Novel valve type orifice plate throttling device of sealing structure

Abstract

The invention relates to the technical field of pore plate valves, in particular to a novel valve type pore plate throttling device with a sealing structure, which comprises a lower valve body, an upper valve body, a pore plate carrier plate, a pore plate body, an overturning structure, an adsorption structure, a sealing gasket, a sealing baffle plate, a pressing plate and a top plate. The sealing ring on the sealing plate in the overturning structure is tightly attached to the bottom plate on the upper valve body, soft sealing is achieved, scratching caused by the fact that impurities in fluid enter the sealing face can be effectively avoided, the leakage probability is remarkably reduced, residual liquid on the surface of the pore plate body can be conveniently wiped and cleaned through the arrangement of the adsorption structure, and the service life of the pore plate is prolonged. By wiping the surface of the pore plate body, residual liquid can be removed and prevented from falling to a pressing plate sealing gasket to affect the sealing effect, the sealing reliability of follow-up operation of the device is guaranteed, the service life of the sealing gasket is prolonged, meanwhile, the cleanliness of the dismounting operation environment can be kept, and the workload of manual cleaning is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of orifice plate valves, in particular to a valve type orifice plate throttling device with a novel sealing structure. BACKGROUND

[0002] The valve type orifice plate throttling device is a device for realizing flow measurement based on the principle of throttling differential pressure, and its core is to form a differential pressure through the flow contraction effect of fluid flowing through the orifice plate throttling element, and to complete precise flow measurement by using the functional relationship between differential pressure and flow. The device has the advantages of stable operation, wide range, wide type of adapted medium, etc., and is widely used in the fields of industrial flow measurement such as oil and gas transportation, chemical production, and liquefied gas storage and transportation. The sealing performance, as a core performance index, directly determines the measurement accuracy and the safety of the operating conditions.

[0003] However, in the working condition environment of industrial natural gas transportation, chemical medium measurement, etc. containing impurities and requiring high measurement accuracy, the existing valve type orifice plate throttling device mostly adopts a hard sealing structure, and needs to be matched with one or two sets of grease injection valves to ensure the sealing performance. The operator is prone to improper over-injection of grease. The excess sealing grease is dried and condensed in the device after long-term accumulation, which can easily cause device blockage, resulting in the orifice valve being unable to operate normally. Moreover, because the orifice plate surface is in long-term contact with the medium, the viscous components in the medium are easily attached to the orifice plate surface. The residual liquid will drip during the sliding process of the orifice plate, which not only pollutes the operating environment, but also damages the subsequent sealing components, affecting the subsequent sealing reliability of the device. SUMMARY

[0004] In view of the problems in the prior art, the present application provides a valve type orifice plate throttling device with a novel sealing structure.

[0005] The technical scheme adopted by the present application to solve the technical problems is: a valve type orifice plate throttling device with a novel sealing structure, comprising a lower valve body, an upper valve body installed on the lower valve body, an orifice plate carrier plate slidingly connected to the lower valve body, an orifice plate body installed on the orifice plate carrier plate, a pressing plate installed on the upper valve body, a top plate, and a sealing gasket, wherein the lower valve body is provided with a turnover structure, and the upper valve body is provided with an adsorption structure. The adsorption structure comprises two sliding seats slidingly connected to the upper valve body and guide rods slidingly connected to the sliding seats, the sliding seats are rotatably connected with mounting shafts, the mounting shafts are fixedly connected with cleaning cotton rollers, the mounting shafts are provided with through holes, the upper valve body is provided with two dismounting plates, the two guide rods are fixedly connected with the two dismounting plates, third springs are fixedly connected between the sliding seats and the dismounting plates, and the sliding seats are provided with heating pipes.

[0006] Specifically, the sliding seat is fixedly connected with a pressing rod, and the pressing rod is slidingly connected with the upper valve body.

[0007] Specific, the dismounting plate is fixedly connected with a rubber ring, the rubber ring is in abutment with the upper valve body, the sealing gasket is fixedly connected with a sealing baffle, and the sealing baffle is in sliding connection with the upper valve body.

[0008] Specific, the flip structure includes two flip shafts rotatably connected to the lower valve body and a flip plate fixedly connected between the two flip shafts.

