High-temperature-resistant pressure transmitter

Abstract

The utility model discloses a high-temperature-resistant pressure transmitter, which relates to the technical field of pressure transmitters and comprises a pressure transmitter body, a heat insulation cover plate is fixedly mounted on the surface of the pressure transmitter body, a connecting pipe is fixedly connected to the bottom of the pressure transmitter body, and a fixing device is arranged at the lower end of the connecting pipe. The fixing device comprises a first pressing plate used for improving stability, the first pressing plate is fixedly connected to the lower end of the connecting pipe, a rotating shaft is rotatably connected to the interior of the first pressing plate, and according to the high-temperature-resistant pressure transmitter, after the two sliding plates are loosened, the spring can release elastic force and push the two fixing rods to be clamped into the two through holes in a sliding mode; through the first pressing plate and the second pressing plate, the installation stability of the pressure transmitter body is improved, the anti-pressure capability and the sealing performance of the connection part are enhanced, cracking or air leakage is prevented, and the accuracy of pressure measurement is further improved.

Description

Technical Field

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

[0002] A pressure transmitter is a device that converts pressure into electrical 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, regulators, etc. for measurement, indication and process regulation.

[0003] The currently published patent: CN211291858U discloses a high-temperature resistant pressure transmitter. The pressure transmitter is provided with a cooling mechanism. When the temperature is higher than the normal working temperature of the pressure transmitter, the cooling mechanism operates to lower the working temperature so that the pressure transmitter can continue to work normally. By designing a heat sink on the housing of the pressure transmitter, the heat sink can assist in heat dissipation when the pressure transmitter is used, and the inner side of the heat sink passes through the housing of the pressure transmitter and contacts the heat dissipation pipe, which assists the heat dissipation pipe to conduct heat outward, thereby achieving a better heat dissipation effect.

[0004] Based on the above search, it is found that the above patent has the following problems when in use: when the pressure transmitter is in use, the cooling mechanism is used to cool the pressure transmitter so that the pressure transmitter can continue to work normally. However, the connection design of the measured pipeline of the pressure transmitter is relatively traditional, and it is only connected and fixed by simple threads, with poor pressure resistance. The sealing of the connection is not good and it is easy to crack or leak, thereby affecting the accuracy of pressure measurement. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a high temperature resistant pressure transmitter, which can solve the problem that the pressure transmitter is only connected and fixed by simple threads, has poor pressure resistance, poor sealing at the connection, is prone to cracking or leakage, and thus affects the accuracy of pressure measurement.

[0006] To achieve the above object, the utility model provides the following technical solution: a high temperature resistant pressure transmitter, comprising a pressure transmitter body, a heat insulating cover plate is fixedly installed on the surface of the pressure transmitter body, a connecting pipe is fixedly connected to the bottom of the pressure transmitter body, and a fixing device is provided at the lower end of the connecting pipe;

[0007] Among them, the fixing device includes a first pressure plate for increasing stability, the first pressure plate is fixedly connected to the lower end of the connecting pipe, the interior of the first pressure plate is rotatably connected to a rotating shaft, the surface of the rotating shaft is fixedly sleeved with a rotating plate, and the surface of the rotating plate is fixedly connected to a second pressure plate.

[0008] Preferably, an annular groove is formed on the inner wall of the connecting pipe, and a rubber sealing ring for sealing is slidably engaged inside the annular groove.

[0009] Preferably, the interior of the connecting pipe is slidably connected with a liquid pipeline, and the surface of the rubber sealing ring is in contact with the surface of the liquid pipeline.

[0010] Preferably, two arc-shaped blocks are fixedly connected to the surface of the second pressure plate, and through holes are provided on the surfaces of the two arc-shaped blocks. Two arc-shaped slots are provided at the bottom of the first pressure plate, and the two arc-shaped blocks are slidably connected to the inside of the arc-shaped slots on the same side.

[0011] Preferably, two fixing rods are slidably connected inside the first pressing plate, and the two fixing rods are slidably engaged inside the through holes on the same side.

