Self-cleaning pressure lead structure and pressure transmitter

Abstract

The application provides a self-cleaning pressure leading pipe structure and a pressure transmitter, and belongs to the technical field of fluid pressure monitoring. The self-cleaning pressure leading pipe structure comprises a pressure leading pipe component, a main pipe component, a pressure transmitter module, a self-cleaning assembly, a starting pushing component, a buckle component and a solenoid valve. The pressure leading pipe component comprises an S-shaped pressure leading pipe, a flared pipe part and a cleaning pipe part to form an S-shaped channel. The inner wall of the S-shaped channel is provided with an accumulation groove for improving the cleaning efficiency. The cleaning ball and the bristles in the self-cleaning assembly move in the channel under the pressure of the fluid, which can effectively remove the impurities attached to the inner wall of the S-shaped elbow pipe. The starting pushing component, the buckle component and the self-cleaning assembly are matched, which can not only realize reliable sealing in the monitoring state and ensure the monitoring accuracy, but also realize the rapid switching of the cleaning state. The problems of measurement distortion and blockage caused by impurity deposition in the traditional pressure leading pipe are solved, the rapid self-cleaning without shutdown is realized, and the accuracy and reliability of pressure monitoring are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of fluid pressure monitoring technology, and in particular to a self-cleaning pressure tap structure and a pressure transmitter. Background Technology

[0002] Pressure transmitters, as a core industrial process control instrument, are widely used in many fields such as petroleum, chemical, metallurgy, and power. Their function is to accurately and continuously monitor the pressure value of fluids (liquid, gas, or steam) in pipelines or containers and convert this physical quantity into a standard signal output, providing crucial data for the automated control of production processes and equipment protection.

[0003] In actual operation, the measured medium is often not a pure substance, but may contain various solid particles, oil, crystals, polymers, or other viscous deposits. These impurities will enter the pressure transmitter's measurement system along with the fluid through the pressure tapping tube. Since the pressure tapping tube is usually a long and thin pipe structure, especially pressure tapping tubes with bends designed to avoid equipment or adapt to installation space, impurities are very likely to deposit and adhere at bends, diameter changes, or rough inner walls, eventually causing blockages or reducing the flow cross-section.

[0004] In existing technologies, the cleaning and maintenance of pressure tapping pipes mainly rely on manual periodic disassembly and flushing or backflushing using external equipment. These methods have significant drawbacks. First, the disassembly process is cumbersome, requiring downtime and affecting production continuity, and may also introduce leakage risks due to damage to seals caused by frequent disassembly and assembly. Second, conventional backflushing cleaning has limited effectiveness on pressure tapping pipes with complex, curved structures, and it is difficult to completely remove stubborn impurities adhering to the inner wall of the bend. Furthermore, the cleaning cycle is long, making it impossible to achieve rapid and timely cleaning during monitoring.

[0005] The accumulation of these impurities and inadequate cleaning can lead to measurement distortion and decreased accuracy of pressure transmitters, response delays, and even damage. Summary of the Invention

[0006] One of the objectives of this invention is to provide a self-cleaning pressure tap structure to solve the aforementioned shortcomings in pressure tap cleaning. By setting a self-cleaning component in conjunction with an S-shaped pressure tap, along with a self-cleaning component, a starting push component, and a snap-fit ​​component, rapid self-cleaning without stopping the machine can be achieved, ensuring the continuity and accuracy of pressure monitoring.

[0007] The objective of this invention is achieved through the following technical solution: a self-cleaning pressure tube structure, comprising a pressure tube component self-cleaning assembly, a starting pushing component, and a snap-fit ​​component. The pressure tube component includes an S-shaped pressure tube, the self-cleaning assembly includes a side cover, an outer main shell, a cleaning ball, and cleaning bristles, the starting pushing component includes an inner pushing sleeve, and the snap-fit ​​component includes an active inclined platform.

[0008] The top of the S-shaped pressure tube is fixed with a flared tube section, and the bottom is fixed with a cleaning tube section. The S-shaped pressure tube, the flared tube section, and the cleaning tube section together form an S-shaped channel. The side cover is threadedly fixed to the cleaning tube section. One end of the outer main shell is fixed to the outer surface of the side cover. The cleaning ball is located inside the channel formed by the S-shaped pressure tube, the flared tube section, and the cleaning tube section. A roller is elastically screwed into the outer main shell. A pull rope is wound around the outer ring of the roller. The first end of the pull rope passes through the side cover and is fixed to the cleaning ball.

[0009] Cleaning bristles are planted in the spherical surface of the cleaning sphere near the side cover;

[0010] The side cover has a sliding push column that is elastically connected to the side facing the cleaning tube. The inner push sleeve is fixed to the inner end of the push column, and the active ramp is fixed to the outer end of the push column. The bottom wall of the outer main shell has a locking ramp that is elastically connected to the active ramp.

[0011] The process of using the technical solution of the present invention is as follows:

[0012] The pressure transmitter is installed at one end of the flared pipe section, and the end of the S-shaped pressure tap near the cleaning pipe section is connected to the main pipe being monitored.

