CN212482579U

CN212482579U - Polytetrafluoroethylene lining necking type floater measuring device

Info

Publication number: CN212482579U
Application number: CN202021768826.XU
Authority: CN
Inventors: 马立伟; 祁宏丽; 吴美景; 付清娅; 张占林
Original assignee: CHENGDE FISCHER-PORTER AUTOMATION EQUIPMENT CO LTD
Current assignee: CHENGDE FISCHER-PORTER AUTOMATION EQUIPMENT CO LTD
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2021-02-05
Anticipated expiration: 2030-08-22

Abstract

The utility model relates to the technical field of flowmeters, in particular to a polytetrafluoroethylene lining necking type floater measuring device which meets various explosion-proof functions and adapts to corrosive liquid and corrosive gas media; including two sets of first flanges, survey buret, heat preservation clamp cover and flowmeter body, install the both ends at surveying buret respectively for two sets of first flanges, be provided with interior bushing pipe on surveying buret's the inside wall, heat preservation clamp cover seal cartridge installation is on surveying buret's lateral wall, and heat preservation clamp cover is equipped with the clearance with surveying buret, survey buret's inside is provided with the float, heat preservation clamp cover's the outside is provided with the support, the flowmeter body is installed on the support and the input of flowmeter body stretches into to surveying buret's inside, the intercommunication is provided with two sets of heat preservation clamp cover violently pipes on heat preservation clamp cover's the lateral wall, and two sets of heat preservation clamp covers and violently manage and all be provided with heat preservation clamp cover flange.

Description

Polytetrafluoroethylene lining necking type floater measuring device

Technical Field

The utility model relates to a technical field of flowmeter especially relates to a polytetrafluoroethylene lining necking down type float measuring device.

Background

According to the discussion of fluid mechanics, the restriction rate is about 0.3-0.5 m/s when measuring liquid and about 3-5 m/s when measuring gas, but in the actual production of customers, the actual flow rate or velocity of the medium is often lower, and the reasons are roughly as follows: in order to reduce the operation cost of production, realize energy conservation and emission reduction, the flow rate is artificially reduced, so that the driving power can be reduced, and the energy is saved; in addition, the expansion of the development scale of the enterprise per se is considered in the future, a large development space is reserved when related equipment such as a production pipeline is designed, and the diameter of the fluid pipeline is designed in an enlarged mode. However, in the actual production process started at the customer site, the phenomenon of 'large pipe diameter and small flow' or 'large pipe diameter and low flow rate' brings inconvenience to the model selection of the instrument for process control.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a satisfy multiple explosion-proof function, adapt to the polytetrafluoroethylene lining necking down type float measuring device of corrosive liquids and corrosive gases's medium.

The utility model relates to a polytetrafluoroethylene lining necking-down float measuring device, which comprises two groups of first flanges, a measuring tube, a heat-insulating jacket and a flowmeter body, wherein the two groups of first flanges are respectively arranged at the two ends of the measuring tube, an inner lining tube is arranged on the inner side wall of the measuring tube, the heat-insulating jacket is hermetically sleeved on the outer side wall of the measuring tube, a gap is arranged between the heat preservation jacket and the measuring pipe, a floater is arranged inside the measuring pipe, a support is arranged outside the heat preservation jacket, the flowmeter body is arranged on the support, the input end of the flowmeter body extends into the measuring pipe, two groups of heat preservation jacket transverse pipes are communicated and arranged on the side wall of the heat preservation jacket, heat preservation jacket flanges are arranged on the two groups of heat preservation jacket transverse pipes, a sealing surface limiter is arranged inside one group of first flanges, and a sealing surface float seat is arranged inside the other group of first flanges.

The utility model discloses a polytetrafluoroethylene lining necking down type float measuring device, the material of surveying buret, interior bushing pipe, sealed face stopper and sealed face float seat is polytetrafluoroethylene.

