CN214600823U

CN214600823U - Mass flowmeter scale removal device

Info

Publication number: CN214600823U
Application number: CN202120091346.2U
Authority: CN
Inventors: 李涛涛; 陈鹏; 杨小军; 张铖; 王丽; 樊亚娟
Original assignee: Shaanxi North Dynamic Co ltd
Current assignee: Shaanxi North Dynamic Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-11-05
Anticipated expiration: 2031-01-14

Abstract

The application discloses mass flow meter scale removal device relates to belt cleaning device technical field, and it is high to have solved mass flow meter inner wall dirt cleaning cost, and the cycle length has the problem of potential safety hazard. The device comprises a cleaning mechanism, a control mechanism, a standard meter, a check valve, a filter and a pump; the outlet end of the pump is communicated with the check valve, and the inlet end of the pump is communicated with the outlet end of the standard meter; the inlet end of the standard meter and the outlet end of the tested meter are respectively communicated with two ends of the filter; the outlet end of the cleaning mechanism is communicated with the inlet end of the detected meter, and the outlet end of the check valve is connected with the inlet end of the cleaning mechanism; the pump, the cleaning mechanism and the standard meter are all connected with the control mechanism, the control mechanism controls the starting and stopping of the pump, controls the opening and closing of the cleaning mechanism and obtains a measurement signal of the standard meter; when the meter to be detected is installed in the device, the control mechanism is connected with the meter to be detected and acquires a measurement signal of the meter to be detected. The device realizes the purpose of cleaning the mass flowmeter quickly and conveniently, is simple and safe to operate, and saves cost.

Description

Mass flowmeter scale removal device

Technical Field

The application relates to the technical field of cleaning devices, in particular to a descaling device for a mass flowmeter.

Background

The volume of a fluid is a function of the temperature and pressure of the fluid and is a dependent variable, and the mass of the fluid is a quantity which does not change along with the changes of time, space temperature and pressure, so the mass of the fluid is generally used for calculating the fluid quantity in activities such as scientific research, production process control, quality management and the like.

With the development of modern science and technology, people design a metering device for directly measuring mass flow, and further promote the progress of flow measurement technology. However, the mass flow meter may have fouling on the inside after many uses, and errors may occur in the measurement of the fluid mass.

At present, in order to clean dirt adhered to the inner wall of a measuring pipe of a mass flow meter, the mass flow meter is usually detached from a pipeline and placed into solvents such as diesel oil, white vinegar and hydrochloric acid for long-time heating and soaking, or is sent to a factory for cleaning, and the like, so that the problem of inner wall scaling is solved, and the methods are high in cost, long in maintenance period and potential safety hazards.

Disclosure of Invention

The embodiment of the application provides a mass flow meter scale removal device, has solved among the prior art to mass flow meter inner wall dirt cleaning cost high, the cycle length, and has the problem of potential safety hazard, has realized that mass flow meter inner wall dirt is quick, the efficient washs.

The embodiment of the utility model provides a mass flowmeter scale removal device, including wiper mechanism, control mechanism, standard table and pump machine;

the outlet end of the pump is communicated with the inlet end of the cleaning mechanism, and the inlet end of the pump is connected with the outlet end of the standard meter; the outlet end of the cleaning mechanism and the inlet end of the standard meter are respectively communicated with two ends of the meter to be detected;

the pump, the cleaning mechanism and the standard meter are all connected with the control mechanism, and the control mechanism can control the start and stop of the pump, control the opening and closing of the cleaning mechanism and acquire a measurement signal of the standard meter;

when the detected meter is arranged on the descaling device of the mass flowmeter, the control mechanism is connected with the detected meter and can acquire a measurement signal of the detected meter.

Furthermore, the descaling device for the mass flowmeter further comprises a filter, wherein the filter is arranged on a pipeline between the detected meter and the standard meter.

Still further, the descaling device for the mass flowmeter further comprises a check valve, wherein the check valve is arranged on a pipeline between the cleaning mechanism and the pump.

Further, the cleaning mechanism comprises a hydrochloric acid tank passage and a water tank passage which are arranged in parallel;

the hydrochloric acid tank passage comprises a first valve, a hydrochloric acid tank and a second valve which are sequentially communicated, the first valve is communicated with the outlet end of the check valve, and the second valve is communicated with the inlet end of the to-be-detected meter;

the water tank passage comprises a third valve, a water tank and a fourth valve which are sequentially communicated, the third valve is communicated with the outlet end of the check valve, and the fourth valve is communicated with the inlet end of the to-be-detected meter.

