Cleaning device for mass flow meter of propane dehydrogenation propylene preparation device

By designing a device for bending flexible tubes to extend into the U-shaped tube section of the mass flowmeter and spraying out the cleaning liquid, the problem of incomplete cleaning in the prior art is solved, the measurement accuracy and cleaning efficiency are improved, and the labor intensity is reduced.

CN222306734UActive Publication Date: 2025-01-07TIANJIN BOHAI PETROCHEM CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421077943.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-16
Publication Date
2025-01-07
Estimated Expiration
2034-05-16

AI Technical Summary

Technical Problem

In the prior art, tools cannot be extended into the U-shaped pipe section of the mass flowmeter, resulting in incomplete cleaning and residual inner wall of the measuring tube affecting the measurement accuracy.

Method used

A cleaning device including a cleaning solution tank, a pump body, a valve and a flexible tube is designed. The flexible tube can be bent into the U-shaped tube section, and the nozzle sprays the cleaning liquid to improve the cleaning effect.

Benefits of technology

Through deformation of the flexible tube, the cleaning liquid can be sprayed out at high pressure, thoroughly cleaning the measuring tube, improving the measurement accuracy and cleaning efficiency, and reducing labor intensity.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222306734U_ABST
    Figure CN222306734U_ABST
Patent Text Reader

Abstract

The utility model provides a cleaning device for a mass flow meter of a propane dehydrogenation propylene preparation device, relates to the field of chemical equipment, and solves the technical problem that a measuring tube of the mass flow meter is difficult to clean. The cleaning device comprises a cleaning solution tank, a pump body, a valve and a flexible pipe, the flexible pipe is connected with the cleaning solution tank through a pipeline, the pump body and the valve are located on the pipeline, the pump body is used for driving cleaning solution in the cleaning solution tank to flow into the flexible pipe, and the valve is used for enabling the flexible pipe and the cleaning solution tank to be in a conducting state or a blocking state. The flexible pipe is arranged to be bendable under the action of external force, the end of the flexible pipe is fixedly connected with a spray head, and the spray head is provided with spray holes used for spraying out cleaning liquid. The flexible pipe can deform under the action of external force of the side wall of the U-shaped pipe section, so that the flexible pipe extends into the bottom of the U-shaped pipe section of the mass flow meter, the cleaning solution can be sprayed out at a high speed at the spray head to clean a measuring pipe of the mass flow meter, and the cleaning effect is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a cleaning device for a mass flow meter of a propane dehydrogenation propylene production device. Background Art

[0002] Propylene produced in the propane dehydrogenation process needs to be transported to downstream plant units for further production using mass flow meters. Since the mass flow meter has a measurement accuracy of 0.15%, it is the best choice for trade settlement. However, to ensure that the mass flow meter maintains a stable measurement accuracy, the mass flow meter needs to be disassembled, cleaned and calibrated every year.

[0003] Cleaning of a mass flow meter is somewhat difficult. The mass flow meter includes a measuring tube, and the measuring tube includes a U-shaped tube section.

[0004] The applicant has found that the prior art has at least the following technical problems: the tools in the prior art cannot be inserted into the U-shaped tube section of the measuring tube. Therefore, the mass flow meter is not cleaned thoroughly, and impurities remain on the inner wall of the measuring tube, causing the vibration frequency of the measuring tube to change, thereby affecting the measurement accuracy. Utility Model Content

[0005] The purpose of the utility model is to provide a cleaning device for a mass flow meter of a propane dehydrogenation to propylene device, so as to solve the technical problem that the measuring tube of the mass flow meter in the prior art is difficult to clean; the many technical effects that can be produced by the preferred technical solution among the many technical solutions provided by the utility model are described in detail below.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a cleaning device for a mass flow meter of a propane dehydrogenation to propylene device, comprising a cleaning solution tank, a pump body, a valve and a flexible pipe, wherein

[0008] The flexible tube is connected to the cleaning solution tank through a pipeline, and the pump body and the valve are located on the pipeline, the pump body is used to drive the cleaning solution in the cleaning solution tank to flow into the flexible tube, and the valve is used to make the flexible tube and the cleaning solution tank in a conducting state or a blocking state;

[0009] The flexible tube is bendable under the action of external force, a nozzle is fixedly connected to the end of the flexible tube, and a spray hole for spraying cleaning liquid is arranged on the nozzle.

[0010] Preferably, holes are provided on the tube wall of the flexible tube, and the cleaning liquid can flow out through the holes.

[0011] Preferably, the holes are arranged at intervals along the length direction of the flexible tube.

[0012] Preferably, the flexible tube is a stainless steel flexible tube.

[0013] Preferably, an electric heater is connected to the bottom of the cleaning solution tank, and the electric heater comprises a heating rod, and the heating rod extends into the cleaning solution tank to heat the cleaning solution.

[0014] Preferably, a temperature measuring device is provided on the cleaning solution tank, and the temperature measuring device is used to measure the temperature of the cleaning solution.

[0015] Preferably, the top of the cleaning solution tank is connected to a solution inlet pipe.

