Anti-corrosion diaphragm pressure type liquid level transmitter based on water sealing sleeve

Abstract

The utility model belongs to the technical field of pressure type liquid level transmitters, and particularly relates to an anti-corrosion diaphragm pressure type liquid level transmitter based on a water sealing sleeve, which comprises a flange plate, a diaphragm is fixedly connected to the bottom of the flange plate, a capillary tube is arranged in the flange plate in a communicated manner, a neck bush is fixedly connected to a tube body of the capillary tube, and the neck bush is connected with a water sealing sleeve. The outer portion of the neck bush is slidably sleeved with a water sealing sleeve, a first hoop and a second hoop are clamped to the outer side of an opening of the water sealing sleeve, the positions of the first hoop and the second hoop correspond to the position of the neck bush, and the interior of the first hoop is slidably connected with a limiting block. A water sealing sleeve is additionally arranged outside a flange plate at the tail end of a capillary tube of the pressure type liquid level transmitter, clear water is filled in the water sealing sleeve, and a corrosive medium is prevented from being in contact with the flange plate by utilizing the physical isolation effect of the water sealing sleeve, so that the service life of equipment is remarkably prolonged, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This solution belongs to the field of pressure level transmitters, specifically involving a corrosion-resistant diaphragm pressure level transmitter based on a water-sealed sleeve. Background Technology

[0002] A pressure level transmitter is a device for measuring liquid level. Based on the principle that the static pressure of the measured liquid is proportional to its height, it uses a pressure-sensitive element to collect static pressure and convert it into an electrical signal, which is then corrected and converted into a standard signal for output. It is widely used for measuring the liquid level of various media in industries such as petrochemicals, power, and water supply and drainage.

[0003] A search revealed a utility model patent with authorization announcement number CN213481454U, which discloses a pressure-type liquid level transmitter. The main structural components are assembled using laser welding and threaded connections, resulting in a simple and reliable assembly process. Regarding sealing protection: there are two sealing protection measures between the cable and the cable holder / locking sleeve: a compression-resistant sealing ring and potting compound. There are also two sealing protection measures between the outer shell and the cable holder / pressure-sensing base: a compression-resistant sealing ring and a laser weld.

[0004] In corrosive media environments such as chemical, petroleum, and polysilicon environments, the metal diaphragm of traditional pressure level transmitters is susceptible to corrosion, leading to diaphragm damage, decreased measurement accuracy, or failure. This necessitates frequent shutdowns for replacement, severely impacting production continuity and equipment reliability. Utility Model Content

[0005] The purpose of this solution is to provide a corrosion-resistant diaphragm pressure level transmitter based on a water-sealed sleeve, in order to solve the problem that the metal diaphragm of traditional pressure level transmitters is easily corroded by the medium in corrosive media environments such as chemical, petroleum, and polysilicon, leading to diaphragm damage, decreased measurement accuracy, or failure.

[0006] To achieve the above objectives, this solution provides a corrosion-resistant diaphragm pressure level transmitter based on a water-sealed sleeve, including a flange. A diaphragm is fixedly connected to the bottom of the flange. A capillary tube is internally connected to the flange. An inner liner is fixedly connected to the capillary tube. A water seal sleeve is slidably fitted onto the outside of the inner liner. A clamp first and a clamp second are engaged on the outer side of the opening of the water seal sleeve, and the positions of clamp first and clamp second correspond to the positions of the inner liner. A limit block is slidably connected inside clamp first. A sliding pin is fixedly connected to the limit block. The sliding pin passes through clamp first and is slidably connected to clamp first. A connecting piece is fixedly connected to one end of the sliding pin outside clamp first. A rubber ball is fixedly connected to the connecting piece, and the rubber ball engages with clamp second.

[0007] The principle of this solution is as follows: First, fill the water seal sleeve with clean water. Then, place the water seal sleeve over the outside of the flange, with the opening of the water seal sleeve fitted over the inner liner of the capillary tube. Next, fit clamp one and clamp two over the outside of the opening. Then, use the pull ring to control the connecting piece and the rubber beads on the connecting piece to fasten into clamp two. This secures the opening with clamp one and clamp two, thus fixing the water seal sleeve. This utilizes the physical isolation effect of the water seal sleeve to prevent corrosive media from contacting the flange, significantly extending equipment life and reducing maintenance frequency. The water seal sleeve is highly flexible, adapting to the pressure generated by the liquid level and transmitting it to the diaphragm of the pressure level transmitter.

[0008] The technical advantage of this solution is that by adding a water seal sleeve to the outside of the flange at the capillary end of the pressure level transmitter, and filling the water seal sleeve with clean water, the physical isolation effect of the water seal sleeve prevents corrosive media from contacting the flange, thereby significantly extending the equipment life and reducing the maintenance frequency.

