A gas temperature and pressure integrated sensor

Abstract

The utility model discloses a kind of gas temperature and pressure integrated sensors, including shell and communicating pipe, the communicating pipe upper end is equipped with through-hole, the shell lower end passes through through-hole and extends into communicating pipe, the through-hole upper end is equipped with snap ring, the snap ring is in and located the upper end of through-hole is equipped with sealing assembly, the sealing ring is equipped with movable cavity, movable cavity is equipped with movable ring, the movable ring upper end is equipped with several push block, the movable ring lateral wall is equipped with several limit hole, the movable cavity is fixedly equipped with fixed ring, the moving hole is movably equipped with sealing ring, the sealing ring outside is equipped with several fixed column, the movable ring inside is equipped with trapezoidal face. The utility model realizes the linkage of installation process and sealing activation, ensure optimal sealing effect while being completely tightened, significantly improve the anti-leakage safety under gas measurement environment, fundamentally eliminate the measurement distortion and safety accident caused by insufficient sealing.

Description

Technical Field

[0001] This utility model relates to the field of gas temperature and pressure detection technology, specifically a gas temperature and pressure integrated sensor. Background Technology

[0002] A gas temperature and pressure integrated sensor is an integrated device capable of simultaneously measuring temperature and pressure parameters in gas pipelines or equipment. It is crucial for gas metering, safety monitoring, and process control. Chinese Patent No. CN202420248627.8 discloses a temperature and pressure sensor comprising: a housing with a first mounting cavity at its upper end and a first internal thread on the inner wall of the first mounting cavity; a pressure inlet at the lower end of the housing; a connector with a through hole at its center and a second mounting cavity near the through hole; a first external thread on the outer wall of the connector; and a pressure detection module connected to the housing via the first external thread and the first internal thread; a pressure detection module connected to the connector via the through hole; and a temperature detection module disposed within the second mounting cavity. This invention achieves simultaneous measurement of temperature and pressure by simultaneously incorporating a pressure detection module and a temperature detection module, exhibiting high integration and simplifying the structure of the temperature and pressure composite sensor. The threaded connection of the connector to the housing further enhances overall sealing performance.

[0003] Based on the above, the inventors have discovered the following problems: The above-mentioned device can measure temperature and pressure simultaneously, but for a temperature and pressure sensor used for gas, its sealing effect also needs to be considered. Once a leak occurs, it can easily cause a fatal fire or even an explosion. At the same time, the leak will seriously damage the measurement conditions, resulting in a continuously low pressure reading and temperature distortion, causing the control, alarm and trade measurement systems that rely on its data to completely fail, resulting in incalculable safety and economic risks. Utility Model Content

[0004] The purpose of this invention is to provide a gas temperature and pressure integrated sensor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas temperature and pressure integrated sensor, comprising a housing and a connecting pipe, wherein a sensing component is provided inside the housing, a data cable is provided at the top of the housing, a through hole is provided at the upper end of the connecting pipe, the lower end of the housing extends into the connecting pipe through the through hole, a retaining ring is provided at the upper end of the through hole, a mounting component is provided on the side of the housing, the retaining ring is threadedly connected to the mounting component, and a sealing component is provided inside the retaining ring and located at the upper end of the through hole.

[0006] Furthermore, the sealing assembly includes a sealing ring, a limiting groove between the sealing ring and the retaining ring, the limiting groove being adapted to the mounting component, a retaining groove at the lower end of the mounting component being adapted to the sealing ring, a movable cavity within the sealing ring, a movable ring within the movable cavity, a plurality of pushing blocks at the upper end of the movable ring, the pushing blocks penetrating the upper end of the sealing ring and extending beyond the sealing ring, a plurality of limiting holes on the side wall of the movable ring, a fixed ring being fixedly installed within the movable cavity, a movable hole being opened on the inner side of the sealing ring, a sealing ring being movably installed within the movable hole, a plurality of fixed posts on the outer side of the sealing ring, the fixed posts passing through corresponding limiting holes and connecting to the inner side of the fixed ring, and a trapezoidal surface on the inner side of the movable ring.

[0007] Furthermore, the trapezoidal surface is located in the area between the top and bottom of the limiting hole.

[0008] Furthermore, the pushing block is vertically aligned with the top of the slot.

