CN219673610U

CN219673610U - Natural gas conveying pipeline pressure reducing valve

Info

Publication number: CN219673610U
Application number: CN202321156377.7U
Authority: CN
Inventors: 孔玉倩; 段玉梅
Original assignee: Tianjin Zenith Oil&gas Engineering Co ltd
Current assignee: Tianjin Zenith Oil&gas Engineering Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-09-12
Anticipated expiration: 2033-05-15

Abstract

The utility model discloses a reducing valve of a natural gas conveying pipeline, which comprises a reducing valve main body, wherein an inlet pipe is fixedly communicated with the left side of the reducing valve main body, a discharge pipe is fixedly communicated with the right side of the reducing valve main body, one end of the inlet pipe is fixedly communicated with an air inlet pipe through a first sealing communication mechanism, and the tail end of the discharge pipe is fixedly communicated with an air outlet pipe through a second sealing communication mechanism. The utility model has simple operation, the first annular groove on the surface of the first communication pipe is sleeved with the first sealing ring, then the communication pipe and the sleeved first sealing ring are placed in the inner cavity of the inlet pipe, meanwhile, the first threaded column penetrates through the side surface of the first fixed ring, the first threaded column is fixed on the surface of the first fixed ring by rotating the first nut, the fixed communication between the air inlet pipe and the inlet pipe is ensured, and meanwhile, the plurality of first sealing rings are arranged, the sealing connection stability of the first sealing ring and the inlet pipe is ensured, and the air leakage condition is reduced.

Description

Natural gas conveying pipeline pressure reducing valve

Technical Field

The utility model belongs to the technical field of pressure reducing valves, and particularly relates to a pressure reducing valve for a natural gas conveying pipeline.

Background

The natural gas pressure reducing valve is used for equipment for controlling the pressure behind the valve, the work of the pressure reducing valve is controlled by the pressure behind the valve, and when the pressure sensor detects that the pressure of the valve is indicated to be increased, the opening of the valve of the pressure reducing valve is reduced; when the pressure is reduced after the pressure relief valve is detected, the pressure relief valve opening is increased to meet the control requirement, and the pressure reduction ratio of the vapor pressure relief valve must be somewhat higher than the system value, it should be able to respond to either the positive or negative control signal even at maximum or minimum flow rates.

At present, in the use process of the pressure reducing valve, in the process of communicating with a pipeline, the air leakage condition of the joint of the pipeline and the pressure reducing valve is easy to occur, the potential safety hazard is increased, and the pressure reducing valve is inconvenient for workers to use.

Disclosure of Invention

The utility model aims to provide a reducing valve of a natural gas conveying pipeline, which aims to solve the technical problems in the background technology.

In order to achieve the above purpose, the specific technical scheme of the utility model is as follows: the utility model provides a natural gas delivery pipeline relief pressure valve, includes the relief pressure valve main part, the fixed intercommunication in relief pressure valve main part left side has the admission pipe, the fixed intercommunication in relief pressure valve main part right side has the discharge pipe, admission pipe one end is through the fixed intercommunication of first sealed intercommunication mechanism with the intake pipe, the discharge pipe end is through the fixed intercommunication of second sealed intercommunication mechanism with the outlet duct;

the first sealing communication mechanism comprises a first fixed ring, a first threaded column, a first nut, a first communication pipe and a first sealing ring, wherein the first fixed ring is fixedly connected to the left end surface of the inlet pipe, the first threaded column penetrates through the surface of the first fixed ring, the first threaded column is fixedly connected with the end surface of the air inlet pipe, the first nut is sleeved on the surface of the first threaded column in a threaded manner, the air inlet pipe is fixedly communicated with the first communication pipe, a first annular groove is formed in the surface of the first communication pipe, and the first sealing ring is sleeved in the first annular groove.

Preferably, the left end of the inlet pipe is connected with a first sealing gasket in a clamping mode, and the left side surface of the first sealing gasket is attached to the right end surface of the air inlet pipe.

Preferably, the number of the first annular grooves is a plurality, the adjacent first annular grooves are distributed at equal intervals, and the outer side surface of the first sealing ring sleeved on the surface of the first annular groove is tightly attached to the inner wall of the inlet pipe.

Preferably, the second sealing communication mechanism comprises a second fixed ring, a second threaded column, a second nut, a second communicating pipe and a second sealing ring, wherein the second fixed ring is fixedly connected to the tail end surface of the discharge pipe, the second threaded column penetrates through the surface of the second fixed ring, the right end of the second threaded column is fixedly connected with the end surface of the air outlet pipe, the second nut is in threaded sleeve connection with the surface of the left end of the second threaded column, the left end of the air outlet pipe is fixedly communicated with the second communicating pipe, a second annular groove is formed in the surface of the second communicating pipe, and the second sealing ring is in sleeve connection with the second annular groove.

