Rotatable high-precision intelligent differential pressure transmitter

Abstract

The utility model discloses a rotatable high-precision intelligent differential pressure transmitter, which comprises an installation main body, the front side of the installation main body is fixedly connected with a threaded interface, the back side of the installation main body is rotatably connected with an adjusting rod, the interior of the installation main body is rotatably connected with a first shell, and two sides of the first shell are symmetrically and slidably connected with sliding rods. The end, away from the first shell, of the sliding rod is perpendicularly and fixedly connected with the inner side of the mounting body, a second shell is fixedly connected to the upper portion of the first shell, a level meter is arranged on one side of the upper portion of the second shell, and display screens are symmetrically and fixedly connected to the two sides of the second shell. According to the utility model, the first shell is adjusted through the adjusting rod, the angle of the differential pressure transmitter is adjusted through the rotation of the sliding rod in the mounting main body, and the arrangement of the mounting main body is also suitable for detection that two groups of liquid inlet pipelines are not at the same horizontal position. Therefore, the angle range and the application range of horizontal adjustment of the differential pressure transmitter are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of differential pressure transmitters, and in particular relates to a rotatable high-precision intelligent differential pressure transmitter. Background Technology

[0002] A differential pressure transmitter is an instrument used to measure the pressure difference between two different points. This type of transmitter is widely used in industrial automation, process control, and monitoring systems for the indirect measurement of parameters such as fluid flow rate, level, and density. The core of a differential pressure transmitter is its sensing element, typically a diaphragm or similar sensitive component, which responds to changes in applied pressure. When the pressure of the measured medium acts on both sides of the diaphragm, the diaphragm deforms, and this deformation is proportional to the pressure difference. The sensor inside the transmitter converts the mechanical deformation into an electrical signal, which is then amplified, linearized, and temperature compensated before finally outputting a standard electrical signal (e.g., 4-20mA, 0-10V). This signal can be read by a remote control system for control or monitoring purposes. Because the sensing element is quite sensitive, when the equipment is tilted, the measured medium at one end of the diaphragm will compress the diaphragm under gravity, leading to inaccurate data. Therefore, differential pressure transmitters are often installed as horizontally as possible.

[0003] Among the existing published patents, Chinese patent application number CN202023252020.8 describes a differential pressure transmitter, which includes a first housing, a second housing, a template, a sensor body, a protective plate, and a storage block. Two storage blocks are symmetrically fixed on both sides of the first housing. A storage groove is formed on the side of the storage block away from the first housing. An extension block is hinged in the storage groove. One end of the extension block extends out of the storage groove around the hinge. A horizontal square groove is formed on the upper surface of the extension block. A level is installed in the horizontal square groove. A magnetic strip is also installed in the middle of one side of the extension block. An anisotropic magnetic block adapted to the magnetic strip is installed on the groove wall in the storage groove. A snap-fit ​​groove is formed on the side of the extension block away from the magnetic strip.

[0004] However, existing technologies have some problems: Although the differential pressure transmitter described above can be leveled by adjusting the inlet pipe through a level gauge in a horizontal slot, the differential pressure transmitter needs to be leveled before the inlet pipe is tightened. During the tightening process, it is impossible to guarantee that the differential pressure transmitter will deflect during the adjustment, resulting in an unsatisfactory leveling effect. Moreover, the prerequisite for leveling depends on the vertical height difference between the two sets of inlet pipes. When the vertical height difference between the two sets of inlet pipes is large, the horizontal adjustment angle of the differential pressure transmitter is very limited, making it difficult to achieve overall leveling of the equipment. Therefore, we propose a rotatable, high-precision intelligent differential pressure transmitter. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a rotatable high-precision intelligent differential pressure transmitter. The angle of the differential pressure transmitter can be adjusted by adjusting the first housing within the mounting body via a sliding rod. At the same time, the mounting body is also suitable for detecting when two sets of liquid inlet pipes are not at the same horizontal position, thereby improving the angle range and application range of the differential pressure transmitter for horizontal adjustment.