Further, the control mechanism comprises a computer and a PLC controller;

the computer is respectively in signal connection with the PLC, the detected meter and the standard meter;

the PLC is respectively connected with the first valve, the second valve, the third valve, the fourth valve and the pump.

Still further, the first valve, the second valve, the third valve, and the fourth valve each comprise a pneumatic valve.

Still further, the pump includes an acid-resistant pump.

The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:

the embodiment of the utility model provides a pair of mass flow meter scale removal device is when using, wiper mechanism, quilt examine table, standard table and pump machine communicate in proper order, form closed pipeline, and control mechanism is connected with pump machine, wiper mechanism, examined table and standard table respectively. During cleaning, the control mechanism firstly acquires measurement signals of the detected meter and the standard meter respectively, then controls the cleaning mechanism and the pump to be opened, extracts cleaning liquid in the cleaning mechanism through the pump, and the cleaning liquid flows through the detected meter, the standard meter and the pump in sequence and finally flows back into the cleaning mechanism to clean the detected meter. Adopt the utility model discloses mass flow meter scale removal device only needs to be examined the table and install on this scale removal device, can realize wasing mass flow meter fast, conveniently, easy operation safety, convenient to use, and practice thrift the cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a descaling device for a mass flowmeter according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a control mechanism of a descaling device for a mass flow meter according to an embodiment of the present application.

Icon: 1. a cleaning mechanism; 11. a hydrochloric acid tank passage; 111. a first valve; 112. a hydrochloric acid tank; 113. a second valve; 12. a tank passage; 121. a third valve; 122. a water tank; 123. a fourth valve; 2. a control mechanism; 21. a computer; 22. a PLC controller; 3. a table to be checked; 4. a filter; 5. a standard table; 6. a pump machine; 7. a check valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

With reference to fig. 1 and 2, an embodiment of the present invention provides a mass flowmeter descaling device, which includes a cleaning mechanism 1, a control mechanism 2, a standard meter 5, and a pump 6. The outlet end of the pump 6 is communicated with the inlet end of the cleaning mechanism 1, and the inlet end of the pump 6 is connected with the outlet end of the standard meter 5. The outlet end of the cleaning mechanism 1 and the inlet end of the standard meter 5 are respectively communicated with two ends of the tested meter 3. Pump machine 6, wiper mechanism 1 and standard table 5 all are connected with control mechanism 2, and control mechanism 2 can control opening and shutting of pump machine 6, and the switching of control wiper mechanism 1 acquires the measuring signal of standard table 5. When the meter to be detected 3 is installed on the descaling device of the mass flow meter, the control mechanism 2 is connected with the meter to be detected 3 and can obtain a measuring signal of the meter to be detected 3.

Use the embodiment of the utility model provides a during a mass flowmeter scale removal device, wiper mechanism 1, examined table 3, standard table 5 and pump machine 6 communicate in proper order, form closed pipeline, and control mechanism 2 is connected with pump machine 6, wiper mechanism 1, examined table 3 and standard table 5 respectively. During cleaning, the control mechanism 2 firstly obtains the measurement signals of the detected meter 3 and the standard meter 5 respectively, then controls the cleaning mechanism 1 and the pump 6 to be opened, the cleaning liquid in the cleaning mechanism 1 is extracted through the pump 6, the cleaning liquid flows through the detected meter 3, the standard meter 5 and the pump 6 in sequence and finally flows back into the cleaning mechanism 1 to clean the detected meter 3, and finally the control mechanism 2 measures the measurement signals of the detected meter 3 again and compares the measurement signals with the measurement signals of the standard meter 5 to determine whether the cleaning is performed. Adopt the utility model discloses mass flow meter scale removal device only needs to be examined table 3 and installs on this mass flow meter scale removal device, can realize wasing mass flow meter fast, conveniently, easy operation safety, convenient to use, and practice thrift the cost.

As shown in fig. 1, the descaling device for a mass flowmeter of the present embodiment further includes a filter 4, and the filter 4 is disposed on the pipeline between the examined table 3 and the standard table 5.

In this embodiment, the filter 4 is installed between the table 3 to be inspected and the standard table 5, and when the cleaning liquid flows through the table 3 to be inspected, the dirt in the table 3 to be inspected is taken out, and in order to prevent the dirt from circulating in the pipeline, the filter 4 is installed on the pipeline between the standard table 5 and the table 3 to be inspected, so that the efficiency of cleaning the table 3 to be inspected is ensured, and the replacement frequency of the cleaning liquid is reduced.

