Flange remote transmission pressure transmitter with good wear resistance

Abstract

The utility model relates to the technical field of flange remote transmission pressure transmitters, and provides a flange remote transmission pressure transmitter with good wear resistance, which comprises a mounting flange, a diaphragm assembly arranged on one side of the mounting flange, the diaphragm assembly comprises a base, the base is fixedly connected to the central position of the mounting flange, one side of the base is fixedly connected with a connecting pipe, and the other side of the base is fixedly connected with a flange. The other side of the base is fixedly connected with an isolation diaphragm, the inner side of the base is provided with a through communicating groove, the inner side of the connecting pipe is fixedly connected with a capillary tube, the capillary tube is filled with a liquid medium, one end of the capillary tube is communicated with the communicating groove, the other end of the capillary tube is connected with a pressure sensor assembly, and the outer side of the connecting pipe is provided with a heating piece. According to the utility model, the diamond wear-resistant coating is coated on the base layer, so that the isolation diaphragm can be better protected from being worn by granular media, the wear resistance of the isolation diaphragm is improved, the service life of the flange remote transmission pressure transmitter is prolonged, and the working stability and the detection accuracy of the flange remote transmission pressure transmitter are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flange remote pressure transmitters, and in particular to a flange remote pressure transmitter with good wear resistance. Background Art

[0002] Pressure transmitter is a device that converts pressure into pneumatic or electric signals for control and remote transmission. It can convert physical pressure parameters such as gas and liquid sensed by the pressure measuring element sensor into standard electrical signals to supply secondary instruments such as indicator alarms, recorders, and regulators for measurement, indication, and process regulation. Pressure transmitter is the most commonly used sensor in industrial practice. It is widely used in various industrial automatic control environments, involving many industries such as water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical, oil wells, electricity, ships, machine tools, pipelines, etc.

[0003] After searching, the Chinese patent publication number CN208704955U discloses "a remote transmission component with a double isolation diaphragm for a pressure transmitter and a remote pressure transmitter including the remote transmission component and a pressure transmitter connected to the remote transmission component. The remote transmission component includes a base with three through holes and isolation diaphragms respectively arranged on the two end surfaces of the base, and the remote transmission component also includes a connecting rod, a flange and a capillary. The center hole at one end of the connecting rod is aligned with and fixed to the outer peripheral hole of the base, and the other end of the connecting rod is inserted into the center hole of the sealing surface end of the flange and fixed to the flange. One end of the capillary is fixed to the center hole position of the other side of the flange opposite to the sealing surface, and the other end of the capillary is fixedly connected to the pressure transmitter, and the inner hole of the capillary is connected to the center hole of the flange. A sealed pressure-conducting cavity is formed between the base, the connecting rod, the flange, the capillary and the pressure transmitter."

[0004] However, in the process of implementing the relevant technology, the applicant found that the above patent has some technical defects; first, in actual application, since the measured medium contains a large amount of abrasive granular media, the isolation diaphragm is broken due to wear, which shortens the service life of the flange remote pressure transmitter; second, when used in a low temperature environment, the fluidity of the measured medium is reduced, which affects the accuracy of the measurement. Similarly, when used in a high temperature environment, the pressure of the measured medium itself becomes larger, which also affects the accuracy of the measurement. In view of this, the utility model proposes a flange remote pressure transmitter with good wear resistance. Utility Model Content

[0005] The utility model provides a flange remote pressure transmitter with good wear resistance, which solves the problem that the isolation diaphragm in the prior art has poor wear resistance and is easy to break.

[0006] The technical solution of the utility model is as follows: a flange remote pressure transmitter with good wear resistance, comprising a mounting flange, a diaphragm assembly is arranged on one side of the mounting flange, the diaphragm assembly comprises a base, the base is fixedly connected to the center position of the mounting flange, a connecting pipe is fixedly connected to one side of the base, an isolation diaphragm is fixedly connected to the other side of the base, a through connecting groove is opened on the inner side of the base, a capillary is fixedly connected to the inner side of the connecting pipe, the interior of the capillary is filled with liquid medium, one end of the capillary is connected to the connecting groove, the other end of the capillary is connected to a pressure sensor assembly for measuring the pressure of the liquid medium, and a heating element for heating the liquid medium is arranged on the outer side of the connecting pipe.

[0007] Preferably, the isolation diaphragm comprises a base layer, and the outer side of the base layer is coated with a diamond wear-resistant coating.

[0008] Preferably, the heating element includes a branch tube 1, which is fixedly connected to the outside of the connecting tube, one end of the branch tube 1 is connected to the inside of the capillary, the other end of the branch tube 1 is fixedly connected to a mounting sleeve, the inner side of the mounting sleeve is fixedly connected to a heating wire, one end of the inner side of the branch tube 1 is fixedly connected to a heat conductive block, and one end of the heating wire is in conflict with the heat conductive block.

[0009] Preferably, a battery is fixedly connected to the inner side of the mounting sleeve, a power output end of the battery is electrically connected to the heating wire, and a power input end of the battery is externally connected to a charging connector.

