CN216131472U - Pipeline pressure balancing unit around gas station valve - Google Patents

Abstract

The utility model belongs to the technical field of gas delivery, and provides a pressure balancing device for front and rear pipelines of a valve of a gas station. The pressure balancing device for the front pipeline and the rear pipeline of the gas station valve, provided by the utility model, has better pressure balancing effect and stronger applicability.

Description

Pipeline pressure balancing unit around gas station valve

Technical Field

The utility model relates to the technical field of gas delivery, in particular to a pressure balancing device for front and rear pipelines of a valve of a gas station.

Background

The development of the industry, the demand of gas is getting bigger and bigger, and the pressure mechanism of pipe transportation gas is constantly promoted. For the gas field station, because the delivery pressure of the gas and the inner diameter of the delivery pipeline of the gas field station are larger, when the valve of the gas field station is operated, the valve is not easy to open because the pressure difference between two sides of the valve is larger.

The utility model discloses a utility model patent that the grant bulletin number is CN204226777U provides a pressure balance device that is used for large-scale big gate of high-pressure natural gas line, sets up a small-bore pipeline and sets up a small-bore bypass ball valve at the small-bore pipeline through parallelly connected on the inlet pipeline and the export pipeline at large-scale ball valve both ends, through when operating large-scale ball valve, opens the small-bore bypass ball valve earlier to the purpose that reduces the pressure differential at large-scale ball valve both ends has been reached.

However, the above pressure balancing device has disadvantages in that: in order to achieve a better pressure balance effect, the proportion of the small-caliber pipeline to the inlet pipeline and the outlet pipeline at two ends of the large ball valve cannot be too small, and if the proportion is too small, the effect of balancing the pressure difference at two ends of the large ball valve is poor; if the proportion is too large, the supervision for operating the small-caliber bypass ball valve is still large, and therefore the pressure balancing effect and adaptability of the device are poor.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a pressure balancing device for front and rear pipelines of a gas station valve so as to improve the adaptability and the pressure balancing effect of the pressure balancing device.

In order to achieve the purpose, the utility model provides a pressure balancing device for front and rear pipelines of a gas station valve, which comprises a main pipeline, a first valve arranged on the main pipeline and a multi-stage pressure adjusting structure used for adjusting the pressure difference at two ends of the first valve.

Further, multistage pressure regulation structure includes a plurality of branch pipes that connect in parallel each other and sets up second valve on the branch pipe, wherein, the first order the both ends of branch pipe communicate with the both ends of first valve respectively, the next stage the both ends of branch pipe and the setting are in last one-level the both ends intercommunication of second valve on the branch pipe.

Furthermore, a one-way valve is arranged on any one of the branch pipes and is arranged at the outlet end of the second valve.

Furthermore, the opening pressure of the one-way valve is 0.2-0.6 Mpa.

Further, the inner diameter ratio of the branch pipe of the first stage to the main pipe is 1:3 to 1:2, and the inner diameter ratio of the branch pipe of the next stage to the branch pipe of the previous stage is 1:3 to 1: 2.

Further, the first valve is a ball valve.

Further, the second valve is a ball valve.

The utility model has the beneficial effects that:

the pressure balancing device for the front pipeline and the rear pipeline of the gas station valve, provided by the utility model, has the advantage that the adaptability of the device is improved by arranging the multi-stage pressure adjusting structure.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a structural view of a pressure balancing device for front and rear pipes of a gas station valve according to an embodiment of the present invention.

Reference numerals:

100-main pipe, 200-first valve, 300-multistage pressure regulating structure, 310-branch pipe, 320-second valve and 330-one-way valve

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, the present invention provides a pressure balancing device for front and rear pipes of a valve of a gas station, comprising a main pipe 100 and a first valve 200 fixedly installed on the main pipe 100.

The upper pressure balancing device further comprises a multi-stage pressure regulating structure 300 for regulating the pressure difference across the first valve 200.