[0013] In the monitoring state, one end of the flared tube is closed, the pusher slide and the inner pusher sleeve are in the retracted limit position, and the cleaning ball is also in the retracted state under the action of the roller's own elastic rotation force. The inner pusher sleeve can form a sealing pressure with the inner side of the side cover in the retracted limit position, and the cleaning ball can also form a sealing pressure with the inner pusher sleeve in the retracted state.

[0014] Furthermore, when the push slide is in the retracted limit position, the locking ramp pops up and engages with the active ramp, securely locking the push slide and the inner push sleeve in the retracted limit position.

[0015] This allows the channel consisting of the S-shaped pressure tap, the flared tube, and the cleaning tube to be sealed while under monitoring conditions.

[0016] In self-cleaning mode, one end of the flared tube needs to be opened, and the locking ramp needs to be moved away from the active ramp to disengage the locking ramp from the active ramp.

[0017] Under the action of the elastic force of the pusher, the inner pusher sleeve and the cleaning ball, which are in the initial retracted position, will be pushed away from the side cover. Since there is a certain gap between the cleaning ball and the inner wall of the channel formed by the S-shaped pressure tube, the flared tube and the cleaning tube, and the elastic force of the pusher itself is sufficient to overcome the pressure of the fluid on the cleaning ball and the tension formed by the elastic rotation force of the roller itself on the cleaning ball, the cleaning ball is pushed from the side near the side cover towards the fluid inlet of the S-shaped pressure tube, that is, from one side of the fluid inlet of the S-shaped pressure tube to the other side of the inlet, and the cleaning ball is able to move to the other side of the fluid inlet of the S-shaped pressure tube.

[0018] Subsequently, under the pressure of the fluid itself, the cleaning ball can be pushed to move inside the channel formed by the S-shaped pressure tube, the flared tube, and the cleaning tube. The pressure of the fluid itself is much greater than the elastic rotation force of the roller, which can push the roller towards one end of the flared tube. During the movement of the cleaning ball, the frictional contact between the cleaning bristles and the inner wall of the channel formed by the S-shaped pressure tube, the flared tube, and the cleaning tube can quickly remove the impurities and deposits adhering to the inner wall. As the fluid flows out of the flared tube, the impurities are discharged outward.

[0019] After a single cleaning is completed, it can be determined whether another cleaning is needed based on the degree of impurities removed. However, regardless of whether it is needed, the cleaning ball must be moved to the initial retraction position. At this time, first close the fluid inlet channel of the S-shaped pressure tube, so that the fluid in the channel composed of the S-shaped pressure tube, the flared tube, and the cleaning tube loses pressure. Then rotate the roller, and with the pulling force formed by the elastic rotation force of the roller itself, the cleaning ball can be quickly moved to the starting position.

[0020] Furthermore, when the cleaning ball moves to contact the popped inner push sleeve, the torque of the rotating roller needs to overcome the outward elastic force of the push slide itself until the active ramp is moved to the position where it is safely locked by the locking ramp. At this time, the cleaning ball, the inner push sleeve and the push slide all return to the retracted limit position.

[0021] If cleaning is required again, repeat the above steps. After cleaning, close one end of the flared tube and open the fluid inlet channel of the S-shaped pressure tap to return to the state of monitoring the fluid pressure in the main pipe using a pressure transmitter.

[0022] Another object of the present invention is to provide a pressure transmitter, including a pressure transmitter module. The pressure transmitter module includes a fastening base, an opening and closing cover, a locking bolt, a locking nut, a pressure transmitter body, a sealing sleeve and a sealing sleeve groove. An opening and closing rotating seat is fixedly connected to the top end of the outlet of the flared tube. An opening and closing rotating shaft is horizontally installed and fixed in the opening and closing rotating seat. The fastening base is fixedly connected to the bottom end of the outlet of the flared tube. The sealing sleeve groove is formed on the outlet end face of the flared tube.

[0023] An opening and closing rotating arm is fixed to the top of the outer wall of the opening and closing cover. The opening and closing rotating arm is screwed to the opening and closing rotating shaft. A snap-shell card seat is fixedly connected to the bottom of the outer wall of the opening and closing cover. The sealing rubber sleeve is fastened to the inner opening of the opening and closing cover. After the opening and closing cover is closed, the sealing rubber sleeve is sealed and engaged in the sealing rubber sleeve groove. After the snap-shell card seat is aligned with the snap-fit ​​seat, the locking bolt passes through the through hole opened in the snap-shell card seat and the snap-fit ​​seat and forms a threaded connection with the locking nut, which can form a fastening between the opening and closing cover and the flared tube.

[0024] The top wall of the opening and closing cover is fixedly connected to a mounting pipe seat, and the inlet position of the pressure transmitter body is threadedly connected to the mounting pipe seat;

[0025] An inner elastic abutment with a corner structure is also installed and fixed in the middle of the inner side of the opening and closing cover. After the opening and closing cover is closed, the inner elastic abutment just elastically abuts against the inner wall of the S-shaped pressure tube. And when the opening and closing cover is opened to a certain angle, the cleaning ball moves to the position of the flared tube under the action of the fluid and just abuts against the inner elastic abutment.