The utility model discloses a polytetrafluoroethylene lining necking down type float measuring device, the material that two sets of first flanges, heat preservation press from both sides the cover and the heat preservation press from both sides the cover and violently manage is 304 stainless steel.

The utility model discloses a polytetrafluoroethylene lining necking down type float measuring device, the material of float is polytetrafluoroethylene.

The utility model has the advantages that: the medium in the pipeline is corrosive medium, and a large flange and a small measuring pipe are adopted at the same time, so that the pipeline is suitable for a user on-site. A metal pipe float flowmeter with Polytetrafluoroethylene (PTFE) lining for measuring device with high cost performance is designed, the Polytetrafluoroethylene (PTFE) lining is lined in a measuring pipe component of common austenitic stainless steel (type: 304), and the Polytetrafluoroethylene (PTFE) lining has good corrosion resistance, so that the structure completely meets the requirements of customers; meanwhile, the requirements of the size (phi is 88mm) of a sealing surface of a large flange (DN40 and PN16 type) are met, the heat-insulating jacket function (which greatly protects a medium from the influence of the external environment temperature) is realized, the liquid crystal display and (4-20) mA + HART communication functions are realized, and the original intrinsic safety explosion-proof, dust explosion-proof and explosion-proof performances of the metal tube float flowmeter are inherited; the novel product with simple, compact, safe, reliable and effective structure, excellent sealing effect, high measuring accuracy, stable performance and long service life is provided for users, and the novel product belongs to a Polytetrafluoroethylene (PTFE) lining necking type floater measuring device originally invented by the company; the novel seal surface float seat has the advantages that the original function of the seal surface float seat is mainly that a Polytetrafluoroethylene (PTFE) float plays a supporting role in a non-working state, and the newly designed seal surface float seat inherits the original function and can expand the function of a seal surface. The original function of the sealing surface limiter is mainly that a Polytetrafluoroethylene (PTFE) floater plays a limiting role in the full range, and the newly designed sealing surface limiter inherits the original function and can expand the effect of a sealing surface.

Drawings

Fig. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the first flange and measurement tube etc. configuration;

FIG. 3 is a schematic view of the float;

FIG. 4 is a schematic top view of the float;

in the drawings, the reference numbers: 1. a first flange; 2. a measurement tube; 3. and a heat-preserving jacket.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in figures 1 to 4, the utility model relates to a polytetrafluoroethylene lining necking type float measuring device, which comprises two groups of first flanges, a measuring pipe, a heat preservation jacket and a flowmeter body, wherein the two groups of first flanges are respectively arranged at the two ends of the measuring pipe, the inner side wall of the measuring pipe is provided with a lining pipe, the heat preservation jacket is sealed and sleeved on the outer side wall of the measuring pipe, a gap is arranged between the heat preservation jacket and the measuring pipe, a floater is arranged inside the measuring pipe, a support is arranged outside the heat preservation jacket, the flowmeter body is arranged on the support, the input end of the flowmeter body extends into the measuring pipe, two groups of heat preservation jacket transverse pipes are communicated and arranged on the side wall of the heat preservation jacket, heat preservation jacket flanges are arranged on the two groups of heat preservation jacket transverse pipes, a sealing surface limiter is arranged inside one group of first flanges, and a sealing surface float seat is arranged inside the other group of first flanges.

In order to save cost and be processed by the current technology, the diameter of the sealing surface of the measuring device with the Polytetrafluoroethylene (PTFE) lining floater is only 70mm, namely the maximum diameter of the structure after the sealing surface is flanged. In order to realize the 88mm sealing surface diameter of DN40 flange, an innovative design is carried out. The novel float seat has the main innovative design points that the float seat and the limiter are adopted, the original function of the float seat is mainly that a Polytetrafluoroethylene (PTFE) float body plays a supporting role in a non-working state, and the newly designed float seat inherits the original function and can expand the effect of a sealing surface. The original function of the limiter is mainly that the Polytetrafluoroethylene (PTFE) float body plays a limiting role in the full range, and the newly designed limiter inherits the original function and can expand the effect of a sealing surface.