[0009] Specific, the lower valve body is rotatably connected with two pin shafts, and a sealing plate is fixedly connected between the two pin shafts, and the sealing plate is in abutment with the flip plate.

[0010] Specific, the upper valve body is fixedly connected with a bottom plate, and the sealing plate is provided with a sealing ring.

[0011] Specific, the flip plate is fixedly connected with two fixed shafts, and a push-pull rod is rotatably connected to the fixed shafts.

[0012] Specific, the sealing plate is provided with a sliding groove, a roller is rotatably connected to the push-pull rod, and the roller is in rolling fit with the sliding groove.

[0013] Specific, the flip plate is provided with a sunken step, and the sunken step limits the rotation range of the push-pull rod.

[0014] Specific, the flip plate is provided with a spring sheet, a rectangular block is fixedly connected to the flip shaft, and a crank handle is inserted into the rectangular block.

[0015] The beneficial effects of the present application are: (1) The valve type orifice plate throttling device with a novel sealing structure disclosed by the present application is provided with a flip structure on the lower valve body, the sealing ring on the sealing plate in the flip structure is tightly attached to the bottom plate on the upper valve body, soft sealing is realized, the scratch caused by impurities in the fluid entering the sealing surface can be effectively avoided, and the leakage probability is significantly reduced.

[0016] (2) The valve type orifice plate throttling device with a novel sealing structure disclosed by the present application is provided with an adsorption structure on the upper valve body, the adsorption structure facilitates wiping and cleaning of the residual liquid on the surface of the orifice plate body, the residual liquid can be removed by wiping the surface of the orifice plate body, the influence of the residual liquid on the sealing effect caused by falling to the sealing gasket of the pressing plate is avoided, the sealing reliability of the subsequent operation of the device is ensured, the service life of the sealing gasket is prolonged, the cleaning of the dismounting operation environment is maintained, and the workload of manual cleaning is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described in conjunction with the drawings and examples.

[0018] Figure 1The overall structure schematic diagram of a preferred embodiment of a valve orifice plate throttling device with a new sealing structure provided by the present application; Figure 2 The connection structure schematic diagram of the upper valve body and the lower valve body of the present application; Figure 3 The A part structure enlarged schematic diagram shown in Figure 2 Figure 4 The B part structure enlarged schematic diagram shown in Figure 2 Figure 5 The C part structure enlarged schematic diagram shown in Figure 2 Figure 6 The connection structure schematic diagram of the dismounting plate and the upper valve body of the present application; Figure 7 The connection structure schematic diagram of the sliding seat and the guide rod of the present application; Figure 8 The connection structure schematic diagram of the turning plate and the turning shaft of the present application.

[0019] In the figure: 1, lower valve body; 2, upper valve body; 3, orifice plate carrier plate; 4, orifice plate body; 5, turning structure; 501, turning shaft; 502, turning plate; 503, pin shaft; 504, sealing plate; 505, sealing ring; 506, fixed shaft; 507, push-pull rod; 508, roller; 509, sliding groove; 510, step; 511, crank handle; 512, bottom plate; 513, spring sheet; 6, adsorption structure; 601, sliding seat; 602, guide rod; 603, mounting shaft; 604, cleaning cotton roller; 605, through hole; 606, heating pipe; 607, third spring; 608, dismounting plate; 609, pressing rod; 610, rubber ring; 7, sealing gasket; 8, sealing baffle; 9, pressing plate; 10, top plate; 11, gear shaft; 12, transmission gear. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0021] As Figure 1 — Figure 4 and Figure 6 — Figure 8 ​​​As shown, the valve orifice plate throttling device with a new sealing structure comprises a lower valve body 1, an upper valve body 2 installed on the lower valve body 1, an orifice plate carrier plate 3 slidably connected to the lower valve body 1, an orifice plate body 4 installed on the orifice plate carrier plate 3, a pressing plate 9, a top plate 10 and a sealing gasket 7 installed on the upper valve body 2, the lower valve body 1 is provided with a turnover structure 5, and the upper valve body 2 is provided with an adsorption structure 6; the adsorption structure 6 comprises two sliding seats 601 slidably connected to the upper valve body 2 and guide rods 602 slidably connected to the sliding seats 601, the sliding seat 601 is rotatably connected with a mounting shaft 603, the mounting shaft 603 is fixedly connected with a cleaning cotton roller 604, the mounting shaft 603 is provided with a through hole 605, the upper valve body 2 is provided with two dismounting plates 608, the two guide rods 602 are fixedly connected with the two dismounting plates 608, the sliding seat 601 and the dismounting plate 608 are fixedly connected with a third spring 607, and the sliding seat 601 is provided with a heating pipe 606.

