CN216695394U

CN216695394U - Isolating device for pressure measurement

Info

Publication number: CN216695394U
Application number: CN202123332088.1U
Authority: CN
Inventors: 黄应红
Original assignee: Yunnan Wengfu Yuntianhua Fluorchem Technology Co ltd
Current assignee: Yunnan Wengfu Yuntianhua Fluorchem Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-07
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses an isolating device for pressure measurement, which comprises an installation flange, a pressure guide pipe, a condensation barrel, a needle valve, a tee joint and a transmitter. In the using process of the utility model, the medium pressure acts on the isolation liquid in the condensation barrel through the pressure guide pipe and then acts on the transmitter through the isolation liquid, the measured medium is isolated from the transmitter through the isolation liquid, and the isolation liquid and the measured medium are insoluble and non-reactive, thereby playing the role of protecting the transmitter.

Description

Isolating device for pressure measurement

Technical Field

The utility model relates to the field of isolation devices, in particular to an isolation device for pressure measurement.

Background

The medium pressure control is taken as an important parameter directly related to the safety of production activities and the product quality, and the pressure parameters of various devices such as media, containers and the like are accurately measured in time in daily production activities in various industries and links, so that the medium pressure control has great significance for guiding the production activities.

However, because the pressure measurement adopts a direct contact medium measurement mode, and because of the various measurement media, the difference of physical and chemical properties and other reasons, the measured medium often causes direct damage to the pressure measurement instrument or influences the measurement result.

At present, a capillary pressure transmitter similar to the isolation mode is provided, but in the actual use process, a measured medium still needs to be in direct contact with a flange liquid-receiving diaphragm of the capillary pressure transmitter, so that the diaphragm is prone to deformation, damage or aging and the like, the reliability of measurement is affected, even the transmitter is damaged due to the fact that the medium finally permeates through the capillary tube, meanwhile, the capillary pressure transmitter is high in purchase and maintenance cost, and the problem of high daily maintenance cost due to the fact that the protection diaphragm needs to be frequently replaced for protecting the liquid-receiving diaphragm of the transmitter is solved.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above-mentioned disadvantages, the present invention provides a device for isolating a pressure measuring instrument from a measured medium, so as to improve the reliability of pressure measurement and prolong the service life of the pressure measuring instrument.

The utility model is realized in such a way that an isolating device for pressure measurement is constructed, the isolating device comprises a mounting flange, a pressure guide pipe, a condensation barrel, a needle valve, a tee joint and a transmitter, wherein the mounting flange is connected with one end of the pressure guide pipe, the other end of the pressure guide pipe is connected with the condensation barrel, the bottom of the condensation barrel is connected with the needle valve, the rear end of the needle valve is connected with the tee joint, and the transmitter is installed at the upper end of the tee joint.

Preferably, the mounting flange is mounted directly to a mounting flange of one of a storage tank, a pipeline, and a pressure vessel installation.

Preferably, the mounting flange and the pressure guiding pipe are connected by one of welding or quick joint.

Preferably, an exhaust port is formed in the top of the condensation barrel, an internal thread is machined in the exhaust port, and the exhaust port is sealed in a mode of bolts and O-shaped rings.

Preferably, the lower end of the tee joint is connected with a pilot shower valve.

Preferably, a spacer fluid is added into the condensation barrel.

Preferably, the transmitter is installed at a height lower than the interface of the condensing barrel and the pressure guide pipe.

Preferably, in the actual installation process, the material of the isolation device and the isolation liquid need to be selected in combination with the chemical property of the measured medium, the material should not react with the measured medium and can bear the corrosion of the measured medium, and the like, and the specific gravity of the isolation liquid should be greater than that of the measured medium, and the isolation liquid should not react with the measured medium and cannot be mixed and melted.

The utility model has the following advantages: the utility model provides an isolation device for pressure measurement by improvement, compared with the same type of equipment, the isolation device has the following improvements:

the method has the advantages that: according to the isolating device for pressure measurement, in the using process, medium pressure acts on the isolating liquid in the condensation barrel through the pressure guide pipe and then on the transmitter through the action of the isolating liquid, the measured medium is isolated from the transmitter through the isolating liquid, and the isolating liquid and the measured medium are immiscible and do not react, so that the transmitter can be protected.

The method has the advantages that: according to the isolating device for pressure measurement, if part of components of the isolating device are damaged or corroded, an individual component can be replaced, the whole isolating device is not affected, and the problems that the components of the capillary tube transmitter are difficult to repair after being damaged and the maintenance cost is high are solved.

The method has the advantages that: according to the isolating device for pressure measurement, if a transmitter needs to be handed out or removed in daily maintenance, pressure can be released through the exhaust port at the top of the condensation barrel and then handed out only by directly closing the root valve connected with the isolating device and equipment, a mounting flange does not need to be detached, potential safety hazards are reduced, and a medium is prevented from splashing to hurt people.

The advantages are that: the size of the components of the isolating device for pressure measurement can be determined according to the field use environment, so that the isolating device for pressure measurement better meets the field conditions and is attractive and standard.

The advantages are that: according to the isolating device for pressure measurement, if the isolating liquid is corroded or polluted by a measured medium, the isolating liquid can be added again after being drained through draining, and the isolating device can be recycled.