[0006] This utility model is implemented as follows: a rotatable high-precision intelligent differential pressure transmitter includes a mounting body. A threaded interface is fixedly connected to the front side of the mounting body, and an adjusting rod is rotatably connected to the back side of the mounting body. A first housing is rotatably connected inside the mounting body. Sliding rods are symmetrically slidably connected to both sides of the first housing. The end of the sliding rod away from the first housing is perpendicularly fixedly connected to the inner side of the mounting body. A second housing is fixedly connected above the first housing. A level is provided on one side of the upper part of the second housing, and display screens are symmetrically fixedly connected to both sides of the second housing.

[0007] Optionally, a control button is provided on one side of the level gauge, and a flip cover is provided above the control button, the flip cover being rotatably connected to the second housing.

[0008] Optionally, the first housing is provided with a liquid inlet port on the side near the threaded interface, and a stainless steel flexible hose is threadedly connected between the liquid inlet port and the threaded interface.

[0009] Optionally, the threaded interface extends through the mounting body, and the portion of the threaded interface located inside the mounting body is threadedly connected to one end of the stainless steel elastic hose, while the other end of the stainless steel elastic hose is threadedly connected to the liquid inlet port.

[0010] Optionally, arc-shaped slide rails are fixedly connected to both sides of the first housing, and a limiting groove is formed in the middle of the arc-shaped slide rails.

[0011] Optionally, a roller is rotatably connected to one end of the sliding rod near the first housing, and the sliding rod and the arc-shaped slide rail are connected by the roller rolling within the limiting groove.

[0012] Optionally, the adjusting rod passes through the mounting body, and one end of the adjusting rod located inside the mounting body is fixedly connected to the first housing.

[0013] Optionally, the portion of the adjusting rod extending out of the mounting body is threaded, a fixing nut is threaded to the outer side of the thread, and a rotating rod is fixedly connected to the end of the adjusting rod away from the mounting body.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By rotating the adjusting rod, the first housing and the mounting body can rotate relative to each other in both directions via the sliding rod, which greatly increases the horizontal adjustment angle of the differential pressure transmitter.

[0016] 2. The inlet port is connected to the threaded interface with a stainless steel flexible hose, which is suitable for a variety of detection media. It not only ensures that the media can pass smoothly when the first housing rotates, but also has the advantages of corrosion resistance and long service life.

[0017] 3. The differential pressure transmission can be leveled simply by rotating the adjusting rod and referring to the level gauge on the second housing. The operation is quick and convenient, avoiding the angle deflection caused by adjusting the tightness of the liquid inlet pipe.

[0018] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

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

[0020] Figure 2 This is an internal schematic diagram provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the first housing provided by this utility model;

[0022] Figure 4 This utility model provides Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a schematic diagram of the adjusting rod provided by this utility model;

[0024] Figure 6 This is a schematic diagram of the control button provided by this utility model.

[0025] In the diagram: 1. Mounting body; 101. Threaded interface; 2. First housing; 201. Liquid inlet port; 3. Second housing; 301. Display screen; 302. Level gauge; 303. Flip cover; 304. Control button; 4. Adjusting rod; 401. Rotating rod; 5. Arc-shaped slide rail; 501. Limiting groove; 6. Sliding rod; 601. Roller; 7. Stainless steel flexible hose. Detailed Implementation

[0026] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0027] like Figures 1 to 6 As shown in the figure, the present invention provides a rotatable high-precision intelligent differential pressure transmitter, including a mounting body 1. A threaded interface 101 is fixedly connected to the front side of the mounting body 1. An adjusting rod 4 is rotatably connected to the back side of the mounting body 1. A first housing 2 is rotatably connected inside the mounting body 1. Sliding rods 6 are symmetrically slidably connected to both sides of the first housing 2. The end of the sliding rod 6 away from the first housing 2 is vertically fixedly connected to the inner side of the mounting body 1. A second housing 3 is fixedly connected above the first housing 2. A level 302 is provided on one side above the second housing 3. Display screens 301 are symmetrically fixedly connected to both sides of the second housing 3.

