Heat conduction type flow switch

Abstract

The utility model discloses a heat conduction type flow switch which comprises a pipeline, a fixing mechanism and a flow switch, the fixing mechanism is installed on the pipeline and comprises a first fixing ring and a second fixing ring, the first fixing ring and the second fixing ring are both of a semi-annular structure, and fixing plates are arranged at the ends of the first fixing ring and the second fixing ring. Fixing holes are symmetrically formed in the surface of the fixing plate, a mounting hole is formed in the middle of the surface of the second fixing ring, the side wall of the flow switch is embedded into the mounting hole, and a mounting plate is fixed to the surface of the flow switch. The flow switch is fixed on the pipeline through the fixing mechanism, after the fixing mechanism is installed on the pipeline, the flow switch is inserted into the pipeline from the installation hole formed in the surface of the fixing mechanism, the installation plate and the second fixing ring are fixed through the fixing bolt, the push plate is pushed in the fastening process, the inflation bag is extruded, and the flow switch is fixed through the inflation bag. The inflatable bag inflates the reinforcing airbag strip and improves the fitting degree with the surface of the pipeline, so that the mounting stability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow control devices, in particular to a thermal conduction flow switch. Background Art

[0002] The thermal conductivity flow switch is designed using heat diffusion technology. It detects the size of the flow rate based on the size of the heat diffusion. When the liquid flow rate exceeds the user-set value, the relay will operate to detect and control the flow rate. Therefore, it is called a thermal conductivity flow switch. Some people also call it a thermal conductivity flow indicator, thermal conductivity flow switch or thermal conductivity flow controller, etc. In fact, they are all the same. The thermal conductivity flow switch is based on the thermal principle and contains two resistors in a closed probe. One of them is heated as a detection resistor and the other is not heated as a reference resistor. When the medium flows, the heat on the heated resistor is taken away and the resistance value is changed. The difference between the two resistors is used as the basis for judging the flow rate. It is a flow switch with extremely wide applications and can be widely used in pipeline flow detection in various industries such as petroleum, chemical, electric power, water treatment, metallurgy, papermaking, ships and boilers.

[0003] When an existing thermal conductivity flow switch is installed on a vertically arranged pipeline, as the use time increases and the medium in the pipeline continuously impacts the probe and some fixing columns, it is easy to cause the installation structure of the thermal conductivity flow switch on the pipeline to be unstable, resulting in the risk of slipping. Therefore, a thermal conductivity flow switch is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a thermal conductivity flow switch, which solves the problem that when the existing thermal conductivity flow switch is installed on a vertically arranged pipeline, the installation structure of the thermal conductivity flow switch on the pipe section is unstable, resulting in the risk of sliding, as the use time increases and the medium in the pipe section continuously impacts the probe and part of the fixed column.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a thermal conductivity flow switch, including a pipeline, a fixing mechanism and a flow switch, the fixing mechanism is installed on the pipeline and the fixing mechanism includes a fixing ring 1 and a fixing ring 2, the fixing ring 1 and the fixing ring 2 are both semi-annular structures and the ends of the fixing ring 1 and the fixing ring 2 are both provided with fixing plates, the surface of the fixing plate is symmetrically provided with fixing holes, the middle part of the surface of the fixing ring 2 is provided with a mounting hole, the side wall of the flow switch is embedded in the mounting hole and the surface of the flow switch is fixed with a mounting plate, and the mounting plate is fixedly connected to the fixing ring 2.

[0008] As a further preferred embodiment of the utility model, clamping grooves are arranged on opposite surfaces of the fixing ring 1 and the fixing ring 2, and grooves are opened on the surfaces of the clamping grooves, and reinforced airbag strips are embedded and connected in the grooves.

[0009] As a further preferred embodiment of the present invention, the surface of the reinforced airbag strip is bonded to the pipe and a plurality of anti-slip convex points are formed on the bonding surface between the reinforced airbag strip and the pipe.

[0010] As a further preferred embodiment of the utility model, movable grooves are symmetrically arranged inside the fixed ring 2, an inflatable bag is installed inside the movable groove, a connecting tube is arranged at one end of the inflatable bag and the end of the connecting tube is connected to the reinforcing airbag strip, and a push plate is installed at the other end of the inflatable bag.

[0011] As a further preferred embodiment of the present invention, screw holes are symmetrically provided on the surface of the second fixing ring and the ends of the screw holes are connected to the movable grooves.

[0012] As a further preferred embodiment of the present invention, connecting plates are respectively provided on both sides of the mounting plate, connecting holes are opened on the surfaces of the connecting plates, fixing bolts are embedded in the connecting holes, the ends of the fixing bolts pass through the connecting holes and are threadedly connected to the screw holes, and a push plate is installed on the surface of the fixing bolts.