[0026] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0027] (1) Since the S-shaped pressure tapping tube, the flared tube section and the cleaning tube section together form an S-shaped channel, this curved structure increases the length and complexity of the cleaning path, so that the cleaning bristles can more comprehensively rub against the inner wall of the channel during the movement of the cleaning ball, effectively removing the adhering impurities and deposits, preventing blockage and measurement errors; at the same time, the S-shaped channel plays a buffering and deceleration role, reducing the direct impact of impurities in the measured fluid on the pressure transmitter, improving monitoring accuracy and equipment life;

[0028] (2) When the cleaning ball moves inside the S-shaped channel, it quickly removes impurities through frictional contact between the cleaning bristles and the inner wall of the channel; the combination of the roller and the pull rope utilizes the elastic rotation force of the roller itself, i.e. elastic torque, so that the cleaning ball can quickly return to its initial position after cleaning, simplifying the cleaning process and reducing maintenance costs.

[0029] (3) At the same time, the flared tube is designed as a flared structure, which facilitates the discharge of fluid carrying impurities when the cleaning ball moves to the position of the flared tube.

[0030] (4) In the monitoring state, when the pusher slide and the inner pusher sleeve are in the retracted limit position, a reliable lock is formed by the locking and engaging of the locking ramp and the active ramp to prevent accidental movement; at the same time, multiple seals are formed between the inner pusher sleeve and the inner side of the side cover, and between the cleaning ball and the inner pusher sleeve, which effectively prevents pressure leakage and ensures accurate monitoring of the pressure transmitter; in the cleaning state, simply move the locking ramp to release the pusher slide, and the cleaning ball will be automatically pushed into the cleaning position under the action of elasticity, which is simple and safe to operate;

[0031] (5) By controlling the opening and closing of the fluid inlet and the flared tube of the S-shaped pressure tube, the monitoring and cleaning states can be easily switched; the movement and retraction mechanism of the cleaning ball allows for multiple cleanings according to the degree of impurities, ensuring the cleaning efficiency of the inner wall of the channel and improving the adaptability and durability of the system. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is an exploded structural diagram of the pressure-inducing pipe component and the main pipe component of the present invention;

[0035] Figure 3 This is a schematic diagram of the pressure-feeding tube component of the present invention;

[0036] Figure 4 This is a cross-sectional schematic diagram of the pressure-feeding tube component of the present invention;

[0037] Figure 5 This is a schematic diagram of the pressure transmitter module of the present invention;

[0038] Figure 6 This is a cross-sectional schematic diagram of the pressure transmitter module of the present invention;

[0039] Figure 7 This is a schematic diagram of the installation structure of the self-cleaning component of the present invention;

[0040] Figure 8 This is a schematic diagram of the structure of the pull rope part of the present invention;

[0041] Figure 9 This is a front view of the roller and cleaning ball parts of the present invention;

[0042] Figure 10 This is an exploded view of the roller disk of the present invention from a first perspective;

[0043] Figure 11 This is a second-view exploded structural diagram of the roller disk of the present invention;

[0044] Figure 12 This is a first-view structural schematic diagram of the initial pushing component of the present invention;

[0045] Figure 13 This is a structural schematic diagram of the starting pushing component of the present invention from a second perspective;

[0046] Figure 14 This is a cross-sectional schematic diagram of the initial pushing component portion of the present invention;

[0047] Figure 15 This is a schematic diagram of the mating structure of the initial pushing component and the snap-fit ​​component of the present invention;

[0048] Figure 16 This is a structural schematic diagram of the snap-fit ​​component of the present invention;

[0049] Figure 17 This is a schematic diagram of the structure of the cleaning ball and the internal elastic arm of the present invention.

[0050] Figure label:

