Integrated transmitter with heat dissipation structure

Abstract

The invention discloses an integrated transmitter with a heat dissipation structure, and relates to the technical field of transmitters, the integrated transmitter comprises a base, a temperature sensitive element, a heat dissipation connecting piece and a pressure sensitive element, the heat dissipation connecting piece comprises a center piece, the peripheral wall of the center piece is provided with at least three cooling fins at intervals along the height direction, the lower end of the center piece is connected with a mounting part, and the pressure sensitive element is connected with the mounting part. The connecting hole sequentially penetrates through the center piece and the mounting part from top to bottom, and the mounting part is fixedly connected with the base. Through the heat dissipation connecting piece, the temperature sensitive element, the pressure sensitive element, the heat dissipation connecting piece and the base are integrated, only one set of transmitter cables needs to be arranged, the construction difficulty is lowered, installation is convenient, a medium enters through the pressure guiding hole and makes contact with a probe of the pressure sensitive element, and the heat dissipation connecting piece absorbs the temperature of the medium; and heat dissipation is carried out through the cooling fins, so that the temperature is reduced to a bearable range of the pressure sensitive element, the pressure sensitive element is prevented from being damaged by a high-temperature medium, and the service life of the transmitter is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of transmitters, and particularly to an integrated transmitter with a heat dissipation structure. Background Art

[0002] Transmitters are developed from sensors. Any sensor that can output a standard signal is called a transmitter. Currently, in fields such as petroleum, chemical industry, power plants, urban water supply, and hydrographic exploration, when measuring temperature and pressure, especially when measuring the medium temperature, the medium temperature is often too high to damage the pressure-sensitive element; moreover, in the occasions of high-pressure (liquid level) and high-temperature measurement and precise control, customers need to separately purchase two transmitters for temperature and pressure for installation and measure the real-time pressure data and temperature data, which is troublesome to install, requires laying two groups of transmitter cables on site, has a high construction difficulty, and requires a very high maintenance cost; furthermore, for the transmitters on the market that can measure temperature and pressure simultaneously, due to structural limitations, the temperature measurement accuracy is too low, the pressure measurement range is too small, and the overall product volume is also very large, resulting in poor measurement effects.

[0003] In view of this, the present invention is specifically proposed to solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated transmitter with a heat dissipation structure to solve the technical problems in the prior art that the transmitter has a low temperature tolerance for the measured medium and the transmitter is not sufficiently integrated.

[0005] The purpose of the present invention is to provide an integrated transmitter with a heat dissipation structure, including: A base fixed on the container of the measured medium, and a through pressure guiding hole is opened along the height direction at the center of the base; A temperature-sensitive element disposed at the bottom of the base; A heat dissipation connecting member with a connecting hole opened at the center, the heat dissipation connecting member is installed on the base, and the connecting hole is communicated with the pressure guiding hole; Wherein, the heat dissipation connecting member includes a central member, at least three heat dissipation fins are spaced along the height direction on the outer peripheral wall of the central member, the lower end of the central member is connected with an installation part, the connecting hole sequentially penetrates through the central member and the installation part from top to bottom, and the installation part is fixedly connected with the base; A pressure-sensitive element disposed on the central member and communicated with the connecting hole.

[0006] Further, a first threaded hole communicated with the pressure guiding hole is opened on the base, the peripheral wall of the installation part has an external thread matching with the first threaded hole, and the installation part is screwed into the first threaded hole.

[0007] Furthermore, the upper end of the connecting hole in the center of the center piece is an internal threaded hole, and a threaded pressure connector is arranged in the internal threaded hole. The pressure connector has a cavity that matches the pressure sensitive element. The pressure sensitive element is located in the cavity, and the lower end of the pressure sensitive element passes through the cavity.

[0008] Furthermore, an inner side wall at the upper end of the cavity is provided with an internal thread, a locking ring is threaded on the internal thread, a clamping rod is provided at the bottom of the locking ring, and the clamping rod is detachably connected to the pressure sensitive element.

[0009] Furthermore, a signal amplifier is provided at the upper end of the locking ring, and the signal amplifier is electrically connected to the temperature sensitive element through an insulated high temperature resistant wire.