As shown in fig. 1, the descaling device for a mass flowmeter of the present embodiment further includes a check valve 7, and the check valve 7 is disposed on the pipeline between the cleaning mechanism 1 and the pump 6.

In this embodiment, a check valve 7 is installed at the inlet end of the cleaning mechanism 1 in the closed pipeline, and the check valve 7 is located at the outlet side of the pump 6, when the pump 6 and the cleaning mechanism 1 are opened, the cleaning solution flows through the pump 6 and enters the cleaning mechanism 1, after the cleaning mechanism 1 is closed, the residual cleaning solution still exists in the pipeline, and the check valve 7 can reduce the mutual mixing of the clean water and the hydrochloric acid solution.

As shown in fig. 1, the cleaning mechanism 1 includes a hydrochloric acid tank passage 11 and a tank passage 12 arranged in parallel. The hydrochloric acid tank passage 11 includes a first valve 111, a hydrochloric acid tank 112, and a second valve 113 that are sequentially communicated, and the first valve 111 communicates with the outlet end of the check valve 7, and the second valve 113 communicates with the inlet end of the table 3 under test. The tank passage 12 includes a third valve 121, a tank 122, and a fourth valve 123, which are sequentially communicated, the third valve 121 being communicated with the outlet end of the check valve 7, and the fourth valve 123 being communicated with the inlet end of the meter under test 3.

Specifically, in this embodiment, the hydrochloric acid tank passage 11 and the water tank passage 12 are arranged in parallel, and when the device is used, the pump 6 and the water tank passage 12 are firstly opened, and the to-be-tested meter 3 and the standard meter 5 are flushed by water in the water tank passage 12 to obtain an initial measurement signal, so that the signal value of the standard meter 5 can be conveniently recorded. Then, the tank passage 12 is closed, the hydrochloric acid tank passage 11 is opened, and the scale removal treatment is performed on the table 3 to be tested by the hydrochloric acid in the hydrochloric acid tank passage 11.

In addition, in the present embodiment, a first valve 111 and a second valve 113 are provided at the inlet end and the outlet end of the hydrochloric acid tank 112, respectively, and a third valve 121 and a fourth valve 123 are provided at the inlet end and the outlet end of the water tank 122, respectively. When the hydrochloric acid tank 112 is used, the control mechanism 2 controls the third valve 121 and the fourth valve 123 to be closed, so that hydrochloric acid in the hydrochloric acid tank 112 is prevented from entering the water tank 122, the water tank 122 contains hydrochloric acid, the concentration of water is increased, and inaccurate measurement of the examined table 3 and the standard table 5 is caused when the water is recycled. When the water tank 122 is used, the control mechanism 2 controls the first valve 111 and the second valve 113 to close, so that water in the water tank 122 is prevented from entering the hydrochloric acid tank 112, hydrochloric acid in the hydrochloric acid tank 112 is diluted, the concentration of the hydrochloric acid is reduced, and the cleaning and descaling effects are reduced when the hydrochloric acid is recycled. Therefore, a first valve 111 and a second valve 113 are respectively disposed at the inlet end and the outlet end of the hydrochloric acid tank 112, and a third valve 121 and a fourth valve 123 are respectively disposed at the inlet end and the outlet end of the water tank 122.

As shown in fig. 2, the control mechanism 2 includes a computer 21 and a PLC controller 22. The computer 21 is respectively connected with the PLC 22, the tested meter 3 and the standard meter 5 through signals. The PLC controller 22 is connected to the first valve 111, the second valve 113, the third valve 121, the fourth valve 123, and the pump 6, respectively.

When the descaling device of the embodiment is used, the operation steps are as follows:

first, the computer 21 controls the PLC controller 22 to activate the third valve 121, the fourth valve 123 and the pump 6, and opens the check valve 7, and the pump 6 pumps the water in the water tank 122 to flush the inspected meter 3 and the standard meter 5, so that the computer 21 acquires initial measurement signals of the inspected meter 3 and the standard meter 5.

Then, the computer 21 controls the PLC controller 22 to close the third valve 121 and the fourth valve 123, open the first valve 111 and the second valve 113, remove the scales in the table 3 to be inspected by pumping the hydrochloric acid in the hydrochloric acid tank 112 using the pump 6, observe the change of the reading (measurement signal value) of the table 3 to be inspected on the computer 21, and close the first valve 111 and the second valve 113 when the reading is consistent with the reading of the standard table 5.

