A pressure and temperature integrated measuring instrument

Abstract

This utility model discloses an integrated pressure and temperature measuring instrument, including a casing and a pressure transmission mechanism and a temperature transmission mechanism disposed inside the casing. A connector is welded to the bottom of the casing, and a square groove is formed inside the connector. A protective tube is inserted into the center of the square groove. A section of the connector inside the casing is connected to a Bourdon tube. A temperature sensing element is disposed at the bottom of the inner end of the protective tube. A temperature transmission rod is fixedly connected to the top of the temperature sensing element, and the temperature transmission rod extends upward out of the protective tube and connects to the temperature transmission mechanism. This utility model is not limited by the connector thread and can be lengthened according to the depth of the liquid in the pipeline. The temperature sensing element can penetrate deep into the liquid or gas, enabling more accurate temperature measurement. The square groove ensures that the pressure in the pipeline can smoothly enter the instrument, allowing for accurate measurement of the pressure of the liquid in the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument technology, and more specifically, to an integrated pressure and temperature measuring instrument. Background Technology

[0002] like Figure 1 As shown, this is a traditional pressure and temperature integrated measuring instrument. Water and air holes are machined into the center of connector 2, and a spring tube 4 is welded onto connector 2 for measuring pressure in the pipeline. Threaded holes are machined into the surface of the connector parts for installing a temperature sensing element 5 to measure temperature in the pipeline. Its disadvantages are: limited by the mounting thread 7, it can only measure the temperature and pressure of the liquid in the pipeline at close range, and the temperature sensing element 5 is located far from the liquid in the pipeline inside the instrument, making accurate temperature measurement difficult. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies that can only measure the temperature and pressure of liquids in pipes at close range and whose temperature is not easy to measure accurately. This invention provides an integrated pressure and temperature measuring instrument to solve the above-mentioned shortcomings.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A pressure and temperature integrated measuring instrument includes a casing and a pressure transmission mechanism and a temperature transmission mechanism disposed inside the casing. A connector is welded to the bottom of the casing. A square groove is formed inside the connector, and a protective tube is inserted into the center of the square groove. The section of the connector inside the casing is connected to a Bourdon tube. A temperature sensing element is disposed at the bottom of the inner end of the protective tube. A temperature transmission rod is fixedly connected to the top of the temperature sensing element. The temperature transmission rod extends upward out of the protective tube and connects to the temperature transmission mechanism.

[0006] Furthermore, the bottom end of the connector is provided with mounting threads.

[0007] Furthermore, the square groove includes four elongated grooves and one circular groove. The four elongated grooves are evenly distributed on the outer surface of the circular groove and are connected to the circular groove.

[0008] Furthermore, the circular grooves are installed with an interference fit with the protective tube, the tops of the four long grooves are sealed, and the bottoms of the four long grooves are pressure inlets.

[0009] Furthermore, the connector is also provided with a spring tube groove, which is connected to four long grooves.

[0010] Furthermore, one end of the spring tube is installed in the spring tube groove, and the other end of the spring tube is connected to the pressure transmission mechanism.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0012] 1. The temperature sensing element is a separate main unit, and a protective tube for installing the temperature sensing element is added. It is not limited by the joint thread and can be lengthened according to the depth of the liquid in the pipe. The temperature sensing element can penetrate into the liquid or gas and, together with the temperature transmission rod, can measure the temperature more accurately.

[0013] 2. The connector is equipped with a square groove, into which a protective tube is inserted. The square groove also has four long grooves with a top seal, which are connected to the spring tube groove, thus ensuring that the pressure in the pipeline can smoothly enter the instrument and accurately measure the pressure of the liquid in the pipeline. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a traditional integrated pressure and temperature measuring instrument.

[0015] Figure 2 This is a schematic diagram of the integrated pressure and temperature measuring instrument of this utility model;

[0016] Figure 3 This is a schematic diagram of the assembly of the protective tube of this utility model;

[0017] Figure 4 This is a schematic diagram of the connector structure of this utility model;

[0018] Figure 5 for Figure 4 A bottom view;

[0019] Figure 6 This is a front view of the pressure measurement state of this utility model;

[0020] Figure 7 This is a side view of the transmission mechanism of this utility model;

[0021] Figure 8 This is a top-view isometric view of the temperature transmission mechanism of this utility model.

[0022] Figure 9 This is an isometric view of the temperature transmission mechanism of this utility model from a low angle.

[0023] In the diagram: 1. Case; 2. Connector; 3. Protective tube; 4. Bourdon tube; 5. Temperature sensing element; 6. Temperature transmission rod; 7. Mounting thread; 8. Long slot; 9. Round slot; 10. Pressure inlet; 11. Bourdon tube slot; 12. Pressure indicator needle; 13. Temperature indicator needle; 14. Pressure transmission mechanism; 15. Temperature transmission mechanism; 16. Drive shaft; 17. First gear; 18. Second gear. Detailed Implementation

[0024] 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.

[0025] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0026] See Figures 2-4 A pressure and temperature integrated measuring instrument includes a housing 1 and a pressure transmission mechanism 14 and a temperature transmission mechanism 15 disposed inside the housing 1. A pressure indicator needle 12 is installed on the pressure transmission mechanism, and a temperature indicator needle 13 is installed on the temperature transmission mechanism. A connector 2 is welded to the bottom of the housing 1. A square groove is opened inside the connector 2, and a protective tube 3 is inserted into the center of the square groove. The section of the connector 2 inside the housing 1 is connected to a spring tube 4. A temperature sensing element 5 is disposed at the bottom of the inner end of the protective tube 3. A temperature transmission rod 6 is fixedly connected to the top of the temperature sensing element 5. The temperature transmission rod 6 extends upward out of the protective tube 3 and connects to the temperature transmission mechanism. (See also: pressure transmission mechanism 14 and temperature transmission mechanism 15) Figure 7 All of these are existing technologies.

