Intelligent differential pressure on-line densimeter

Abstract

The utility model discloses an intelligent differential pressure on-line densimeter, which relates to the technical field of densimeters and specifically comprises a fixed block, the top of one end of an inner cavity of the fixed block is connected with a pressure transmitter through a bending shaping pipe, the middle of the other end of the fixed block is movably connected with a rotating pipe, and the other end of the rotating pipe is fixedly connected with a fixed pipe. The rotating pipe is fixed on the fixing block, the rotating pipe is connected with the fixing block through a positioning structure, two diaphragm seats are fixed at the lower end of the fixing pipe, the two diaphragm seats are in a vertical distribution state, diaphragms are fixed on the outer sides of inner cavities of the diaphragm seats, and the inner cavities of the diaphragm seats are connected with the pressure input end of a pressure transmitter through connecting pipes. According to the intelligent differential pressure online densimeter, under the action of gravity, the position of the fixing pipe can be automatically adjusted until the fixing pipe is in a vertical state, it is guaranteed that the two diaphragms are located in the same vertical plane, the problem of measurement errors caused by the difference of manual installation of fixing blocks is solved, and the measurement accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of density meters, in particular to an intelligent differential pressure online density meter. Background Art

[0002] The differential pressure online density meter is a pressure density meter produced based on the Pascal principle. Its principle is simple and reliable and it is mainly used to measure the density of liquid media on site. It is a device used to continuously measure the concentration and density of liquids online. It can be directly used in industrial production processes and can also be applied to mining mud, brine, potash, natural gas, lubricating oil, biopharmaceuticals and other industries.

[0003] Some solutions about intelligent differential pressure online density meters are disclosed in the prior art. The intelligent differential pressure online density meters disclosed in the prior art generally include a pressure transmitter and two diaphragm membranes, and the positions of the pressure transmitter and the two diaphragm membranes are fixed, such as the solution disclosed in the authorized patent document with application number CN202122018661.5 or CN202020641597.9. This type of intelligent differential pressure online density meter is easily restricted by the installation location when in use, and after installation, the position of the pressure transmitter is fixed, and the user can only view the data from a fixed orientation, which reduces its adaptability. In addition, the differential pressure density meter has high requirements for verticality during installation. When installing this type of density meter, the staff cannot quickly determine the verticality between the two diaphragm membranes, which affects the installation quality of the density meter. Based on this, the present application proposes an intelligent differential pressure online density meter. Utility Model Content

[0004] The utility model provides an intelligent pressure differential online density meter, which solves the problem that the pressure differential online density meter proposed in the above background technology is easily restricted by the installation position when in use, and after installation, the position of the pressure transmitter is fixed, and the user can only view the data from a fixed orientation, which reduces its adaptability and makes it difficult to quickly determine the verticality between the two diaphragm membranes.

[0005] The utility model provides the following technical solutions: an intelligent differential pressure online density meter, comprising a fixed block, the top of one end of the inner cavity of the fixed block is connected to a pressure transmitter through a bent shaping tube, the middle of the other end of the fixed block is movably connected to a rotating tube, the other end of the rotating tube is fixedly connected to a fixed tube, and the rotating tube is connected to the fixed block through a positioning structure, two diaphragm seats are fixed at the lower end of the fixed tube, the two diaphragm seats are in a vertically distributed state, a diaphragm film is fixed to the outside of the inner cavity of the diaphragm seat, the inner cavity of the diaphragm seat is connected to the pressure input end of the pressure transmitter through a connecting tube, and the inner cavity of the connecting tube is filled with pressure liquid;

[0006] The positioning structure includes a positioning ring fixedly connected to the outer ring of the rotating tube and a friction ring movably sleeved with the outer ring of the rotating tube. The friction ring is located between the positioning ring and the fixed block. The friction ring and the fixed block are connected through a ball screw, and the ball screw is movably connected to the fixed block.

[0007] Preferably, the fixed block is a hollow structure, one end of the bending shaping tube away from the pressure transmitter extends into the inner cavity of the fixed block, one end of the rotating tube extends into the inner cavity of the fixed block, and the other end of the rotating tube extends into the inner cavity of the fixed tube.

[0008] Preferably, the connecting tube is located inside the fixed tube, the rotating tube, the fixed block and the bending and shaping tube.

[0009] Preferably, the housing of the pressure transmitter is grounded.

[0010] Preferably, the inner cavity of the diaphragm seat is a U-shaped structure, the diaphragm membrane seals the inner cavity of the diaphragm seat, and a protective cover is clamped on the outer surface of the diaphragm seat.

[0011] Preferably, the outer ring of the ball screw is threadedly connected with a ball nut, the ball nut is fixedly connected to the friction ring, and the outer surface of the friction ring is fixedly connected with an anti-slip pad.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The intelligent differential pressure online density meter can automatically adjust the position of the fixed tube under the action of gravity until the fixed tube is in a vertical state, ensuring that the two diaphragm membranes are in the same vertical plane, avoiding the measurement error caused by the difference in the manual installation of the fixed block, and improving the measurement accuracy.