[0013] (III) Beneficial effects

[0014] The utility model provides a thermal conductivity flow switch, which has the following beneficial effects:

[0015] The utility model fixes the flow switch on the pipeline through a fixing mechanism. The fixing mechanism is first installed on the pipeline, and then the flow switch is inserted into the pipeline through a mounting hole opened on the surface of the fixing mechanism. The mounting plate and the fixing ring 2 are fixed by fixing bolts. During the tightening process, the push plate is pushed and the airbag is squeezed. The airbag inflates the reinforced airbag strip and improves the fit with the pipeline surface, thereby further improving the installation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the thermal conductivity flow switch of the utility model;

[0017] Figure 2 This is a structural diagram of the connection between the fixing mechanism and the flow switch of the utility model;

[0018] Figure 3 This is an internal structure diagram of the fixing mechanism of the utility model.

[0019] In the figure: 1. pipeline; 2. fixing mechanism; 3. fixing ring 1; 4. clamping groove; 5. groove; 6. reinforcement airbag strip; 7. fixing plate; 8. fixing hole; 9. connecting hole; 10. fixing bolt; 11. flow switch; 12. mounting plate; 13. push plate; 14. connecting plate; 15. fixing ring 2; 16. inflatable bag; 17. screw hole; 18. push plate; 19. connecting pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The embodiment of the utility model provides a technical solution: a thermal conductivity flow switch 11, including a pipeline 1, a fixing mechanism 2 and a flow switch 11, the fixing mechanism 2 is installed on the pipeline 1 and the fixing mechanism 2 includes a fixing ring 1 3 and a fixing ring 2 15, the fixing ring 1 3 and the fixing ring 2 15 are both semi-annular structures and the ends of the fixing ring 1 3 and the fixing ring 2 15 are both provided with fixing plates 7, the surface of the fixing plate 7 is symmetrically provided with fixing holes 8, the two fixing plates 7 are fixed by bolts passing through the fixing holes 8, the middle part of the surface of the fixing ring 2 15 is provided with a mounting hole, the side wall of the flow switch 11 is embedded in the mounting hole and the surface of the flow switch 11 is fixed with a mounting plate 12, the mounting plate 12 is fixedly connected to the fixing ring 2 15, the fixing mechanism 2 is installed on the pipeline 1, and the flow switch 11 is installed on the fixing mechanism 2.

[0022] As a further improvement, a clamping groove 4 is provided on the opposite surfaces of the fixing ring 1 3 and the fixing ring 2 15, and a groove 5 is provided on the surface of the clamping groove 4, and a reinforcement airbag strip 6 is embedded and connected in the groove 5. The surface of the reinforcement airbag strip 6 is connected to the pipeline 1 in a close contact manner, and a plurality of anti-skid convex points are formed on the contact surface of the reinforcement airbag strip 6 and the pipeline 1. After the fixing ring 1 3 and the fixing ring 2 15 are connected to the pipeline 1, the reinforcement airbag strip 6 is in close contact with the surface of the pipeline 1, and the anti-skid convex points play an anti-skid effect.

[0023] As a further improvement, movable grooves are symmetrically arranged inside the fixing ring 15, and an inflatable bag 16 is installed inside the movable groove. A connecting tube 19 is arranged at one end of the inflatable bag 16, and the end of the connecting tube 19 is connected to the reinforced airbag strip 6. A push plate 18 is installed at the other end of the inflatable bag 16. After the inflatable bag 16 is squeezed by the push plate 18, the internal controller is introduced into the reinforced airbag strip 6 to inflate the reinforced airbag strip 6. After inflation, the stability of the connection with the pipeline 1 is improved.

[0024] As a further improvement, the surface of the second fixing ring 15 is symmetrically provided with screw holes 17, and the ends of the screw holes 17 are connected to the movable grooves. Connecting plates 14 are respectively provided on both sides of the mounting plate 12, and connecting holes 9 are provided on the surfaces of the connecting plates 14. Fixing bolts 10 are embedded in the connecting holes 9, and the ends of the fixing bolts 10 pass through the connecting holes 9 and are threadedly connected to the screw holes 17. A push plate 13 is installed on the surface of the fixing bolts 10. After the end of the screw is connected to the screw hole 17, the screw is rotated to push the push plate 18, and the push plate 18 pushes the inflatable bag 16 to inflate the reinforcement airbag strip 6.

