CN218444269U

CN218444269U - Pipeline instrument pressure taking device with discharging function

Info

Publication number: CN218444269U
Application number: CN202222467505.1U
Authority: CN
Inventors: 孙立华
Original assignee: Tianjin Huamai Environmental Protection Equipment Co ltd
Current assignee: Tianjin Huamai Environmental Protection Equipment Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-03
Anticipated expiration: 2032-09-19

Abstract

The invention provides a pipeline instrument pressure measuring device with a discharge function, which comprises a root valve arranged on a main pipeline, wherein two valve groups are arranged on the root valve, one port of each valve group is provided with a pressure gauge, and the other port of each valve group is provided with an air guide pipe; a transition ring is detachably mounted between the root valve and the two groups of valves, and filtering components are mounted at openings on two sides of the transition ring respectively. The air duct is installed in the two valve banks through the external thread cutting ferrule connector. The pressure measuring device provided by the invention is easy to debug and maintain, the pressure instrument element is isolated from the main pipeline during calibration, the pressure measuring device is safe and convenient, the gas safety of the whole station is improved, and the filter assembly is arranged in the arranged transition ring, so that impurities carried in a medium are effectively filtered, the measurement precision of the instrument element is ensured, and the service life of the instrument is prolonged.

Description

Pipeline instrument pressure taking device with discharge function

Technical Field

The invention belongs to the field of large-scale fuel gas valve station transmission and distribution, and particularly relates to a pipeline instrument pressure measuring device with a discharge function.

Background

At present, a large-scale gas distribution station, an urban gate station, a pressure regulating station and the like generally directly bear gas field gas collecting pipelines, and are important links in a long-distance pipeline system, the gas bearing capacity and the carrying pressure are high, so that on-site display of a pressure gauge in the system and secondary monitoring of a pressure transmitter are particularly important, in order to ensure the accuracy of the pressure, adopted instrument elements are high in precision level, and need to be checked, maintained and the like regularly to ensure the measurement precision, but the disassembly and assembly of the instrument elements are time-consuming and labor-consuming, the installation workload is large, potential safety hazards exist, and the reliability of the whole system is influenced. In addition, impurities carried in the conveyed gas can have adverse effects on the measurement precision and the service life of the instrument element, for example, the impurities can affect the sensitivity and the accuracy of a pressure gauge pointer, and even can cause the blockage of the pressure instrument, so that the pressure instrument cannot be used. Therefore, there is a need for an improvement of the existing pressure measuring device.

Disclosure of Invention

In view of the above, the present invention provides a pressure measuring device for a pipeline meter, which is provided with a discharge function, to overcome the defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a pressure measuring device of a pipeline instrument with a discharge function comprises a root valve arranged on a main pipeline, wherein two valve groups are arranged on the root valve, one port of each valve group is provided with a pressure gauge, and the other port of each valve group is provided with an air guide pipe; a transition ring is detachably mounted between the root valve and the two groups of valves, and filtering components are mounted at openings on two sides of the transition ring respectively.

Further, the air duct is installed in the two valve banks through an external thread cutting ferrule connector.

Further, the root valve is welded and fixed to the main pipeline.

Further, the air duct is made of a stainless steel tube.

Further, the lower end of the air duct extends to the ground.

Further, be equipped with first connecting flange structure on the root valve, be equipped with second connecting flange structure on two groups of valves, the casing outer fringe of filter is equipped with connecting portion, and bolt through wearing to locate first connecting flange structure, casing connecting portion and second connecting flange structure in proper order is fixed root valve, filter and two group valve connection.

Further, sealing gaskets are arranged between the first connecting flange structure and the shell connecting part and between the second connecting flange structure and the shell connecting part.

Further, the filter assembly includes a filter screen.

Compared with the prior art, the invention has the following advantages:

the pressure measuring device provided by the invention is easy to debug and maintain, the pressure instrument element is isolated from the main pipeline during calibration, the pressure measuring device is safe and convenient, the gas safety of the whole station is improved, and the filter assembly is arranged in the arranged transition ring, so that impurities carried in a medium are effectively filtered, the measurement precision of the instrument element is ensured, and the service life of the instrument is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a root valve in the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic diagram of a valve set in the invention;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a schematic view of the inventive transition ring with a filter assembly installed therein;

FIG. 7 is a schematic view of a transition ring in the invention;

FIG. 8 is a schematic view of an upper filter plate according to the present invention;

fig. 9 is a schematic view of the middle and lower filter plates of the invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are merely for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. 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. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A pipeline instrument pressure measuring device with a discharging function is shown in figures 1 to 9 and comprises a root valve 2 installed on a main pipeline 1, wherein two valve groups 3 are installed on the root valve, one port of each valve group is provided with a pressure gauge 4, and the other port of each valve group is provided with an air guide pipe 5. The two groups of valves are commercially available flange two-valve-group products, the flange two-valve-group products are provided with discharge interfaces, and one of the two valves plays a role in switching or conducting; the other one is used as a discharge valve for discharging the trapped medium in the pressure taking device.

A transition ring 6 is detachably mounted between the root valve and the two groups of valves, and filtering components are respectively mounted at openings on two sides of the transition ring. The root valve, the transition ring and the two groups of valves are installed in series, and the root valve is vertically welded to the main pipeline. Typically, the filter assembly comprises a screen, i.e. an upper screen 7 mounted at the upper end of the transition ring and a lower screen 8 mounted at the lower end. Specifically, mounting grooves 9 can be formed in the end faces of the upper end and the lower end of the transition ring, and the upper filter screen is mounted in the mounting groove in the upper side and the lower filter screen is mounted in the mounting groove in the lower side.