[0014] 2. The intelligent pressure differential online density meter can change the distance between the pressure transmitter and the fixed tube by setting the bending shaping tube, so as to avoid the intelligent pressure differential online density meter being restricted by the installation position during installation, thereby improving the adaptability of the intelligent pressure differential online density meter. After installation, the direction of the LCD screen of the pressure transmitter can be adjusted according to needs, so that the staff can read the readings from the appropriate direction, thereby improving the adaptability of the intelligent pressure differential online density meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of removing the protective cover of the utility model structure;

[0017] Figure 3 The utility model structure Figure 1 Explosion diagram;

[0018] Figure 4 It is a schematic diagram of the structural section of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure and use of the utility model.

[0020] In the figure: 1. fixing block; 2. bending shaping tube; 3. pressure transmitter; 4. fixing tube; 5. diaphragm seat; 6. ball screw; 7. diaphragm; 8. rotating tube; 9. positioning ring; 10. friction ring; 11. connecting tube; 12. ball nut; 13. protective cover; 14. tank body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides an intelligent pressure differential online density meter, comprising a fixed block 1, the fixed block 1 is a hollow structure, a bending shaping tube 2 is fixed to the top of one end of the inner cavity of the fixed block 1, one end of the bending shaping tube 2 extends into the inner cavity of the fixed block 1, and the other end of the bending shaping tube 2 is fixedly connected with a pressure transmitter 3. Through the setting of the bending shaping tube 2, the direction of the liquid crystal screen of the pressure transmitter 3 can be adjusted according to demand, thereby improving the convenience of using the online density meter, and the position and height of the pressure transmitter can be adjusted according to demand, thereby avoiding restrictions on the pressure differential online density meter when in use, and facilitating the installation of the pressure differential online density meter.

[0023] The other end of the inner cavity of the fixed block 1 is movably connected to a rotating tube 8, one end of the rotating tube 8 extends into the inner cavity of the fixed block 1, the other end of the rotating tube 8 is fixedly connected to a fixed tube 4, and the inner cavity of the fixed tube 4 is connected to the inner cavity of the rotating tube 8, and the inner cavities of the fixed tube 4, the rotating tube 8, the fixed block 1 and the bending shaping tube 2 are in a connected state.

[0024] The rotating tube 8 is connected to the fixed block 1 through a positioning structure, which includes a positioning ring 9 fixedly connected to the outer ring of the rotating tube 8 and a friction ring 10 movably sleeved with the outer ring of the rotating tube 8. The friction ring 10 is located between the positioning ring 9 and the fixed block 1. One end of the friction ring 10 close to the fixed block 1 is fixedly connected to a ball nut 12. A ball screw 6 is movably connected to the fixed block 1. The ball screw 6 is threadedly connected to the ball nut 12. Through the setting of the ball screw 6, the rotation of the ball screw 6 can make the ball nut 12 threadedly connected thereto move in the direction of the ball screw 6. When the ball nut 12 moves, it can drive the friction ring 10 fixedly connected thereto to move. When the friction ring 10 is tightly fitted with the positioning ring 9, the friction ring 10 can limit the positioning ring 9, and then the friction ring 10 can limit the rotating tube 8 connected to the positioning ring 9, and the position of the rotating tube 8 can remain unchanged. The outer surface of the friction ring 10 is fixedly connected with an anti-skid pad, which can be made of rubber. The anti-skid pad is provided to increase the friction between the friction ring 10 and the positioning ring 9, so that the friction ring 10 can limit the positioning ring 9.

[0025] Two diaphragm seats 5 are fixed to the lower end of the fixed tube 4, and a U-shaped inner cavity is provided in the middle of the diaphragm seat 5. A diaphragm membrane 7 is fixedly connected to the inner cavity of the diaphragm seat 5 away from the fixed tube 4 at one end. The diaphragm membrane 7 seals the inner cavity of the diaphragm seat 5, and a protective cover 13 is clamped on the outer surface of the end of the diaphragm seat 5 away from the fixed tube 4. Through the setting of the protective cover 13, the protective cover 13 can protect the diaphragm membrane 7, which is convenient for carrying the differential pressure online density meter, and the protective cover 13 can be quickly separated from the diaphragm seat 5, which is convenient for using the differential pressure online density meter.

[0026] The inner cavity of the diaphragm seat 5 is connected to the pressure input end of the pressure transmitter 3 through a connecting tube 11. The inner cavity of the connecting tube 11 is filled with pressure liquid, and the connecting tube 11 is made of a flexible material to facilitate the bending of the connecting tube 11. The connecting tube 11 is located in the fixed tube 4, the rotating tube 8, the fixed block 1 and the bending molding tube 2, which can protect the connecting tube 11 and facilitate the use of the connecting tube 11.

