second transmission sleeve, and the second transmission shaft are inserted into each other. The handwheel and the screw drive can also be connected together so that when the handwheel rotates, it can drive the screw to rotate as well. At the same time, multiple extension sections of this device can be repeatedly installed as needed.

[0009] Preferably, a wire is fixedly installed on one side of the gas detection device. The power supply and signal transmission location of the gas detection device can be led out to the ground through the wire, so as to facilitate the connection of power supply and wireless communication equipment, so as to facilitate timely alarm when the gas detection device detects a gas leak.

[0010] Preferably, the outer surface of the fixing ring is provided with a rubber pad. The fixing ring of this device consists of two semi-circular rings. After being connected by screws and the second flange, the rubber pads on the surface of the fixing rings press against each other, which can ensure the sealing between the fixing ring and the second flange, between the fixing rings themselves, and between the fixing ring and the housing and pipes.

[0011] Preferably, a through hole is provided in the middle of the gate plate. Since the screw of this device does not move when it rotates, the connecting block and the gate plate are driven to move up through the thread. In order to prevent motion interference between the gate plate and the screw, a through hole is provided to facilitate the upward movement of the gate plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model fixes the first flange between the second flange and the fixing ring, and uses the second flange and the fixing ring to form a relatively sealed environment on the outside of the first flange. Then, as long as the first flange is found to leak, the gas detection device will detect and alarm in time, thereby reducing safety hazards.

[0014] 2. Since the burial depth of the shell of this device is different each time it is constructed, the device can increase the number of extension sections as needed. The sections are connected and fixed to each other through the third connecting flange. The number of extension sections can be customized, thereby changing the length of the extension sections. This allows the device to adapt to construction requirements at different depths, and the handle of the device can be extended above the ground, thereby improving the applicability of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a high-safety direct-buried gas gate valve according to the present invention;

[0016] Figure 2 This is a disassembled view of the fixing ring in a high-safety direct-buried gas gate valve according to this utility model;

[0017] Figure 3 This is a cross-sectional view of a high-safety direct-buried gas gate valve according to the present invention. Figure 1 ;

[0018] Figure 4 This is a cross-sectional view of a high-safety direct-buried gas gate valve according to the present invention. Figure 2 .

[0019] In the diagram: 1. Housing; 2. Gate; 3. Screw; 4. Connecting block; 5. First flange; 6. Connecting pipe; 7. Second flange; 8. Fixing ring; 9. Gas detection device; 10. Extension section; 11. Extension shaft; 12. Connecting section; 13. Handwheel; 14. First transmission sleeve; 15. First transmission shaft; 16. Second transmission sleeve; 17. Second transmission shaft; 18. Third flange; 19. Wire; 20. Through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4This utility model provides a technical solution: a high-safety direct-buried gas gate valve, including a housing 1. A gate plate 2 is movably engaged in the middle of the inner side of the housing 1. A screw 3 is movably mounted on the upper end of the housing 1 via a bearing. A connecting block 4 is fixedly mounted on the upper end of the gate plate 2. The connecting block 4 is movably sleeved on the outer surface of the screw 3 via a thread. First flanges 5 are provided on both sides of the surface of the housing 1. Connecting pipes 6 are provided on both sides of the surface of the housing 1 via the first flanges 5. A detection mechanism is provided on the connecting pipes 6 and the surface of the housing 1 outside the first flanges 5. The detection mechanism includes a second flange 7, a fixing ring 8, and a gas detection device 9. The second flange 7 is fixedly mounted on both the connecting pipe 6 and the surface of the housing 1. A fixing ring 8 is provided between the second flanges 7. The gas detection device 9 is fixedly mounted on the surface of the second flange 7. The gas detection device 9 of this device is an oxide semiconductor type. Its principle is to detect the gas concentration by changing the resistance value through the interaction between the semiconductor material and the gas. Since the gas detection device 9 is a mature means in the prior art, its detection principle will not be elaborated in detail in this application.

[0022] The upper end of the housing 1 is provided with a transmission mechanism for driving the screw 3 to rotate. The transmission mechanism includes an extension section 10, an extension shaft 11, a connecting section 12, a handwheel 13, a first transmission sleeve 14, a first transmission shaft 15, a second transmission sleeve 16, and a second transmission shaft 17. The upper end of the housing 1 is provided with an extension section 10, and the extension shaft 11 is movably mounted inside the extension section 10 via a bearing. The upper end of the extension section 10 is provided with a connecting section 12, and the handwheel 13 is movably mounted inside the connecting section 12 via a rotating shaft. The lower end of the extension shaft 11 is fixedly provided with a first transmission sleeve 17. 4. A first transmission shaft 15 is fixedly installed at the upper end of the screw 3, a second transmission sleeve 16 is fixedly installed at the upper end of the extension shaft 11, and a second transmission shaft 17 is fixedly installed at the lower end of the shaft where the handwheel 13 is located. Since the burial depth of the housing 1 of this device is different each time construction is carried out, the number of extension sections 10 can be increased as needed, thereby changing the length of the extension sections 10. This allows the device to adapt to construction requirements at different depths, and the handle of the device can be extended above the ground, thereby improving the applicability of the device.

