Pressure transmitter with cooling tube

Abstract

The utility model discloses a pressure transmitter with cooling pipe, including pressure transmitter body, be equipped with gas circuit interface on the pressure transmitter body, the gas circuit interface is preloaded with the cooling pipe that extends outward, the cooling pipe adopts metal material to make, and it can be with heat exchange form to the gas cooling of inside temperature drop.

Description

Technical Field

[0001] This utility model relates to the field of pressure transmitter technology, specifically to a pressure transmitter with a cooling pipe. Background Technology

[0002] In the application of pressure transmitters, it is often necessary to directly detect the pressure parameters of high-temperature and high-pressure media. In the existing technology, the gas circuit interface of pressure transmitters generally adopts a simple straight-through structure. This structure lacks effective thermal management capabilities and is difficult to cope with the transmission requirements of high-temperature media.

[0003] For example, in high-temperature gas-cooled reactor systems in the nuclear industry, continuous monitoring of the pressure of circulating helium is required. Helium reaches high temperatures during circulation, and directly introducing it into the pressure transmitter poses a serious threat to the precision sensor core inside. This can lead to irreversible physical damage such as sealant failure and fluid degradation, as well as significant measurement errors, such as zero-point drift and sensitivity drift. Consequently, the pressure monitoring data becomes distorted, ultimately affecting the reliability and accuracy of the entire detection system. Utility Model Content

[0004] In view of this, the present invention provides a pressure transmitter with a cooling pipe, which can reduce the temperature of the gas introduced into the transmitter by means of an external cooling device.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A pressure transmitter with a cooling pipe includes a pressure transmitter body, on which a gas passage interface is provided. The gas passage interface is pre-installed with an outwardly extending cooling pipe, which is made of metal material and can cool the internal gas through heat exchange.

[0007] With the above structure, the cooling pipe can be inserted into the low-temperature chamber of the cooling equipment, and the gas to be tested inside the cooling pipe can be rapidly cooled down by heat exchange.

[0008] Preferably, the cooling pipe includes a connecting pipe section and a cooling pipe section, wherein the cooling pipe section is used to integrate a cooling device;

[0009] The cooling pipe section is a straight pipe structure with a length of 300-350mm and an orifice diameter of 6-10mm. The orifice diameter of the connecting pipe section is smaller than that of the cooling pipe section. With the above structure, the cooling pipe section is a long, straight, and thin pipe with sufficient heat dissipation area, resulting in good cooling effect and high efficiency. The smaller orifice diameter of the connecting pipe section forms a throttling orifice, making the airflow to the transmitter more stable.

[0010] Preferably, the gas interface has a connection channel, and the connecting pipe section is welded and fixed within the connection channel; the diameter of the connection channel gradually decreases from the outside to the inside, and the inner end of the connecting pipe section has a tapered structure adapted to the connection channel. This structure facilitates installation and provides high structural strength.

[0011] Preferably, the outer end of the connecting channel is provided with a guide slope. This structure facilitates installation and improves assembly efficiency.

[0012] Preferably, the outer edge of the end of the cooling pipe that extends into the connecting channel is provided with an inlet bevel. This structure facilitates installation and improves assembly efficiency.

[0013] Preferably, the outer wall of the connecting pipe section is provided with an annular protrusion, and the outer end of the guide slope is connected to an annular groove; the annular protrusion is fixed in the annular groove. This structure ensures a tight seal and a stable connection.

[0014] Preferably, the pressure transmitter body is a differential pressure transmitter with two gas path interfaces, namely a high-pressure gas path interface and a low-pressure gas path interface, both connected to cooling pipes. This structure allows for simultaneous cooling of the introduced gas on both the high and low pressure sides, comprehensively protecting the differential pressure sensor core.

[0015] Preferably, the cooling pipe is made of stainless steel. This structure provides good thermal conductivity and high cooling efficiency.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By pre-installing a cooling pipe on the gas line interface of the transmitter, the cooling pipe can be extended into the low temperature chamber of the cooling equipment, and the gas to be measured inside the cooling pipe can be rapidly cooled down by heat exchange.

[0018] 2. The pre-installed metal cooling pipe structure boasts high strength and constitutes a standardized external platform in itself. Besides integrating cooling equipment, it can also be easily adapted to other functional accessories, providing great flexibility for expanding the functionality of the pressure measurement system and avoiding repetitive structural designs for single functions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 for Figure 2 A magnified view of a section at point B in the middle;

[0022] Figure 4 This is a diagram showing the usage state of this utility model. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0024] like Figure 1 As shown, a pressure transmitter with a cooling pipe includes a pressure transmitter body A, on which a gas inlet 1 is provided. A cooling pipe 2 extending outwards is pre-installed on the gas inlet 1. The cooling pipe 2 is made of a metal material; in this embodiment, it is made of stainless steel. The cooling pipe 2 can cool the internal gas through heat exchange. Stainless steel has excellent thermal conductivity, which can efficiently and quickly transfer the heat of the high-temperature gas flowing through the cooling pipe 2 to the outer wall, greatly improving the cooling efficiency.

[0025] like Figure 2 and Figure 3 As shown, the cooling pipe 2 includes a connecting pipe section 21 and a cooling pipe section 22. The cooling pipe section 22 is a long straight pipe structure with a length of 300-350mm and an orifice diameter of 6-10mm, used for integrated cooling equipment. The cooling pipe section 22 is a long, straight, thin pipe with sufficient heat dissipation area, resulting in good cooling effect and high efficiency. The orifice diameter of the connecting pipe section 21 is smaller than that of the cooling pipe section 22. The connection between the connecting pipe section 21 and the cooling pipe section 22 forms a throttling orifice, which allows for more stable airflow to the transmitter.