[0010] Preferably, the diaphragm assembly also includes a cooling element, which includes a branch pipe 2, which is fixedly connected to the outside of the connecting pipe, one end of which is connected to the inside of the capillary tube, an isolation block is fixedly connected to the inside of the branch pipe 2, a heat exchange tube passing through the isolation block is fixedly connected to the isolation block, and the other end of the inner side of the branch pipe 2 is filled with coolant.

[0011] Preferably, the heat exchange tube is of a U-shaped structure, the arc section of the heat exchange tube is in contact with the liquid medium, and the tube mouth section of the heat exchange tube is in contact with the coolant.

[0012] Preferably, the end of the branch pipe 2 is fixedly connected with a liquid inlet pipe communicating with the interior of the branch pipe 2, and the pipe mouth of the liquid inlet pipe is fixedly connected with a sealing plug.

[0013] The working principle and beneficial effects of the utility model are:

[0014] 1. By coating the diamond wear-resistant coating on the base layer, the isolation diaphragm can be better protected from the wear of the granular medium, the wear resistance of the isolation diaphragm can be improved, the service life of the flange remote pressure transmitter can be extended, and its working stability and detection accuracy can be improved;

[0015] 2. When the external working environment temperature is low, the liquid medium is heated by the heating element, so that the temperature of the liquid medium is raised to the normal temperature, so that the liquid medium can flow normally, thereby avoiding the problem of the liquid medium being frozen, resulting in reduced fluidity and affecting the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a structural schematic diagram of a flange remote pressure transmitter with good wear resistance of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the diaphragm assembly of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the isolation diaphragm of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the heating element of the utility model;

[0021] Figure 5 It is a schematic structural diagram of the cooling element of the utility model.

[0022] In the figure: 1. mounting flange; 2. diaphragm assembly; 21. base; 22. isolation diaphragm; 221. diamond wear-resistant coating; 222. base layer; 23. connecting groove; 24. capillary; 25. connecting pipe; 26. heating element; 261. branch pipe 1; 262. mounting sleeve; 263. heat conductive block; 264. heating wire; 265. battery; 27. liquid medium; 28. cooling element; 281. branch pipe 2; 282. isolation block; 283. heat exchange tube; 284. coolant; 285. liquid inlet pipe; 3. pressure sensor assembly. DETAILED DESCRIPTION

[0023] The following will be combined with 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 of 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.

[0024] like Figure 1~Figure 5As shown, this embodiment proposes a flange remote pressure transmitter with good wear resistance, including a mounting flange 1, a diaphragm assembly 2 is arranged on one side of the mounting flange 1, the diaphragm assembly 2 includes a base 21, the base 21 is fixedly connected to the center position of the mounting flange 1, a connecting pipe 25 is fixedly connected to one side of the base 21, and an isolation diaphragm 22 is fixedly connected to the other side of the base 21, the isolation diaphragm 22 includes a base layer 222, and the outer side of the base layer 222 is coated with a diamond wear-resistant coating 221; by coating the diamond wear-resistant coating 221 on the base layer 222, the isolation diaphragm 22 can be better protected from the wear of the granular medium, the wear resistance of the isolation diaphragm 22 is improved, the service life of the flange remote pressure transmitter is extended, and its working stability and detection accuracy are improved.

[0025] A through-going connecting groove 23 is provided on the inner side of the base 21, a capillary 24 is fixedly connected to the inner side of the connecting tube 25, a liquid medium 27 is filled inside the capillary 24, one end of the capillary 24 is connected to the connecting groove 23, the other end of the capillary 24 is connected to a pressure sensor assembly 7 for measuring the pressure of the liquid medium 27, and a heating element 26 for heating the liquid medium 27 is provided on the outer side of the connecting tube 25. When the external working environment temperature is low, the liquid medium 27 is heated by the heating element 26, so that the temperature of the liquid medium 27 is raised to a normal temperature, so that the liquid medium 27 can flow normally, thereby avoiding the problem that the liquid medium 27 is frozen, resulting in reduced fluidity and affecting the measurement accuracy.

[0026] Furthermore, the heating element 26 includes a branch pipe 261, which is fixedly connected to the outside of the connecting pipe 25, one end of the branch pipe 261 is connected to the inside of the capillary 24, the other end of the branch pipe 261 is fixedly connected to the mounting sleeve 262, the inner side of the mounting sleeve 262 is fixedly connected to the heating wire 264, one end of the inner side of the branch pipe 261 is fixedly connected to the heat conductive block 263, one end of the heating wire 264 is in contact with the heat conductive block 263, the inner side of the mounting sleeve 262 is fixedly connected to the battery 265, the power output end of the battery 265 is electrically connected to the heating wire 264, and the power input end of the battery 265 is externally connected to a charging connector. By energizing the heating wire 264 to make it heat up, and then transferring the heat to the capillary 24 through the heat conductive block 263, the liquid medium 27 absorbs heat and the temperature rises, thereby ensuring that the liquid medium 27 can flow normally, thereby avoiding the problem of the liquid medium 27 being frozen, resulting in reduced fluidity and affecting the measurement accuracy.

