Temperature compensation device of pressure transmitter

Abstract

The utility model discloses a pressure transmitter temperature compensation device, relates to the pressure transmitter technology field, and comprises a pressure transmitter main body, a sleeve pipe, a connecting pipe, an adjusting pipe and a heat exchange pipe, the pressure transmitter main body is internally provided with the sleeve pipe, the sleeve pipe is sleeved outside the connecting pipe, the detection end of the pressure transmitter is arranged inside the connecting pipe, and the adjusting pipe is arranged inside the pressure transmitter main body. When the temperature sensor detects that the temperature in the connecting pipe is too high, the micro pump is started, cooling water in the sleeve is conveyed into the heat exchange pipe, the heat exchange pipe dissipates heat through the fins, the temperature of the cooling water in the heat exchange pipe can be reduced, and the cooling effect of the heat exchange pipe is improved. The cooling water enters the sleeve through the other end of the heat exchange pipe, so that the cooling water can cool the interior of the pressure transmitter main body, and the influence of the temperature of a circulating medium in a pipeline can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, in particular to a temperature compensation device for a pressure transmitter. Background Art

[0002] The pressure transmitter will be affected by temperature when working. In order to reduce the impact of temperature on the pressure transmitter, a temperature compensation device is usually set to adjust the temperature of the pressure transmitter. After searching, the Chinese patent announcement number CN109556784A discloses a device for automatic temperature compensation of the pressure transmitter. Although the device uses the fluid inside the pipeline to form a thermal flow environment and tries to keep the pressure transmitter at a normal working temperature, it can effectively reduce its working environment in hot areas. However, the device has limitations when performing temperature reduction compensation. The device is affected by the temperature of the medium inside the pipeline when cooling. When the temperature of the medium inside the pipeline is high, it will cause the temperature of the pressure transmitter to rise slightly, and thus cannot achieve a good cooling effect. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a temperature compensation device for a pressure transmitter, which solves the problem that the existing device proposed in the background technology is affected by the temperature of the circulating medium inside the pipeline when cooling down, and when the temperature of the medium inside the pipeline is too high, it will cause the temperature of the pressure transmitter to rise slightly.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a pressure transmitter temperature compensation device, including a pressure transmitter body, a sleeve, a connecting pipe, an adjusting pipe and a heat exchange pipe, a sleeve is arranged inside the pressure transmitter body, the sleeve is sleeved on the outside of the connecting pipe, the detection end of the pressure transmitter is located inside the connecting pipe, one end of the sleeve is connected with a micro water pump, the other end of the micro water pump is connected with one end of the heat exchange pipe, the other end of the heat exchange pipe is connected with the inside of the sleeve, fins are welded on the outside of the heat exchange pipe, a fan is arranged on one side of the fin, the fan is embedded in the shell, holes and grooves are opened on both sides of the shell for air circulation, a temperature sensor is arranged at the other end of the sleeve, the detection end of the temperature sensor is located inside the sleeve, a controller is embedded in the micro water pump for receiving the temperature sensor signal to execute the micro water pump switch.

[0005] Preferably, there is a gap between the inner wall of the sleeve and the outer wall of the connecting tube, and cooling water is filled between the inner wall of the sleeve and the outer wall of the connecting tube. A guide groove is welded on the outer wall of the connecting tube, and the guide groove has a spiral structure. The guide groove is conducive to lengthening the circulation distance of the cooling water between the sleeve and the connecting tube, which is conducive to fully cooling the sleeve and the pressure transmitter body.

[0006] Preferably, the heat exchange tube and the fins are both made of copper-aluminum composite material, the heat exchange tube has a multi-bend structure, and the fins are arranged in a straight line with equal spacing. The heat exchange tube with a multi-bend structure is conducive to the heat exchange tube to fully exchange heat with the fins.

[0007] Preferably, both ends of the connecting tube are connected to the regulating tube via a connecting port, the connecting port is welded to both ends of the regulating tube, the surfaces of both ends of the regulating tube are corrugated, and the regulating tube can adaptively adjust and expand and contract with the temperature.

[0008] Preferably, the connecting ports at both ends of the adjusting tube are connected to each other through a threaded rod, the outer wall of the threaded rod is slidably connected to the connecting port, and the ends of the threaded rod are threadedly connected to nuts. By adjusting the position of the nuts at both ends of the threaded rod, it is beneficial to limit the maximum telescopic length of the adjusting tube.