[0028] It should be noted that the differential pressure transmitter is horizontally adjusted by rotating the adjusting rod 4 to drive the first housing 2 to rotate left and right relative to the mounting body 1. When the first housing 2 rotates, the sliding rods 6 located on both sides of it slide relative to the sides of the first housing 2, which greatly improves the horizontal adjustment angle of the differential pressure transmitter. At the same time, it limits the first housing 2 to ensure that it can only rotate in one plane. The level is adjusted by visually observing the level gauge 302 on the second housing 3. After the level is adjusted, it is locked by the locking device to ensure that the differential pressure transmitter is always in a horizontal state when detecting the medium, thus ensuring the accuracy of the detection.

[0029] It is worth noting that when the two sets of inlet pipes are not at the same horizontal level, the equipment can be leveled and fixed by adding external pads under the main body 1 to ensure that the equipment can work stably and ensure the accuracy of the test.

[0030] In a preferred embodiment of this application, a control button 304 is provided on one side of the level 302, and a flip cover 303 is provided above the control button 304. The flip cover 303 is rotatably connected to the second housing 3.

[0031] It should be noted that the flip cover 303 can protect the control button 304, preventing accidental touches and other impurities from entering the circuit board inside the control button 304. When operating, simply flip open the flip cover 303 to perform zeroing operations on the differential pressure transmitter through the control button 304. This replaces the traditional method of placing the control button 304 below the nameplate, which required removing screws to operate the control button 304, thus improving the operational flexibility of the differential pressure transmitter.

[0032] In a preferred embodiment of this application, a liquid inlet port 201 is provided on the side of the first housing 2 near the threaded interface 101, and a stainless steel elastic hose 7 is threadedly connected between the liquid inlet port 201 and the threaded interface 101.

[0033] It should be noted that the stainless steel flexible hose 7 has a certain degree of elasticity, and will not affect the passage of the liquid inlet pipe when the first housing 2 is rotated, thus ensuring smooth flow of the medium. At the same time, the stainless steel flexible hose 7 also has strong corrosion resistance and a long service life. Moreover, the threaded connection makes it convenient and quick to replace later.

[0034] In a preferred embodiment of this application, the threaded interface 101 penetrates the mounting body 1, and the portion of the threaded interface 101 located inside the mounting body 1 is threadedly connected to one end of the stainless steel elastic hose 7, while the other end of the stainless steel elastic hose 7 is threadedly connected to the liquid inlet port 201.

[0035] It should be noted that the outer part of the threaded interface 101 has an inlet pipe for receiving the test medium, and the medium enters the first housing 2 through the stainless steel elastic hose 7 for testing.

[0036] In a preferred embodiment of this application, an arc-shaped slide rail 5 is fixedly connected to both sides of the first housing 2, and a limiting groove 501 is formed in the middle of the arc-shaped slide rail 5; a roller 601 is rotatably connected to one end of the sliding rod 6 near the first housing 2, and the sliding rod 6 and the arc-shaped slide rail 5 are connected by the roller 601 rolling in the limiting groove 501.

[0037] It should be noted that when the first housing 2 rotates relative to the mounting body 1, the roller 601 makes relative circular motion within the symmetrical arc-shaped slide rails 5 on both sides, which limits the first housing 2 and ensures that the first housing 2 makes circular motion with the adjusting rod 4 as the center, thus ensuring the stability of the horizontal adjustment.

[0038] In a preferred embodiment of this application, the adjusting rod 4 passes through the mounting body 1, and one end of the adjusting rod 4 located inside the mounting body 1 is fixedly connected to the first housing 2;

[0039] The part of the adjusting rod 4 extending out of the mounting body 1 is threaded, and a fixing nut is connected to the threaded outer side of the thread. A rotating rod 401 is fixedly connected to the end of the adjusting rod 4 away from the mounting body 1.