[0023] The outer surfaces of the housing 1, extension 10, and connecting section 12 are all provided with third flanges 18. The housing 1, extension 10, and connecting section 12 can be fixedly connected together through the third flanges 18. After being connected together, the first transmission sleeve 14, the first transmission shaft 15, the second transmission sleeve 16, and the second transmission shaft 17 are inserted into each other. The handwheel 13 and the screw 3 can also be connected together so that when the handwheel 13 rotates, it can drive the screw 3 to rotate as well. At the same time, multiple extension sections 10 of this device can be repeatedly installed as needed.

[0024] A wire 19 is fixedly installed on one side of the surface of the gas detection device 9. The power supply and signal transmission position of the gas detection device 9 can be led out to the ground through the wire 19, so as to facilitate the connection of power supply and wireless communication equipment, so as to facilitate the timely alarm when the gas detection device 9 detects a gas leak.

[0025] The outer surface of the fixing ring 8 is provided with a rubber pad. The fixing ring 8 of this device consists of two semi-circular rings. After being connected by screws and the second flange 7, the rubber pads on the surface of the fixing ring 8 are pressed against each other, which can ensure the sealing between the fixing ring 8 and the second flange 7, between the fixing ring 8 and each other, and between the fixing ring 8 and the housing 1 and the pipe.

[0026] The gate plate 2 has a through hole 20 in the middle. Since the screw 3 of this device does not move when it rotates, the connecting block 4 and the gate plate 2 are moved upward by the thread. In order to prevent motion interference between the gate plate 2 and the screw 3, the through hole 20 is provided to facilitate the upward movement of the gate plate 2.

[0027] Working principle: When using this device, the first flange 5 is fixed between the second flange 7 and the fixing ring 8. The second flange 7 and the fixing ring 8 form a relatively sealed environment outside the first flange 5. Subsequently, as soon as the first flange 5 is found to leak, the gas detection device 9 will detect and alarm in time, thereby reducing safety hazards.

[0028] It should be noted that the sealing requirements between the fixed ring 8 and the second flange 7 are not high. Even if there is a slight leak, as long as gas leaks out at the first flange 5, the gas cannot be discharged in time between the fixed ring 8 and the second flange 7 due to the relatively sealed space between the fixed ring 8 and the second flange 7. The gas will quickly reach the alarm threshold of the gas detection device 9.

[0029] Furthermore, since the burial depth of the housing 1 of this device varies with each construction operation, the device can increase the number of extension sections 10 as needed. These sections are then connected and fixed together via the third connecting flange. The number of extension sections 10 can be customized, thereby changing their length. This allows the device to adapt to construction requirements at different depths, enabling the handle to extend above ground level and thus increasing its applicability. After being connected, the first transmission sleeve 14, the first transmission shaft 15, the second transmission sleeve 16, and the second transmission shaft 17 are interlocked to complete the transmission of the handwheel 13 and the screw 3.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-safety direct-buried gas gate valve, comprising a housing (1), characterized in that: A gate (2) is movably engaged in the middle of the inner side of the housing (1). A screw (3) is movably mounted on the upper end of the housing (1) via a bearing. A connecting block (4) is fixedly mounted on the upper end of the gate (2). The connecting block (4) is movably mounted on the outer surface of the screw (3) via a thread. A first flange (5) is provided on both sides of the surface of the housing (1). A connecting pipe (6) is provided on both sides of the surface of the housing (1) via the first flange (5). A detection mechanism is provided on the connecting pipe (6) and the surface of the housing (1) outside the first flange (5). The detection mechanism includes a second flange (7), a fixing ring (8), and a gas detection device (9). A second flange (7) is fixedly mounted on both the connecting pipe (6) and the surface of the housing (1). A fixing ring (8) is provided between the second flanges (7). A gas detection device (9) is fixedly mounted on the surface of the second flange (7).

2. The high-safety direct-buried gas gate valve according to claim 1, characterized in that: The upper end of the housing (1) is provided with a transmission mechanism for driving the screw (3) to rotate. The transmission mechanism includes an extension section (10), an extension shaft (11), a connecting section (12), a handwheel (13), a first transmission sleeve (14), a first transmission shaft (15), a second transmission sleeve (16), and a second transmission shaft (17). The upper end of the housing (1) is provided with an extension section (10). The extension shaft (11) is movably arranged inside the extension section (10) through a bearing. The upper end of the extension section (10) is provided with a connecting section (12). The handwheel (13) is movably arranged inside the connecting section (12) through a rotating shaft. The lower end of the extension shaft (11) is fixedly provided with a first transmission sleeve (14). The upper end of the screw (3) is fixedly provided with a first transmission shaft (15). The upper end of the extension shaft (11) is fixedly provided with a second transmission sleeve (16). The lower end of the rotating shaft where the handwheel (13) is located is fixedly provided with a second transmission shaft (17).

3. A high-safety direct-buried gas gate valve according to claim 2, characterized in that: The outer surfaces of the housing (1), extension section (10), and connecting section (12) are all provided with a third flange (18).

4. A high-safety direct-buried gas gate valve according to claim 1, characterized in that: A wire (19) is fixedly installed on one side of the surface of the gas detection device (9).

5. A high-safety direct-buried gas gate valve according to claim 1, characterized in that: A rubber pad is provided on the outer surface of the fixing ring (8).

6. A high-safety direct-buried gas gate valve according to claim 1, characterized in that: The gate (2) has a through hole (20) in the middle.

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