[0009] Furthermore, the inner diameter of the cross-section at the top of the trapezoidal surface is smaller than the inner diameter of the cross-section at the bottom of the trapezoidal surface.

[0010] Furthermore, the length of the fixing post is equal to the width of the bottom end of the trapezoidal surface, and the fixing post and the sealing ring themselves are elastic.

[0011] Compared with the prior art, the beneficial effects of this utility model are: this integrated gas temperature and pressure sensor is reasonable and has the following advantages:

[0012] (1) By setting up a dynamic sealing assembly consisting of a movable ring, a trapezoidal surface, a sealing ring, and a fixed post, during the tightening of the mounting part and the snap ring thread, the movable ring is driven to move downward by the downward pressing block of the snap ring groove. The inclined structure of the trapezoidal surface radially compresses the sealing ring, making it tightly hug the lower end of the housing to form an effective seal. This design realizes the linkage between the installation process and the seal activation, ensuring that the optimal sealing effect is obtained while fully tightening, significantly improving the leak prevention safety in the gas measurement environment, and fundamentally eliminating measurement distortion and safety accidents caused by insufficient sealing;

[0013] (2) The matching structure between the limiting groove and the mounting part, as well as the traction effect of the fixing ring on the fixing column, ensure that the sealing ring is subjected to uniform force and does not deviate when subjected to radial compression, thus ensuring long-lasting and stable sealing performance. This structure not only improves the reliability of the seal, but also avoids seal failure caused by repeated installation and disassembly or vibration, extends the service life of the sensor under harsh working conditions, and reduces maintenance requirements. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external three-dimensional structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the present invention;

[0016] Figure 3 This is an enlarged structural diagram of the present invention.

[0017] Figure 4 This is an enlarged structural diagram of the connection relationship of this utility model;

[0018] In the diagram: 1. Housing; 2. Data cable; 3. Connecting pipe; 4. Mounting component; 5. Slot; 6. Snap ring; 7. Sealing ring; 8. Through hole; 9. Movable cavity; 10. Moving hole; 11. Push block; 12. Limiting hole; 13. Trapezoidal surface; 14. Fixing ring; 15. Sealing ring; 16. Fixing post; 17. Movable ring; 18. Limiting groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 The present invention provides a technical solution as follows:

[0021] Example:

[0022] A gas temperature and pressure integrated sensor includes a housing 1 and a connecting pipe 3. The housing 1 is provided with a sensing component. The top of the housing 1 is provided with a data cable 2. The upper end of the connecting pipe 3 is provided with a through hole 8. The lower end of the housing 1 extends into the connecting pipe 3 through the through hole 8. A retaining ring 6 is provided at the upper end of the through hole 8. A mounting part 4 is provided on the side of the housing 1. The retaining ring 6 is threadedly connected to the mounting part 4. A sealing component is provided inside the retaining ring 6 and located at the upper end of the through hole 8.

[0023] The sealing assembly includes a sealing ring 7, a limiting groove 18 between the sealing ring 7 and the retaining ring 6, the limiting groove 18 being adapted to the mounting component 4, a retaining groove 5 at the lower end of the mounting component 4 being adapted to the sealing ring 7, a movable cavity 9 inside the sealing ring 7, a movable ring 17 inside the movable cavity 9, a plurality of pushing blocks 11 at the upper end of the movable ring 17, the pushing blocks 11 penetrating the upper end of the sealing ring 7 and extending out of the sealing ring 7, a plurality of limiting holes 12 on the side wall of the movable ring 17, a fixing ring 14 fixedly installed inside the movable cavity 9, a moving hole 10 inside the sealing ring 7, a sealing ring 15 movably installed inside the moving hole 10, a plurality of fixing posts 16 outside the sealing ring 15, the fixing posts 16 passing through the corresponding limiting holes 12 and connecting to the inner side of the fixing ring 14, and a trapezoidal surface 13 on the inner side of the movable ring 17.

[0024] The trapezoidal surface 13 is located between the top and bottom ends of the limiting hole 12.

[0025] The push block 11 is vertically aligned with the top of the slot 5.

[0026] Wherein, the inner diameter of the cross section at the top of the trapezoidal surface 13 is smaller than the inner diameter of the cross section at the bottom of the trapezoidal surface 13.