[0012] Preferably, opposite ends of the two fixing rods are fixedly connected with slides, and opposite sides of the two slides are fixedly connected with springs.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) After the two slide plates are loosened, the spring releases its elastic force and pushes the two fixing rods to slide into the two through holes, thereby fixing the first pressure plate and the second pressure plate together. The first pressure plate and the second pressure plate improve the installation stability of the pressure transmitter body, enhance the pressure resistance and the sealing of the connection, prevent cracking or leakage, and thus improve the accuracy of pressure measurement.

[0015] (2) In the high temperature resistant pressure transmitter, the connecting pipe slides downward and drives the internal rubber sealing ring to squeeze the surface of the liquid pipeline, and then the connection between the connecting pipe and the liquid pipeline is sealed by the rubber sealing ring to avoid liquid leakage and ensure the safety of the pressure transmitter body during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall structure of a high temperature resistant pressure transmitter of the utility model;

[0018] Figure 2 It is a schematic diagram of the surface structure of the rotating shaft of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the first pressing plate of the utility model;

[0020] Figure 4It is a schematic diagram of the cross-sectional structure of the connecting pipe of the utility model.

[0021] Figure numerals: 1. Pressure transmitter body; 2. Insulation cover; 3. Connecting pipe; 4. First pressure plate; 5. Rotating shaft; 6. Rotating plate; 7. Second pressure plate; 8. Liquid pipeline; 9. Annular groove; 10. Rubber sealing ring; 11. Arc block; 12. Through hole; 13. Arc groove; 14. Fixing rod; 15. Slide plate; 16. Spring. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] See also Figure 1-4 The utility model provides a technical solution: a high temperature resistant pressure transmitter, comprising a pressure transmitter body 1, a heat insulating cover plate 2 is fixedly installed on the surface of the pressure transmitter body 1, the heat insulating cover plate 2 protects and insulates the liquid crystal display screen to prevent the high temperature from affecting the liquid crystal display screen, so that the pressure transmitter body 1 can be used at high temperatures, a connecting pipe 3 is fixedly connected to the bottom of the pressure transmitter body 1, a first pressing plate 4 for increasing stability is fixedly connected to the lower end of the connecting pipe 3, and a rotating shaft 5 is rotatably connected inside the first pressing plate 4;

[0027] The rotating shaft 5 is fixedly sleeved with a rotating plate 6, and the rotating plate 6 is fixedly connected with a second pressing plate 7 on its surface;

[0028] The connecting tube 3 is slidably connected to a liquid pipeline 8, and an annular groove 9 is provided on the inner wall of the connecting tube 3. A rubber sealing ring 10 for sealing is slidably connected to the inner wall of the annular groove 9, and the surface of the rubber sealing ring 10 is in contact with the surface of the liquid pipeline 8.

[0029] When the high temperature resistant pressure transmitter is in use, the staff first slides the pressure transmitter body 1 downward and drives the connecting tube 3 to slide and sleeve on the surface of the liquid pipeline 8. The connecting tube 3 slides downward and drives the internal rubber sealing ring 10 to squeeze the surface of the liquid pipeline 8, and then the rubber sealing ring 10 is used to seal the connection between the connecting tube 3 and the liquid pipeline 8 to avoid liquid leakage and ensure the safety of the pressure transmitter body 1 during use.

[0030] Among them, two arc-shaped blocks 11 are fixedly connected to the surface of the second pressing plate 7, and through holes 12 are provided on the surfaces of the two arc-shaped blocks 11. Two arc-shaped slots 13 are provided at the bottom of the first pressing plate 4, and the two arc-shaped blocks 11 are slidably connected to the inside of the arc-shaped slots 13 on the same side;

[0031] The first pressing plate 4 is internally slidably connected to two fixing rods 14, and the two fixing rods 14 are both slidably engaged in the through holes 12 on the same side;

[0032] The opposite ends of the two fixing rods 14 are fixedly connected with a slide plate 15 , and the opposite sides of the two slide plates 15 are fixedly connected with a spring 16 .