[0022] Specifically, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 , the sliding seat 601 is fixedly connected with a pressing rod 609, the pressing rod 609 is slidably connected with the upper valve body 2, the dismounting plate 608 is fixedly connected with a rubber ring 610, the rubber ring 610 is in contact with the upper valve body 2, the sealing property between the dismounting plate 608 and the upper valve body 2 can be improved, the rubber ring 610 is in contact with the upper valve body 2, the sealing baffle 8 is slidably matched with the sealing groove on the upper valve body 2, the fluid can be prevented from entering the cavity of the sealing baffle 8 and the dismounting plate 608, and the sealing property is further improved, the sealing gasket 7 is fixedly connected with the sealing baffle 8, and the sealing baffle 8 is slidably connected with the upper valve body 2.

[0023] Specifically, as shown in Figure 1 , Figure 2 , Figure 5 and Figure 8As shown, the turnover structure 5 comprises two turnover shafts 501 rotatably connected to the lower valve body 1 and a turnover plate 502 fixedly connected between the two turnover shafts 501, the lower valve body 1 is rotatably connected with two pin shafts 503, the two pin shafts 503 are fixedly connected with a sealing plate 504, the sealing plate 504 is in abutment with the turnover plate 502, the upper valve body 2 is fixedly connected with a bottom plate 512, the sealing plate 504 is installed with a sealing ring 505, during the continuous rotation of the turnover plate 502, the spring sheet 513 installed thereon gradually contacts and compresses the sealing plate 504, the elastic force of the spring sheet 513 continuously presses the sealing plate 504, until the sealing ring 505 on the sealing plate 504 is tightly attached to the bottom plate 512 fixedly connected to the upper valve body 2, under the double action of the spring sheet 513 and the medium pressure, the sealing ring 505 is tightly attached between the sealing plate 504 and the bottom plate 512, which can effectively isolate the upper and lower chambers, the turnover plate 502 is fixedly connected with two fixed shafts 506, the fixed shafts 506 are rotatably connected with a push-pull rod 507, the sealing plate 504 is provided with a sliding groove 509, the push-pull rod 507 is rotatably connected with a roller shaft 508, with the rotation of the turnover plate 502, the push-pull rod 507 pushes the sealing plate 504 to act, the roller shaft 508 on the push-pull rod 507 rolls along the sliding groove 509 on the sealing plate 504 in a matching manner, the rolling matching can greatly reduce the transmission resistance and avoid the occurrence of jamming phenomenon, ensuring smooth and accurate turnover action, and the roller shaft 508 and the sliding groove 509 roll in a matching manner.

[0024] Specifically, as shown in Figure 5 , and Figure 8 , the turnover plate 502 is provided with a sunken step 510, which limits the rotation range of the push-pull rod 507, the sunken step 510 on the turnover plate 502 limits the rotation range of the push-pull rod 507, preventing excessive rotation from affecting the movement of the sealing plate 504, the turnover plate 502 is installed with a spring sheet 513, the sunken step 510 on the turnover plate 502 limits the rotation range of the push-pull rod 507, preventing excessive rotation from affecting the movement of the sealing plate 504, the turnover shaft 501 is fixedly connected with a rectangular block, and the rectangular block is inserted with a crank 511.

