Natural gas pipeline valve

Abstract

The utility model relates to the technical field of natural gas valves, and discloses a natural gas pipeline valve which comprises a valve body, an adjusting mechanism is arranged at the top of the valve body, an installation sealing mechanism is arranged in the valve body, and pipe bodies are fixedly connected to the left end and the right end of the valve body respectively. The adjusting mechanism comprises a supporting seat, the supporting seat is arranged at the top of the valve body, the front face of the supporting seat is rotationally connected with an adjusting screw rod, and the surface of the adjusting screw rod is in threaded connection with a door-shaped strip. According to the natural gas pipeline valve, through the arranged adjusting mechanism, a supporting seat is moved downwards, then a conical sealing ring below a supporting ring frame in the supporting seat is driven to seal a conical opening in the valve body when the conical sealing ring faces downwards, then a bolt is rotated, and under the action of threads of a U-shaped seat, threads are screwed upwards into a clamping seat to be tightened; and therefore, the valve element and the valve plate can be installed and replaced, disassembly is convenient during maintenance and replacement, and the maintenance convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas valves, in particular to a natural gas pipeline valve. Background Art

[0002] Natural gas pipeline valves are key equipment used to control the flow of natural gas. They play a vital role in the natural gas supply system. The main types of natural gas pipeline valves include main valves, pre-meter valves, gas nozzles, etc. Each valve has its specific purpose and operation method. Natural gas pipeline valves play a vital role in the natural gas system. Their main functions include controlling gas flow, preventing leakage, protecting personal safety, preventing equipment damage, saving resources, improving system safety and reducing environmental pollution.

[0003] In addition, when using natural gas pipeline valves, since the valve core and valve plate are commonly used and easily damaged parts, they need to be repaired and replaced. During the replacement, since the valve body and the pipe body are connected, they need to be disassembled during the replacement, which makes maintenance more troublesome. Therefore, it is necessary to design a valve that is convenient for replacing the valve core and valve plate. Utility Model Content

[0004] The purpose of the present utility model is to provide a natural gas pipeline valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a natural gas pipeline valve, comprising a valve body, an adjusting mechanism provided on the top of the valve body, an installation sealing mechanism provided inside the valve body, and a pipe body fixedly connected to the left and right ends of the valve body;

[0006] The adjusting mechanism includes a support seat, which is arranged on the top of the valve body, and the front of the support seat is rotatably connected to an adjusting screw, and the surface of the adjusting screw is threadedly connected to a door-shaped strip, and the two ends of the door-shaped strip are respectively slidably connected to the limit rod, and one end of the back of the limit rod is fixedly connected to the left and right ends of the front of the support seat, and the two ends of the back of the door-shaped strip are respectively fixedly connected to the side plates, and the upper and lower ends of the side plates are respectively slidably connected to the guide seat, and the side surface of the guide seat is fixedly connected to the outer side of the support seat. A short shaft is provided inside the side plate, and one end of the short shaft is fixedly connected to the connecting plate. There are two connecting plates, and a support ring frame is fixedly connected between the two connecting plates. The four ends of the support ring frame are respectively slidably connected to the sliding rods, and the upper and lower ends of the sliding rods are respectively fixedly connected to the inside of the support seat.

[0007] Preferably, an oblique slot is provided inside the side plate, and the surface of the short shaft is slidably connected to the inside of the oblique slot, so that the short shaft can slide under the action of the track inside the oblique slot.

[0008] Preferably, a through hole is provided inside the door-shaped strip, and the surface of the limiting rod passes through the through hole provided inside the door-shaped strip.

[0009] Preferably, the mounting sealing mechanism includes a mounting ring, which is arranged inside the top end of the valve body, an I-shaped sealing block is arranged inside the mounting ring, a valve core is arranged inside the I-shaped sealing block, a conical sealing ring is fixedly connected to the middle of the bottom of the support ring frame, a retaining ring is fixedly connected to the middle of the inside of the valve body, the bottom end of the valve core is fixedly connected to the valve plate, the top end of the valve core is fixedly connected to a swivel, the front and rear sides of the valve body are respectively fixedly connected to a U-shaped seat, the U-shaped seat is threadedly connected to a bolt, the surface of the bolt is rotatably connected to a limit plate, the front and rear sides of the support seat are respectively fixedly connected to a clamping seat, the four ends of the bottom of the support seat are respectively fixedly connected to supporting short columns, the surface of the supporting short column is slidably connected to a round seat, the top of the round seat is fixedly connected to a spring, the top of the spring is fixedly connected to the bottom end of the support seat, and the four ends of the top of the valve body are respectively provided with sockets, and the surface of the supporting short column matches the inside of the socket.