Finally, the computer 21 controls the PLC controller 22 to open the third valve 121 and the fourth valve 123 again, to flush the inspected meter 3 and the standard meter 5 again, and after the flushing is completed, to close the third valve 121, the fourth valve 123 and the pump 6, and to close the check valve 7.

It should be noted that: for stubborn scales, a hydrochloric acid tank passage 11 and a water tank passage 12 can be opened repeatedly until the readings of the detected table 3 are consistent with those of the standard table 5; regularly calibrating the standard table 5, comparing the readings of the standard table 5 and the detected table 3, and calibrating the detected table 3; the filter 4 is periodically cleaned and the water tank 122 and the liquid in the hydrochloric acid tank 112 are periodically replaced.

The first valve 111, the second valve 113, the third valve 121, and the fourth valve 123 may be pneumatic valves, and the pneumatic valves have the advantages of high reliability, rapid performance, fire and explosion protection, and the like. Of course, the first valve 111, the second valve 113, the third valve 121, and the fourth valve 123 may be solenoid valves, hydraulic valves, or the like.

The pump 6 includes, but is not limited to, an acid-resistant pump. Since the hydrochloric acid with high concentration is contained in the hydrochloric acid tank 112, the pump 6 adopts an acid-proof pump capable of preventing corrosion, and the service life is prolonged.

The mass flowmeter descaling device that this embodiment provided can design the small-size device of reducing the version with whole mechanism, can conveniently carry to the scene at any time and carry out the operation, also can install whole mechanism indoor completion batch operation. When the cleaning agent is used on site, the rapid and convenient cleaning of the inspected table 3 can be achieved, and the cleaning agent is simple to operate, convenient to use, safe, energy-saving and environment-friendly.

In this embodiment, both the examined table 3 and the reference table 5 are mass flow meters.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.

Claims

1. A descaling device for a mass flowmeter is characterized by comprising a cleaning mechanism (1), a control mechanism (2), a standard meter (5) and a pump (6);

the outlet end of the pump (6) is communicated with the inlet end of the cleaning mechanism (1), and the inlet end of the pump (6) is connected with the outlet end of the standard meter (5); the outlet end of the cleaning mechanism (1) and the inlet end of the standard meter (5) are respectively communicated with two ends of the to-be-detected meter (3);

the pump (6), the cleaning mechanism (1) and the standard meter (5) are all connected with the control mechanism (2), and the control mechanism (2) can control the start and stop of the pump (6), control the opening and closing of the cleaning mechanism (1) and acquire a measurement signal of the standard meter (5);

when the meter to be detected (3) is arranged on the descaling device of the mass flowmeter, the control mechanism (2) is connected with the meter to be detected (3) and can acquire a measurement signal of the meter to be detected (3).

2. A mass flow meter descaling device according to claim 1, further comprising a filter (4), wherein the filter (4) is disposed on the pipe between the examined meter (3) and the standard meter (5).

3. A mass flow meter descaling device according to claim 1 or 2, further comprising a check valve (7), wherein the check valve (7) is arranged on the pipeline between the cleaning mechanism (1) and the pump (6).

4. A mass flow meter descaling device according to claim 3, wherein the cleaning mechanism (1) comprises a hydrochloric acid tank passage (11) and a water tank passage (12) arranged in parallel;

the hydrochloric acid tank passage (11) comprises a first valve (111), a hydrochloric acid tank (112) and a second valve (113) which are sequentially communicated, the first valve (111) is communicated with the outlet end of the check valve (7), and the second valve (113) is communicated with the inlet end of the to-be-detected meter (3);

the water tank passage (12) comprises a third valve (121), a water tank (122) and a fourth valve (123) which are sequentially communicated, the third valve (121) is communicated with the outlet end of the check valve (7), and the fourth valve (123) is communicated with the inlet end of the to-be-detected meter (3).

5. A mass flow meter descaling device according to claim 4, wherein the control mechanism (2) comprises a computer (21) and a PLC controller (22);

the computer (21) is respectively in signal connection with the PLC controller (22), the to-be-detected meter (3) and the standard meter (5);

the PLC (22) is respectively connected with the first valve (111), the second valve (113), the third valve (121), the fourth valve (123) and the pump (6).

6. A mass flow meter descaling device according to claim 4, wherein the first valve (111), the second valve (113), the third valve (121) and the fourth valve (123) each comprise a pneumatic valve.

7. The mass flow meter descaling device according to claim 1, wherein the pump (6) comprises an acid-resistant pump.