The method has the advantages that: the isolating device for pressure measurement has the advantages of simple process, convenient and cheap materials and low cost, and reduces the use and maintenance cost of the transmitter.

Drawings

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

Wherein: the device comprises a mounting flange-1, a pressure guide pipe-2, a condensation barrel-3, a needle valve-4, a tee joint-5 and a transmitter-6.

Detailed Description

The present invention will be described in detail with reference to fig. 1, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides an isolating device for pressure measurement through improvement, which comprises an installation flange 1, a pressure guide pipe 2, a condensation barrel 3, a needle valve 4, a tee joint 5 and a transmitter 6, wherein the installation flange 1 is connected with one end of the pressure guide pipe 2, the other end of the pressure guide pipe 2 is connected with the condensation barrel 3, the bottom of the condensation barrel 3 is connected with the needle valve 4, the rear end of the needle valve 4 is connected with the tee joint 5, and the transmitter 6 is installed at the upper end of the tee joint 5.

Further, the mounting flange 1 is directly mounted on a mounting flange of one of storage tanks, pipelines, pressure vessels and other equipment.

Further, the mounting flange 1 and the pressure guiding pipe 2 are connected by one of welding or quick joint.

Furthermore, 3 tops of condensation bucket are provided with the gas vent to the gas vent processing internal thread is sealed with the mode of bolt with O type circle, and the gas vent effect is through gas vent to condensation bucket 3 addition buffer solution, also is used for carrying out the pressure release etc. in zero point marking and the daily inspection maintenance to atmospheric pressure after 6 installations of changer are accomplished simultaneously.

Furthermore, the lower end of the tee joint 5 is connected with a guiding and leaching valve for draining liquid.

Further, an isolation liquid is added in the condensation barrel 3 for isolation.

Further, the installation height of the transmitter 6 is lower than the interface between the condensation barrel 3 and the pressure guide pipe 2, so that the space between the condensation barrel 3 and the transmitter 6 is completely filled with the isolation liquid.

Furthermore, in the actual installation process, the material of the isolation device and the isolation liquid need to be selected in combination with the chemical property of the measured medium, the material should not react with the measured medium and can bear the corrosion of the measured medium, and the like, and the specific gravity of the isolation liquid should be greater than that of the measured medium, and the isolation liquid should not react with and be immiscible with the measured medium.

In the use process of the utility model, the medium pressure acts on the insulating liquid in the condensation barrel 3 through the pressure guide pipe 2 and then acts on the transmitter 6 through the insulating liquid, the measured medium is isolated from the transmitter 6 through the insulating liquid, and the insulating liquid and the measured medium are insoluble and non-reactive, thereby playing a role of protecting the transmitter 6.

If part of components of the isolation device are damaged or corroded, the isolation device can replace independent components without affecting the whole isolation device, and the problems that the components of the capillary tube transmitter are difficult to maintain after being damaged and the maintenance cost is high do not exist.

In daily maintenance, if the transmitter needs to be handed out or removed, the transmitter can be handed out after being decompressed through the exhaust port at the top of the condensation barrel 3 only by directly closing the root valve connected with the isolation device and the equipment, the mounting flange 1 does not need to be detached, the potential safety hazard is reduced, and the medium is prevented from splashing and hurting people.

The sizes of the components of the utility model can be determined according to the field use environment, which better accords with the field conditions and is beautiful and standard; if the spacer fluid is corroded or polluted by the tested medium, the spacer fluid can be added again after being drained through draining, and the spacer device can be recycled.

The utility model has simple process, convenient and cheap material and low cost, and reduces the use and maintenance cost of the transmitter 6.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An isolation device for pressure measurement, characterized by: including mounting flange (1), connecting pipe (2), condensation bucket (3), needle valve (4), tee bend (5) and changer (6), mounting flange (1) is connected with connecting pipe (2) one end, and the connecting pipe (2) other end is connected with condensation bucket (3), condensation bucket (3) bottom is connected in needle valve (4) to be connected with tee bend (5) in needle valve (4) rear end, changer (6) are installed to tee bend (5) upper end.

2. An isolation device for pressure measurement as claimed in claim 1, wherein: the mounting flange (1) is directly mounted on a mounting flange of one of a storage tank, a pipeline and pressure vessel equipment.

3. An isolation device for pressure measurement as claimed in claim 1, wherein: the mounting flange (1) is connected with the pressure guide pipe (2) in one of welding or quick joint modes.

4. An isolation device for pressure measurement as claimed in claim 1, wherein: the top of the condensation barrel (3) is provided with an exhaust port, an internal thread is processed at the exhaust port, and the exhaust port is sealed in a mode of adding an O-shaped ring through a bolt.

5. An isolation device for pressure measurement as claimed in claim 1, wherein: the lower end of the tee joint (5) is connected with a pilot shower valve.

6. An isolation device for pressure measurement as claimed in claim 1, wherein: and isolation liquid is added into the condensation barrel (3).

7. An isolation device for pressure measurement as claimed in claim 1, wherein: the installation height of the transmitter (6) is lower than the interface of the condensing barrel (3) and the pressure guide pipe (2).