[0010] Preferably, a conical opening is provided inside the top end of the valve body, and the surface of the conical sealing ring fits tightly with the inside of the conical opening, so that the conical sealing ring can be used to perform sealing.

[0011] Preferably, a circular hole is opened inside the top of the support seat, the surface of the mounting ring is tightly fitted with the inside of the circular hole, a through hole is opened inside the mounting ring, the surface of the I-shaped sealing block is tightly fitted with the inside of the through hole, and the surface of the valve core is tightly fitted with the inside of the I-shaped sealing block.

[0012] Preferably, a threaded hole is provided inside the holder, and the surface of the bolt is threadedly connected to the inside of the threaded hole, so as to facilitate the threaded tightening installation operation of the bolt and the holder.

[0013] Compared with the prior art, the present invention provides a natural gas pipeline valve with the following beneficial effects:

[0014] 1. The natural gas pipeline valve has an adjusting mechanism, and the I-shaped sealing block, mounting ring and support seat connected to the valve core are located directly above the top of the valve body. The support short column is aligned and inserted into the socket on the top of the valve body to limit the installation and avoid deviation in the installation. The support seat is moved downward to drive the conical sealing ring under the support ring frame in the support seat to seal with the conical port on the valve body when it moves downward. Then, the bolt is turned and threaded upward to the inside of the clamping seat under the thread action of the U-shaped seat for thread tightening. Then, the valve core and valve plate can be installed and replaced, which makes it easy to disassemble during maintenance and replacement, thereby increasing the convenience of maintenance.

[0015] 2. The natural gas pipeline valve, through the installation sealing mechanism provided, rotates the adjusting screw to drive the door-shaped strip to move in the direction close to the support seat under the limiting action of the limiting rod, and then drives the side plate to move under the limit inside the guide seat, driving the short shaft and the connecting plate downward, thereby driving the support ring frame and the conical sealing ring downward, thereby increasing the close fit between the conical sealing ring and the conical mouth, and thus strengthening the sealing effect of the conical sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0017] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 This is a three-dimensional split cross-sectional view of the adjustment mechanism of the utility model;

[0019] Figure 3 This is a three-dimensional diagram of the parts of the adjustment mechanism of the utility model;

[0020] Figure 4 This is a three-dimensional exploded view of the sealing mechanism installed in the utility model;

[0021] Figure 5 A three-dimensional disassembly diagram of the parts for installing the sealing mechanism of the utility model;

[0022] Figure 6 The second three-dimensional diagram of the sealing mechanism parts installed in this utility model;

[0023] Figure 7 Three three-dimensional disassembled diagrams of the sealing mechanism parts installed in this utility model;

[0024] Figure 8 It is a three-dimensional cross-sectional view of the valve body and pipe body of the utility model.

[0025] In the figure: 1. valve body; 2. adjusting mechanism; 21. support seat; 22. adjusting screw; 23. door-shaped strip; 24. limiting rod; 25. side plate; 26. guide seat; 27. short shaft; 28. connecting plate; 29. ​​support ring frame; 291. sliding rod; 3. installation sealing mechanism; 31. mounting ring; 32. I-shaped sealing block; 33. valve core; 34. conical sealing ring; 35. retaining ring; 351. swivel; 36. valve plate; 37. U-shaped seat; 371. limiting plate; 372. bolt; 38. clamping seat; 39. round seat; 391. spring; 392. supporting short column; 4. pipe body. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] The utility model provides the following technical solutions:

[0029] Example 1

[0030] Combine Figures 2 to 8 A natural gas pipeline valve includes a valve body 1, an adjusting mechanism 2 is provided on the top of the valve body 1, a mounting sealing mechanism 3 is provided inside the valve body 1, and a pipe body 4 is fixedly connected to the left and right ends of the valve body 1;

[0031] The adjusting mechanism 2 includes a support seat 21, which is arranged on the top of the valve body 1. The front of the support seat 21 is rotatably connected to an adjusting screw 22, and the surface of the adjusting screw 22 is threadedly connected to a door-shaped strip 23. The two ends of the door-shaped strip 23 are slidably connected to a limit rod 24 inside. One end of the back of the limit rod 24 is fixedly connected to the left and right ends of the front of the support seat 21, and the two ends of the back of the door-shaped strip 23 are fixedly connected to a side plate 25. The upper and lower ends of the side plate 25 are slidably connected to a guide seat 26, and the side surface of the guide seat 26 is fixedly connected to the outer side of the support seat 21. A short shaft 27 is provided inside the side plate 25, and one end of the short shaft 27 is fixedly connected to a connecting plate 28. There are two connecting plates 28, and a support ring frame 29 is fixedly connected between the two connecting plates 28. The four ends of the support ring frame 29 are slidably connected to sliding rods 291. The upper and lower ends of the sliding rod 291 are respectively fixed to the inside of the support seat 21. An oblique groove is provided inside the side plate 25, and the surface of the short shaft 27 is slidably connected to the inside of the oblique groove.