During the use, the pressure at the both ends of first valve 200 is balanced through multistage pressure regulation structure 300, and the pressure differential that reduces first valve 200 both ends that can be better to improved the balanced effect of device pressure, simultaneously, through multistage pressure regulation structure 300, improved the adaptability of device.

In one embodiment, the multistage pressure regulating structure 300 includes a plurality of branch pipes 310 connected in parallel to each other, wherein both ends of a first-stage branch pipe 310 communicate with both ends of a first valve 200, respectively, and both ends of a next-stage branch pipe 310 communicate with both ends of a second valve 320 installed on the previous-stage branch pipe 310, and a second valve 320320 provided on the branch pipes 310.

During the use, according to the pipe diameter of branch pipe 310 from little to big order second valve 320 on the branch pipe 310 of operating in proper order to can reduce the operation degree of difficulty, simultaneously, when operating first valve 200, carry out pressure balance by a plurality of branch pipes 310 to the both ends of first valve 200, balanced effect is better.

In one embodiment, a check valve 330 is installed on any one of the branch pipes 310, and the check valve 330 is located at the outlet end of the second valve 320.

In use, since the check valve 330 has an opening pressure, a pressure balance is performed between both ends of the second valve 320, thereby reducing the difficulty of operating the second valve 320.

In one embodiment, the cracking pressure of the check valve 330 is 0.2-0.6 MPa.

By opening the one-way valve 330, the pressure differential across the second valve can be reduced, thereby improving the balancing effect.

In one embodiment, the inner diameter ratio of the first stage branch pipe 310 to the main pipe 100 is 1:3 to 1:2, and the inner diameter ratio of the next stage branch pipe to the previous stage branch pipe is 1:3 to 1: 2.

Through the gradual reduction mode, the inner diameter ratio of the two adjacent stages of branch pipes and the inner diameter ratio of the first stage of branch pipe to the main pipe are smaller, and therefore the balance effect is enhanced.

In one embodiment, the first valve 200 is a ball valve.

In one embodiment, the second valve 320 is a globe valve.

The working principle of the utility model is as follows:

when the gas-fired boiler is used, the second valves 320 are firstly and slowly opened from small to large in sequence from the pipe diameter of the branch pipe 310, and then the first valve 200 is slowly operated after all the second valves 320 are opened, because the gas conveyed in the main pipe 100 can bypass the first valve 200 from the branch pipe 310 after the second valves 320 are opened, the pressure difference between two ends of the first valve 200 is reduced when the first valve 200 is operated, and the difficulty in operating the first valve 200 is reduced.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (7)

1. The utility model provides a pipeline pressure balancing unit around gas station valve, includes the trunk line and sets up first valve on the trunk line, its characterized in that: also included is a multi-stage pressure regulating structure for regulating a pressure differential across the first valve.

2. The gas station valve front and rear duct pressure balancing device of claim 1, wherein: the multistage pressure regulating structure comprises a plurality of branch pipes which are connected in parallel and second valves arranged on the branch pipes, wherein the two ends of each branch pipe are communicated with the two ends of each first valve respectively, and the two ends of each branch pipe are communicated with the two ends of each second valve arranged on the corresponding branch pipe.

3. The gas station valve front and rear duct pressure balancing device of claim 2, wherein: any one of the branch pipes is provided with a one-way valve, and the one-way valve is arranged at the outlet end of the second valve.

4. The gas station valve front and rear duct pressure balancing device of claim 3, wherein: the opening pressure of the one-way valve is 0.2-0.6 Mpa.

5. The gas station valve front and rear pipe pressure balancing device according to any one of claims 2 to 4, wherein: the inner diameter ratio of the branch pipe of the first stage to the main pipeline is 1:3 to 1:2, and the inner diameter ratio of the branch pipe of the next stage to the branch pipe of the previous stage is 1:3 to 1: 2.

6. The gas station valve front and rear duct pressure balancing device of claim 5, wherein: the first valve is a ball valve.

7. The gas station valve front and rear duct pressure balancing device of claim 5, wherein: the second valve is a ball valve.

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