After the M45X 2-6g threads of the stopper are matched and assembled with the M45X 2-6H threads at the upper end of the component drawing, the function of the stopper is as follows: namely, the function of limiting is achieved, and the function of a large sealing surface (phi 88mm) is also achieved.

After the M45X 2-6g threads of the float seat are matched and assembled with the M45X 2-6H threads at the lower end of the component drawing, the function of the float seat is as follows: namely, the Polytetrafluoroethylene (PTFE) float body plays a role of supporting the float in a non-working state, and also plays a role of a large sealing surface (phi 88 mm).

The utility model is suitable for a medium is corrosive medium in the user site pipeline, adopts big flange, little survey buret simultaneously. A Polytetrafluoroethylene (PTFE) lining is lined in a measuring pipe component of common austenitic stainless steel (type: 304), and the Polytetrafluoroethylene (PTFE) lining has good corrosion resistance, so that the structure completely meets the requirements of customers. However, there is a very big design problem, and due to the limitations of processing technology and the influence of technical parameters of meters, the customer requires that the meter has a structure with the technical parameters of a large flange (model DN40, model PN 16) and a small measuring tube (model DN 25), so that the diameter of the sealing surface of a Polytetrafluoroethylene (PTFE) lining inside a measuring tube component is very small (phi is 70mm), and the customer cannot meet the requirement of the size (phi is 88mm) of the sealing surface of the large flange (model DN40, model PN 16) when the customer installs the meter on site, that is, the customer cannot seal the meter, and cannot meet the use requirement of the customer. In order to solve the technical problem, a Polytetrafluoroethylene (PTFE) lining type metal pipe float flowmeter which has high cost performance and meets the requirements of corrosion resistance and various technical parameters of customers is developed and designed according to the standards of the mechanical industry department of the people's republic of China, namely JB/T6844-2015 standard.

The instrument has the functions of on-site pointer indication, liquid crystal display and (4-20) mA + HART communication, meets various explosion-proof (intrinsic safety explosion-proof + dust explosion-proof + explosion-proof) functions, is completely suitable for corrosive liquid and corrosive gas media, meets the special use requirements of each domestic user, is widely accepted by customers, and is widely suitable for various industries such as nuclear industry, chemical industry, petroleum, steel, papermaking, pharmacy, food and the like.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A polytetrafluoroethylene lining necking type floater measuring device is characterized by comprising two groups of first flanges (1), a measuring pipe (2), a heat-preservation jacket (3) and a flowmeter body, wherein the two groups of first flanges are respectively arranged at two ends of the measuring pipe (2), an inner lining pipe is arranged on the inner side wall of the measuring pipe (2), the heat-preservation jacket (3) is hermetically sleeved on the outer side wall of the measuring pipe (2), a gap is formed between the heat-preservation jacket (3) and the measuring pipe (2), a floater is arranged inside the measuring pipe (2), a support is arranged on the outer side of the heat-preservation jacket (3), the flowmeter body is arranged on the support, the input end of the flowmeter body extends into the measuring pipe (2), two groups of heat-preservation jacket transverse pipes are communicated and arranged on the side wall of the heat-preservation jacket (3), and the heat-preservation jacket transverse pipes, a sealing surface limiter is arranged inside one group of the first flanges (1), and a sealing surface float seat is arranged inside the other group of the first flanges (1).

2. A teflon-lined necking-type float measuring device according to claim 1, wherein the measuring tube (2), the lining tube, the sealing surface stopper and the sealing surface float seat are all made of teflon.

3. A teflon-lined necking-type float measuring device according to claim 1, wherein the two sets of the first flange (1), the insulating jacket (3) and the insulating jacket cross tube are all made of 304 stainless steel.

4. A teflon-lined necking-type float measuring device as in claim 1, wherein the float is made of teflon.