[0009] By adding a U-shaped inner sleeve to the capillary tube, and then fitting the opening of the water seal sleeve onto the inner sleeve, two clamps, namely clamp one and clamp two, are installed outside the opening. Between clamp one and clamp two, a limiting block, sliding pin, connecting piece, rubber ball, and spring are installed. Under the action of the spring, the rubber ball will be engaged into the side of clamp two. In this way, by controlling the engagement and disengagement of the rubber ball and clamp two, the opening of the water seal sleeve can be fixed, thus facilitating the installation and subsequent replacement of the water seal sleeve.

[0010] Furthermore, the inner liner is convex in shape and is made of plastic. By making the inner liner convex in shape, it is easier to fix the opening of the water seal sleeve.

[0011] Furthermore, multiple support rods are fixedly connected to the side of the inner liner, and the ends of the multiple support rods are jointly fixedly connected to a support ring, which abuts against the inner wall of the water seal sleeve. The support rods and support rings provide relative support for the overall shape of the water seal sleeve, preventing it from sagging excessively after being filled with water.

[0012] Furthermore, a sphere is provided at the end of the rubber bead, and the sphere engages with the second clamp. The sphere increases the stability of the engagement between the rubber bead and the second clamp.

[0013] Furthermore, a pull ring is fixedly connected to the connecting piece, and the pull ring and the connecting piece are an integral structure. The pull ring facilitates the lateral pulling of the connecting piece.

[0014] Furthermore, the side of the limiting block is provided with ball bearings, which are slidably connected to the inner surface of the clamp. The ball bearings reduce the relative friction between the limiting block and the clamp.

[0015] Furthermore, a spring is installed inside the clamp, with one end of the spring fixedly connected to the limiting block and the other end fixedly connected to the inner surface of the clamp. The spring allows the reaction force to be applied to the rubber retaining ball via the sliding pin and connecting piece. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A front sectional view;

[0018] Figure 3 This is an embodiment of the present utility model. Figure 1 A schematic diagram of a partial structure;

[0019] Figure 4 This is an embodiment of the present utility model. Figure 1 Top sectional view;

[0020] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged view of point A.

[0021] The following detailed explanation illustrates the specific implementation methods:

[0022] The reference numerals in the accompanying drawings of the instruction manual include: flange 1, diaphragm 2, capillary tube 3, inner liner 4, water seal sleeve 5, support rod 6, support ring 7, clamp one 8, clamp two 9, limit block 10, sliding pin 11, connecting piece 12, rubber ball 13, pull ring 14, ball 15, spring 16. Detailed Implementation

[0023] The basic implementation examples are as follows: Figures 1-5 As shown: A corrosion-resistant diaphragm pressure level transmitter based on a water-sealed sleeve includes a flange 1, a diaphragm 2 fixedly connected to the bottom of the flange 1, a capillary tube 3 connected inside the flange 1, an inner liner 4 fixedly connected to the tube body of the capillary tube 3, and a water seal sleeve 5 slidably sleeved on the outside of the inner liner 4. The water seal sleeve 5 can be made of flexible polymer material (such as polyethylene or fluorinated ethylene propylene copolymer), with a thickness adaptability (0.5-2mm). The inner cavity of the sealing sleeve is filled with water, and its sealing sleeve is highly flexible, which can adapt to the pressure generated by the liquid level and transmit it to the diaphragm 2 of the pressure level transmitter.

[0024] like Figure 4 , Figure 5As shown, clamp 8 and clamp 9 are snapped onto the outer side of the opening of the water seal sleeve 5, and the positions of clamp 8 and clamp 9 correspond to the positions of the inner liner 4. A limit block 10 is slidably connected inside clamp 8, and a ball bearing 15 is provided on the side of the limit block 10. The ball bearing 15 is slidably connected to the inner surface of clamp 8. The ball bearing 15 reduces the relative friction between the limit block 10 and clamp 8. A sliding pin 11 is fixedly connected to the limit block 10, and the sliding pin 11 passes through clamp 8 and is slidably connected to clamp 8. A connecting piece 12 is fixedly connected to one end of the sliding pin 11 outside clamp 8. A rubber ball bearing 13 is fixedly connected to the connecting piece 12, and the rubber ball bearing 13 is snapped onto clamp 9. A ball is provided at the end of the rubber ball bearing 13, and the ball is snapped onto clamp 9. The spherical arrangement increases the stability of the engagement between the rubber ball 13 and the clamp 9. A pull ring 14 is fixedly connected to the connecting piece 12, and the pull ring 14 and the connecting piece 12 are an integral structure. The pull ring 14 facilitates the lateral pulling of the connecting piece 12. A spring 16 is installed inside the clamp 8. One end of the spring 16 is fixedly connected to the limiting block 10, and the other end of the spring 16 is fixedly connected to the inner surface of the clamp 8. The spring 16 allows the reaction force to be applied to the rubber ball 13 through the sliding pin 11 and the connecting piece 12.