[0009] The utility model provides a temperature compensation device for a pressure transmitter, which has the following beneficial effects:

[0010] (1) A pressure transmitter temperature compensation device, when the device is in use, the circulating medium will circulate inside the connecting pipe, and the connecting pipe will be cooled by the circulating medium, thereby cooling the internal temperature of the pressure transmitter body. When the temperature sensor detects that the temperature inside the connecting pipe is too high, the micro pump will start, and then the cooling water inside the sleeve will be transported to the inside of the heat exchange tube. The heat exchange tube dissipates heat through the fins, so that the temperature of the cooling water inside the heat exchange tube can be reduced, and the heat dissipation effect of the fins is improved by the fan. The cooled cooling water enters the sleeve through the other end of the heat exchange tube, so that the cooling water can cool the inside of the pressure transmitter body, which is beneficial to reduce the influence of the circulating medium temperature inside the pipeline.

[0011] (2) A pressure transmitter temperature compensation device, wherein when the regulating tubes at both ends of the device are connected to the pipeline, when the temperature of the circulating medium changes, the regulating tube will expand and contract through the external corrugated structure under the action of thermal expansion and contraction, thereby enabling the regulating tube to adaptively adjust and expand with the temperature, thereby avoiding leakage at the connection due to pipeline contraction.

[0012] This solves the problem that the existing device is affected by the temperature of the circulating medium inside the pipeline when cooling, and when the temperature of the medium inside the pipeline is high, it will cause the temperature of the pressure transmitter to rise slightly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the fin structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the guide trough structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the front view structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the regulating tube of the utility model.

[0018] In the figure, 1. Pressure transmitter body; 2. Casing; 3. Connecting pipe; 4. Adjusting pipe; 5. Micro water pump; 6. Heat exchange tube; 7. Fin; 8. Fan; 9. Housing; 10. Temperature sensor; 11. Connecting port; 12. Nut; 13. Threaded rod; 14. Guide groove. DETAILED DESCRIPTION

[0019] 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.

[0020] Example 1: See Figure 1-5

[0021] A pressure transmitter temperature compensation device comprises a pressure transmitter body 1, a sleeve 2, a connecting pipe 3, an adjusting pipe 4 and a heat exchange pipe 6. The pressure transmitter body 1 is provided with a sleeve 2, which is sleeved on the outside of the connecting pipe 3. The pressure transmitter detection end is located inside the connecting pipe 3. One end of the sleeve 2 is connected to a micro water pump 5, and the other end of the micro water pump 5 is connected to one end of the heat exchange pipe 6. The other end of the heat exchange pipe 6 is connected to the inside of the sleeve 2. A fin 7 is welded on the outside of the heat exchange pipe 6. A fan 8 is provided on one side of the fin 7. The fan 8 is embedded in an outer shell 9. Both sides of the outer shell 9 are provided with holes and grooves for air circulation. A temperature sensor 10 is provided at the other end of the sleeve 2. The detection end of the temperature sensor 10 is located inside the sleeve 2. A controller is embedded in the micro water pump for receiving a temperature sensor signal to execute a micro water pump switch. The inner wall of the sleeve 2 is connected to the outer wall of the connecting pipe 3. There is a gap between the walls, and cooling water is filled between the inner wall of the sleeve 2 and the outer wall of the connecting pipe 3. A guide groove 14 is welded on the outer wall of the connecting pipe 3. The guide groove 14 has a spiral structure. The heat exchange tube 6 and the fin 7 are both made of copper-aluminum composite material. The heat exchange tube 6 has a multi-bend structure, and the fins 7 are arranged in a straight line with equal spacing. When the temperature sensor 10 detects that the internal temperature of the connecting tube 3 is too high, the micro pump will start, and then the cooling water inside the sleeve 2 is transported to the inside of the heat exchange tube 6. The heat exchange tube 6 dissipates heat through the fin 7, so that the temperature of the cooling water inside the heat exchange tube 6 can be reduced, and then the heat dissipation effect of the fin 7 is improved by the fan 8. The cooled cooling water enters the sleeve 2 through the other end of the heat exchange tube 6, so that the cooling water can cool the inside of the pressure transmitter body 1, which is beneficial to reduce the influence of the temperature of the circulating medium inside the pipeline.