[0051] 1. Pressure tapping tube assembly; 2. Main pipe assembly; 3. Pressure transmitter module; 4. Self-cleaning assembly; 5. Starting push assembly; 6. Snap-fit ​​assembly; 7. Solenoid valve; 101. S-shaped pressure tapping tube; 102. Inlet pipe; 103. Flared pipe section; 104. Cleaning pipe section; 105. Gathering tank; 201. Main pipe; 202. Side connection pipe seat; 301. Opening and closing rotating seat; 302. Opening and closing rotating shaft; 303. Snap-fit ​​fixing seat; 304. Opening and closing cover; 305. Opening and closing rotating arm; 306. Snap-fit ​​housing seat; 307. Locking bolt; 308. Locking nut; 309. Mounting pipe seat; 310. Pressure transmitter body; 311. Sealing sleeve; 312. Sealing sleeve groove; 313. Inner elastic arm; 401. Side cover; 402. Outer Main shell; 403, cover; 404, cleaning ball; 405, cleaning bristles; 406, roller; 407, pull rope; 408, guide seat; 409, pull rope slide; 410, coil spring; 411, return sealing groove; 412, retracting and releasing shaft; 413, inner rotating seat; 414, outer rotating seat; 415, hexagonal column; 416, coil spring placement groove; 501, push slide; 502, push slide column; 503, connecting seat; 504, inner locking seat; 505, compression spring; 506, locking column; 507, inner push sleeve; 508, return sealing ring; 509, spherical groove; 601, active inclined platform; 602, locking slide cylinder; 603, locking inclined platform; 604, bottom cover; 605, top spring; 606, side sliding groove; 607, release rod. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] like Figures 1-17As shown, a self-cleaning pressure tap structure and pressure transmitter are disclosed. In the pressure tap component 1, an S-shaped pressure tap 101 has a flared tube portion 103 fixed to its top end and a cleaning tube portion 104 fixed to its bottom end. The S-shaped pressure tap 101, flared tube portion 103, and cleaning tube portion 104 together form an S-shaped channel. A side cover 401 is threadedly connected to the cleaning tube portion 104. One end of the outer main housing 402 is fixed to the outer surface of the side cover 401. A cleaning ball 404 is located within the S-shaped pressure tap 101. 1. The flared tube section 103 and the cleaning tube section 104 form the interior of the channel, and there is a certain gap between them and the inner wall of the channel. The outer main shell 402 is elastically screwed with a roller 406. A pull rope 407 is wound in the outer ring of the roller 406. The first end of the pull rope 407 passes through the side cover 401 and is fixed to the cleaning ball 404. The end is fixed to the outer ring of the roller 406. Under the action of the elastic screwing force of the roller 406 itself, the pull rope 407 is in a taut state.

[0055] Cleaning bristles 405 are planted in the spherical surface of the cleaning ball 404 near the side cover 401. The cleaning bristles 405 are in frictional contact with the inner wall of the channel composed of the S-shaped pressure tube 101, the flared tube 103 and the cleaning tube 104.

[0056] The main body of the side cover 401 is elastically slidably connected to the side facing the cleaning tube section 104 with a push slide column 502. The inner push sleeve 507 is fixedly connected to the inner end of the push slide column 502. The active ramp 601 is fixedly connected to the outer end of the push slide column 502. The bottom wall of the outer main shell 402 is elastically slidably connected to the active ramp 601 with a locking ramp 603. During the sliding of the push slide column 502, the active ramp 601 can form an elastic sliding tangential engagement with the locking ramp 603. When the push slide column 502 slides back to the limit position, the locking ramp 603 elastically engages with one side of the active ramp 601 to safely limit the limit position of the push slide column 502 and the inner push sleeve 507.

[0057] The working principle is as follows:

[0058] The pressure transmitter is installed at one end of the flared pipe section 103, and the end of the S-shaped pressure tap 101 near the cleaning pipe section 104 is connected to the main pipe being monitored.

[0059] In the monitoring state, one end of the flared tube 103 is in a closed state, the pusher 502 and the inner pusher sleeve 507 are in the retracted limit position, and the cleaning ball 404 is also in a retracted state under the action of the elastic screwing force of the roller 406 itself. The inner pusher sleeve 507 can form a sealing pressure with the inner side of the side cover 401 in the retracted limit position. The cleaning ball 404 can also form a sealing pressure with the inner pusher sleeve 507 in the retracted state.

[0060] Furthermore, when the pusher slide 502 is in the retracted limit position, the locking ramp 603 pops up and engages with the active ramp 601, securely locking the pusher slide 502 and the inner pusher sleeve 507 in the retracted limit position.

[0061] Since the cleaning ball 404 is located inside the channel formed by the S-shaped pressure tube 101, the flared tube 103 and the cleaning tube 104, under the dual action of the fluid pressure in the main tube and the elastic rotation force of the roller 406, the cleaning ball 404 will be squeezed inward towards the inner push sleeve 507, so that the cleaning ball 404 and the inner push sleeve 507 can form a more secure seal.

[0062] This allows the channel consisting of the S-shaped pressure tapping tube 101, the flared tube section 103, and the cleaning tube section 104 to be sealed during monitoring, ensuring that the pressure will not leak without cause and providing conditions for the accurate monitoring of the pressure transmitter.

[0063] In the self-cleaning state, one end of the flared tube 103 needs to be opened, and the locking ramp 603 is moved away from the active ramp 601 so that the locking ramp 603 is disengaged from the active ramp 601.

[0064] Under the action of the elastic force of the pusher 502, the inner pusher sleeve 507 and the cleaning ball 404, which are in the initial retracted position, will be pushed away from the side cover 401. Since there is a certain gap between the cleaning ball 404 and the inner wall of the channel formed by the S-shaped pressure tube 101, the flared tube 103 and the cleaning tube 104, and the elastic force of the pusher 502 is sufficient to overcome the pressure of the fluid on the cleaning ball 404 and the tension formed by the elastic screwing force of the roller 406 on the cleaning ball 404, the cleaning ball 404 is pushed from the side near the side cover 401 toward the fluid inlet of the S-shaped pressure tube 101, that is, from one side of the fluid inlet of the S-shaped pressure tube 101 to the other side of the inlet, and the cleaning ball 404 is able to move to the other side of the fluid inlet of the S-shaped pressure tube 101.

