CN214535104U

CN214535104U - Anti-burst leakage joint of pipeline pressure gauge

Info

Publication number: CN214535104U
Application number: CN202120624499.9U
Authority: CN
Inventors: 信众; 裴东
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-10-29
Anticipated expiration: 2031-03-29

Abstract

The utility model belongs to the technical field of fluid equipment, in particular to an anti-burst leakage joint of a pipeline pressure gauge, which comprises a shell, wherein one end of the shell is connected with the pressure gauge, the other end of the shell is connected with a pipeline, the pressure gauge is internally provided with a pressure gauge channel, a fluid channel is arranged in the shell, and the inner diameter of the fluid channel is larger than that of the pressure gauge channel; a plugging mechanism is arranged in the fluid channel and comprises a plug and a balancing weight, the plug is matched with the pressure gauge channel, and the balancing weight is connected with the plug; the diameter of the balancing weight is matched with the inner diameter of the fluid channel. The utility model discloses use the fluid passage of balancing weight cooperation increase, can make the pipeline open the pressure variation in the twinkling of an eye and do not influence the manometer work, promote the demonstration precision of manometer.

Description

Anti-burst leakage joint of pipeline pressure gauge

Technical Field

The utility model belongs to the technical field of fluid equipment, concretely relates to pipeline pressure gauge anti-burst leaks and connects.

Background

The pressure gauge is an important measuring instrument in the safety production of enterprises at present, and the parameters provided by the pressure gauge are important factors directly related to the production safety. In petroleum pipeline transportation, the correct reading of the pressure gauge provides a certain degree of convenience for field station staff.

At present, a pressure gauge is a common pressure reading device in daily production management of an oil field, and is widely applied to various production places in various industries such as oil extraction, operation, hot injection, gathering and transportation and the like. When damage or frost damage appear in the manometer and maintain improper, will cause revealing of medium in the measuring tube way, can make the gauge pressure reduce, thereby the medium will get into the manometer through pressure gauge joint and cause the more serious damage of manometer, if this medium is corrosivity or dangerous medium, not only can corrode the manometer, and air pollution influences station staff's personal safety moreover. At present, the leakage of media in a measuring pipeline through a pressure meter is prevented by manually closing a pressure meter control valve for remediation, but the efficiency is low, and the leakage of the media in the pipeline often occurs in time of not closing the pressure meter control valve.

In the prior art, the pressure difference generated when the pressure gauge leaks is used for enabling the plug to block the pressure gauge, so that continuous leakage is prevented. However, in actual use, sudden opening of the pipeline in an unopened state can generate instantaneous pressure increase in the pipeline, and the instantaneous pressure increase can directly block the pressure gauge by the plug in the scheme, so that the pressure gauge cannot read the fluid pressure at the moment, and the display accuracy is affected. Meanwhile, the scheme has a complex structure and high production cost.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a pipeline pressure table anti-burst leaks and connects uses the increased fluid passage of balancing weight cooperation, can make the pipeline open the pressure variation in the twinkling of an eye and do not influence the manometer work, promotes the display accuracy of manometer.

The utility model provides a scheme as follows:

the utility model provides a pipeline pressure gauge explosion-proof leakage connects, includes the casing, casing one end is connected with the manometer, and the other end and pipe connection, include the manometer passageway in the manometer. The opening that aligns with the manometer passageway is seted up to the upper end of casing, and the lower extreme is equipped with the pipeline interface for be connected with the pipeline that awaits measuring.

A fluid channel is arranged in the shell, and the inner diameter of the fluid channel is larger than that of the pressure gauge channel;

a plugging mechanism is arranged in the fluid channel and comprises a plug and a balancing weight, the plug is matched with the pressure gauge channel, and the balancing weight is connected with the plug;

the diameter of the balancing weight is matched with the inner diameter of the fluid channel.