[0022] Embodiment 2:

[0023] The two ends of the connecting pipe 3 are connected to the regulating pipe 4 through the connecting port 11, and the connecting port 11 is welded to the two ends of the regulating pipe 4. The surfaces of the two ends of the regulating pipe 4 are corrugated. The connecting ports 11 at the two ends of the regulating pipe 4 are connected to each other through a threaded rod 13. The outer wall of the threaded rod 13 is slidably connected to the connecting port 11, and the ends of the threaded rod 13 are threadedly connected to the nuts 12. When the regulating pipes 4 at both ends of the device are connected to the pipeline, when the temperature of the circulating medium changes, the regulating pipe 4 will expand and contract through the external corrugated structure under the action of thermal expansion and contraction, so that the regulating pipe 4 can be adaptively adjusted and expanded with the temperature, avoiding leakage at the connection due to pipeline contraction, and adjusting the position of the nuts 12 at both ends of the threaded rod 13 is conducive to limiting the maximum expansion and contraction length of the regulating pipe 4.

[0024] Working principle: When the device is in use, the circulating medium will circulate inside the connecting tube 3, and the connecting tube 3 will be cooled by the circulating medium, thereby cooling the internal temperature of the pressure transmitter body 1. When the temperature sensor 10 detects that the internal temperature of the connecting tube 3 is too high, the micro pump will start, and then the cooling water inside the sleeve 2 will be transported to the inside of the heat exchange tube 6. The heat exchange tube 6 dissipates heat through the fins 7, so that the temperature of the cooling water inside the heat exchange tube 6 can be reduced, and the heat dissipation effect of the fins 7 is improved by the fan 8. The cooled cooling water enters the sleeve 2 through the other end of the heat exchange tube 6, so that the cooling water can cool the inside of the pressure transmitter body 1, which is beneficial to reduce the influence of the circulating medium temperature inside the pipeline.

[0025] 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 defined 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.

[0026] 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 temperature compensation device for a pressure transmitter, characterized in that: The invention comprises a pressure transmitter body (1), a sleeve (2), a connecting pipe (3), a regulating pipe (4) and a heat exchange pipe (6). The pressure transmitter body (1) is provided with a sleeve (2), the sleeve (2) is sleeved on the outside of the connecting pipe (3), the detection end of the pressure transmitter is located inside the connecting pipe (3), one end of the sleeve (2) is connected to a micro water pump (5), the other end of the micro water pump (5) is connected to one end of the heat exchange pipe (6), the other end of the heat exchange pipe (6) is connected to the inside of the sleeve (2), a fin (7) is welded to the outside of the heat exchange pipe (6), a fan (8) is provided on one side of the fin (7), the fan (8) is embedded in the inside of an outer shell (9), both sides of the outer shell (9) are provided with holes and grooves for air circulation, the other end of the sleeve (2) is provided with a temperature sensor (10), and the detection end of the temperature sensor (10) is located inside the sleeve (2).

2. A pressure transmitter temperature compensation device according to claim 1, characterized in that: There is a gap between the inner wall of the sleeve (2) and the outer wall of the connecting pipe (3), and cooling water is filled between the inner wall of the sleeve (2) and the outer wall of the connecting pipe (3). A guide groove (14) is welded to the outer wall of the connecting pipe (3), and the guide groove (14) is a spiral structure.

3. A temperature compensation device for a pressure transmitter according to claim 1, characterized in that: The heat exchange tube (6) and the fins (7) are both made of a copper-aluminum composite material; the heat exchange tube (6) has a multi-bend structure, and the fins (7) are arranged in a straight line with equal spacing.

4. A pressure transmitter temperature compensation device according to claim 1, characterized in that: The two ends of the connecting pipe (3) are connected to the regulating pipe (4) via a connecting port (11); the connecting port (11) is welded to the two ends of the regulating pipe (4); and the surfaces of the two ends of the regulating pipe (4) are corrugated.

5. The temperature compensation device for a pressure transmitter according to claim 1, characterized in that: The connection ports (11) at both ends of the regulating tube (4) are connected to each other via a threaded rod (13); the outer wall of the threaded rod (13) is slidably connected to the connection port (11); and the ends of the threaded rod (13) are threadedly connected to the nuts (12).

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