[0027] When the present application is in use, the housing of the pressure transmitter 3 is grounded, and the pressure transmitter 3 adopts a four-digit liquid crystal display, which is intuitive and convenient, and the reading can be displayed after liquid is filled.

[0028] From the above description, it can be seen that when the intelligent differential pressure online density meter is in use, under the action of gravity, the fixed tube 4 can automatically adjust its position until the fixed tube 4 is in a vertical state, ensuring that the two diaphragm membranes 7 are in the same vertical plane, avoiding the measurement error caused by the difference in the manual installation of the fixed block 1, and improving the measurement accuracy.

[0029] The present application is further described below through an embodiment of the present application.

[0030] In this embodiment, the intelligent pressure difference online density meter is applied to the ground grouting station. When the ground grouting station is grouting, the intelligent pressure difference online density meter is used to measure the density of the grouting. During installation, the staff first fixes the fixed block 1 in the tank body 14 for storing the grouting. The staff rotates the ball screw 6. The rotation of the ball screw 6 causes the ball nut 12 to drive the friction ring 10 away from the positioning ring 9 and contact the limit of the rotating tube 8. Under the action of gravity, the position of the fixed tube 4 is automatically adjusted until the fixed tube 4 is in a stable state. The staff rotates the ball screw 6. The rotation of the ball screw 6 causes the ball nut 12 to drive the friction ring 10 close to the positioning ring 9 until the friction ring 10 fits tightly with the positioning ring 9. The positioning structure fixes the position of the rotating tube 8, and at this time, the fixed tube 4 is in a vertical state. The intelligent pressure difference online density meter is installed. After installation, the housing of the intelligent pressure difference online density meter is grounded, and zeroing is adjusted when the tank is empty so that the density value is displayed as 0g / cm 3 , and the staff can adjust the direction of the LCD screen of the pressure transmitter 3 according to the needs to facilitate reading. When the slurry submerges the two diaphragm membranes 7, the intelligent differential pressure online density meter can continuously measure the liquid density online according to the pressure difference at the positions of the two diaphragm membranes 7, and can efficiently monitor the density and quality of the slurry during the grouting process, effectively improve the on-site fire prevention effect, and ensure safe production.

[0031] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An intelligent differential pressure online density meter, comprising a fixed block (1), characterized in that: The top of one end of the inner cavity of the fixed block (1) is connected to a pressure transmitter (3) via a bent shaping tube (2); the middle of the other end of the fixed block (1) is movably connected to a rotating tube (8); the other end of the rotating tube (8) is fixedly connected to a fixed tube (4); and the rotating tube (8) is connected to the fixed block (1) via a positioning structure; two diaphragm seats (5) are fixed at the lower end of the fixed tube (4); the two diaphragm seats (5) are in a vertically distributed state; a diaphragm film (7) is fixed to the outside of the inner cavity of the diaphragm seat (5); the inner cavity of the diaphragm seat (5) is connected to the pressure input end of the pressure transmitter (3) via a connecting tube (11); and the inner cavity of the connecting tube (11) is filled with pressure liquid; The positioning structure comprises a positioning ring (9) fixedly connected to the outer ring of the rotating tube (8) and a friction ring (10) movably sleeved with the outer ring of the rotating tube (8); the friction ring (10) is located between the positioning ring (9) and the fixed block (1); the friction ring (10) and the fixed block (1) are connected via a ball screw (6); and the ball screw (6) and the fixed block (1) are movably connected.

2. The intelligent differential pressure online density meter according to claim 1, characterized in that: The fixed block (1) is a hollow structure, one end of the bending shaping tube (2) away from the pressure transmitter (3) extends into the inner cavity of the fixed block (1), one end of the rotating tube (8) extends into the inner cavity of the fixed block (1), and the other end of the rotating tube (8) extends into the inner cavity of the fixed tube (4).

3. The intelligent differential pressure online density meter according to claim 2, characterized in that: The connecting tube (11) is located inside the fixed tube (4), the rotating tube (8), the fixed block (1) and the bending and shaping tube (2).

4. The intelligent differential pressure online density meter according to claim 1, characterized in that: The casing of the pressure transmitter (3) is grounded.

5. The intelligent differential pressure online density meter according to claim 1, characterized in that: The inner cavity of the diaphragm seat (5) is a U-shaped structure, the diaphragm membrane (7) seals the inner cavity of the diaphragm seat (5), and a protective cover (13) is clamped on the outer surface of the diaphragm seat (5).

6. The intelligent differential pressure online density meter according to claim 1, characterized in that: The outer ring of the ball screw (6) is threadedly connected to a ball nut (12), the ball nut (12) is fixedly connected to a friction ring (10), and the outer surface of the friction ring (10) is fixedly connected to an anti-slip pad.

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