[0025] In use, first, the gear shaft 11 on the lower valve body 1 is operated to drive the transmission gear 12 in the lower valve body 1, the hole plate carrier plate 3 is driven to slide along the guide structure of the lower valve body 1, since the sealing plate 504 does not form a seal with the bottom plate 512 at this time, the hole plate carrier plate 3 can move smoothly between the upper and lower chambers, the hole plate carrier plate 3 is pulled back into the upper valve body 2 along the guide structure from the working position of the lower valve body 1, then the operator inserts the crank 511 into the rectangular block of the turnover shaft 501, and then rotates the crank 511 on the turnover shaft 501, since the two turnover shafts 501 are fixedly connected with the turnover plate 502, the rotation of the crank 511 drives the turnover plate 502 to rotate synchronously, the two fixed shafts 506 on the turnover plate 502 are rotationally connected with the push-pull rod 507, as the turnover plate 502 rotates, the push-pull rod 507 pushes the sealing plate 504 to act, the roller shaft 508 on the push-pull rod 507 rolls along the sliding groove 509 on the sealing plate 504, the rolling fit can greatly reduce the transmission resistance and avoid the phenomenon of jamming, ensuring smooth and accurate turnover action, the step 510 on the turnover plate 502 limits the rotation range of the push-pull rod 507 to prevent excessive rotation from affecting the movement of the sealing plate 504, during the continuous rotation of the turnover plate 502, the spring sheet 513 installed thereon gradually contacts and compresses the sealing plate 504, the elastic force of the spring sheet 513 continuously presses the sealing plate 504, until the sealing ring 505 on the sealing plate 504 is tightly attached to the bottom plate 512 fixedly connected to the upper valve body 2, under the dual action of the spring sheet 513 and the medium pressure, the sealing ring 505 is tightly attached between the sealing plate 504 and the bottom plate 512, which can effectively isolate the upper and lower chambers, realize soft sealing through the sealing ring 505, effectively avoid scratches caused by impurities in the fluid entering the sealing surface, significantly reduce the leakage probability, eliminate the safety hidden danger of the operator in the high-pressure medium working condition, and at the same time, the soft sealing structure does not need to be provided with a grease injection valve, which reduces the number of parts, reduces the production cost, avoids the internal blockage problem of the device caused by excessive grease injection, reduces the grease injection operation steps, and reduces the probability of personnel misoperation, at this time, the hole plate body 4 on the hole plate carrier plate 3 can be directly taken out for inspection or replacement, the whole process does not need to stop the medium conveying, greatly improves the operation efficiency, the balance valve of the device is closed first, the gas vent valve on one side of the upper valve body 2 is opened to empty the upper chamber pressure, after the pressure is completely emptied, the top plate 10, the pressing plate 9 and the sealing gasket 7 at the top end of the upper valve body 2 are removed, then the gear shaft 11 of the transmission gear 12 on the upper valve body 2 is operated to drive the hole plate carrier plate 3 to slide out along the guide structure of the upper valve body 2; After the gasket 7 is removed, the sliding seat 601 slides along the guide rod 602 under the action of the third spring 607, the guide rod 602 is fixedly connected with the dismounting plate 608 on the upper valve body 2, can provide accurate guidance for the sliding of the sliding seat 601, avoids that the sliding seat 601 deviates to cause that the cleaning cotton roller 604 is not accurately attached to the hole plate body 4, in the sliding process of the sliding seat 601, the mounting shaft 603 rotatably connected thereon drives the fixedly connected cleaning cotton roller 604 to gradually attach to the surface of the hole plate body 4, when the hole plate carrier plate 3 slides, will drive the cleaning cotton roller 604 to rotate synchronously, realizes wiping and cleaning of the residual liquid on the surface of the hole plate body 4, through wiping and cleaning treatment to the surface of the hole plate body 4, can remove the residual liquid, avoids that it falls to the gasket 7 at the pressing plate 9 to influence the sealing effect, not only guarantees the sealing reliability of subsequent operation of the device, but also prolongs the service life of the gasket 7, simultaneously can also keep the cleaning of the dismounting operation environment, reduces the workload of manual cleaning, the third spring 607 fixedly connected between the sliding seat 601 and the dismounting plate 608 will always generate elastic force to the sliding seat 601, makes the cleaning cotton roller 604 and the hole plate body 4 keep appropriate attachment pressure, guarantees that the cleaning effect is stable, simultaneously can start the heating pipe 606 on the sliding seat 601, heat is uniformly transmitted to the cleaning cotton roller 604 through the through hole 605 on the mounting shaft 603, realizes heating of the cleaning cotton roller 604, speeds up evaporation of the residual liquid, the pressing rod 609 can drive the two sliding seats 601 slidably connected on the upper valve body 2 to slide along the guide rod 602, facilitates installation of the gasket 7, in addition, the design of the dismounting plate 608 facilitates dismounting and maintenance of the guide rod 602, the sliding seat 601, the cleaning cotton roller 604 and other structures in the later period, reduces maintenance cost and difficulty, the rubber ring 610 contacts the upper valve body 2, can improve the sealing property between the dismounting plate 608 and the upper valve body 2; When the orifice plate body 4 is replaced, the new orifice plate body 4 is mounted in the orifice plate carrier 3 to complete the pre-fixing, and then the orifice plate carrier 3 is driven to slide along the guide structure by the transmission gear 12 in the upper valve body 2 and the lower valve body 1, the orifice plate carrier 3 is pushed to the designated position in the upper valve body 2, then the pressing plate 9 and the top plate 10 are reset in turn, and the sealing gasket 7 and the sealing baffle 8 are fastened, the cooperation between the pressing plate 9 and the sealing gasket 7 realizes the sealing isolation of the top end of the upper valve body 2 from the outside, preventing foreign matters from entering the chamber to pollute the fluid or damage the internal structure, at the same time, the sealing baffle 8 and the sealing groove on the upper valve body 2 are in sliding cooperation, which can prevent the fluid from entering the cavity between the sealing baffle 8 and the dismounting plate 608, further improving the sealing performance, then the air release valve is closed, the balance valve is opened, the upper and lower chambers are balanced, the sealing plate 504 is opened, the upper and lower chambers are connected, the gear shaft 11 on the lower valve body 1 is rotated to drive the orifice plate carrier 3 to completely swing into the specified position in the lower chamber, then the sealing plate 504 is closed to isolate the upper and lower chambers, the balance valve is closed, the air release valve is opened, the pressure in the upper chamber is released, and the metering work starts, the operation shaft (turnover shaft 501) in the lower valve body 1 of the device and the operation gear shaft 11 of the orifice plate carrier 3 are designed to be misaligned, which can help the operator to clearly distinguish the two operation functions under complex working conditions, effectively avoiding the misoperation of the orifice plate carrier 3 flying out suddenly.

