PE valve with blow-off valve convenient to maintain

Abstract

The utility model discloses a PE (polyethylene) valve with a blow-off valve convenient to maintain. The PE valve comprises a main valve, a blow-off pipe, the PE blow-off valve and a shut-off valve, the main valve comprises a valve body, end pipes are arranged at the two ends of the valve body respectively, and diffusion openings are formed in the upper sides of the two end pipes respectively. The lower ends of the two diffusing pipes are connected with the two diffusing ports in a one-to-one correspondence manner; the two PE blow-off valves are mounted at the upper ends of the two blow-off pipes in a one-to-one correspondence manner; and the two shut-off valves are connected in series with the middle sections of the two bleeders in a one-to-one correspondence manner. When a pipe network runs, the main valve and the shut-off valve are normally opened, and the blow-off valve is normally closed; when the blow-off valve cannot be opened or closed tightly, the shut-off valve can be closed to prevent gas leakage; when the blow-off valve needs to be maintained or replaced, the shut-off valve is closed, and after the blow-off valve is maintained or replaced, the judgment valve is opened to recover normal operation; the purpose of replacing the blow-off valve without stopping gas under pressure is achieved, and the problems that in the prior art, gas needs to be stopped when the blow-off valve is maintained and replaced, maintenance is inconvenient, and the maintenance cost is high are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of gas transmission and distribution technology, specifically to a PE valve that facilitates the maintenance of a vent valve. Background Technology

[0002] However, the vent valve in the system is a key safety component, responsible for functions such as gas discharge, pressure regulation and gas replacement. Its reliability directly affects the safety of pipeline operation and maintenance efficiency.

[0003] The widely used polyethylene vent valves (PE vent valves) currently have the following technical problems:

[0004] 1. Although polyethylene is corrosion resistant, it has low mechanical strength. It is prone to embrittlement and cracking under long-term soil stress, temperature changes and chemical media, which can lead to valve sealing failure or structural damage.

[0005] 2. If a valve is damaged (e.g., it cannot be opened or closed tightly), the upstream gas source must be shut off and the residual gas in the pipeline must be emptied before it can be replaced. This can lead to regional gas outages, affecting users' normal gas use, and causing complaints and a decline in customer service satisfaction.

[0006] 3. Gas outage operations require coordination among multiple departments, involving excavation work, safety inspections, and restoration procedures, which are time-consuming, labor-intensive, and result in significant economic losses. Utility Model Content

[0007] Therefore, this utility model provides a PE valve that facilitates maintenance of the vent valve, thereby solving the problems of needing to shut off the gas supply, inconvenience in maintenance, and high maintenance costs when maintaining PE vent valves in the prior art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A PE valve for easy maintenance of a vent valve includes a main valve, vent pipes, PE vent valves, and shut-off valves. The main valve includes a valve body with end pipes at both ends and vent ports on the upper sides of the two end pipes. The lower ends of the two vent pipes are connected to the two vent ports in a one-to-one correspondence. The two PE vent valves are installed at the upper ends of the two vent pipes in a one-to-one correspondence. The two shut-off valves are connected in series in the middle sections of the two vent pipes in a one-to-one correspondence.

[0010] Furthermore, the PE valve also includes an operating sleeve and an operating knob; the upper part of the valve body is provided with a polygonal valve cap, and the lower end of the operating sleeve is provided with a fitting groove adapted to the valve cap; the upper end of the operating sleeve is provided with a polygonal slot, and the lower end of the operating knob is provided with a plug adapted to the slot; the upper end of the operating knob is provided with an operating cap of the same shape as the valve cap.

[0011] Furthermore, the valve cap, the sleeve groove, the slot, and the plug are all quadrilateral structures.

[0012] Furthermore, the operating sleeve includes an intermediate tube section and expanded necks integrally connected to both ends of the intermediate tube section. The sleeve groove and slot are respectively disposed in the two expanded necks. The intermediate tube section is provided with a through hole extending along the axial direction. Reinforcing ribs are provided on the periphery of the connection between the intermediate tube section and the expanded necks.

[0013] Furthermore, the PE valve also includes a protective sleeve, a lower connector, and an upper connector; the protective sleeve is fitted over the valve cap and the operating sleeve, and the inner wall of the protective sleeve does not contact the valve cap and the operating sleeve; the lower end of the protective sleeve is connected to the valve body through the lower connector; the upper connector is located at the upper end of the protective sleeve, and a through hole is provided in the middle of the upper connector; a sealing section is provided in the middle section of the operating knob, the sealing section is provided with a sealing groove, and a sealing ring is provided in the sealing groove; the sealing section is rotatably assembled in the through hole, and the plug is inserted into the slot after passing through the through hole.

[0014] Furthermore, the PE valve also includes a fixing bracket, the middle part of which is fixed to the protective sleeve, and the two ends of which are respectively fixed to the two vent pipes.

