CN214407869U

CN214407869U - Anti-blocking pressure measuring pipeline

Info

Publication number: CN214407869U
Application number: CN202120448867.9U
Authority: CN
Inventors: 何海波; 李帅访; 王向辉
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-10-15
Anticipated expiration: 2031-03-02

Abstract

The utility model discloses an anti-blocking pressure measuring pipeline, which comprises a pressure measuring main pipe, wherein one end of the pressure measuring main pipe is connected with a pressure source, and the other end is connected with a pressure measuring device; the pressure measuring main pipe is of an inverted U-shaped pipe structure; one end of the pressure measuring main pipe close to the pressure source is connected with a first ball valve; the top end of the elbow part of the pressure measuring main pipe is connected with a layering mechanism; the layering mechanism comprises a three-way valve connected with the top end of the elbow part of the pressure measuring main pipe; one end of the three-way valve is connected with the layering liquid inlet; the device has solved prior art's pressure-measuring pipeline and has been blocked by the deposit easily, the effect of decontaminating is relatively poor, need discharge a large amount of measured media when washing, it is higher to arranging the environmental requirement, and the diaphragm that diaphragm type pressure measurement device exists is easy damaged, short-lived, the problem of a great deal of shortcomings such as maintenance work complicacy, simple structure has, high durability and convenient use, the inside whole journey of pressure-measuring pipeline does not contact with the medium to be measured who has impurity, the inside cleanness that lasts of pressure-measuring pipe has been guaranteed, pressure-measuring device life's characteristics have been prolonged.

Description

Anti-blocking pressure measuring pipeline

Technical Field

The utility model belongs to the technical field of pipeline pressure measurement, in particular to prevent blockking up pressure measurement pipeline.

Background

The pressure measuring pipe is used for connecting a measured medium and a pressure measuring device such as a pressure gauge, a pressure transmitter and the like. The liquid medium is usually not pure and usually contains dirt such as silt, so that a pressure introduction hole in a measurement pipeline or a pressure measuring device is blocked by the dirt; the existing pressure measuring pipeline anti-blocking technology generally adopts a periodic back-flushing pollution discharge mode to remove deposited blocking objects in a pipeline, and has poor back-flushing effect on positions such as blocked pores, pleated walls and the like. A large amount of measured media need to be discharged during flushing, and certain requirements are imposed on the arrangement environment; in addition, a diaphragm type pressure measuring device is provided, and a medium and a pressure detection unit are isolated by a diaphragm material, so that the diaphragm type pressure measuring device has the defects of easiness in breakage, short service life, complex maintenance work and the like; therefore, it is necessary to design an anti-clogging pressure measurement pipeline to solve the above problems.

Disclosure of Invention

The utility model aims to solve the technical problem that a prevent blockking up pressure measurement pipeline is provided, the device has solved prior art's pressure measurement pipeline and has been blocked by the deposit easily, the effect of decontaminating is relatively poor, need discharge a large amount of measured media when washing, it is higher to arranging the environmental requirement, and the diaphragm that diaphragm type pressure measurement device exists is easy damaged, short service life, the problem of a great deal of shortcomings such as maintenance work complicacy, and the pressure measurement pipeline has simple structure, high durability and convenient use, the inside whole journey of pressure measurement pipeline does not contact with the medium to be measured who has impurity, it lasts cleanly to have guaranteed that pressure measurement pipe is inside, pressure measurement device life's characteristics have been prolonged.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: an anti-blocking pressure measuring pipeline comprises a pressure measuring main pipe, wherein one end of the pressure measuring main pipe is connected with a pressure source, and the other end of the pressure measuring main pipe is connected with a pressure measuring device; the pressure measuring main pipe is of an inverted U-shaped pipe structure; one end of the pressure measuring main pipe close to the pressure source is connected with a first ball valve; the top end of the elbow part of the pressure measuring main pipe is connected with a layering mechanism.

Preferably, the layering mechanism comprises a three-way valve connected with the top end of the elbow part of the pressure measuring main pipe; two ends of the three-way valve are connected with the pressure measuring main pipe, and the other end of the three-way valve is connected with the layering liquid inlet through a sixth ball valve; the three-way valve is preferably a T-shaped three-way ball valve which can freely operate the three-way valve.

Preferably, the stratified fluid comprises a spacer fluid and a pure measured medium; the density of the spacer fluid is less than that of the pure measured medium; the spacer fluid may preferably be a relatively low-density spacer fluid such as silicone oil.

Preferably, the pressure measuring main pipes on two sides of the layering mechanism are connected with a first exhaust valve and a second exhaust valve; a second ball valve is arranged at the inlet of the first exhaust valve; and a third ball valve is arranged at the inlet of the second exhaust valve.