[0016] Preferably, a pressure gauge is provided on the pipeline between the flexible tube and the cleaning solution tank, and the pressure gauge is used to measure the fluid pressure in the pipeline.

[0017] Preferably, the valve is a regulating hand valve.

[0018] Compared with the prior art, the cleaning device for the mass flow meter of a propane dehydrogenation to propylene device provided by the utility model has the following beneficial effects: due to the flexible tube being bendable under the action of an external force, the flexible tube can be deformed under the action of an external force on the side wall of the U-shaped tube section, thereby extending the flexible tube to the bottom of the U-shaped tube section of the mass flow meter, starting the pump body, and controlling the pipeline pressure within a certain range through the opening of the valve body, the cleaning solution will be sprayed out at a high speed at the nozzle to clean the measuring tube of the mass flow meter, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of a cleaning device for a mass flow meter of a propane dehydrogenation to propylene device;

[0021] Figure 2 It is a schematic diagram of the state of a cleaning device for a mass flow meter of a propane dehydrogenation to propylene unit during cleaning.

[0022] In the figure, 1, cleaning solution tank; 2, electric heater; 3, temperature measuring device; 4, solution inlet pipe; 5, pump body; 6, pressure gauge; 7, regulating hand valve; 8, flexible tube; 801, hole position; 9, nozzle; 901, spray hole; 10, mass flow meter. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The embodiment of the utility model provides a cleaning device for a mass flow meter of a propane dehydrogenation to propylene device. The flexible tube can extend into the bottom of a U-shaped pipe section of the mass flow meter to improve the cleaning effect.

[0027] Combine the following Figure 1 and Figure 2 The technical solution provided by the utility model is described in more detail.

[0028] The utility model provides a cleaning device for a mass flow meter of a propane dehydrogenation to propylene device, which is characterized by comprising a cleaning solution tank 1, a pump body 5, a valve and a flexible tube 8, wherein the flexible tube 8 is connected to the cleaning solution tank 1 through a pipeline, and the pump body 5 and the valve are located on the pipeline, the pump body 5 is used to drive the cleaning solution in the cleaning solution tank 1 to flow into the flexible tube 8, and the valve is used to make the flexible tube 8 and the cleaning solution tank 1 in a conducting state or a blocking state; the flexible tube 8 is bendable under the action of an external force, a nozzle 9 is fixedly connected to the end of the flexible tube 8, and a spray hole 901 for spraying the cleaning solution is provided on the nozzle 9.

[0029] In the cleaning device for the mass flow meter of the propane dehydrogenation to propylene device of the present embodiment, since the flexible tube 8 is bendable under the action of external force, the flexible tube 8 can be deformed under the action of the external force of the side wall of the U-shaped tube section, so that the flexible tube 8 is extended to the bottom of the U-shaped tube section of the mass flow meter 10, the pump body is started, and the opening of the valve body controls the pipeline pressure within a certain range. The cleaning solution will be sprayed out at a high speed at the nozzle 9 to clean the measuring tube of the mass flow meter 10, thereby improving the cleaning effect.

[0030] As an optional implementation, in order to improve the structural strength of the flexible tube 8 , the flexible tube 8 in this embodiment is a stainless steel flexible tube 8 .

[0031] As an alternative embodiment, see Figure 1 and Figure 2 As shown, a hole 801 is provided on the wall of the flexible tube 8 , and the cleaning liquid can flow out through the hole 801 .

[0032] In this embodiment, after the flexible tube 8 is inserted into the U-shaped tube section of the mass flow meter 10 measuring tube, the cleaning liquid can also flow out from the hole 801 on the tube wall of the flexible tube 8, thereby improving the cleaning efficiency.

[0033] As an alternative embodiment, see Figure 1 and Figure 2 As shown, the holes 801 are arranged at intervals along the length direction of the flexible tube 8 .

[0034] When the flexible tube 8 is inserted into the U-shaped tube section of the mass flow meter 10 measuring tube, the cleaning liquid can flow out from the holes 801 at different positions of the flexible tube 8, thereby improving the cleaning efficiency.

[0035] As an alternative embodiment, see Figure 1 As shown, the bottom of the cleaning solution tank 1 is connected to an electric heater 2, and the electric heater 2 includes a heating rod, which extends into the cleaning solution tank 1 and is used to heat the cleaning solution.

[0036] By heating the cleaning liquid with the electric heater 2 , the temperature of the cleaning liquid can be increased. Within a certain temperature range, the cleaning liquid can better dissolve the dirt in the measuring tube, thereby improving the cleaning effect.

[0037] As an alternative embodiment, see Figure 1 As shown, a temperature measuring device 3 is provided on the cleaning solution tank 1, and the temperature measuring device 3 is used to measure the temperature of the cleaning solution.

[0038] The temperature measuring device 3 can be a bimetallic thermometer in the prior art. The temperature of the cleaning liquid is detected by the temperature measuring device 3. When the temperature of the cleaning liquid reaches a set range (such as 50°C), the electric heater 2 stops heating to prevent the cleaning liquid temperature from being too high.