[0033] After the connecting pipe 3 is sleeved on the surface of the liquid pipeline 8, the staff can slide the two fixing rods 14 through the two slides 15. The two slides 15 slide and squeeze the spring 16 at the same time. Then the staff can rotate the second pressure plate 7. The second pressure plate 7 rotates and drives the rotating shaft 5 to rotate inside the first pressure plate 4 through the rotating plate 6. The second pressure plate 7 rotates and drives the two arc-shaped blocks 11 to slide into the inside of the arc-shaped groove 13 on the same side. After loosening the two slides 15, the spring 16 can release the elastic force and push the two fixing rods 14 to slide into the inside of the two through holes 12, thereby fixing the first pressure plate 4 and the second pressure plate 7 together. The first pressure plate 4 and the second pressure plate 7 are used to improve the installation stability of the pressure transmitter body 1, enhance the pressure resistance and the sealing of the connection, prevent cracking or leakage, and thus improve the accuracy of pressure measurement.

[0034] Working principle: For the high temperature resistant pressure transmitter, the staff slides the pressure transmitter body 1 and drives the connecting pipe 3 to slide and sleeve on the surface of the liquid pipeline 8, and the rubber sealing ring 10 squeezes the surface of the liquid pipeline 8, and then the rubber sealing ring 10 seals the connection between the connecting pipe 3 and the liquid pipeline 8 to prevent liquid leakage. The staff slides the two fixed rods 14 through the two slides 15 and squeezes the spring 16, and then the staff can rotate the second pressure plate 7. The second pressure plate 7 rotates and drives the rotating shaft 5 to rotate inside the first pressure plate 4 through the rotating plate 6. The second pressure plate 7 rotates and drives the two arc-shaped blocks 11 to slide into the inside of the arc-shaped groove 13 on the same side. After loosening the two slides 15, the spring 16 can release the elastic force and push the two fixed rods 14 to slide into the inside of the two through holes 12. The stability of the installation of the pressure transmitter body 1 is improved through the first pressure plate 4 and the second pressure plate 7, the pressure resistance and the sealing of the connection are enhanced, and cracking or leakage is prevented.

[0035] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A high temperature resistant pressure transmitter, comprising a pressure transmitter body (1), a heat insulating cover plate (2) fixedly mounted on the surface of the pressure transmitter body (1), and a connecting pipe (3) fixedly connected to the bottom of the pressure transmitter body (1), characterized in that: A fixing device is provided at the lower end of the connecting pipe (3); The fixing device comprises a first pressing plate (4) for increasing stability, the first pressing plate (4) being fixedly connected to the lower end of the connecting tube (3), the interior of the first pressing plate (4) being rotatably connected to a rotating shaft (5), the surface of the rotating shaft (5) being fixedly sleeved with a rotating plate (6), and the surface of the rotating plate (6) being fixedly connected to a second pressing plate (7).

2. A high temperature resistant pressure transmitter according to claim 1, characterized in that: The inner wall of the connecting pipe (3) is provided with an annular clamping groove (9), and a rubber sealing ring (10) for sealing is slidably clamped inside the annular clamping groove (9).

3. A high temperature resistant pressure transmitter according to claim 2, characterized in that: The interior of the connecting pipe (3) is slidably connected to a liquid pipeline (8), and the surface of the rubber sealing ring (10) is in contact with the surface of the liquid pipeline (8).

4. The high temperature resistant pressure transmitter according to claim 1, characterized in that: Two arc-shaped clamping blocks (11) are fixedly connected to the surface of the second pressing plate (7), and through holes (12) are provided on the surfaces of the two arc-shaped clamping blocks (11). Two arc-shaped clamping grooves (13) are provided at the bottom of the first pressing plate (4), and the two arc-shaped clamping blocks (11) are slidably clamped in the interior of the arc-shaped clamping grooves (13) on the same side.

5. A high temperature resistant pressure transmitter according to claim 4, characterized in that: Two fixing rods (14) are slidably connected inside the first pressing plate (4), and the two fixing rods (14) are both slidably engaged inside the through holes (12) on the same side.

6. A high temperature resistant pressure transmitter according to claim 5, characterized in that: The opposite ends of the two fixing rods (14) are fixedly connected to a slide plate (15), and the opposite sides of the two slide plates (15) are fixedly connected to a spring (16).

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