[0015] This utility model has the following advantages:

[0016] During pipeline operation, the main valve and shut-off valve are normally open, and the vent valve is normally closed. When the vent valve cannot be opened or closed tightly, the shut-off valve can be closed to prevent gas leakage. When the vent valve needs maintenance or replacement, the shut-off valve is closed, the vent valve is maintained or replaced, and then the judgment valve is opened to restore normal operation. Using the PE valve of this utility model, the purpose of replacing the vent valve under pressure without interrupting gas supply is achieved, effectively solving the problems of gas shutdown, inconvenience, and high maintenance costs in the prior art when maintaining or replacing the vent valve.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0020] Figure 1 A schematic diagram of the structure of a PE valve that facilitates maintenance of a vent valve is provided for an embodiment of this utility model;

[0021] Figure 2 A cross-sectional view of a PE valve that facilitates maintenance of a vent valve, as provided in an embodiment of this utility model.

[0022] Figure 3 A cross-sectional view of the main valve of a PE valve for easy maintenance of a vent valve, provided as an embodiment of this utility model;

[0023] Figure 4 A schematic diagram of the structure of the operating sleeve of a PE valve for convenient maintenance of a vent valve provided in this embodiment of the present utility model;

[0024] Figure 5 A cross-sectional view of the operating sleeve of a PE valve for convenient maintenance of a vent valve, provided as an embodiment of this utility model;

[0025] Figure 6 A cross-sectional view of the operating knob of a PE valve for convenient maintenance of a vent valve, provided as an embodiment of this utility model;

[0026] Figure 7 for Figure 2 Enlarged view of A in the middle;

[0027] Figure 8 for Figure 2 A magnified view of B in the middle.

[0028] In the diagram: 1. Main valve; 11. Valve body; 12. End pipe; 13. Vent port; 14. Valve cap; 15. Top protrusion; 16. Valve stem; 17. Valve core; 2. Vent pipe; 3. PE vent valve; 4. Shut-off valve; 5. Operating sleeve; 51. Sleeve groove; 52. Slot; 53. Intermediate pipe section; 54. Neck expansion; 55. Through hole; 56. Reinforcing rib; 6. Operating knob; 61. Connector; 62. Operating cap; 63. Sealing section; 64. Sealing groove; 7. Protective sleeve; 8. Lower connector; 9. Upper connector; 10. Fixing bracket. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 8 As shown, this embodiment provides a PE valve for convenient maintenance of the vent valve, including a main valve 1, vent pipes 2, PE vent valves 3, and shut-off valves 4. In this embodiment, the main valve 1 is a ball valve, but other types of on / off valves can also be used. The main valve 1 includes a valve body 11, with end pipes 12 at both ends of the valve body 11, and vent ports 13 on the upper side of each end pipe 12. The lower ends of the two vent pipes 2 are connected to the two vent ports 13 respectively. The two PE vent valves 3 are installed at the upper ends of the two vent pipes 2 respectively. The two shut-off valves 4 are connected in series in the middle section of the two vent pipes 2 respectively.

[0031] During pipeline operation, main valve 1 and shut-off valve 4 are normally open, while the vent valve is normally closed. When the vent valve cannot be opened or closed tightly, shut-off valve 4 can be closed to prevent gas leakage. When the vent valve needs maintenance or replacement, shut-off valve 4 is closed, the vent valve is maintained or replaced, and then the judgment valve is opened to restore normal operation. Using the PE valve of this utility model, the purpose of replacing the vent valve under pressure without interrupting gas supply is achieved, effectively solving the problems of gas outage, inconvenience, and high maintenance costs in the prior art when maintaining or replacing the vent valve.

[0032] In existing technology, to facilitate the operation of the main valve 1, an extension rod is usually installed on the valve to extend it upwards to a certain height. A wrench head is installed at the upper end of the extension rod. This extension rod is generally fixed to the valve by welding, requiring additional construction equipment, steps, and manpower. In this embodiment, the PE valve also includes an operating sleeve 5 and an operating knob 6. A polygonal valve cap 14 is provided on the upper part of the valve body 11, and a fitting groove 51 adapted to the valve cap 14 is provided at the lower end of the operating sleeve 5. A polygonal slot 52 is provided at the upper end of the operating sleeve 5, and a connector 61 adapted to the slot 52 is provided at the lower end of the operating knob 6. An operating cap 62 with the same shape as the valve cap 14 is provided at the upper end of the operating knob 6. Thus, it can extend upwards to a certain height without requiring welding, simplifying the construction steps and saving construction equipment and manpower. For example, the valve cap 14, the sleeve groove 51, the slot 52 and the plug 61 are all quadrilateral structures. In particular, the operating cap 62 has the same shape as the valve cap 14, which makes it convenient to operate the main valve 1 with a uniform wrench.