[0065] Subsequently, under the pressure of the fluid itself, the cleaning ball 404 can be pushed to move inside the channel formed by the S-shaped pressure tube 101, the flared tube 103 and the cleaning tube 104. The pressure of the fluid itself is much greater than the elastic rotation force of the roller 406 itself, which can push the roller 406 to one end of the flared tube 103. During the movement of the cleaning ball 404, the frictional contact formed between the cleaning bristles 405 and the inner wall of the channel formed by the S-shaped pressure tube 101, the flared tube 103 and the cleaning tube 104 can quickly remove the impurities and deposits adhering to the inner wall. As the fluid flows out of the flared tube 103, the impurities are discharged outward.

[0066] The fluid containing impurities flowing out of the flared pipe section 103 needs to be collected through a special collection container and treated by a corresponding waste liquid treatment system to avoid direct discharge and pollution.

[0067] After a single cleaning is completed, it can be determined whether another cleaning is needed based on the degree of impurities removed. However, regardless of whether it is needed, the cleaning ball 404 must be moved to the initial retraction position. At this time, the fluid inlet channel of the S-shaped pressure tube 101 is closed first, so that the fluid in the channel composed of the S-shaped pressure tube 101, the flared tube 103 and the cleaning tube 104 loses pressure. Then, the roller 406 is rotated. With the pull force formed by the elastic rotation force of the roller 406 itself, the cleaning ball 404 can be quickly moved to the starting position.

[0068] Furthermore, when the cleaning ball 404 moves to contact the popped inner push sleeve 507, the torque of the rotating roller 406 needs to overcome the outward elastic force of the push slide 502 itself until the active ramp 601 is moved to the position where it is safely locked by the locking ramp 603. At this time, the cleaning ball 404, the inner push sleeve 507 and the push slide 502 all return to their retracted limit positions.

[0069] If you need to clean it again, simply repeat the above steps.

[0070] Once cleaning is complete, close one end of the flared tube 103 and open the fluid inlet channel of the S-shaped pressure tap 101 to return to the state of monitoring the fluid pressure in the main pipe using a pressure transmitter.

[0071] The specific structures of pressure tap component 1 and main pipe component 2 are as follows: Figure 2 , Figure 3 and Figure 4 As shown, the liquid inlet pipe 102 is connected to the bottom end of the side wall of the S-shaped pressure tapping pipe 101 near the cleaning pipe section 104. The inner wall of the channel formed by the cleaning pipe section 104, the S-shaped pressure tapping pipe 101, and the flared pipe section 103 is provided with a collection groove 105. This allows the cleaning bristles 405 to produce a slight bending-rebound action when they pass the edge of the collection groove 105. This action not only enhances the scraping effect of the cleaning bristles 405 on the inner wall of the channel, but also shakes off the impurities adhering to the cleaning bristles 405. Thus, the cleaning bristles 405 not only clean the inner wall of the channel, but also achieve self-cleaning of the cleaning bristles 405.

[0072] The main pipe 201 serves as the main channel for transporting fluid. The side connecting pipe seat 202 is connected to the side wall of the main pipe 201. The inlet position of the liquid inlet pipe 102 is threadedly fixed to the side connecting pipe seat 202, allowing the measured fluid to enter the S-shaped pressure tapping pipe 101 from the main pipe 201. There is sufficient space between the cleaning pipe section 104 and the liquid inlet pipe 102 to accommodate the inner push sleeve 507 and the cleaning ball 404, so that when the inner push sleeve 507 and the cleaning ball 404 are in the retracted limit position, the flow of fluid from the liquid inlet pipe 102 to the S-shaped pressure tapping pipe 101 will not be affected.

[0073] The inlet pipe 102 is also equipped with a solenoid valve 7 connected to an external electrical control system, which is used to automatically switch the fluid in the main pipe 201 on and off with the channel in the pressure tapping pipe component 1.

[0074] The specific structures of the self-cleaning component 4, the initial pushing component 5, and the snap-fit ​​component 6 are as follows: Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 As shown, the cover 403 is sealed to the outer main shell 402. A pull rope slide 409 is fixedly installed in the middle of the main body of the side cover 401. The pull rope 407 is slidably connected in the pull rope slide 409. A guide seat 408 is fixedly connected to the inner wall of the outer main shell 402. The pull rope 407 overlaps in the groove of the guide seat 408, which can guide the pull rope 407 to be pulled up and down, and prevent the pull rope 407 from interfering with the starting push member 5.

[0075] An inner rotating seat 413 is fixedly installed on the inner side of the outer main shell 402. An outer rotating seat 414 is fixedly installed on the inner side of the cover 403 at the position directly opposite to the inner rotating seat 413. A take-up and release rotating shaft 412 is fixed horizontally at the center of the roller 406. The inner end of the take-up and release rotating shaft 412 is screwed to the inner rotating seat 413, and the outer end is screwed to the outer rotating seat 414.