[0025] like Figure 4 , Figure 5 As shown, the inner sleeve 4 is convex in shape and made of plastic. The convex shape of the inner sleeve 4 facilitates the fixing of the opening of the water seal sleeve 5. Multiple support rods 6 are fixedly connected to the side of the inner sleeve 4, and the ends of the multiple support rods 6 are jointly fixedly connected to a support ring 7, which abuts against the inner wall of the water seal sleeve 5. The support rods 6 and the support ring 7 provide relative support for the overall shape of the water seal sleeve 5, preventing it from sagging excessively after filling with water.

[0026] The specific implementation process of this utility model is as follows: In use, first, fill the water seal sleeve 5 with clean water, then put the water seal sleeve 5 on the outside of the flange 1, and the sleeve opening of the water seal sleeve 5 is fitted onto the inner liner 4 of the capillary tube 3. Then, put the clamp 1 8 and clamp 2 9 on the outside of the sleeve opening. Then, control the connecting piece 12 and the rubber ball 13 on the connecting piece 12 to be fastened into the clamp 2 9 through the pull ring 14. In this way, the sleeve opening can be fixed by clamp 1 8 and clamp 2 9, thereby completing the fixation of the water seal sleeve 5. In this way, the physical isolation effect of the water seal sleeve 5 can be used to prevent corrosive media from contacting the flange 1, thereby significantly extending the equipment life and reducing the maintenance frequency. The water seal sleeve 5 is highly flexible and can adapt to the pressure generated by the liquid level and transmit it to the diaphragm 2 of the pressure level transmitter.

[0027] This solution adds a water seal sleeve 5 to the outside of the flange 1 at the end of the capillary tube 3 of the pressure level transmitter. The water seal sleeve 5 is filled with clean water. By utilizing the physical isolation effect of the water seal sleeve 5, corrosive media are prevented from contacting the flange 1, thereby significantly extending the equipment life and reducing the maintenance frequency.

[0028] By adding a U-shaped inner sleeve 4 to the capillary tube 3, and then fitting the opening of the water seal sleeve 5 onto the inner sleeve 4, two clamps, namely clamp one 8 and clamp two 9, are installed outside the opening. Between clamp one 8 and clamp two 9, a limiting block 10, a sliding pin 11, a connecting piece 12, a rubber ball 13, and a spring 16 are installed. Under the action of the spring 16, the rubber ball 13 will be inserted into the side of clamp two 9. In this way, by controlling the engagement and disengagement of the rubber ball 13 and clamp two 9, the opening of the water seal sleeve 5 can be fixed, which facilitates the installation of the water seal sleeve 5 and its subsequent replacement.

[0029] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A water-filled diaphragm pressure-type level transmitter based on a corrosion- resistant membrane, comprising a flange, characterized in that: A diaphragm is fixedly connected to the bottom of the flange. A capillary tube is connected inside the flange. An inner liner is fixedly connected to the body of the capillary tube. A water seal sleeve is slidably fitted onto the outside of the inner liner. A clamp first and a clamp second are snapped onto the outside of the opening of the water seal sleeve, and the positions of clamp first and clamp second correspond to the positions of the inner liner. A limit block is slidably connected inside clamp first. A sliding pin is fixedly connected to the limit block. The sliding pin passes through clamp first and is slidably connected to clamp first. A connecting piece is fixedly connected to one end of the sliding pin outside clamp first. A rubber ball is fixedly connected to the connecting piece, and the rubber ball is snapped into clamp second.

2. A water-filled diaphragm pressure level transmitter with corrosion protection according to claim 1, characterized in that: The inner liner is convex in shape and is made of plastic.

3. A water-filled diaphragm pressure level transmitter with corrosion protection according to claim 1, characterized in that: The inner liner is fixedly connected to a plurality of support rods on its side, and the ends of the plurality of support rods are fixedly connected to a support ring, which abuts against the inner wall of the water seal sleeve.

4. A water-filled diaphragm pressure level transmitter with corrosion protection according to claim 1, characterized in that: The end of the rubber bead is provided with a ball, which is engaged with the clamp.

5. A water-filled diaphragm pressure level transmitter with corrosion- resistant membrane according to claim 1, characterized in that: A pull ring is fixedly connected to the connecting piece, and the pull ring and the connecting piece are an integral structure.

6. A water-filled diaphragm pressure level transmitter with corrosion- resistant membrane according to claim 1, characterized in that: The side of the limiting block is provided with a ball bearing, which is slidably connected to the inner surface of the clamp.

7. A water-filled diaphragm pressure-type level transmitter with corrosion- resistant membrane according to claim 1, characterized in that: The clamp is equipped with a spring inside. One end of the spring is fixedly connected to the limiting block, and the other end of the spring is fixedly connected to the inner surface of the clamp.

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