Preferably, the lower surface of one end of the pressure measuring main pipe, which is close to the pressure source, is connected with a first emptying valve; the lower surface of one end of the pressure measuring main pipe close to the pressure measuring device is connected with a second emptying valve.

Preferably, the first exhaust valve and the second exhaust valve are positioned at the highest point of the pressure measuring main pipe; the first emptying valve and the second emptying valve are positioned at the lowest point of the pressure measuring main pipe.

Preferably, the vertical pipe sections on two sides of the U-shaped pipe in the pressure measuring main pipe are connected with a first oil-water separation valve and a second oil-water separation valve; the inlet end of the first oil-water separation valve is connected with a fourth ball valve, and the inlet end of the second oil-water separation valve is connected with a fifth ball valve.

Preferably, the first oil-water separation valve and the second oil-water separation valve are equal in height, and are distributed in equal-height symmetry relative to the middle of the U-shaped pipe.

The utility model has the advantages that:

1. the structure is simple and not easy to damage; the pressure measuring device can be assembled by adopting a common valve and a pipeline, is convenient for reconstruction and development in the prior art, is also convenient for subsequent replacement and update, has low cost, long service life and strong universality, and has no special requirement on the pressure measuring device;

2. the maintenance is simple and convenient, the installation and debugging are in place, and the maintenance is not needed under the condition of good sealing property;

3. the medium to be measured containing impurities can be prevented from directly entering the pressure measuring main pipe and contacting with the pressure measuring device, the cleanness of the interior of the pipeline is guaranteed, and the sediment is not required to be washed in the later period.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference numbers in the figures are: the pressure measuring device comprises a first ball valve 1, a first exhaust valve 2, a second ball valve 3, a second exhaust valve 4, a third ball valve 5, a sixth ball valve 6, a three-way valve 7, a fourth ball valve 8, a first oil-water separation valve 9, a second oil-water separation valve 10, a fifth ball valve 11, a first emptying valve 12, a second emptying valve 13 and a pressure measuring main pipe 14.

Detailed Description

As shown in fig. 1, an anti-clogging pressure measuring pipeline includes a pressure measuring main pipe 14, one end of the pressure measuring main pipe 14 is connected with a pressure source, and the other end is connected with a pressure measuring device; the pressure measuring main pipe 14 is of an inverted U-shaped pipe structure; one end of the pressure measuring main pipe 14 close to the pressure source is connected with a first ball valve 1; the top end of the bent pipe part of the pressure measuring main pipe 14 is connected with a layering mechanism.

Preferably, the layering mechanism comprises a three-way valve 7 connected with the top end of the elbow part of the pressure measuring main pipe 14; two ends of the three-way valve 7 are connected with the pressure measuring main pipe 14, and the other end of the three-way valve 7 is connected with the layering liquid inlet through the sixth ball valve 6; the three-way valve 7 is preferably a T-shaped three-way ball valve which is free to operate a three-way valve.

Preferably, the pressure measuring main pipes 14 at two sides of the layering mechanism are connected with a first exhaust valve 2 and a second exhaust valve 4; a second ball valve 3 is arranged at the inlet of the first exhaust valve 2; a third ball valve 5 is arranged at the inlet of the second exhaust valve 4.

Preferably, the lower surface of one end of the pressure main pipe 14 close to the pressure source is connected with a first emptying valve 12; the lower surface of one end of the pressure measuring main pipe 14 close to the pressure measuring device is connected with a second emptying valve 13.

Preferably, the first exhaust valve 2 and the second exhaust valve 4 are located at the highest point of the pressure measuring main pipe 14; the first and

second dump valves

12 and 13 are located at the lowest point of the pressure main 14.

Preferably, a first oil-water separation valve 9 and a second oil-water separation valve 10 are connected to vertical pipe sections on two sides of the U-shaped pipe in the pressure measuring main pipe 14; the inlet end of the first oil-water separation valve 9 is connected with a fourth ball valve 8, and the inlet end of the second oil-water separation valve 10 is connected with a fifth ball valve 11.

Preferably, the first oil-water separation valve 9 and the second oil-water separation valve 10 are equal in height, and the first oil-water separation valve 9 and the second oil-water separation valve 10 are distributed in equal-height symmetry relative to the middle of the U-shaped pipe.

The working principle of the anti-blocking pressure measuring pipeline is as follows:

after the pipeline is installed in place, the U-shaped pipeline is filled with pure measured medium and isolation liquid through reasonable and orderly debugging steps, so that no air exists in the U-shaped pipeline, the heights of the isolation liquid on the two sides of the pipeline and the interface of the medium are the same, and the pressure of the medium can be accurately transmitted to a pressure measuring device; the specific operation steps are as follows:

pipeline flushing: and opening the sixth ball valve 6, the first emptying valve 12 and the second emptying valve 13, operating the three-way valve 7 to enable the A, B, C port to be completely communicated, keeping the other ball valves to be completely closed, injecting pure medium into the U-shaped pipe through the sixth ball valve 6, and taking away impurities and dirt in the pipeline while the medium flows out of the first emptying valve 12 and the second emptying valve 13.