[0032] Furthermore, a through hole is opened inside the door-shaped strip 23, and the surface of the limiting rod 24 passes through the through hole opened inside the door-shaped strip 23. The I-shaped sealing block 32, the mounting ring 31 and the support seat 21 connected to the valve core 33 are located directly above the top of the valve body 1. The aligned supporting short column 392 is inserted into the socket at the top of the valve body 1 for installation limitation and to avoid installation deviation. The support seat 21 is moved downward to drive the conical sealing ring 34 under the support ring frame 29 in the support seat 21 to seal with the conical mouth on the valve body 1 when it is downward. Then, the bolt 372 is turned and threaded upward to the inside of the clamping seat 38 under the thread action of the U-shaped seat 37 for thread tightening. Then, the valve core 33 and the valve plate 36 can be installed and replaced, which makes it convenient to disassemble during maintenance and replacement, thereby increasing the convenience of maintenance.

[0033] Example 2

[0034] See Figure 1-8 , and on the basis of the first embodiment, the installation sealing mechanism 3 is further obtained, which includes a mounting ring 31, the mounting ring 31 is arranged inside the top of the valve body 1, an I-shaped sealing block 32 is arranged inside the mounting ring 31, a valve core 33 is arranged inside the I-shaped sealing block 32, a conical sealing ring 34 is fixedly connected to the middle of the bottom of the support ring frame 29, a retaining ring 35 is fixedly connected to the middle of the valve body 1, a valve plate 36 is fixedly connected to the bottom end of the valve core 33, a swivel 351 is fixedly connected to the top of the valve core 33, and a U-shaped seat 37 is fixedly connected to the front and rear sides of the valve body 1 respectively, and a screw thread is connected inside the U-shaped seat 37. Bolt 372, the surface of bolt 372 is rotatably connected to the limit plate 371, the front and rear sides of the support seat 21 are respectively fixedly connected with the clamping seat 38, the four ends of the bottom of the support seat 21 are respectively fixedly connected with the supporting short column 392, the surface of the supporting short column 392 is slidably connected with the round seat 39, the top of the round seat 39 is fixedly connected with the spring 391, the top of the spring 391 is fixedly connected to the bottom end of the support seat 21, the four ends of the top of the valve body 1 are respectively provided with a socket, the surface of the supporting short column 392 matches the inside of the socket, the top inside of the valve body 1 is provided with a tapered mouth, and the surface of the tapered sealing ring 34 fits tightly with the inside of the tapered mouth.

[0035] Furthermore, a circular hole is provided inside the top of the support seat 21, the surface of the mounting ring 31 is tightly fitted with the inside of the circular hole, a through-hole is provided inside the mounting ring 31, the surface of the I-shaped sealing block 32 is tightly fitted with the inside of the through-hole, the surface of the valve core 33 is tightly fitted with the inside of the I-shaped sealing block 32, a threaded hole is provided inside the holder 38, and the surface of the bolt 372 is threadedly connected to the inside of the threaded hole. The adjusting screw 22 is rotated to drive the door-shaped strip 23 to move in the direction close to the support seat 21 under the limiting action of the limiting rod 24, and then drive the side plate 25 to move under the limit inside the guide seat 26, driving the short shaft 27 and the connecting plate 28 downward, thereby driving the support ring frame 29 and the conical sealing ring 34 downward, thereby increasing the close fitting force between the conical sealing ring 34 and the conical mouth, and thereby enhancing the sealing effect of the conical sealing ring 34.

[0036] When the valve is in operation, if the valve plate 36 and the valve core 33 need to be replaced, the original valve plate 36 and the valve core 33 are removed and replaced with new parts. After the new valve core 33 and valve plate 36 are replaced, the I-shaped sealing block 32, the mounting ring 31 and the support seat 21 connected to the valve core 33 are located just above the top of the valve body 1, and the support short column 392 is aligned and inserted into the insertion hole at the top of the valve body 1 for installation and to prevent the installation from being offset. The support seat 21 is moved downward, thereby driving the conical sealing ring 34 under the support ring frame 29 in the support seat 21 to seal with the conical opening on the valve body 1 when it is downward. Then, the bolt 372 is turned and screwed upward to the inside of the clamping seat 38 under the thread action of the U-shaped seat 37 for thread tightening, and then the valve core 33 and the valve plate 36 can be installed and replaced.

