CN219675158U - Pipeline heat preservation type balance flowmeter - Google Patents

Abstract

The utility model discloses a pipeline heat-preservation type balance flowmeter, which comprises a measuring pipe, wherein the measuring pipe is connected with a pressure-taking pipe, a first heat-preservation pipe is sleeved outside the measuring pipe, a second heat-preservation pipe is sleeved outside the pressure-taking pipe, the second heat-preservation pipe is communicated with the first heat-preservation pipe, an outer heat-preservation type flange gate valve is commonly connected above the pressure-taking pipe and the second heat-preservation pipe, and a double-flange transmitter is communicated above the outer heat-preservation type flange gate valve; the heat-conducting pipe is arranged outside the outer heat-preserving flange gate valve, the other end of the heat-conducting pipe is communicated with the first heat-preserving pipe, the first heat-preserving pipe is provided with a heat medium inlet, and the heat-conducting pipe is provided with a heat medium outlet. The flowmeter is additionally provided with the measuring pipe and the external heat-insulating pipe of the pressure taking pipe, so that the medium is prevented from solidifying, and the external heat-insulating flange gate valve is replaced at the flange gate valve position of the flowmeter, so that the balance flowmeter is integrally connected with the flange gate valve through the connecting flange of the heat conducting pipe and the heat conducting pipe, and a steam tracing cycle is formed.

Description

Pipeline heat preservation type balance flowmeter

Technical Field

The utility model relates to the field of flow detection in pipelines, in particular to a pipeline heat-insulation type balance flowmeter.

Background

In the existing industrial metering scheme, along with the wide application of the balance flowmeter, the types of media required to be adapted to the balance flowmeter in various pipelines are more and more, however, partial media such as asphalt are available, when the temperature is too low, the self is easy to solidify, and the die box of the double-flange transmitter is easy to damage after solidification.

Disclosure of Invention

The utility model discloses a pipeline heat-preservation type balance flowmeter, which is characterized in that an external heat-preservation pipe for a measuring pipe and a pressure-taking pipe is added on the basis of the original flowmeter, the special technological requirements are met, an external heat-preservation type flange gate valve is replaced at a flange gate valve, and the balance flowmeter is integrally connected with the flange gate valve through a connecting flange of a heat-conducting pipe and a heat-conducting pipe, so that a steam tracing cycle is formed. After steam tracing is connected, the problem that solidification is easy to form in a pipeline measured by a flowmeter is avoided, and meanwhile, the solidification problem of a pressure taking device is also prevented, so that the pressure taking device can achieve full-scale heat preservation, a stable differential pressure signal can be obtained, and then the volume flow and the mass flow are calculated through a Bernoulli equation. The outer heat preservation type flange gate valve is used, so that the double-flange transmitter is more convenient to replace, the double-flange transmitter can be replaced in time without shutdown and production stopping by only closing the outer heat preservation type flange gate valve, the double-flange transmitter is more convenient, and the benefit is increased.

The utility model provides a pipeline heat preservation type balance flowmeter, includes the survey buret, the survey buret is connected with and gets the pressure pipe, the outside cover of survey buret is equipped with first heat preservation pipe, it is equipped with the second heat preservation pipe to get the outside cover of pressure pipe, second heat preservation pipe and first heat preservation pipe intercommunication each other, it is connected with outer heat preservation type flange gate valve jointly to get pressure pipe and second heat preservation pipe top, outer heat preservation type flange gate valve top intercommunication has the double flange changer; the heat-conducting pipe is arranged outside the outer heat-preserving flange gate valve, the other end of the heat-conducting pipe is communicated with the first heat-preserving pipe, the first heat-preserving pipe is provided with a heat medium inlet, and the heat-conducting pipe is provided with a heat medium outlet.

Preferably, the pressure taking pipe is provided with a pressure taking flange at the top, and the pressure taking flange is detachably connected with the external heat insulation flange gate valve.

Preferably, a sealing gasket is arranged between the external heat-preservation flange gate valve and the pressure taking flange.

Preferably, a porous balance piece is arranged in the measuring tube.

Preferably, connecting flanges are arranged at two ends of the measuring tube, and the connecting flanges are connected with the measured pipeline through bolts and nuts.

The utility model has the beneficial effects that:

1. according to the utility model, the heat preservation pipes are additionally arranged outside the measuring pipe and the pressure taking pipe, so that the low-temperature easily-solidified medium is ensured to keep a better fluid state, and the solidification probability is reduced.

2. The heat preservation type flange gate valve is more convenient to replace the double-flange transmitter, the gate valve can be replaced by closing, shutdown and production stopping are not needed, the benefit is increased, and the loss is reduced.