[0076] Furthermore, a hexagonal column 415 is fixed at the outer end of the outer rotating seat 414 of the rotating shaft 412, which is used to rotate the roller 406 using standard tools.

[0077] A coil spring placement groove 416 is provided on one end face of the roller disc 406 near the outer main shell 402. The coil spring 410 is located in the coil spring placement groove 416, and the outer end of the coil spring placement groove 416 is locked with the inner ring of the coil spring placement groove 416 and the outer end is locked with the inner rotating seat 413, which can generate the rotational torque of the roller disc 406 on the tensioning rope 407.

[0078] The return sealing groove 411 is opened on the inner side of the side cover 401 and is coaxially arranged with the inner push sleeve 507;

[0079] The push slide 501 is symmetrically fixedly installed on the end face of the side cover 401 with the pull rope slide 409 as the center. The push slides 502 are arranged in pairs. The push slides 502 on the same side are slidably connected to the push slide 501. The connecting seat 503 is fixedly connected to the outer end of the push slide 502 and is always located in the sealed cavity formed by the outer main shell 402 and the cover 403.

[0080] An inner card seat 504 is fixedly connected to one side of the bottom of the inner wall of the outer main shell 402. An array of compression springs 505 is provided between the inner card seat 504 and the connecting seat 503. An array of locking posts 506 are fixed to the side of the inner card seat 504 and the side of the connecting seat 503. The two ends of the compression springs 505 are respectively locked in the opposite locking posts 506.

[0081] The inner push sleeve 507 is fixed with a return sealing ring 508 at the end away from the cleaning ball 404, and a spherical groove 509 is provided at the end close to the cleaning ball 404;

[0082] Furthermore, the annular contour of the return sealing groove 411 can enclose the push slide 501 within it;

[0083] This ensures that after the cleaning ball 404 and the inner push sleeve 507 are retracted into place, the return sealing ring 508 is elastically and securely engaged in the return sealing groove 411, and the cleaning ball 404 is elastically fitted in the spherical groove 509, thus forming a situation where, under monitoring conditions, fluid will not leak into the cavity composed of the outer main shell 402 and the cover 403.

[0084] Even if there is a slight risk of leakage due to long-term use at the sliding connection positions of the pull rope 407 and the pull rope slide 409, and the sliding connection positions of the push slide 502 and the push slide 501, this risk will be eliminated by the sealing effect of the cleaning ball 404 and the spherical groove 509 formed by the cleaning ball 404 and the inner push sleeve 507 retracting into place, as well as the sealing effect formed by the return sealing ring 508 and the return sealing groove 411, when the monitoring state is maintained.

[0085] The active ramp 601 is fixedly connected to the bottom of the connecting seat 503. The bottom wall of the outer main shell 402 is fixedly installed with a locking slide 602. The locking ramp 603 is slidably connected inside the locking slide 602 and will not come out upward. The bottom cover 604 is attached to the bottom of the locking slide 602. One end of the top spring 605 is locked to the top of the bottom cover 604 and the other end is locked to the bottom of the locking ramp 603, which can form an elastic thrust of the locking ramp 603 toward the active ramp 601.

[0086] A side sliding groove 606 is provided in the side wall of the locking slide cylinder 602, and a release rod 607 is fixed on one side of the bottom of the locking inclined platform 603. The release rod 607 is slidably connected in the side sliding groove 606.

[0087] When it is necessary to release the push slide 502 and the inner push sleeve 507, the spring force of the top spring 605 is overcome, and the release rod 607 is moved away from the active ramp 601. This allows the locking ramp 603 to move away from the active ramp 601. After the locking ramp 603 disengages from the active ramp 601, the inner push sleeve 507 can push the cleaning ball 404 out from the starting position under the action of the spring force of the compression spring 505.

[0088] Furthermore, an electric cylinder can be installed between the bottom cover 604 and the release rod 607, so that the main body of the electric cylinder is fixed to the bottom cover 604 and the telescopic rod is fixed to the release rod 607, thereby forming an automatic control of the movement of the release rod 607.

[0089] The specific structure of a pressure transmitter that includes the above-mentioned structure is as follows: Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, an opening and closing screw seat 301 is fixedly connected to the top of the outlet of the flared tube section 103. An opening and closing screw shaft 302 is horizontally installed and fixed in the opening and closing screw seat 301. A fastening seat 303 is fixedly connected to the bottom of the outlet of the flared tube section 103.