[0037] When the conical sealing ring 34 is inserted into the conical mouth, in order to enhance the sealing effect of the conical sealing ring 34, it is necessary to increase the close fitting force between the conical sealing ring 34 and the conical mouth. The adjusting screw 22 is rotated to drive the door-shaped strip 23 to move in the direction close to the support seat 21 under the limiting action of the limiting rod 24, and then drive the side plate 25 to move under the limiting action inside the guide seat 26, driving the short shaft 27 and the connecting plate 28 downward, thereby driving the support ring frame 29 and the conical sealing ring 34 downward, thereby increasing the close fitting force between the conical sealing ring 34 and the conical mouth, and thus enhancing the sealing effect of the conical sealing ring 34.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A natural gas pipeline valve, comprising a valve body (1), characterized in that: The top of the valve body (1) is provided with an adjusting mechanism (2), the interior of the valve body (1) is provided with a mounting sealing mechanism (3), and the left and right ends of the valve body (1) are respectively fixedly connected with a pipe body (4); The regulating mechanism (2) comprises a support seat (21), the support seat (21) is arranged on the top of the valve body (1), the front of the support seat (21) is rotatably connected to an adjusting screw (22), the surface of the adjusting screw (22) is threadedly connected to a door-shaped strip (23), the inner ends of the door-shaped strip (23) are respectively slidably connected to a limiting rod (24), one end of the back of the limiting rod (24) is fixedly connected to the left and right ends of the front of the support seat (21), the back ends of the door-shaped strip (23) are respectively fixedly connected to side plates (25), and the side plates (25) are The upper and lower ends are respectively slidably connected to a guide seat (26), the side surface of the guide seat (26) is fixedly connected to the outer side of the support seat (21), a short shaft (27) is provided inside the side plate (25), one end of the short shaft (27) is fixedly connected to a connecting plate (28), there are two connecting plates (28), a support ring frame (29) is fixedly connected between the two connecting plates (28), the four ends of the support ring frame (29) are respectively slidably connected to a sliding rod (291), and the upper and lower ends of the sliding rod (291) are respectively fixedly connected to the inside of the support seat (21).

2. A natural gas pipeline valve according to claim 1, characterized in that: An oblique slot is provided inside the side plate (25), and the surface of the short shaft (27) is slidably connected to the inside of the oblique slot.

3. A natural gas pipeline valve according to claim 1, characterized in that: A through hole is provided inside the door-shaped strip (23), and the surface of the limiting rod (24) passes through the through hole provided inside the door-shaped strip (23).

4. A natural gas pipeline valve according to claim 1, characterized in that: The mounting sealing mechanism (3) comprises a mounting ring (31), the mounting ring (31) being arranged inside the top end of the valve body (1), an I-shaped sealing block (32) being arranged inside the mounting ring (31), a valve core (33) being arranged inside the I-shaped sealing block (32), a conical sealing ring (34) being fixedly connected to the middle of the bottom of the support ring frame (29), a retaining ring (35) being fixedly connected to the middle of the inside of the valve body (1), a valve plate (36) being fixedly connected to the bottom end of the valve core (33), a swivel (351) being fixedly connected to the top end of the valve core (33), a U-shaped seat (37) being fixedly connected to the front and rear sides of the valve body (1), and the U The inner thread of the shaped seat (37) is connected with a bolt (372), and the surface of the bolt (372) is rotatably connected to the limit plate (371). The front and rear sides of the support seat (21) are respectively fixedly connected with a clamping seat (38). The four ends of the bottom of the support seat (21) are respectively fixedly connected with a supporting short column (392). The surface of the supporting short column (392) is slidably connected with a round seat (39). The top of the round seat (39) is fixedly connected with a spring (391). The top of the spring (391) is fixedly connected to the bottom of the support seat (21). The four ends of the top of the valve body (1) are respectively provided with a socket, and the surface of the supporting short column (392) matches the inside of the socket.

5. A natural gas pipeline valve according to claim 4, characterized in that: A conical opening is provided inside the top end of the valve body (1), and the surface of the conical sealing ring (34) is tightly fitted to the inside of the conical opening.

6. A natural gas pipeline valve according to claim 4, characterized in that: A circular hole is provided inside the top of the support seat (21), the surface of the mounting ring (31) is tightly fitted with the inside of the circular hole, a through hole is provided inside the mounting ring (31), the surface of the I-shaped sealing block (32) is tightly fitted with the inside of the through hole, and the surface of the valve core (33) is tightly fitted with the inside of the I-shaped sealing block (32).

7. A natural gas pipeline valve according to claim 4, characterized in that: A threaded hole is provided inside the holder (38), and the surface of the bolt (372) is threadedly connected to the inside of the threaded hole.

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