[0027] Furthermore, the diaphragm assembly 2 also includes a cooling member 28, which includes a branch pipe 281. The branch pipe 281 is fixedly connected to the outside of the connecting pipe 25, one end of the branch pipe 281 is connected to the inside of the capillary 24, the inner side of the branch pipe 281 is fixedly connected with an isolation block 282, the isolation block 282 is fixedly connected with a heat exchange tube 283 that passes through the isolation block 282, the other end of the inner side of the branch pipe 281 is filled with a coolant 284, the heat exchange tube 283 is a U-shaped structure, the arc section of the heat exchange tube 283 is in contact with the liquid medium 27, the pipe mouth section of the heat exchange tube 283 is in contact with the coolant 284, the end of the branch pipe 281 is fixedly connected with a liquid inlet pipe 285 that is connected to the inside of the branch pipe 281, and the pipe mouth of the liquid inlet pipe 285 is fixedly connected with a sealing plug.

[0028] When the external working environment temperature is high, the coolant 284 is introduced into the branch pipe 281 through the liquid inlet pipe 285, and then the coolant 284 enters the arc section of the heat exchange tube 283 through the pipe mouth of the heat exchange tube 283. Since the arc section of the heat exchange tube 283 is in contact with the liquid medium 27, the liquid medium 27 will exchange heat with the heat exchange tube 283, which makes the coolant 284 inside the heat exchange tube 283 absorb the heat of the liquid medium 27, thereby reducing the temperature of the liquid medium 27. This can avoid the problem of excessive pressure caused by the excessive temperature of the liquid medium 27 and affecting the measurement accuracy.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flange remote pressure transmitter with good wear resistance, comprising a mounting flange (1), characterized in that: A diaphragm assembly (2) is provided on one side of the mounting flange (1), and the diaphragm assembly (2) comprises a base (21), the base (21) is fixedly connected to the center position of the mounting flange (1), a connecting pipe (25) is fixedly connected to one side of the base (21), and an isolation diaphragm (22) is fixedly connected to the other side of the base (21), a through-going connecting groove (23) is provided on the inner side of the base (21), a capillary (24) is fixedly connected to the inner side of the connecting pipe (25), a liquid medium (27) is filled inside the capillary (24), one end of the capillary (24) is connected to the connecting groove (23), and the other end of the capillary (24) is connected to a pressure sensor assembly (7) for measuring the pressure of the liquid medium (27), and a heating element (26) for heating the liquid medium (27) is provided on the outer side of the connecting pipe (25).

2. A flange remote pressure transmitter with good wear resistance according to claim 1, characterized in that: The isolation diaphragm (22) comprises a base layer (222), and the outer side of the base layer (222) is coated with a diamond wear-resistant coating (221).

3. The flange remote pressure transmitter with good wear resistance according to claim 1 is characterized in that: The heating element (26) comprises a branch pipe (261), wherein the branch pipe (261) is fixedly connected to the outside of the connecting pipe (25), one end of the branch pipe (261) is connected to the inside of the capillary tube (24), the other end of the branch pipe (261) is fixedly connected to a mounting sleeve (262), the inner side of the mounting sleeve (262) is fixedly connected to a heating wire (264), one end of the inner side of the branch pipe (261) is fixedly connected to a heat conducting block (263), and one end of the heating wire (264) is in contact with the heat conducting block (263).

4. The flange remote pressure transmitter with good wear resistance according to claim 3 is characterized in that: A storage battery (265) is fixedly connected to the inner side of the installation sleeve (262); a power output end of the storage battery (265) is electrically connected to the heating wire (264); and a power input end of the storage battery (265) is externally connected to a charging connector.

5. The flange remote pressure transmitter with good wear resistance according to claim 1 is characterized in that: The diaphragm assembly (2) also includes a cooling element (28), the cooling element (28) including a second branch pipe (281), the second branch pipe (281) being fixedly connected to the outside of the connecting pipe (25), one end of the second branch pipe (281) being connected to the inside of the capillary tube (24), an isolation block (282) being fixedly connected to the inside of the second branch pipe (281), a heat exchange tube (283) penetrating the isolation block (282) being fixedly connected to the isolation block (282), and the other end of the inside of the second branch pipe (281) being filled with a cooling liquid (284).

6. A flange remote pressure transmitter with good wear resistance according to claim 5, characterized in that: The heat exchange tube (283) is of a U-shaped structure; the arc section of the heat exchange tube (283) is in contact with the liquid medium (27); and the tube mouth section of the heat exchange tube (283) is in contact with the cooling liquid (284).

7. A flange remote pressure transmitter with good wear resistance according to claim 6, characterized in that: The end of the second branch pipe (281) is fixedly connected to a liquid inlet pipe (285) which communicates with the interior of the second branch pipe (281), and the pipe mouth of the liquid inlet pipe (285) is fixedly connected to a sealing plug.

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