[0010] Furthermore, a connection groove is opened in the base, the insulated high temperature resistant wire is located in the connection groove, and the connection groove is filled with magnesium powder and thermal conductive silicone grease.

[0011] Furthermore, a bottom edge is provided at the bottom of the lowermost heat sink, and the bottom edge is sealed to the upper end of the base to form a sealed cavity, and the sealed cavity is sealed by glue filling.

[0012] Furthermore, two through holes are provided on the center piece along its height direction, one through hole is used for the insulated high temperature resistant wire to pass through, and the other through hole is used for filling glue into the sealed cavity.

[0013] Furthermore, two sealing rubber rings are sleeved on the lower end of the pressure sensitive element, and the two sealing rubber rings are respectively sealed and connected to the two ends of the connecting hole.

[0014] Furthermore, a common cooling cavity is opened inside the center piece and the plurality of heat sinks; The cooling chamber is respectively connected with a liquid inlet pipe and a liquid outlet pipe; A liquid storage tank is arranged above the heat sink, the liquid storage tank is connected to a circulation pump, and the liquid outlet of the circulation pump is connected to the liquid inlet pipe; A condenser is arranged on one side of the liquid storage tank, a liquid outlet end of the condenser is connected with the liquid storage tank, and an end of a liquid outlet pipe away from the heat sink is connected with a liquid inlet end of the condenser.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects: 1. Through the heat dissipation connector, the temperature sensitive element, pressure sensitive element, heat dissipation connector and base are integrated into one, which reduces the volume of the overall transmitter. In addition, the temperature sensitive element and the pressure sensitive element are integrated on the base. Only one set of transmitter cables is required, which reduces the construction difficulty and facilitates installation.

[0016] 2. Since the probe rod is in direct contact with the medium, the temperature sensitive element is as close to the medium as possible, avoiding heat loss during the medium temperature transfer process, thereby improving the measurement accuracy of the medium temperature.

[0017] 3. The medium enters through the pressure guiding hole, contacts the probe of the pressure sensitive element for pressure measurement. The heat dissipation connecting piece absorbs the temperature of the medium and dissipates heat through the heat sink to reduce the temperature of the medium, so that its temperature drops to within the tolerable range of the pressure sensitive element, thereby improving the pressure resistance of the pressure sensitive element, avoiding damage to the pressure sensitive element by high-temperature medium, and increasing the service life of the transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings, as part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings: Figure 1 It is a schematic structural diagram of an integrated transmitter with a heat dissipation structure provided by an embodiment of this application; Figure 2 is Figure 1 a partial structural sectional view of an integrated transmitter with a heat dissipation structure provided; Figure 3 It is a schematic structural diagram of the heat dissipation connecting piece of an integrated transmitter with a heat dissipation structure provided by an embodiment of this application; Figure 4 is Figure 3 a schematic structural diagram of another perspective.

[0019] Reference numerals: 1. Temperature sensitive element; 2. Insulated high-temperature resistant wire; 3. Base; 4. Sealing rubber ring; 5. Heat dissipation connecting piece; 6. Pressure connecting piece; 7. Pressure sensitive element; 8. Locking ring; 9. Signal amplifier; 10. Outer shell; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 13. Liquid storage tank; 14. Condenser; 15. Circulation pump; 51. Central part; 52. Heat sink; 53. Installation part; 54. Through hole; 55. Internal thread hole; 56. Bottom edge.

[0020] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The specific embodiments of the present invention will be further described in detail in conjunction with the drawings.

[0022] See Figures 1 to 4As shown in the figure, the embodiment of the present application provides an integrated transmitter with a heat dissipation structure, including: a base 3, a temperature sensitive element 1, a heat dissipation connection member 5, and a pressure sensitive element 7. The base 3 is fixed on the container of the measured medium through the external thread at the lower end, and is sealed with the container of the measured medium through a gasket and an ED sealing ring. A through pressure guiding hole is provided in the center of the base 3 along its height direction. The temperature sensitive element 1 is arranged at the bottom of the base 3. A connection hole is provided in the center of the heat dissipation connection member 5. The heat dissipation connection member 5 is installed on the base 3, and the connection hole is communicated with the pressure guiding hole. Among them, the heat dissipation connection member 5 includes a central member 51. At least three heat dissipation fins 52 are arranged at intervals along the height direction of the outer peripheral wall of the central member 51. An installation portion 53 is connected to the lower end of the central member 51. The connection hole penetrates through the central member 51 and the installation portion 53 from top to bottom. The installation portion 53 is fixedly connected to the base 3 through a thread. The pressure sensitive element 7 is arranged on the central member 51 and is communicated with the connection hole.