[0033] In existing technologies, to avoid the problem of the extension rod being obstructed from direct soil pressure, a protective sleeve is generally installed on the extension rod, with the lower end of the protective sleeve welded to the upper part of the valve body 11. In this application, the PE valve also includes a protective sleeve 7, a lower connector 8, and an upper connector 9; the protective sleeve 7 is fitted over the valve cap 14 and the operating sleeve 5, and the inner wall of the protective sleeve 7 does not contact the valve cap 14 or the operating sleeve 5; the lower end of the protective sleeve 7 is connected to the valve body 11 through the lower connector 8; the upper connector 9 is located at the upper end of the protective sleeve 7, and a through hole is provided in the middle of the upper connector 9; a sealing section 63 is provided in the middle section of the operating knob 6, the sealing section 63 is provided with a sealing groove 64, and a sealing ring is provided in the sealing groove 64; the sealing section 63 is rotatably assembled in the through hole, and the plug connector 61 passes through the through hole and is inserted into the slot 52. Thus, welding is no longer required when installing the protective sleeve (the protective sleeve 7 in this embodiment), which facilitates construction. For example, the lower connector 8 is an annular part with a central hole. The wall of the central hole is provided with an internal thread, and it is threaded to the top protrusion 15 of the valve body 11 (which houses the valve stem 16 connecting the valve cap 14 and the valve core 17). The outer periphery of the top protrusion 15 is provided with an external thread, and the lower connector 8 is screwed onto the outer periphery of the top protrusion 15 (the lower connector 8 is screwed on first, and then the valve cap 14 is installed). For example, the protective sleeve 7 is threaded to the lower connector 8 and the upper connector 9.

[0034] In this embodiment, the operating sleeve 5 includes an intermediate tube section 53 and expanded necks 54 integrally connected to both ends of the intermediate tube section 53. Grooves 51 and slots 52 are respectively disposed within the two expanded necks 54. A through hole 55 extending along the axial direction is provided in the intermediate tube section 53. Reinforcing ribs 56 are provided on the periphery of the connection between the intermediate tube section 53 and the expanded necks 54. The use of a hollow operating sleeve 5 saves material; the expanded necks 54 are provided to accommodate larger grooves and slots 52; the reinforcing ribs 56 enhance the connection strength between the thinner intermediate tube section 53 and the thicker expanded necks 54, avoiding the problem of reduced structural strength due to stress concentration caused by diameter change.

[0035] Generally, PE valves also include a mounting bracket 10, the middle of which is fixed to the protective sleeve 7, and the two ends of the mounting bracket 10 are respectively fixed to two vent pipes 2. The mounting bracket 10 serves two purposes: firstly, it connects the protective sleeve and the vent pipes 2 into one unit, strengthening the structural strength; secondly, it serves as a nameplate indicating the model number.

[0036] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0037] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

Claims

1. A PE valve with a convenient maintenance bleed valve, characterized in that, The utility model provides a kind of PE valve, including main valve (1), diffusion pipe (2), PE diffusion valve (3) and shut-off valve (4);The main valve (1) includes valve body (11), and the both ends of the valve body (11) are provided with end pipe (12) respectively, and the upper side of two end pipes (12) is provided with diffusion port (13) respectively;The lower end of two diffusion pipes (2) is connected with two diffusion ports (13) one by one respectively;Two PE diffusion valves (3) are installed in the upper end of two diffusion pipes (2) one by one;Two shut-off valves (4) are connected in series in the middle section of two diffusion pipes (2) one by one.

2. The PE valve with easy maintenance bleed valve according to claim 1, characterized in that The PE valve further includes an operating sleeve (5) and an operating knob (6); the upper portion of the valve body (11) is provided with a polygonal valve cap (14), the lower end of the operating sleeve (5) is provided with a sleeving groove (51) that is adapted to the valve cap (14); the upper end of the operating sleeve (5) is provided with a polygonal insertion slot (52), and the lower end of the operating knob (6) is provided with a plug (61) that is adapted to the insertion slot (52); the upper end of the operating knob (6) is provided with an operating cap (62) that has the same shape as the valve cap (14).

3. The PE valve with easy service bleed valve according to claim 2, characterized in that The valve cap (14), the sleeving groove (51), the insertion slot (52), and the plug (61) are all quadrangular structures.

4. The PE valve of claim 2, wherein, The operating sleeve (5) includes a middle pipe section (53) and an expanded neck portion (54) integrally connected to both ends of the middle pipe section (53), the sleeving groove (51) and the insertion slot (52) are respectively arranged in the two expanded neck portions (54), the middle pipe section (53) is provided with a through hole (55) extending along the axial direction, and the periphery of the connection between the middle pipe section (53) and the expanded neck portion (54) is provided with a reinforcing rib (56).

5. The PE valve of claim 2, wherein, The PE valve further includes a protective sleeve (7), a lower connector (8), and an upper connector (9); the protective sleeve (7) is sleeved outside the valve cap (14) and the operating sleeve (5), and the inner wall of the protective sleeve (7) does not contact the valve cap (14) and the operating sleeve (5); the lower end of the protective sleeve (7) is connected to the valve body (11) through the lower connector (8); the upper connector (9) is arranged at the upper end of the protective sleeve (7), and the middle portion of the upper connector (9) is provided with a perforation; the plug (61) is inserted into the insertion slot (52) through the perforation.

6. The PE valve of claim 5, wherein, The PE valve further includes a fixing frame (10), the middle portion of the fixing frame (10) is fixed to the protective sleeve (7), and the both ends of the fixing frame (10) are respectively fixed to the two diffusion pipes (2).

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