3. The first heat preservation pipe, the second heat preservation pipe and the heat conduction pipe are communicated to form a heat tracing cycle, so that the temperature balance of each part is ensured, the solidification probability is reduced, and the damage rate of the flange die box is reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of the present utility model;

FIG. 2 is a perspective view of the structure of the present utility model;

in the figure: 1. porous balancing piece 2, measuring pipe, 3, first insulating pipe, 4, heat pipe, 5, heat pipe flange, 6, first bolt and nut, 7, measuring pipe flange, 8, second bolt and nut, 9, pressure taking pipe, 10, second insulating pipe, 11, pressure taking flange, 12, third bolt and nut, 13, external insulating flange gate valve

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "inner", "outer", "left", "right" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. A step of

The utility model discloses a pipeline heat-preserving type balance flowmeter as shown in fig. 1-2, which is characterized in that a first heat-preserving pipe 3 is sleeved outside a measuring pipe 2, two pressure-taking pipes 9 with axes perpendicular to the axis of the measuring pipe and parallel to each other are communicated above the measuring pipe, a second heat-preserving pipe 10 is sleeved outside the pressure-taking pipes, the second heat-preserving pipes are communicated with the first heat-preserving pipes, an outer heat-preserving flange gate valve 13 is commonly connected above each pressure-taking pipe 9 and the corresponding second heat-preserving pipe 10, and a double-flange transmitter is communicated above the outer heat-preserving flange gate valve. The heat-conducting pipes are arranged outside the outer heat-preserving flange gate valve, the heat-conducting pipes are multi-section, two outer heat-preserving flange gate valves are communicated through one section of heat-conducting pipe, and the heat-preserving flange gate valve is communicated with the first heat-preserving pipe through the other section of heat-conducting pipe. One end of the lower part of the first heat preservation pipe 3 is provided with a heating medium inlet through a heat conduction pipe connecting flange 5, and the connecting flange is communicated with a heat source through a first bolt and nut 6. The tail end of the outer heat-preservation flange gate valve is connected with the other end heat-conducting pipe, the tail end of the heat-conducting pipe is provided with a heat medium outlet, and the first heat-preservation pipe, the second heat-preservation pipe and the heat-conducting pipe form a heat tracing cycle.

The top of the pressure taking pipe is provided with a pressure taking flange 11 which is detachably connected with an external heat preservation type flange gate valve through a third bolt and a third nut, and a sealing gasket is additionally arranged at the joint of the two flanges.

The measuring tube is internally provided with a porous balancing piece 1, and the pressure measuring tube measures the pressure of the fluid before and after passing through the porous balancing piece and calculates to obtain the flow parameter of the fluid.

The two ends of the measuring tube are provided with connecting flanges 7 which are detachably connected with the measured pipeline through second bolts and nuts 8, and gaskets are additionally arranged at the connecting positions to seal and prevent leakage.

The structure can prevent the medium from solidifying at low temperature, and can stop production without shutdown when the solidifying medium damages the die box of the double-flange transmitter, and the die box can be replaced by closing the external heat-insulation flange gate valve, so that the structure is suitable for special environments and special processes, and the metering is more accurate.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. 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 utility model 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 (5)

1. The utility model provides a pipeline heat preservation type balance flowmeter which is characterized in that, includes the survey pipe, survey pipe is connected with and gets the pressure pipe, survey pipe outside cover is equipped with first heat preservation pipe, it is equipped with the second heat preservation pipe to get the outside cover of pressure pipe, second heat preservation pipe and first heat preservation pipe intercommunication each other, it is connected with outer heat preservation type flange gate valve jointly to get pressure pipe and second heat preservation pipe top, outer heat preservation type flange gate valve top intercommunication has the double flange changer; the heat-conducting pipe is arranged outside the outer heat-preserving flange gate valve, the other end of the heat-conducting pipe is communicated with the first heat-preserving pipe, the first heat-preserving pipe is provided with a heat medium inlet, and the heat-conducting pipe is provided with a heat medium outlet.

2. The pipeline heat preservation type balance flowmeter according to claim 1, wherein the pressure taking pipe is provided with a pressure taking flange at the top, and the pressure taking flange is detachably connected with the external heat preservation type flange gate valve.

3. The pipeline heat preservation type balance flowmeter according to claim 2, wherein a sealing gasket is arranged between the outer heat preservation type flange gate valve and the pressure taking flange.

4. The balance flowmeter of claim 2, wherein the measuring tube is internally provided with a porous balance plate.

5. The pipeline heat preservation type balance flowmeter according to claim 2, wherein connecting flanges are arranged at two ends of the measuring pipe, and the connecting flanges are connected with the pipeline to be measured through bolts and nuts.