[0026] like Figure 3 As shown, the gas interface 1 has a connecting channel 1a, and the connecting pipe section 21 is welded and fixed inside the connecting channel 1a. The diameter of the connecting channel 1a gradually decreases from the outside to the inside, and the outer end is provided with a guide slope 1b. The inner end of the connecting pipe section 21 has a tapered structure adapted to the connecting channel 1a, and the outer edge of the end of the cooling pipe 2 that extends into the connecting channel 1a is provided with an inlet slope 2a. The outer wall of the connecting pipe section 21 is provided with an annular protrusion 2b, and the outer end of the guide slope 1b is connected to an annular groove 1c; the annular protrusion 2b is fixed inside the annular groove 1c.

[0027] like Figure 3As shown, in this embodiment, the cooling pipe 2 and the transmitter adopt a laser-welded structure to ensure excellent sealing performance under high temperature, high pressure, and helium-permeable conditions. Before leaving the factory, the product undergoes multiple helium pressure permeation leak tests exceeding 7MPa to rigorously verify its sealing reliability. In terms of structural design, the tapered structure of the connecting pipe section 21 cooperates with the tapered wall of the connecting channel 1a, and the guiding slope 1b and the inlet slope 2a connect to form a guiding and centering structure, allowing the cooling pipe 2 to be smoothly introduced and positioned within the connecting channel 1a along the axial direction. Once the cooling pipe 2 is installed, its annular protrusion 2b fits perfectly into the annular groove 1c at the outer end of the connecting channel 1a. The annular protrusion 2b is circumferentially fixed within the annular groove 1c by welding, thus achieving a secure connection between the cooling pipe 2 and the gas interface 1. This structure is not only easy and efficient to install, but also ensures long-term reliable sealing and mechanical stability at the connection point under high pressure, high temperature, or vibration conditions.

[0028] like Figure 2 As shown, the pressure transmitter body A is a differential pressure transmitter, internally containing a high-pressure chamber a and a low-pressure chamber b. The pressure transmitter body A has two gas path interfaces 1, namely a high-pressure gas path interface 11 and a low-pressure gas path interface 12. The high-pressure gas path interface 11 connects to the high-pressure chamber a, and the low-pressure gas path interface 12 connects to the low-pressure chamber b. Both the high-pressure and low-pressure gas path interfaces 11 and 12 are connected to cooling pipes 2, allowing simultaneous application to both the positive and negative pressure sides of the differential pressure transmitter. This enables synchronous cooling and pressure stabilization of the gas introduced into both the high-pressure and low-pressure chambers a and b, effectively avoiding measurement errors caused by inconsistent temperature or pressure fluctuations of the media on both sides.

[0029] like Figure 4 As shown in this embodiment, during actual use, the cooling pipe 2 is inserted into the low-temperature chamber of the cooling device. Heat exchange allows the gas to be measured inside the cooling pipe 2 to be rapidly cooled. Furthermore, the cooling pipe 2 has high structural strength, enabling the construction of a standardized, multi-functional external platform. Besides integrating the cooling device, it can also be easily adapted to other functional accessories, providing great flexibility for the functional expansion of the pressure measurement system and avoiding repetitive structural design for a single function.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A pressure transmitter with a cooling tube, comprising a pressure transmitter body (A), characterized in that: The pressure transmitter body (A) is provided with a gas passage interface (1), and the gas passage interface (1) is pre-installed with an outwardly extending cooling pipe (2). The cooling pipe (2) is made of metal material and can cool the internal gas in the form of heat exchange.

2. A pressure transmitter with a cooling tube as claimed in claim 1, characterized in that: The cooling pipe (2) includes a connecting pipe section (21) and a cooling pipe section (22), the cooling pipe section (22) being used to integrate cooling equipment; The cooling pipe section (22) is a straight pipe structure with a length of 300-350mm and a hole diameter of 6-10mm. The hole diameter of the connecting pipe section (21) is smaller than that of the cooling pipe section (22).

3. A pressure transmitter with a cooling tube as claimed in claim 2, characterized in that: The gas interface (1) has a connection channel (1a), and the connection pipe section (21) is welded and fixed inside the connection channel (1a); the diameter of the connection channel (1a) gradually decreases from the outside to the inside, and the inner end of the connection pipe section (21) is a tapered structure adapted to the connection channel (1a).

4. A pressure transmitter with a cooling pipe according to claim 1, characterized in that: The outer end of the connecting channel (1a) is provided with a guide slope (1b).

5. A pressure transmitter with a cooling pipe according to claim 1, characterized in that: The cooling pipe (2) has an inlet slope (2a) on the outer edge of one end that extends into the connecting channel (1a).

6. A pressure transmitter with a cooling pipe according to claim 4, characterized in that: The outer wall of the connecting pipe section (21) is provided with an annular protrusion (2b), and the outer end of the guide slope (1b) is connected with an annular groove (1c); the annular protrusion (2b) is fixed in the annular groove (1c).

7. A pressure transmitter with a cooling pipe according to claim 1, characterized in that: The pressure transmitter body (A) is a differential pressure transmitter with two air passage interfaces (1), which are a high-pressure air passage interface (11) and a low-pressure air passage interface (12), both of which are connected to a cooling pipe (2).

8. A pressure transmitter with a cooling pipe according to claim 1, characterized in that: The cooling pipe (2) is made of stainless steel.

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