Preferably, the right end of the discharge pipe is connected with a second sealing pad in a clamping mode, and the right side surface of the second sealing pad is attached to the left end surface of the air outlet pipe.

Preferably, the number of the second annular grooves is a plurality, the adjacent second annular grooves are distributed at equal intervals, and the outer side surface of the second sealing ring sleeved on the surface of the second annular groove is tightly attached to the inner wall of the discharge pipe.

The reducing valve of the natural gas conveying pipeline has the following advantages:

1. this natural gas delivery pipeline relief pressure valve, easy operation has cup jointed first sealing washer in through with the first ring channel of first communication pipe surface, then place communicating pipe and first sealing washer of cup jointing at the entering pipe inner chamber, first screw thread post runs through first solid fixed ring side surface simultaneously, fix first screw thread post at first solid fixed ring surface through rotatory first nut, guarantee intake pipe and the fixed intercommunication of entering pipe set up a plurality of first sealing washers simultaneously, guarantee first sealing washer and the sealing connection stability of entering pipe, reduce the gas leakage condition.

2. The second annular groove surface that sets up through the second communicating pipe surface has cup jointed the second sealing washer, and second communicating pipe and second sealing washer all cup joint at the discharge pipe inner chamber, improve the connection leakproofness of second communicating pipe and discharge pipe, avoid appearing the gas leakage condition, discharge pipe right-hand member block is connected with the second and seals up the pad, the laminating of second sealed pad right side surface and outlet duct left end surface improves the leakproofness of discharge pipe and outlet duct junction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic overall cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of a portion of FIG. 2A in accordance with the present utility model;

FIG. 4 is an enlarged schematic view of a portion of the utility model at B in FIG. 2;

the figure indicates: 1. a pressure reducing valve body; 2. an inlet tube; 3. a discharge pipe; 4. a first communication pipe; 401. a first annular groove; 5. an air inlet pipe; 6. a first seal ring; 7. a first fixing ring; 8. a first threaded post; 9. a first nut; 10. an air outlet pipe; 11. a first gasket; 12. a second seal ring; 13. a second communicating pipe; 1301. a second annular groove; 14. a second fixing ring; 15. a second threaded post; 16. a second nut; 17. and a second gasket.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "vertical," "horizontal," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

For a better understanding of the objects, structures and functions of the present utility model, a relief valve for a natural gas delivery line according to the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-4, the reducing valve for the natural gas conveying pipeline comprises a reducing valve main body 1, wherein an inlet pipe 2 is fixedly communicated with the left side of the reducing valve main body 1, a discharge pipe 3 is fixedly communicated with the right side of the reducing valve main body 1, one end of the inlet pipe 2 is fixedly communicated with an air inlet pipe 5 through a first sealing communication mechanism, and the tail end of the discharge pipe 3 is fixedly communicated with an air outlet pipe 10 through a second sealing communication mechanism;

the air inlet pipe 5 is connected with the pressure reducing valve main body 1 through the first sealing communication mechanism, the tightness is improved, the first sealing communication mechanism comprises a first fixed ring 7, a first threaded column 8, a first nut 9, a first communication pipe 4 and a first sealing ring 6, the first fixed ring 7 is fixedly connected to the left end surface of the inlet pipe 2, the first threaded column 8 penetrates through the surface of the first fixed ring 7, the first threaded column 8 is fixedly connected with the end surface of the air inlet pipe 5, the first nut 9 is in threaded sleeve connection with the surface of the first threaded column 8, the air inlet pipe 5 is fixedly communicated with the first communication pipe 4, the first annular groove 401 is formed in the surface of the first communication pipe 4, the first sealing ring 6 is sleeved in the first annular groove 401, then the first sealing ring 6 is placed in the inner cavity of the inlet pipe 2 through the first communicating pipe and the sleeve connection, the first threaded column 8 penetrates through the side surface of the first fixed ring 7, the first threaded column 8 is fixedly connected to the surface of the first fixed ring 7 through rotating the first nut 9, the air inlet pipe 5 is fixedly communicated with the first sealing ring 4, and the first sealing ring 6 is fixedly connected with the inlet pipe 2 through the first annular groove 401, and the air leakage stability is reduced.

The left end block of admission pipe 2 is connected with first sealed pad 11, and first sealed pad 11 left side surface is laminated with intake pipe 5 right-hand member surface, sets up between intake pipe 5 and two corresponding ends of admission pipe 2 through first sealed pad 11, further improves intake pipe 5 and the connection leakproofness of admission pipe 2, and first ring channel 401 number is a plurality of, and adjacent first ring channel 401 equidistance distributes, and first sealing washer 6 outside surface and the inseparable laminating of admission pipe 2 inner wall that first ring channel 401 surface cup jointed are convenient for the setting of first sealing washer 6 and the equidistance setting of first sealing washer 6.