[0023] It should be noted that a housing 10 is also welded to the uppermost heat dissipation fin 52 to seal the heat dissipation connection member 5 from the outside. The bottom of the base 3 has a probe rod. The probe rod is assembled to the bottom of the base 3 through a thread. After the temperature sensitive element 1 is installed in the probe rod, the probe rod is welded to the base 3 to reduce the overall processing difficulty. The temperature sensitive element 1 is installed in the probe rod. The medium enters the pressure sensitive element 7 through the pressure guiding hole at the bottom of the base 3. When the measured medium is above 85 °C and the pressure is greater than 10 MPa, the traditional structure cannot accurately measure the medium parameters with a single transmitter at the same time. The installation portion 53 is fixedly connected to the base 3 through a thread. According to the temperature of the medium, a heat dissipation connection member 5 with different numbers of heat dissipation fins 52 is selected, which greatly reduces the production preparation and assembly costs of the product.

[0024] In the above solution, through the provided heat dissipation connection member 5, the temperature sensitive element 1, the pressure sensitive element 7, the heat dissipation connection member 5, and the base 3 are integrated into one, reducing the volume of the overall transmitter. Moreover, both the temperature sensitive element 1 and the pressure sensitive element 7 are integrated on the base 3, and only one set of transmitter cables needs to be set, reducing the construction difficulty and facilitating installation. Since the probe rod is in direct contact with the medium, the temperature sensitive element 1 is closest to the medium to the greatest extent, avoiding heat loss during the transmission of the medium temperature, thereby improving the measurement accuracy of the medium temperature. The medium enters through the pressure guiding hole and contacts the probe of the pressure sensitive element 7 for pressure measurement. The heat dissipation connection member 5 absorbs the temperature of the medium and dissipates heat through the heat dissipation fins 52, reducing the temperature of the medium to a range that the pressure sensitive element 7 can withstand, thereby improving the pressure resistance of the pressure sensitive element 7 and avoiding damage to the pressure sensitive element 7 by high-temperature media, and improving the service life of the transmitter.

[0025] In some possible embodiments, a first threaded hole communicating with the pressure guiding hole is formed in the base 3, and the outer wall of the mounting portion 53 has an external thread matching with the first threaded hole. The mounting portion 53 is screwed into the first threaded hole, so as to facilitate the replacement of the heat dissipation connecting member 5.

[0026] In some possible embodiments, as shown in Figure 2 and Figure 3 shown, the upper end of the connecting hole at the center of the central member 51 is an internal threaded hole 55. A pressure connecting member 6 is arranged in the internal threaded hole 55 in a screwed manner. The pressure connecting member 6 has a cavity matching with the pressure sensitive element 7. The pressure sensitive element 7 is located in the cavity, and the lower end of the pressure sensitive element 7 penetrates out of the cavity.

[0027] In some possible embodiments, as shown in Figure 2 shown, the inner side wall of the upper end of the cavity is provided with an internal thread, and a locking ring 8 is screwed on the internal thread. A pressing rod is arranged at the bottom of the locking ring 8, and the pressing rod is detachably connected with the pressure sensitive element 7.

[0028] In the above solution, when sealing the pressure sensitive element 7, first place the pressure sensitive element 7 into the pressure connecting member 6, then install the locking ring 8 on the pressure connecting member 6, and rotate the locking ring 8 so that the pressing rod presses and seals the pressure sensitive element 7 in the pressure connecting member 6.

