CN211626635U

CN211626635U - Steam flowmeter calibrating device

Info

Publication number: CN211626635U
Application number: CN202020292136.5U
Authority: CN
Inventors: 李健隽; 苑德臣
Original assignee: Harbin Institute Of Measurement & Verification
Current assignee: Harbin Institute Of Measurement & Verification
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-10-02
Anticipated expiration: 2030-03-10

Abstract

Steam flowmeter calibrating installation, the utility model relates to a mass method steam flow calibrating installation is weighed in condensation. Multiple groups of verification data under actual application conditions can be obtained. The steam-water separator comprises a steam access pipeline, a flow regulating main valve, a pressure stabilizing tank, a temperature modulating pipeline, an electric heating assembly, a first heat exchange pipe, a second heat exchange pipe, a weight detection device, a heat exchanger and a heat exchange chamber; the steam access pipeline is communicated with the pressure stabilizing tank through a flow regulating main valve and further communicated with an inlet of the temperature regulating pipeline, an outlet of the temperature regulating pipeline is communicated with the to-be-detected meter, and the to-be-detected meter is communicated with the heat exchange chamber and a container cavity of the weight detection device; the electric heating assembly is arranged on the outer surface of the pipe body of the temperature modulation pipeline, and the first heat exchange pipe is arranged on the outer surface of the pipe body of the temperature modulation pipeline. The flow and the pressure of steam of a detected meter can be changed by changing the opening degree of the flow regulating main valve, and the temperature of the steam can be changed by the electric heating assembly and the first heat exchange tube, so that a plurality of groups of corresponding detection data are correspondingly obtained.

Description

Steam flowmeter calibrating device

Technical Field

The utility model relates to a calibrating installation of steam flowmeter, concretely relates to condensation mass method steam flow calibrating installation of weighing.

Background

Steam is a very important carrier energy in China and is widely applied to various aspects such as turbine driving, disinfection and cleaning, heating and the like. The steam has the characteristics of cleanness, environmental protection, high energy efficiency and the like. The supplier and the supplier calculate the steam consumption through the steam flow meter to settle the trade. Before the steam flow meter is installed and used, a user needs to firstly carry out metering and tracing and then send the steam flow meter to a national legal metering and calibrating organization or an authorization station for metering and calibrating, so that accurate and fair transaction is realized.

The mass method steam flow calibrating device is a conventional steam flow instrument calibrating method and has the advantages of high calibrating precision, low cost, easiness, convenience and operation and the like, so that the mass method steam flow calibrating device is always used in basic level calibrating departments. With the advent of the cloud era, big data technologies have attracted more and more attention. Big data (big data) can make people have stronger insight discovery, but how to mine, extract and construct diversified parameters is the key place to guarantee the accurate availability of the parameters. Current steam flow verification devices do not take these requirements into account and therefore do not achieve the above described operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can change at any time and apply flow, pressure and the temperature of being examined and determine steam on the table to obtain the steam flowmeter calibrating installation of multiunit examination data under the actual application condition.

The device comprises a steam access pipeline 1, a flow regulating main valve 2, a pressure stabilizing tank 3, a temperature regulating pipeline 4, an electric heating assembly 5, a first heat exchange pipe 6, a second heat exchange pipe 7, a weight detection device 8, a heat exchanger 9 and a heat exchange chamber 11;

one end of a steam access pipeline 1 is communicated with a municipal heating network, the other end of the steam access pipeline 1 is communicated with an inlet of a flow regulating main valve 2, an outlet of the flow regulating main valve 2 is communicated with an inlet of a pressure stabilizing tank 3, an outlet of the pressure stabilizing tank 3 is communicated with an inlet of a temperature regulating pipeline 4, an outlet of the temperature regulating pipeline 4 is communicated with an inlet of a detected meter 10, an outlet of the detected meter 10 is communicated with an inlet of a heat exchange chamber 11, and an outlet of the heat exchange chamber 11 is communicated with a container cavity of a weight detection device 8; the electric heating assembly 5 is arranged on the outer surface of the tube body of the temperature modulation tube 4, and the first heat exchange tube 6 is arranged on the outer surface of the tube body of the temperature modulation tube 4 to realize refrigeration and heat exchange; the second heat exchange tube 7 is arranged in the heat exchange chamber 11; the first heat exchange tube 6 is connected with the heat exchanger 9 through the temperature control valve 9-1 to obtain a cold source, and the second heat exchange tube 7 is connected with the heat exchanger 9 to obtain the cold source.