[0090] The sealing groove 312 is formed on the outlet end face of the flared tube section 103;

[0091] An opening and closing rotating arm 305 is fixed to the top of the outer wall of the opening and closing cover 304. The opening and closing rotating arm 305 is screwed to the opening and closing rotating shaft 302. A snap-shell holder 306 is fixedly connected to the bottom of the outer wall of the opening and closing cover 304. A sealing sleeve 311 is fastened to the inner opening of the opening and closing cover 304, so that after the opening and closing cover 304 is closed, the sealing sleeve 311 is sealed and fastened in the sealing sleeve groove 312. After the snap-shell holder 306 is aligned with the fastening seat 303, the locking bolt 307 passes through the through hole opened in the snap-shell holder 306 and the fastening seat 303 and forms a threaded connection with the locking nut 308, which can form a fastening between the opening and closing cover 304 and the flared tube 103.

[0092] The top wall of the opening and closing cover 304 is fixedly connected to the mounting pipe seat 309. The inlet position of the pressure transmitter body 310 is threadedly connected to the mounting pipe seat 309, and the sensing element of the pressure transmitter body 310 extends from the mounting pipe seat 309 into the inner cavity of the opening and closing cover 304, thereby enabling the monitoring of the fluid pressure introduced by the pressure tapping pipe component 1. The sensing element converts pressure values ​​such as deformation or displacement into standard electrical signals and outputs them to the external electrical control system.

[0093] An inner elastic abutment arm 313 with a corner structure is also installed and fixed in the middle of the inner side of the opening and closing cover 304. After the opening and closing cover 304 is closed in place, the inner elastic abutment arm 313 just elastically abuts against the inner wall of the S-shaped pressure tube 101. This allows the opening and closing cover 304 to be subjected to an elastic thrust in the opening direction after it is tightened by the locking bolt 307 and the locking nut 308. However, since the locking bolt 307 and the locking nut 308 are tightened between the snap-shell card seat 306 and the snap-fit ​​seat 303, this elastic thrust will not only not cause adverse effects, but also prevent the locking nut 308 and the locking bolt 307 from loosening, thereby improving the safety effect of closing the opening and closing cover 304 to a certain extent.

[0094] Furthermore, when the opening cover 304 is opened to a certain angle, the cleaning ball 404 moves to the position of the flared tube 103 under the action of the fluid, and then it can just abut against the inner elastic arm 313. This ensures that the cleaning ball 404 will not come out of the flared tube 103 when impurities are discharged by the impact of the fluid, and makes it easy to retract the cleaning ball 404 from the starting position.

[0095] As a supplement to common knowledge in the art, all connection parts involved in this device, such as threaded connections, screw connections, sliding connections, and cap connections, are equipped with sealing elements such as sealing rings or sealing gaskets to ensure reliable sealing at the connection points. At the same time, given the corrosiveness of the fluids being measured in the chemical industry, the main pressure-bearing and flow-through components must be made of corrosion-resistant materials or undergo surface anti-corrosion and anti-rust treatment to meet the corrosion resistance requirements of actual working conditions.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-cleaning pressure tapping tube structure, comprising a pressure tapping tube component (1), characterized in that: It also includes a self-cleaning component (4), an initiating push component (5), and a snap-fit ​​component (6); The pressure tube component (1) includes an S-shaped pressure tube (101), the self-cleaning component (4) includes a side cover (401), an outer main shell (402), a cleaning ball (404) and cleaning bristles (405), the starting push component (5) includes an inner push sleeve (507), and the snap-fit ​​component (6) includes an active ramp (601). The top end of the S-shaped pressure tube (101) is fixed with a flared tube section (103), and the bottom end is fixed with a cleaning tube section (104). The side cover (401) is fixed to the cleaning tube section (104). One end of the outer main shell (402) is fixed to the outer side of the side cover (401). The cleaning ball (404) is located inside the channel formed by the S-shaped pressure tube (101), the flared tube section (103) and the cleaning tube section (104). The outer main shell (402) is elastically screwed with a roller disc (406). A pull rope (407) is wound in the outer ring of the roller disc (406). The first end of the pull rope (407) passes through the side cover (401) and is fixed to the cleaning ball (404). Cleaning bristles (405) are planted in the spherical surface of the cleaning sphere (404) near the side cover (401). A pusher slide (502) is elastically slidably connected to the side of the main body of the side cover (401) facing the cleaning tube (104). An inner pusher sleeve (507) is fixed to the inner end of the pusher slide (502). An active ramp (601) is fixed to the outer end of the pusher slide (502). A locking ramp (603) is elastically slidably connected to the bottom wall of the outer main shell (402) facing the active ramp (601).

2. The self-cleaning pressure tap structure according to claim 1, characterized in that: The pressure tapping tube component (1) also includes an inlet pipe (102), which is connected to the bottom end of the side wall of the S-shaped pressure tapping tube (101). The inner wall of the channel composed of the cleaning tube section (104), the S-shaped pressure tapping tube (101) and the flared tube section (103) is provided with a collection groove (105).

3. The self-cleaning pressure tap structure according to claim 2, characterized in that: The inlet of the liquid inlet pipe (102) is provided with a main pipe component (2), which includes a main pipe (201) and a side connection pipe seat (202). The side connection pipe seat (202) is connected to the side wall of the main pipe (201). The inlet of the liquid inlet pipe (102) is fixedly connected to the side connection pipe seat (202). A solenoid valve (7) is also installed in the liquid inlet pipe (102).