[0029] In some possible embodiments, as shown in Figure 2 shown, a signal amplifier 9 is arranged at the upper end of the locking ring 8. The signal amplifier 9 is electrically connected with the temperature sensitive element 1 through an insulating and high-temperature resistant wire 2. An insulating sleeve is arranged on the locking ring 8. The signal amplifier 9 is installed in the insulating sleeve, and epoxy resin is poured into the insulating sleeve. The poured epoxy resin completely submerges the signal amplifier 9 in the epoxy resin, isolating oxygen and moisture, thereby prolonging the service life of the transmitter. The output signal of the pressure sensitive element 7 is transmitted to the signal amplifier 9 through a silica gel wire, and after being processed by the signal amplifier 9, it is output through a waterproof and gas-conducting cable at the tail of the transmitter.

[0030] In the above solution, the temperature of the measured medium is transmitted to the temperature sensitive element 1 through the probe rod at the bottom of the base 3. The output signal of the temperature sensitive element 1 is transmitted to the signal amplifier 9 through the probe rod, and after being processed by the signal amplifier 9, it is output through a waterproof and gas-conducting cable at the tail of the transmitter.

[0031] In some possible embodiments, as shown in Figure 2 shown, a connection groove is formed in the base 3. The insulating and high-temperature resistant wire 2 is located in the connection groove, and magnesium powder and thermal conductive silicone grease are filled in the connection groove to ensure the effective transmission of the medium temperature.

[0032] In some possible embodiments, as shown in Figure 2 andFigure 4 As shown, a bottom edge 56 is provided at the bottom of the lowermost heat sink 52. The bottom edge 56 is hermetically connected to the upper end of the base 3 to form a sealed cavity. The sealed cavity is filled with glue for sealing. Filling the sealed cavity with glue for sealing prevents high-temperature medium from entering the housing 10, thereby reducing the measurement of the pressure of the medium.

[0033] In some possible implementation schemes, refer to Figures 2 to 4 As shown, two through holes 54 are provided along the height direction of the central member 51. One through hole 54 is for the insulating high-temperature-resistant wire 2 to pass through, and the other through hole 54 is for filling glue into the sealed cavity.

[0034] In some possible implementation schemes, refer to Figures 2 to 4 As shown, two sealing rubber rings 4 are sleeved at the lower end of the pressure-sensitive element 7. The two sealing rubber rings 4 are respectively hermetically connected to both ends of the connection hole to achieve high-pressure sealing of the medium.

[0035] In some possible implementation schemes, refer to Figure 2 As shown, an O-ring is provided on the outer circumferential wall of the pressure-sensitive element 7. The O-ring is used to seal the pressure-sensitive element 7 and the pressure connection member 6.

[0036] In some possible implementation schemes, if the temperature of the measured medium is lower than 85 °C, the heat dissipation connection member 5 may not be installed during the assembly stage of the product. The pressure connection member 6 can be directly assembled onto the base 3, and the housing 10 is directly welded to the outer edge of the base 3 to achieve sealing with the outside.

[0037] In some possible implementation schemes, refer to Figure 1 And Figure 2 As shown, the central member 51 and a plurality of heat sinks 52 are internally provided with the same cooling cavity. The cooling cavity is respectively communicated with a liquid inlet pipe 11 and a liquid outlet pipe 12. A liquid storage tank 13 is provided above the heat sink 52. The liquid storage tank 13 is fixedly arranged on the housing 10. The liquid storage tank 13 is filled with a coolant. The liquid storage tank 13 is communicated with a circulation pump 15. The liquid outlet of the circulation pump 15 is communicated with the liquid inlet pipe 11. A condenser 14 is provided on one side of the liquid storage tank 13. The liquid outlet end of the condenser 14 is communicated with the liquid storage tank 13. One end of the liquid outlet pipe 12 away from the heat sink 52 is communicated with the liquid inlet end of the condenser 14.

[0038] In the above scheme, when quickly dissipating heat from the heat sink 52, the coolant in the liquid storage tank 13 is output through the provided circulation pump 15, enters the cooling cavity through the liquid inlet pipe 11. After the coolant circulates in the cooling cavity, it enters the condenser 14 through the liquid outlet pipe 12 to cool down the coolant. The cooled coolant flows back into the liquid storage tank 13 for circulation.

[0039] This specific embodiment is only an interpretation of the invention and does not limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as they are within the protection scope of the invention, they are protected by the patent law.