When the device works, a municipal heat supply network is connected to obtain steam. The examiner controls the opening of the flow regulating main valve 2 to obtain steam at a certain flow rate and pressure. The steam flow and pressure are stabilized by the surge tank 3. The first heat exchange tube 6 and the electric heating assembly 5 can respectively carry out cold and hot bidirectional regulation on the temperature of steam, and the steam obtains flow data when flowing through the detected meter 10. The steam is condensed into water through the heat exchange chamber 11, and the weight information of the water is extracted by the weight detection device 8, thereby completing the verification work. The flow and the pressure of the steam applied to the calibrated meter 10 can be changed by changing the opening degree of the flow regulating main valve 2, and the temperature of the steam can be changed to a certain extent by controlling the electric heating assembly 5 and the first heat exchange pipe 6, so that a plurality of groups of corresponding calibration data can be correspondingly obtained.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention, and fig. 2 is a schematic view of the second and third embodiments.

Detailed Description

The first embodiment is as follows: this embodiment is explained with reference to fig. 1.

The first heat exchange tube 6 is tightly wound on the outer surface of the temperature modulation pipeline 4 with a section of length, and good heat exchange can be realized due to the close fit of the tube wall. When refrigeration is needed, the temperature control valve 9-1 is opened, and circulating cooling water in the heat exchanger 9 flows into the first heat exchange pipe 6 and flows out to take away heat.

The second heat exchange tube 7 is a section of coiled tube and is arranged in the heat exchange chamber 11 and is contacted with hot steam, and circulating cooling water in the heat exchanger 9 flows into the second heat exchange tube 7 and flows out to take away heat and accelerate the speed of condensing the steam into water.

The inner surfaces of the steam access pipe 1 and the temperature modulation pipe 4 are hydrophobic material layers. So set up, can reduce water and persist in the pipeline, improve the flow detection accuracy.

In addition, a standard flow meter may be provided between the outlet of the meter under test 10 and the inlet of the heat exchange chamber 11. The purpose of connecting a standard flow meter in series is that the test results can be compared and verified.

In addition, a pressure regulating valve 13 can be arranged between the outlet of the pressure stabilizing tank 3 and the inlet of the temperature modulating pipeline 4, and the pressure of steam in the temperature modulating pipeline 4 is further regulated by the pressure regulating valve, so that the defect that the flow and pressure of the flow regulating main valve 2 are not accurate on the whole is overcome. The pressure can be adjusted independently.

The device utilizes a municipal heat supply network heat source, not only can greatly reduce energy consumption cost, but also can ensure that the verification medium meets the working condition state, not only can meet the requirements of national verification regulations and meet the verification requirements of a quality method, but also is additionally provided with a standard meter, realizes the integration of the standard meter method and the quality method, meets the requirements of various parameters of different steam flow meters as far as possible, and can also adjust different flow, pressure and temperature and reproduce various complicated working condition states.

The second embodiment is as follows: the present embodiment will be specifically described below with reference to fig. 2. This embodiment is further explained and defined on the basis of the first embodiment. In the embodiment, the water cooling tank 6-1 is further included, water is contained in the water cooling tank 6-1, and the second heat exchange tube 7 is soaked in the water, so that the arrangement is realized, the heat exchange efficiency is improved by using the water, and the energy is saved.

The third concrete implementation mode: the present embodiment will be specifically described below with reference to fig. 2. This embodiment is further explained and defined on the basis of the first embodiment. The electric heating assembly 5 comprises an oil bath box 5-1, a resistance power heating device 5-2 and heat conducting fins 5-3, wherein the oil bath box 5-1 is filled with heat conducting oil, the resistance power heating device 5-2 is soaked in the heat conducting oil, the heat conducting fins 5-3 are distributed on the outer surface of the temperature modulation pipeline 4, and the heat conducting fins 5-3 are soaked in the heat conducting oil. So set up, utilize heat conduction fin and conduction oil to improve heat exchange efficiency, the energy can be saved.