[0025] Working principle: a detection hole is opened on the surface of the pipeline 1, and the fixing ring 1 3 and the fixing ring 2 15 are connected to the pipeline 1. The installation hole corresponds to the detection hole, and then a bolt is used to pass through the fixing hole 8 for fixing. After tightening, the reinforcement airbag strip 6 fits with the surface of the pipeline 1, which has a certain anti-slip effect. The detection end of the flow switch 11 is inserted into the installation hole and placed inside the pipeline 1 through the detection hole. The fixing bolt 10 on the connecting plate 14 is connected to the screw hole 17 on the surface of the fixing ring 2 15, and it is continuously tightened. During the tightening process, the airbag 16 is pushed by the push plate 18. After the airbag 16 is pressurized, the internal air is introduced into the reinforcement airbag strip 6. The reinforcement airbag strip 6 expands after being inflated, which improves the fit with the pipeline 1 and further improves the installation stability.

[0026] The utility model includes 1, pipeline; 2, fixing mechanism; 3, fixing ring 1; 4, clamping groove; 5, groove; 6, reinforcement airbag strip; 7, fixing plate; 8, fixing hole; 9, connecting hole; 10, fixing bolt; 11, flow switch; 12, mounting plate; 13, push plate; 14, connecting plate; 15, fixing ring 2; 16, inflatable bag; 17, screw hole; 18, push plate; 19, connecting pipe. All the components are universal standard parts or components known to those skilled in the art. The structures and principles thereof can be known to those skilled in the art through technical manuals or conventional experimental methods. The utility model solves the problem that when the existing thermal conductivity flow switch 11 is installed on a vertically arranged pipeline 1, as the use time increases, As well as the medium in the pipe section continuously impacting the probe and part of the fixed column, it is easy to cause the installation structure of the thermal conductivity flow switch 11 on the pipe section to be unstable, resulting in the problem of sliding hazards. The utility model combines the above-mentioned components with each other. The utility model fixes the flow switch 11 on the pipeline 1 through a fixing mechanism 2. After the fixing mechanism 2 is first installed on the pipeline 1, the flow switch 11 is inserted into the pipeline 1 through the mounting hole opened on the surface of the fixing mechanism 2. The mounting plate 12 is fixed to the fixing ring 15 by the fixing bolts 10. During the tightening process, the push plate 18 is pushed and the inflatable bag 16 is squeezed. The inflatable bag 16 inflates the reinforcement airbag strip 6 and improves the fit with the surface of the pipeline 1, thereby further improving the installation stability.

[0027] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A thermal conductivity flow switch, comprising a pipeline (1), a fixing mechanism (2) and a flow switch (11), characterized in that: The fixing mechanism (2) is installed on the pipeline (1) and comprises a fixing ring 1 (3) and a fixing ring 2 (15). The fixing ring 1 (3) and the fixing ring 2 (15) are both semi-annular structures and fixing plates (7) are provided at the ends of the fixing ring 1 (3) and the fixing ring 2 (15). The fixing plates (7) are symmetrically provided with fixing holes (8) on the surface of the fixing plates (7). A mounting hole is provided in the middle of the surface of the fixing ring 2 (15). The side wall of the flow switch (11) is embedded in the mounting hole and a mounting plate (12) is fixed to the surface of the flow switch (11). The mounting plate (12) is fixedly connected to the fixing ring 2 (15).

2. A thermal conductivity flow switch according to claim 1, characterized in that: A clamping groove (4) is arranged on the opposite surfaces of the fixing ring 1 (3) and the fixing ring 2 (15), a groove (5) is opened on the surface of the clamping groove (4), and a reinforcement airbag strip (6) is embedded and connected in the groove (5).

3. A thermal conductivity flow switch according to claim 2, characterized in that: The surface of the reinforcing airbag strip (6) is fitted and connected to the pipeline (1), and a plurality of anti-slip convex points are formed on the fitting surfaces of the reinforcing airbag strip (6) and the pipeline (1).

4. A thermal conductivity flow switch according to claim 1, characterized in that: The second fixing ring (15) is symmetrically provided with movable grooves inside, and an inflatable bag (16) is installed inside the movable groove. A connecting tube (19) is provided at one end of the inflatable bag (16), and the end of the connecting tube (19) is connected to the reinforcing airbag strip (6). A push plate (18) is installed at the other end of the inflatable bag (16).

5. A thermal conductivity flow switch according to claim 1, characterized in that: The surface of the second fixing ring (15) is symmetrically provided with screw holes (17), and the ends of the screw holes (17) are communicated with the movable grooves.

6. A thermal conductivity flow switch according to claim 1, characterized in that: Connecting plates (14) are respectively arranged on both sides of the mounting plate (12), and connecting holes (9) are respectively provided on the surfaces of the connecting plates (14). Fixing bolts (10) are embedded in the connecting holes (9), and the ends of the fixing bolts (10) pass through the connecting holes (9) and are threadedly connected to the screw holes (17), and a push plate (13) is installed on the surface of the fixing bolts (10).

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