Plugging mechanism include end cap and balancing weight, the effect of end cap is when plugging mechanism removes manometer one end, can block up the entry of manometer passageway completely, make during the fluid can't get into the manometer again, prevent to leak, consequently, the selection of end cap needs the jam manometer passageway that can be complete, general selectable rubber material. The counterweight block has the advantages that the counterweight block is used for guiding, so that the whole plugging mechanism can be lifted in the vertical direction in the fluid channel; secondly, the inner diameter of the fluid channel is matched, a gap is reserved between the inner diameter of the fluid channel and the fluid channel, and the fluid can flow through the gap; and thirdly, a proportional relation exists between the pressure of the fluid to be measured and the specific gravity of the fluid to be measured, so that when the pipeline is opened or closed, the pressure of the fluid is instantaneously changed, and under the action of the balancing weight, the instantaneously changed pressure only enables the plugging mechanism to rise to the height of 1/3-1/2 of the fluid channel, so that the plugging mechanism cannot rise to one end of the pressure gauge completely to block the pressure gauge channel, and the pressure gauge is damaged.

Wherein, in order to keep the whole plugging mechanism to have enough buffer space, the volume of the fluid channel needs to be larger than the volume of the pressure gauge channel, and is usually 2-3 times of the volume of the pressure gauge channel.

The specific gravity of the balancing weight can be adjusted according to the specific gravity of the fluid to be detected, and the balancing weights made of different materials are matched to be used when different fluids are detected. The careful experiment proves that the specific gravity of the balancing weight is 1.5-3 times of that of the fluid, and the technical effect can be met. Meanwhile, the height of the whole counterweight mechanism is required to be less than half of the height of the fluid channel, and the action of the counterweight block is matched to ensure that instantaneous pressure cannot cause the plug to block the pressure gauge channel.

The pipeline interface of casing lower extreme is used for installing the casing on the pipeline that awaits measuring, and the outer lane of pipeline interface is equipped with the screw thread for the installation, and the internal diameter of pipeline interface need be less than the fluid passage internal diameter, and the pipeline interface internal diameter is greater than manometer passageway internal diameter simultaneously.

Further, the casing includes casing and lower casing, go up the casing and can dismantle with lower casing and be connected, set up on last casing with the opening of manometer passageway intercommunication, the pipeline interface is established at casing down. The shell is split into two parts, so that the balancing weight is convenient to replace. Go up casing and lower casing and generally adopt threaded connection, the cooperation sealing strip seals can.

The utility model discloses a theory of operation is:

and a pipeline interface is arranged on the pipeline to be tested, and a shell at the upper end is arranged on a pressure gauge channel interface. When the pressure measuring device works normally, fluid flows through a gap between the balancing weight and the inner wall of the fluid channel and enters the pressure gauge to measure pressure; when the pipeline is suddenly opened in an unopened state, the pressure of the pipeline is instantaneously increased, the counterweight mechanism is pushed by the increased pressure in the pipeline to move upwards, the counterweight mechanism can stop moving to a balance point under the action of the counterweight block and cannot block a pressure gauge channel, and the counterweight mechanism returns to the original position after the pressure in the pipeline is stable; when the manometer burst, manometer one side reduced because of the leakage pressure, formed the pressure differential with pipeline one side, and shutoff mechanism is promoted upward movement to manometer one end by the pressure differential, and the pressure gauge passageway is blockked up to the end cap, and the fluid can't get into the manometer again, avoids lasting the leakage.

Compared with the prior art, the utility model discloses the advantage is:

1. the counterweight block is matched with the enlarged fluid channel, so that the pressure change at the moment of opening the pipeline does not influence the work of the pressure gauge, and the measurement precision of the pressure gauge is improved;

2. the impact of the instantly increased water pressure on the pressure gauge is reduced, and the service life is prolonged;

3. simple structure and convenient processing and production.

Drawings

Fig. 1 is a structural view of the present application.

Fig. 2 is a view showing the position of the plugging mechanism when the pipe is opened.

Fig. 3 is a structure diagram of the position of the plugging mechanism after the pressure gauge bursts.