4. A self-cleaning pressure tap structure according to claim 1, 2, or 3, characterized in that: The self-cleaning component (4) also includes a cover (403), a coil spring (410), and a return sealing groove (411). The cover (403) is sealed to the outer main shell (402). A pull rope slide (409) is fixedly installed in the middle of the main body of the side cover (401). The pull rope (407) is slidably connected in the pull rope slide (409). A guide seat (408) is fixedly connected to the inner wall of the outer main shell (402). The pull rope (407) overlaps in the groove of the guide seat (408). An inner rotating seat (413) is fixedly installed on the inner side of the outer main shell (402). An outer rotating seat (414) is fixedly installed on the inner side of the cover (403). (406) has a retractable rotating shaft (412) fixed at its center. The inner end of the retractable rotating shaft (412) is screwed to the inner rotating seat (413), and the outer end is screwed to the outer rotating seat (414). A hexagonal column (415) is fixed at the outer end of the retractable rotating shaft (412) that is screwed out of the outer rotating seat (414). A coil spring placement groove (416) is provided on one side end face of the roller (406). The coil spring (410) is located in the coil spring placement groove (416). The outer end of the coil spring placement groove (416) is locked to the inner ring of the coil spring placement groove (416), and the outer end is locked to the inner rotating seat (413). The return sealing groove (411) is opened on the inner side of the side cover (401).

5. A self-cleaning pressure tap structure according to claim 1, 2 or 3, characterized in that: The starting push component (5) also includes a push slide (501) and a connecting seat (503). The push slide (501) is symmetrically fixedly installed on the end face of the side cover (401). The push slide (502) on the same side is slidably connected to the push slide (501). The connecting seat (503) is fixedly connected to the outer end of the push slide (502). An inner retainer (504) is fixedly connected to one side of the bottom of the inner wall of the outer main shell (402). An array of compression springs (505) is provided between the connecting seat (503) and the connecting seat (503). An array of locking pins (506) are fixed on the side of the inner locking seat (504) and the side of the connecting seat (503). The two ends of the compression springs (505) are respectively locked in the opposite locking pins (506). A return sealing ring (508) is fixed on the end of the inner push sleeve (507) away from the cleaning ball (404), and a spherical groove (509) is opened on the end close to the cleaning ball (404).

6. A self-cleaning pressure tap structure according to claim 1, 2 or 3, characterized in that: The snap-fit ​​component (6) also includes a bottom cover (604) and a top spring (605). The active ramp (601) is fixedly connected to the bottom end of the connecting seat (503). The bottom wall of the outer main shell (402) is fixedly fitted with a snap-fit ​​slide (602). The snap-fit ​​ramp (603) is slidably connected inside the snap-fit ​​slide (602). The bottom cover (604) is attached to the bottom end of the snap-fit ​​slide (602). One end of the top spring (605) is snapped to the top of the bottom cover (604), and the other end is snapped to the bottom of the snap-fit ​​ramp (603). A side slide groove (606) is provided in the side wall of the snap-fit ​​slide (602). A release rod (607) is fixed on one side of the bottom of the snap-fit ​​ramp (603). The release rod (607) is slidably connected inside the side slide groove (606).

7. A pressure transmitter comprising a self-cleaning pressure tap structure as described in any one of claims 1 to 6, characterized in that: It also includes a pressure transmitter module (3), which includes a locking seat (303), an opening and closing cover (304), a locking bolt (307), a locking nut (308), a sealing sleeve (311), and a sealing sleeve groove (312). An opening and closing rotating seat (301) is fixedly connected to the top of the outlet of the flared tube section (103). An opening and closing rotating shaft (302) is installed and fixed in the opening and closing rotating seat (301). The locking seat (303) is fixedly connected to the bottom of the outlet of the flared tube section (103). The sealing sleeve groove (312) is formed on the outlet end face of the flared tube section (103). The top of the outer wall of the cover (304) is fixed with an opening and closing rotating arm (305), which is screwed to the opening and closing rotating shaft (302). The bottom of the outer wall of the cover (304) is fixedly connected with a snap-shell holder (306). The sealing sleeve (311) is fastened to the inner end of the cover (304). After the snap-shell holder (306) is aligned with the fastening seat (303), the locking bolt (307) passes through the through hole opened in the snap-shell holder (306) and the fastening seat (303) and forms a connection with the locking nut (308), which can form a fastening between the cover (304) and the flared tube (103).

8. A pressure transmitter according to claim 7, characterized in that: The pressure transmitter module (3) also includes a pressure transmitter body (310), and the top wall of the opening and closing cover (304) is fixedly connected to a mounting pipe seat (309). The inlet position of the pressure transmitter body (310) is connected in the mounting pipe seat (309).

9. A pressure transmitter according to claim 7 or 8, characterized in that: An inner elastic arm (313) with a corner structure is also installed and fixed in the middle of the inner side of the opening and closing cover (304).

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