It should be noted that, if the depth of the installation groove is greater than the total thickness of the filter screen and the filter plate, the filter assembly can be supported in the installation groove by the support ring 20, for example, the support ring can be made of rubber and other materials capable of being compressed and deformed, and after the root valve, the transition ring and the two groups of valves are assembled, the support ring is pressed, so that the filtration can keep better stability, and meanwhile, the support ring can also play a role in sealing between the root valve and the transition ring, and between the two groups of valves and the transition ring. Usually, the outer edge of the support ring protrudes 0.5-1mm from the outer end face of the transition ring, and after the assembly is completed, the support ring is compressed, so that the support ring can play an effective role in supporting, fixing and sealing.

Typically, the airway tube is mounted to the two valve banks by means of an external wire ferrule fitting 15. Preferably, the air duct adopts stainless steel pipe, and usually, the air duct lower extreme extends to ground, and the water of being convenient for, gas, filth etc. in time discharge. The pressure gauge and the root valve are made of the existing products sold in the market.

In an alternative embodiment, the filter assembly further comprises an upper filter plate 11 with a plurality of upper apertures 10, which is arranged on the upper side of the upper filter screen; the lower filter assembly comprises a lower filter plate 13 with a plurality of lower hollowed-out holes 12, the lower filter plate is arranged at the lower side of the lower filter screen, the lower hollowed-out holes of the lower filter plate and the upper hollowed-out holes of the upper filter plate are arranged in a staggered mode, namely, the upper hollowed-out holes and the lower hollowed-out holes are arranged in a staggered mode along the projection of the axial direction of the transition ring.

And, set up recess 14 in the non-fretwork hole position of lower filter plate, when the medium got into two valves through the transition ring, can be by the effective filtering impurity of filter assembly to under the effect of keeping off of separating of last filter plate, last filter screen, lower filter screen, partial impurity can fall into the recess of lower filter plate, can effectively protect the instrument component, can not fall into the main line again at the impurity of pressure taking device department gathering, during the plant maintenance, can dismantle and clear up lower filter plate after the transition ring. For example, the diameter of the inner hole of the transition ring is larger than the diameter of the medium channel inside the valve, and the total hollow area of the upper hollow holes, the total hollow area of the lower hollow holes, the cross-sectional area of the channel for medium circulation in the two valve groups, and the cross-sectional area of the medium circulation channel inside the root valve are the same.

The root valve is provided with a first connecting flange structure 16, the two groups of valves are provided with a second connecting flange structure 17, the outer edge of the shell of the filter is provided with a connecting part 18, the connecting parts of the first connecting flange structure, the second connecting flange structure and the shell are correspondingly provided with connecting holes 19, and the root valve, the filter and the two groups of valves are connected and fixed through bolts sequentially penetrating through the connecting holes of the first connecting flange structure, the shell connecting part and the second connecting flange structure. In order to guarantee the sealing performance, sealing gaskets are arranged between the first connecting flange structure and the shell connecting part and between the second connecting flange structure and the shell connecting part.

Before the use, close the handle that is used for discharging in the two valve banks, open the handle that is used for leading to in root valve and the two valve banks in proper order, the manometer can lead to with the main pipeline. When the discharge port needs to be started, the root valve is closed, the pressure of the main pipeline is cut off, and then the discharge valves in the two valve groups are opened slowly, so that the safe operation of the whole equipment is ensured.

The pressure measuring device provided by the invention is easy to debug and maintain, the pressure instrument element is isolated from the main pipeline during calibration, the pressure measuring device is safe and convenient, the gas safety of the whole station is improved, and the filter assembly is arranged in the arranged transition ring, so that impurities carried in a medium are effectively filtered, the measurement precision of the instrument element is ensured, and the service life of the instrument is prolonged. Be provided with two valves between root valve and manometer, need not to follow the pipeline and dismantle during the instrument calibration, only need close the root valve, can directly arrange the gas between pressure instrument and the valve, filth and water with the help of the discharge port of two valves, can guarantee that pressure instrument is unloaded, such structural design arranges and presses effectually, factor of safety is high, simplify pipe connection and installation work load, improved component life simultaneously, alleviate the air current, the impact of water etc. to pressure instrument component, guarantee whole equipment even running.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. The utility model provides a pipeline instrument pressure taking device with discharge function which characterized in that: the root valve is arranged on a main pipeline, two valve groups are arranged on the root valve, one port of each valve group is provided with a pressure gauge, and the other port of each valve group is provided with an air guide pipe; a transition ring is detachably mounted between the root valve and the two groups of valves, and filtering components are mounted at openings on two sides of the transition ring respectively.

2. The pipeline meter pressure tapping device with the discharging function as claimed in claim 1, wherein: the air duct is installed in the two valve banks through the external thread cutting ferrule connector.

3. The pipeline instrument pressure tapping device with the discharge function as claimed in claim 1, wherein: the root valve is welded and fixed on the main pipeline.

4. The pipeline instrument pressure tapping device with the discharge function as claimed in claim 1, wherein: the gas-guide tube adopts a stainless steel tube.

5. The pipeline instrument pressure tapping device with the discharge function as claimed in claim 1, wherein: the lower end of the air duct extends to the ground.

6. The pipeline instrument pressure tapping device with the discharge function as claimed in claim 1, wherein: the outer edge of the shell of the transition ring is provided with a connecting part, and the root valve, the transition ring and the two groups of valves are connected and fixed through bolts which sequentially penetrate through the first connecting flange structure, the shell connecting part and the second connecting flange structure.

7. The pressure measuring device with the discharging function for the pipeline instrument according to claim 6, wherein: sealing gaskets are arranged between the first connecting flange structure and the shell connecting part and between the second connecting flange structure and the shell connecting part.

8. The pipeline instrument pressure tapping device with the discharge function as claimed in claim 1, wherein: the filter assembly includes a filter screen.