In the figure, 1, a pipeline interface; 2. a fluid channel; 3. an upper housing; 4. a pressure gauge; 5. a pressure gauge channel; 6. a plug; 7. a lower housing; 8. and a balancing weight.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, the anti-burst leakage joint for the pipeline pressure gauge comprises an upper shell 3 and a lower shell 7, wherein the upper shell 3 is in threaded connection with a pressure gauge 4, and the upper shell 3 is provided with a through hole communicated with a pressure gauge channel 5; the upper part of the lower shell 7 is provided with a fluid channel 2, the inner diameter of the fluid channel 2 is 3 times of that of the pressure gauge channel 5, the lower part is provided with a pipeline interface 1, and the inner diameter of the fluid channel 2 is larger than that of the pipeline interface 1 so as to facilitate the placement of a plugging mechanism. The upper shell 3 is connected with the lower shell 7 through threads, and is sealed in a matching way; the lower housing 7 is connected to the pipe to be tested.

A plugging mechanism is arranged in the fluid channel 2 and comprises a plug 6 and a balancing weight 8, the balancing weight 8 and the fluid channel 2 are the same in inner diameter shape, so that the balancing weight 8 can vertically move in the fluid channel 2, a gap exists between the balancing weight 8 and the inner wall of the fluid channel 2, and fluid can flow through the gap. End cap 6 is installed at 8 upsides in the balancing weight, and end cap 6 is just to manometer passageway 5, and the size should be with can stopping up manometer passageway 5 completely as the standard. The material of end cap 6 is rubber, and the material of balancing weight 8 is selected according to the liquid that awaits measuring of difference, and the standard is, and the proportion of balancing weight 8 is 2 times of the liquid proportion that awaits measuring. The shape of the plug 6 can also be changed, and the specific standard is that the height of the whole plugging structure is 1/3-1/2 of the length of the fluid channel 2.

When the fluid pipeline that awaits measuring of difference when needs use, open upper shell 3, can change balancing weight 8.

As shown in figure 2, when the pipeline is suddenly opened under the unopened state, the pressure of the pipeline is instantaneously increased, the counterweight mechanism is pushed by the increased pressure in the pipeline to move upwards, the counterweight mechanism can stop moving to a balance point under the action of the counterweight block 8, the pressure gauge channel 5 cannot be blocked, and the counterweight mechanism returns to the original position after the pressure in the pipeline is stable.

As shown in fig. 3, when the pressure gauge 4 bursts, pressure difference is formed between one side of the pressure gauge 4 and one side of the pipeline due to the reduction of leakage pressure, the plugging mechanism is pushed by the pressure difference to move upwards to one end of the pressure gauge, the plug 6 plugs the pressure gauge channel 5, and fluid can not enter the pressure gauge 4 any more, so that continuous leakage is avoided.

Claims

1. The utility model provides a pipeline pressure gauge explosion-proof leakage connects, includes the casing, casing one end is connected with the manometer, and the other end and pipe connection, including the manometer passageway in the manometer, its characterized in that:

2. The burst and leak resistant connector of a pipe pressure gauge as claimed in claim 1, wherein the ratio of the length of the fluid passageway to the height of the plugging mechanism is from 2:1 to 3: 1.

3. The burst and leak resistant connector of a pipe pressure gauge as claimed in claim 1, wherein the ratio of the volume of the fluid channel to the volume of the pressure gauge channel is 2:1 to 3: 1.

4. The burst and leak preventing joint of the pipe pressure gauge according to claim 1, wherein the ratio of the specific gravity of the weight block to the specific gravity of the fluid in the pipe is 1.5:1-3: 1.

5. The burst and leak proof connector of claim 1, wherein the end of the housing connected to the pipe is provided with a pipe connection, the pipe connection inner diameter is smaller than the fluid channel inner diameter, and the pipe connection inner diameter is larger than the pressure gauge channel inner diameter.

6. The burst and leak resistant joint of claim 1-5 wherein the housing comprises an upper housing and a lower housing, the upper housing being removably connected to the lower housing.