[0027] See Figure 8-9 The temperature transmission mechanism 15 includes a transmission shaft 16, a first gear 17, and a second gear 18. The bottom of the transmission shaft 16 is connected to the temperature transmission rod 6 via a pin. The transmission shaft 16 is movably mounted on the first fixed plate. The first gear 17 is fixedly mounted on the upper end of the transmission shaft 16. The first gear 17 meshes with the second gear 18, which is mounted between the first and second fixed plates. One end of the second gear 18 is movably connected to the first fixed plate. The central shaft of the second gear 18 movably passes through the second fixed plate. The central shaft of the second gear 18 is used to mount the temperature pointer 13.

[0028] The first gear 17 is installed horizontally, and the second gear 18 is installed vertically, with the first gear 17 and the second gear 18 being perpendicular to each other.

[0029] The bottom end of connector 2 has an installation thread 7, and the entire measuring instrument is installed on the pipe to be tested through the installation thread 7.

[0030] See Figure 5 The square groove includes four long grooves 8 and one circular groove 9. The four long grooves 8 are evenly distributed on the outer surface of the circular groove 9 and are connected to the circular groove 9. The diameter of the circular groove 9 is 8mm, and the maximum distance between the two opposite long grooves 8 is 9mm.

[0031] The selected protective tube 3 is made of stainless steel and has a diameter of 8mm. The circular groove 9 and the protective tube 3 are installed with an interference fit. The top of the four long grooves 8 are sealed with silver solder to ensure a sealed state between the protective tube 3 and the connector 2. The bottom of the four long grooves 8 is the pressure inlet 10.

[0032] The connector 2 is also provided with a spring tube groove 11, which is connected to four long grooves 8.

[0033] One end of the spring tube 4 is installed in the spring tube groove 11, and the other end of the spring tube 4 is connected to the pressure transmission mechanism.

[0034] This utility model has the following two working states:

[0035] Pressure display status: Pressure enters the interior of connector 2 through the pressure inlet 10 of the long groove 8 in the center of connector 2 (see...) Figure 6 Because the upper end of the protective tube 3 has been silver-welded into a sealed structure, the gas enters the inside of the spring tube 4 through the spring tube groove 11, causing the spring tube 4 to deform. The spring tube 4 deforms and then returns to its original shape. This repeated process drives the pressure transmission mechanism 14 to rotate (this process is existing technology, so it will not be described in detail), and drives the pressure pointer 12 to rotate, thereby indicating the accurate pipeline pressure value on the dial.

[0036] Temperature display status: When the temperature sensing element 5 enters the liquid or gas, it senses the temperature and rotates, which in turn drives the temperature transmission rod 6 to rotate. The temperature transmission rod 6 is connected to the temperature transmission mechanism 15 in the transmission mechanism, thereby driving the temperature transmission mechanism 15 to rotate. The rotation of the temperature transmission mechanism 15 drives the temperature pointer 13 to rotate, thereby indicating an accurate temperature value on the dial.

[0037] The process by which the temperature transmission rod 6 connects to the temperature transmission mechanism 15 in the transmission mechanism, thereby driving the temperature transmission mechanism 15 to rotate, is as follows:

[0038] After the temperature transmission rod 6 rotates, it drives the transmission shaft 16 to rotate, which in turn causes the first gear 17 to rotate. The first gear 17 drives the second gear 18 to rotate, thereby causing the temperature pointer 13 to rotate.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure and temperature integrated measuring instrument, comprising a casing (1) and a pressure transmission mechanism (14) and a temperature transmission mechanism (15) disposed inside the casing (1), characterized in that... The bottom of the watch case (1) is welded with a connector (2). The inside of the connector (2) is provided with a square groove. A protective tube (3) is inserted into the center of the square groove. The section of the connector (2) inside the watch case (1) is connected to the spring tube (4). A temperature sensing element (5) is provided at the bottom of the inside of the protective tube (3). A temperature transmission rod (6) is fixedly connected to the top of the temperature sensing element (5). The temperature transmission rod (6) extends upward out of the protective tube (3) and is connected to the temperature transmission mechanism.

2. The pressure and temperature integrated measuring instrument according to claim 1, characterized in that... The bottom end of the connector (2) is provided with an installation thread (7).

3. The pressure and temperature integrated measuring instrument according to claim 1, characterized in that... The square groove includes four long grooves (8) and one circular groove (9). The four long grooves (8) are evenly distributed on the outer surface of the circular groove (9) and are connected to the circular groove (9).

4. The pressure and temperature integrated measuring instrument according to claim 3, characterized in that... The circular groove (9) is installed with an interference fit with the protective tube (3), the top of the four long grooves (8) is sealed, and the bottom of the four long grooves (8) is a pressure inlet (10).

5. The pressure and temperature integrated measuring instrument according to claim 4, characterized in that... The connector (2) is also provided with a spring tube groove (11), which is connected to four long grooves (8).

6. The pressure and temperature integrated measuring instrument according to claim 5, characterized in that... One end of the spring tube (4) is installed in the spring tube groove (11), and the other end of the spring tube (4) is connected to the pressure transmission mechanism.

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