[0027] The length of the fixing post 16 is equal to the width of the bottom end of the trapezoidal surface 13, and the fixing post 16 and the sealing ring 15 are elastic.

[0028] Working principle: During installation, the mounting part 4 on the side of the housing 1 is rotated to connect with the retaining ring 6 at the upper end of the connecting pipe 3 via a threaded connection. As the mounting part 4 is tightened, the retaining groove 5 at its lower end presses the pushing block 11 on the aligned sealing ring 7 downwards in the vertical direction. The downward movement of the pushing block 11 causes the movable ring 17 at its bottom to move downwards synchronously within the movable cavity 9. The trapezoidal surface 13 on the inner side of the movable ring 17 moves downwards accordingly. Since the inner diameter of the cross-section at the top of the trapezoidal surface 13 is smaller than the inner diameter of the cross-section at the bottom, this downward movement of the inclined surface radially presses the outer side of the sealing ring 15 and... The tensioning and fixing post 16 causes the sealing ring 15 to move inward (i.e., radially towards the center) and deform within the moving hole 10, thereby tightly wrapping around the lower end of the housing 1 that passes through it, forming an effective radial seal. The difference in cross-sectional diameter between the bottom and top of the trapezoidal surface 13 ensures that the sealing ring 15 can be fully compressed to provide maximum sealing force when the movable ring 17 moves down to its limit position. At the same time, the fit between the sealing ring 7 and the slot 5, and the limiting groove 18 and the mounting part 4, together ensure the alignment and stability of the entire sealing assembly during installation, ultimately achieving a double sealing effect.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gas temperature and pressure integrated sensor, comprising a housing (1) and a connecting pipe (3), characterized in that: The housing (1) is provided with a sensing component. The top of the housing (1) is provided with a data cable (2). The upper end of the connecting pipe (3) is provided with a through hole (8). The lower end of the housing (1) passes through the through hole (8) and extends into the connecting pipe (3). The upper end of the through hole (8) is provided with a retaining ring (6). The side of the housing (1) is provided with a mounting part (4). The retaining ring (6) is threadedly connected to the mounting part (4). The retaining ring (6) is provided with a sealing component inside the through hole (8) and located at the upper end of the through hole (8).

2. The gas temperature and pressure integrated sensor according to claim 1, characterized in that: The sealing assembly includes a sealing ring (7), a limiting groove (18) between the sealing ring (7) and the retaining ring (6), the limiting groove (18) being adapted to the mounting part (4), the mounting part (4) having a retaining groove (5) at its lower end, the retaining groove (5) being adapted to the sealing ring (7), the sealing ring (7) having a movable cavity (9) inside, the movable cavity (9) having a movable ring (17) inside, the movable ring (17) having a plurality of pushing blocks (11) at its upper end, the pushing blocks (11) penetrating the upper end of the sealing ring (7) and Extending out of the sealing ring (7), the movable ring (17) has several limiting holes (12) on its side wall. A fixed ring (14) is fixedly installed in the movable cavity (9). A moving hole (10) is opened on the inner side of the sealing ring (7). A sealing ring (15) is movably installed in the moving hole (10). Several fixed posts (16) are provided on the outer side of the sealing ring (15). The fixed posts (16) pass through the corresponding limiting holes (12) and connect to the inner side of the fixed ring (14). A trapezoidal surface (13) is provided on the inner side of the movable ring (17).

3. The gas temperature and pressure integrated sensor according to claim 2, characterized in that: The trapezoidal surface (13) is located between the top and bottom of the limiting hole (12).

4. The gas temperature and pressure integrated sensor according to claim 3, characterized in that: The push block (11) is vertically aligned with the top of the slot (5).

5. A gas temperature and pressure integrated sensor according to claim 4, characterized in that: The inner diameter of the cross section at the top of the trapezoidal surface (13) is smaller than the inner diameter of the cross section at the bottom of the trapezoidal surface (13).

6. A gas temperature and pressure integrated sensor according to claim 5, characterized in that: The length of the fixing post (16) is equal to the width of the bottom end of the trapezoidal surface (13), and the fixing post (16) and the sealing ring (15) themselves are elastic.

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