And (3) injecting pure media: closing the first emptying valve 12 and the second emptying valve 13, opening the second ball valve 3, the third ball valve 5, the fourth ball valve 8 and the fifth ball valve 11, and continuing to inject pure media through the sixth ball valve 6, so that air is discharged from the first exhaust valve 2 and the second exhaust valve 4 while the liquid level of the pure media in the U-shaped pipe is continuously increased; when the first oil-water separation valve 9 and the second oil-water separation valve 10 are observed to have pure media flowing out, stopping injecting, and closing the fourth ball valve 8 and the fifth ball valve 11; at the moment, the pure medium liquid levels on the two sides of the U-shaped pipe just reach the connection positions of the first oil-water separation valve 9, the second oil-water separation valve 10 and the U main pipeline.

Injecting a spacer fluid: and the isolation liquid is injected through the sixth ball valve 6, the isolation liquid level in the U-shaped pipe is continuously increased, and meanwhile, air is discharged from the first exhaust valve 2 and the second exhaust valve 4 until the air is completely discharged, so that the U-shaped pipe is filled with the isolation liquid. At this time, the sixth ball valve 6, the second ball valve 3 and the third ball valve 5 are closed, then the first ball valve 1 is opened, and the pressure measuring device is communicated with the pressure source, so that the normal operation can be carried out.

In daily maintenance, if the liquid level of a single side of the U-shaped pipe is only required to be adjusted, the first ball valve 1 can be closed, the second ball valve 3, the third ball valve 5, the fourth ball valve 8 and the fifth ball valve 11 are opened, then the T-shaped three-way valve 7 is operated until the port A and the port B are communicated, the port C is not communicated, or the port A and the port C are communicated, the port B is not communicated, and pure media or isolation liquid is supplemented to the pressure source side or the measuring device side.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. An anti-blocking pressure measuring pipeline comprises a pressure measuring main pipe (14), wherein one end of the pressure measuring main pipe (14) is connected with a pressure source, and the other end of the pressure measuring main pipe is connected with a pressure measuring device; the method is characterized in that: the pressure measuring main pipe (14) is of an inverted U-shaped pipe structure; one end of the pressure measuring main pipe (14) close to the pressure source is connected with a first ball valve (1); the top end of the bent pipe part of the pressure measuring main pipe (14) is connected with a layering mechanism.

2. The anti-clogging pressure measurement pipeline according to claim 1, characterized in that: the layering mechanism comprises a three-way valve (7) connected with the top end of the elbow part of the pressure measuring main pipe (14); two ends of the three-way valve (7) are connected with the pressure measuring main pipe (14), and the other end of the three-way valve (7) is connected with the layering liquid inlet through a sixth ball valve (6).

3. The anti-clogging pressure measurement pipeline according to claim 2, characterized in that: the stratified liquid comprises isolation liquid and pure measured medium; the density of the spacer fluid is less than the density of the pure measured medium.

4. The anti-clogging pressure measurement pipeline according to claim 1, characterized in that: the pressure measuring main pipes (14) on the two sides of the layering mechanism are connected with a first exhaust valve (2) and a second exhaust valve (4); a second ball valve (3) is arranged at the inlet of the first exhaust valve (2); and a third ball valve (5) is arranged at the inlet of the second exhaust valve (4).

5. The anti-clogging pressure measurement pipeline according to claim 1, characterized in that: the lower surface of one end, close to the pressure source, of the pressure measuring main pipe (14) is connected with a first emptying valve (12); the lower surface of one end of the pressure measuring main pipe (14) close to the pressure measuring device is connected with a second air release valve (13).

6. The anti-clogging pressure measurement pipeline according to claim 4, characterized in that: the first exhaust valve (2) and the second exhaust valve (4) are positioned at the highest point of the pressure measuring main pipe (14); the first emptying valve (12) and the second emptying valve (13) are positioned at the lowest point of the pressure measuring main pipe (14).

7. The anti-clogging pressure measurement pipeline according to claim 1, characterized in that: a first oil-water separation valve (9) and a second oil-water separation valve (10) are connected to vertical pipe sections on two sides of a U-shaped pipe in the pressure measuring main pipe (14); the inlet end of the first oil-water separation valve (9) is connected with a fourth ball valve (8), and the inlet end of the second oil-water separation valve (10) is connected with a fifth ball valve (11).

8. The anti-clogging pressure measurement pipeline according to claim 7, characterized in that: the first oil-water separation valve (9) and the second oil-water separation valve (10) are equal in position height.