[0039] As an alternative embodiment, see Figure 1 As shown, the top of the cleaning solution tank 1 is connected to a solution inlet pipe 4 .

[0040] See also Figure 1 As shown, Figure 1 The dotted line position in shows the liquid level of the cleaning solution. The cleaning solution can be injected into the cleaning solution tank 1 through the solution inlet pipe 4, so that the cleaning solution is stored in the cleaning solution tank 1.

[0041] As an alternative embodiment, see Figure 1 As shown, a pressure gauge 6 is provided on the pipeline between the flexible tube 8 and the cleaning solution tank 1 , and the pressure gauge 6 is used to measure the fluid pressure in the pipeline.

[0042] The pressure in the pipeline is displayed by the pressure gauge 6. Under the action of the pump body 5, the cleaning liquid has a certain pressure in the pipeline. The cleaning liquid with a certain pressure is sprayed from the nozzle 9, so that the cleaning liquid can flush the pipe wall and improve the cleaning effect.

[0043] As an alternative embodiment, see Figure 1 As shown, the valve body of this embodiment is an adjustable hand valve 7. The operator can adjust the pressure of the cleaning liquid in the pipeline by adjusting the opening of the hand valve 7, so that the cleaning liquid with a certain pressure flows in the pipeline.

[0044] The cleaning device for the mass flow meter of the propane dehydrogenation to propylene device of this embodiment, when in use:

[0045] The prepared cleaning solution is added to the cleaning solution tank 1 through the solution inlet pipe 4, and is added to about 2 / 3. The electric heater 2 is powered on to work and heat the cleaning solution. Observe the temperature measuring device 3, and stop heating when the temperature reaches about 50 degrees Celsius. Insert the stainless steel flexible tube with holes into the U-shaped section of the measuring tube of the mass flowmeter 10, start the pump body 5, and adjust the opening of the hand valve 7 to control the fluid pressure in the pipeline within a certain range. At this time, the stainless steel flexible tube can be inserted and pulled back and forth, and the cleaning solution will be sprayed out at high speed at the hole position of the flexible tube and the spray hole of the nozzle to clean the measuring tube of the mass flowmeter. The impurities at the bottom of the U-shaped tube will be cleaned under the high-pressure flushing of the nozzle 9. After cleaning one side, close the pump body 5, pour out the sewage of the flowmeter, and extend the stainless steel flexible tube from the other side to repeat the cleaning steps, so that the measuring tube of the mass flowmeter is completely cleaned. After cleaning, the mass flowmeter is purged with high-pressure air to remove residual moisture. At this time, the cleaning of the internal measuring tube of the mass flowmeter is completely completed.

[0046] The cleaning device for the mass flow meter of a propane dehydrogenation to propylene device can reduce labor intensity and improve the cleaning quality and efficiency of the mass flow meter.

[0047] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0049] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A cleaning device for a mass flow meter of a propane dehydrogenation to propylene device, characterized in that: It includes a cleaning solution tank, a pump body, a valve and a flexible pipe, wherein The flexible tube is connected to the cleaning solution tank through a pipeline, and the pump body and the valve are located on the pipeline, the pump body is used to drive the cleaning solution in the cleaning solution tank to flow into the flexible tube, and the valve is used to make the flexible tube and the cleaning solution tank in a conducting state or a blocking state; The flexible tube is bendable under the action of external force, a nozzle is fixedly connected to the end of the flexible tube, and a spray hole for spraying cleaning liquid is arranged on the nozzle.

2. The cleaning device for a mass flow meter of a propane dehydrogenation to propylene device according to claim 1, characterized in that: The flexible tube has holes arranged on its wall, through which the cleaning fluid can flow out.

3. The cleaning device for a mass flow meter of a propane dehydrogenation to propylene device according to claim 2, characterized in that: The holes are arranged at intervals along the length direction of the flexible tube.

4. The cleaning device for a mass flow meter of a propane dehydrogenation to propylene device according to claim 1, characterized in that: The flexible tube is a stainless steel flexible tube.

5. The cleaning device for a mass flow meter of a propane dehydrogenation to propylene device according to claim 1, characterized in that: The bottom of the cleaning solution tank is connected to an electric heater, and the electric heater comprises a heating rod, and the heating rod extends into the cleaning solution tank to heat the cleaning solution.

6. The cleaning device for a mass flow meter of a propane dehydrogenation to propylene device according to claim 1, characterized in that: The cleaning solution tank is provided with a temperature measuring device, and the temperature measuring device is used to measure the temperature of the cleaning solution.

7. The cleaning device for a mass flow meter of a propane dehydrogenation to propylene device according to claim 1, characterized in that: The top of the cleaning solution tank is connected with a solution inlet pipe.

8. The cleaning device for a mass flow meter of a propane dehydrogenation to propylene device according to claim 1, characterized in that: A pressure gauge is provided on the pipeline between the flexible tube and the cleaning solution tank, and the pressure gauge is used to measure the fluid pressure in the pipeline.

9. The cleaning device for a mass flow meter of a propane dehydrogenation to propylene device according to claim 1, characterized in that: The valve is a regulating hand valve.