Claims

1. Integrated transmitter with a heat dissipation structure, characterized in that Comprising: A base (3) which is fixed on the container of the medium to be measured, and a through pressure guiding hole is provided along the height direction at the center of the base (3); A temperature sensitive element (1) which is arranged at the bottom of the base (3); A heat dissipation connecting piece (5) with a connecting hole provided at the center thereof, the heat dissipation connecting piece (5) is installed on the base (3), and the connecting hole is communicated with the pressure guiding hole; Wherein, the heat dissipation connecting piece (5) includes a central piece (51), at least three heat dissipation fins (52) are arranged at intervals along the height direction on the outer peripheral wall of the central piece (51), the lower end of the central piece (51) is connected with a mounting part (53), the connecting hole sequentially penetrates through the central piece (51) and the mounting part (53) from top to bottom, and the mounting part (53) is fixedly connected with the base (3); A pressure sensitive element (7) which is arranged on the central piece (51) and is communicated with the connecting hole.

2. The integrated transmitter with a heat dissipation structure according to claim 1, characterized in that, A first threaded hole communicated with the pressure guiding hole is provided on the base (3), the peripheral wall of the mounting part (53) has an external thread matched with the first threaded hole, and the mounting part (53) is screwed in the first threaded hole.

3. The integrated transmitter with a heat dissipation structure according to claim 2, characterized in that, The upper end of the connecting hole at the center of the central piece (51) is an internal threaded hole (55), a pressure connecting piece (6) screwed is arranged in the internal threaded hole (55), a cavity matched with the pressure sensitive element (7) is arranged in the pressure connecting piece (6), the pressure sensitive element (7) is located in the cavity, and the lower end of the pressure sensitive element (7) penetrates out of the cavity.

4. The integrated transmitter with a heat dissipation structure according to claim 3, characterized in that, Internal threads are arranged on the inner side wall at the upper end of the cavity, a locking ring (8) is screwed on the internal threads, a pressing rod is arranged at the bottom of the locking ring (8), and the pressing rod is detachably connected with the pressure sensitive element (7).

5. The integrated transmitter with a heat dissipation structure according to claim 4, characterized in that, A signal amplifier (9) is arranged at the upper end of the locking ring (8), and the signal amplifier (9) is electrically connected with the temperature sensitive element (1) through an insulating high-temperature resistant wire (2).

6. The integrated transmitter with a heat dissipation structure according to claim 5, wherein, A connecting groove is provided in the base (3), the insulating high-temperature resistant wire (2) is located in the connecting groove, and magnesium powder and heat-conducting silicone grease are filled in the connecting groove.

7. The integrated transmitter with a heat dissipation structure according to claim 6, wherein, A bottom edge (56) is arranged at the bottom of the lowermost heat dissipation fin (52), and the bottom edge (56) is hermetically connected with the upper end of the base (3) to form a sealed cavity, and the sealed cavity is sealed with glue.

8. The integrated transmitter with a heat dissipation structure according to claim 6, characterized in that, Two through holes (54) are provided along the height direction on the central piece (51), one through hole (54) is for the insulating high-temperature resistant wire (2) to pass through, and the other through hole (54) is for filling glue into the sealed cavity.

9. The integrated transmitter with a heat dissipation structure according to claim 3, characterized in that, Two sealing rubber rings (4) are sleeved at the lower end of the pressure sensitive element (7), and the two sealing rubber rings (4) are respectively hermetically connected with both ends of the connecting hole.

10. The integrated transmitter with a heat dissipation structure according to claim 9, characterized in that, The central piece (51) and the plurality of heat dissipation fins (52) are internally provided with the same cooling cavity; The cooling cavity is respectively communicated with a liquid inlet pipe (11) and a liquid outlet pipe (12); Above the heat sink (52), a liquid storage tank (13) is provided. The liquid storage tank (13) is connected to a circulation pump (15), and the liquid outlet of the circulation pump (15) is connected to the liquid inlet pipe (11). On one side of the liquid storage tank (13), a condenser (14) is provided. The liquid outlet end of the condenser (14) is connected to the liquid storage tank (13), and one end of the liquid outlet pipe (12) away from the heat sink (52) is connected to the liquid inlet end of the condenser (14).

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