Through being connected through the second sealed intercommunication mechanism between relief pressure valve main part 1 and outlet duct 10, the connection leakproofness after improving the decompression, the second sealed intercommunication mechanism includes second solid fixed ring 14, second screw thread post 15, second nut 16, second communicating pipe 13 and second sealing washer 12, second solid fixed ring 14 fixed connection is at discharge pipe 3 terminal surface, second solid fixed ring 14 surface runs through there is second screw thread post 15, second screw thread post 15 right-hand member and outlet duct 10 end side fixed connection, second nut 16 has been cup jointed to second screw thread post 15 left end surface screw thread, outlet duct 10 left end and second communicating pipe 13 fixed intercommunication, second annular groove 1301 has been seted up on second communicating pipe 13 surface, second sealing washer 12 has been cup jointed in the second annular groove 1301, second communicating pipe 13 and second sealing washer 12 have all been cup jointed at discharge pipe 3 inner chamber through the second annular groove 1301 surface that second communicating pipe 13 surface was seted up, the connection leakproofness of second communicating pipe 13 and discharge pipe 3 is improved, the circumstances of avoiding appearing, discharge pipe 3 right-hand member block is connected with second sealing washer 17, the right-hand member 17 is closely laminated with the second annular groove 1301 of the outer side surface of second communicating pipe 3, the second annular groove 1301 is closely distributed, the outer side of a plurality of outer side of adjacent annular grooves 1301 is formed by the second annular groove 1301, the second annular groove 1301 is closely distributed with the outer surface of the second annular groove 1301.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a natural gas delivery pipeline relief pressure valve, includes relief pressure valve main part (1), fixed intercommunication in relief pressure valve main part (1) left side has admission pipe (2), fixed intercommunication in relief pressure valve main part (1) right side has discharge pipe (3), its characterized in that: one end of the inlet pipe (2) is fixedly communicated with the air inlet pipe (5) through a first sealing communication mechanism, and the tail end of the discharge pipe (3) is fixedly communicated with the air outlet pipe (10) through a second sealing communication mechanism;

the first sealing communication mechanism comprises a first fixed ring (7), a first threaded column (8), a first nut (9), a first communication pipe (4) and a first sealing ring (6), wherein the first fixed ring (7) is fixedly connected to the left end surface of the inlet pipe (2), the first threaded column (8) penetrates through the surface of the first fixed ring (7), the first threaded column (8) is fixedly connected with the end surface of the air inlet pipe (5), the first nut (9) is sleeved on the surface of the first threaded column (8) in a threaded manner, the air inlet pipe (5) is fixedly communicated with the first communication pipe (4), a first annular groove (401) is formed in the surface of the first communication pipe (4), and the first sealing ring (6) is sleeved in the first annular groove (401).

2. A natural gas feed line pressure reducing valve as set forth in claim 1, wherein: the left end of the inlet pipe (2) is connected with a first sealing gasket (11) in a clamping mode, and the left side surface of the first sealing gasket (11) is attached to the right end surface of the air inlet pipe (5).

3. A natural gas feed line pressure reducing valve as set forth in claim 1, wherein: the number of the first annular grooves (401) is a plurality, the adjacent first annular grooves (401) are distributed at equal intervals, and the outer side surface of the first sealing ring (6) sleeved on the surface of the first annular groove (401) is tightly attached to the inner wall of the inlet pipe (2).

4. A natural gas feed line pressure reducing valve as set forth in claim 1, wherein: the second sealing communication mechanism comprises a second fixing ring (14), a second threaded column (15), a second nut (16), a second communicating pipe (13) and a second sealing ring (12), wherein the second fixing ring (14) is fixedly connected to the tail end surface of the discharge pipe (3), the second threaded column (15) penetrates through the surface of the second fixing ring (14), the right end of the second threaded column (15) is fixedly connected with the end face side surface of the air outlet pipe (10), the second nut (16) is in threaded sleeve connection with the left end surface of the second threaded column (15), the left end of the air outlet pipe (10) is fixedly communicated with the second communicating pipe (13), a second annular groove (1301) is formed in the surface of the second communicating pipe (13), and the second sealing ring (12) is sleeved in the second annular groove (1301).

5. The natural gas feed line relief valve as defined in claim 4, wherein: the right end of the discharge pipe (3) is connected with a second sealing gasket (17) in a clamping mode, and the right side surface of the second sealing gasket (17) is attached to the left end surface of the air outlet pipe (10).

6. The natural gas feed line relief valve as defined in claim 4, wherein: the number of the second annular grooves (1301) is a plurality, the adjacent second annular grooves (1301) are distributed at equal intervals, and the outer side surface of a second sealing ring (12) sleeved on the surface of the second annular groove (1301) is tightly attached to the inner wall of the discharge pipe (3).