[0040] It should be noted that the first housing 2 can be rotated by rotating the rotating rod 401 on the adjusting rod 4. The operation is simple and quick, and the differential pressure transmitter can be adjusted horizontally in a fast manner.

[0041] The usage process in the embodiments of this application is as follows:

[0042] First, connect the inlet pipe of the medium to be tested to the threaded interface 101 on the outside of the mounting body 1. The initial position of the roller 601 is located in the middle of the limiting groove 501 on the arc slide rail 5. At this time, observe the level 302 on the second housing 3 to determine whether the differential pressure transmitter is horizontal. If it is not horizontal, loosen the fixing nut on the adjusting rod 4 and rotate the rotating rod 401 to make the first housing 2 rotate relative to the mounting body 1. At the same time, the rollers 601 in the arc slide rails 5 on both sides of the first housing 2 roll relative to the arc slide rails 5, limiting the first housing 2. Adjust the level by observing the level 302. After adjusting the level, fix the second housing 3 with one hand and tighten the fixing nut with the other hand. Perform zeroing operation on the differential pressure transmitter through the control button 304. Then open the valve outside the inlet pipe to send the medium to be tested into the differential pressure transmitter through the stainless steel elastic hose 7. Observe the reading on the display screen 301 to detect the medium to be tested.

[0043] 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 rotatable high-precision intelligent differential pressure transmitter, comprising a mounting body (1), characterized in that: The mounting body (1) is fixedly connected to a threaded interface (101) on the front side, and an adjusting rod (4) is rotatably connected to the back side of the mounting body (1). The mounting body (1) is rotatably connected to a first housing (2). Sliding rods (6) are symmetrically slidably connected to both sides of the first housing (2). The end of the sliding rod (6) away from the first housing (2) is vertically fixedly connected to the inner side of the mounting body (1). A second housing (3) is fixedly connected above the first housing (2). A level (302) is provided on one side above the second housing (3). Display screens (301) are symmetrically fixedly connected to both sides of the second housing (3).

2. The rotatable high-precision intelligent differential pressure transmitter according to claim 1, characterized in that: A control button (304) is provided on one side of the level (302), and a flip cover (303) is provided above the control button (304). The flip cover (303) is rotatably connected to the second housing (3).

3. A rotatable high-precision intelligent differential pressure transmitter according to claim 2, characterized in that: The first housing (2) is provided with a liquid inlet port (201) on the side near the threaded interface (101), and a stainless steel elastic hose (7) is threadedly connected between the liquid inlet port (201) and the threaded interface (101).

4. A rotatable high-precision intelligent differential pressure transmitter according to claim 3, characterized in that: The threaded interface (101) penetrates the mounting body (1). The portion of the threaded interface (101) located inside the mounting body (1) is threaded to one end of the stainless steel elastic hose (7), and the other end of the stainless steel elastic hose (7) is threaded to the liquid inlet port (201).

5. A rotatable high-precision intelligent differential pressure transmitter according to claim 3, characterized in that: The first housing (2) is fixedly connected to two sides with arc-shaped slide rails (5), and a limiting groove (501) is opened in the middle of the arc-shaped slide rails (5).

6. A rotatable high-precision intelligent differential pressure transmitter according to claim 1, characterized in that: The sliding rod (6) is rotatably connected to a roller (601) at one end near the first housing (2), and the sliding rod (6) and the arc-shaped slide rail (5) are rolled in the limiting groove (501) through the roller (601).

7. A rotatable high-precision intelligent differential pressure transmitter according to claim 6, characterized in that: The adjusting rod (4) passes through the mounting body (1), and one end of the adjusting rod (4) inside the mounting body (1) is fixedly connected to the first housing (2).

8. A rotatable high-precision intelligent differential pressure transmitter according to claim 7, characterized in that: The adjusting rod (4) has a thread extending out of the mounting body (1), and a fixing nut is threaded to the outside of the thread. A rotating rod (401) is fixedly connected to the end of the adjusting rod (4) away from the mounting body (1).

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