The fourth concrete implementation mode: the present embodiment will be specifically described below with reference to fig. 1. This embodiment is further explained and defined on the basis of the first embodiment. The temperature regulating valve further comprises a commutator 101 and a heat recovery device 102, wherein an inlet of the commutator 101 is communicated with an outlet of the pressure regulating valve 13, one outlet of the commutator 101 is communicated with an inlet of the temperature regulating pipeline 4, and the other outlet of the commutator 101 is communicated with an inlet of the heat recovery device 102. In this arrangement, at the beginning of the verification operation, the steam is switched to flow into the heat recovery device 102 by the diverter 101, so that the steam does not flow through the pipeline in which the verified meter 10 is located until the steam flow reaches a steady state in the system. When the steam flow reaches a stable state in the system, the steam flow is switched to be communicated with a pipeline where the detected meter 10 is located, so that the accuracy of detection is ensured, and valuable steam cannot be wasted.

To ensure that there is no leakage, a control valve 16 is provided between the diverter 101 and the heat recovery device 102.

In addition, the heat obtained from the first heat exchange tube 6 and the second heat exchange tube 7 in the heat exchanger 9 can be exchanged to the heat recovery device 102. The heat recovery device 102 may be a container that stores water.

Claims

1. The steam flowmeter calibrating device is characterized by comprising a steam access pipeline (1), a flow regulating main valve (2), a pressure stabilizing tank (3), a temperature modulating pipeline (4), an electric heating assembly (5), a first heat exchange pipe (6), a second heat exchange pipe (7), a weight detecting device (8), a heat exchanger (9) and a heat exchange chamber (11);

one end of a steam access pipeline (1) is communicated with a municipal heat supply network, the other end of the steam access pipeline (1) is communicated with an inlet of a flow regulating main valve (2), an outlet of the flow regulating main valve (2) is communicated with an inlet of a pressure stabilizing tank (3), an outlet of the pressure stabilizing tank (3) is communicated with an inlet of a temperature regulating pipeline (4), an outlet of the temperature regulating pipeline (4) is communicated with an inlet of a detected meter (10), an outlet of the detected meter (10) is communicated with an inlet of a heat exchange chamber (11), and an outlet of the heat exchange chamber (11) is communicated with a container cavity of a weight detection device (8); the electric heating assembly (5) is arranged on the outer surface of the tube body of the temperature modulation tube (4), and the first heat exchange tube (6) is arranged on the outer surface of the tube body of the temperature modulation tube (4) to realize refrigeration and heat exchange; the second heat exchange tube (7) is arranged in the heat exchange chamber (11); the first heat exchange tube (6) is connected with the heat exchanger (9) through the temperature control valve (9-1) to obtain a cold source, and the second heat exchange tube (7) is connected with the heat exchanger (9) to obtain the cold source.

2. The steam flow meter verification device according to claim 1, wherein the first heat exchange tube (6) is tightly wound around the outer surface of a length of the temperature modulation tube (4).

3. The verification device for the steam flowmeter as claimed in claim 1, wherein the second heat exchange tube (7) is a segment of a coiled tube.

4. The steam flowmeter calibrating device as recited in claim 1, wherein the inner surfaces of the steam inlet pipe (1) and the temperature modulating pipe (4) are hydrophobic material layers.

5. A steam flowmeter calibrating device as claimed in any one of claims 1 to 4, wherein a standard flow meter is provided between the outlet of the calibrated meter (10) and the inlet of the heat exchange chamber (11).

6. The steam flowmeter calibrating device as recited in claim 5, further comprising a water cooling tank (6-1), wherein the water cooling tank (6-1) contains water, and the second heat exchange tube (7) is immersed in the water.

7. The steam flow meter calibrating apparatus according to claim 5, wherein the electric heating assembly (5) comprises an oil bath box (5-1), a resistance power heating device (5-2) and heat conducting fins (5-3), the oil bath box (5-1) contains heat conducting oil, the resistance power heating device (5-2) is soaked in the heat conducting oil, the heat conducting fins (5-3) are distributed on the outer surface of the temperature modulation pipeline (4), and the heat conducting fins (5-3) are soaked in the heat conducting oil.

8. The apparatus for calibrating a steam flow meter as claimed in claim 1, characterized in that a pressure regulating valve (13) is provided between the outlet of the surge tank (3) and the inlet of the temperature modulation conduit (4).

9. The steam flowmeter calibrating device as recited in claim 8, further comprising a commutator (101) and a heat recovery device (102), wherein an inlet of the commutator (101) is communicated with an outlet of the pressure regulating valve (13), one outlet of the commutator (101) is communicated with an inlet of the temperature modulating pipeline (4), and the other outlet of the commutator (101) is communicated with an inlet of the heat recovery device (102).