[0026] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0027] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A novel valve-type orifice plate throttling device with a sealing structure, comprising a lower valve body (1), an upper valve body (2) mounted on the lower valve body (1), an orifice plate carrier plate (3) slidably connected to the lower valve body (1), an orifice plate body (4) mounted on the orifice plate carrier plate (3), a pressure plate (9), a top plate (10), and a sealing gasket (7) mounted on the upper valve body (2), characterized in that, The lower valve body (1) is provided with a flipping structure (5), and the upper valve body (2) is provided with an adsorption structure (6). The adsorption structure (6) includes two slide blocks (601) slidably connected to the upper valve body (2) and a guide rod (602) slidably connected to the slide blocks (601). An installation shaft (603) is rotatably connected to the slide block (601). A cleaning cotton roller (604) is fixedly connected to the installation shaft (603). A through hole (605) is provided on the installation shaft (603). Two disassembly plates (608) are installed on the upper valve body (2). The two guide rods (602) are fixedly connected to the two disassembly plates (608) respectively. A third spring (607) is fixedly connected between the slide block (601) and the disassembly plate (608). A heating tube (606) is installed on the slide block (601).

2. The valve-type orifice plate throttling device with a novel sealing structure according to claim 1, characterized in that: A pressing rod (609) is fixedly connected to the slide (601), and the pressing rod (609) is slidably connected to the upper valve body (2).

3. The valve-type orifice plate throttling device with a novel sealing structure according to claim 2, characterized in that: A rubber ring (610) is fixedly connected to the disassembly plate (608), the rubber ring (610) abuts against the upper valve body (2), and a sealing baffle (8) is fixedly connected to the sealing gasket (7), the sealing baffle (8) is slidably connected to the upper valve body (2).

4. The valve-type orifice plate throttling device with a novel sealing structure according to claim 1, characterized in that: The flip structure (5) includes two flip shafts (501) rotatably connected to the lower valve body (1) and a flap (502) fixedly connected between the two flip shafts (501).

5. The valve-type orifice plate throttling device with a novel sealing structure according to claim 4, characterized in that: The lower valve body (1) is rotatably connected to two pins (503), and a sealing plate (504) is fixedly connected between the two pins (503). The sealing plate (504) abuts against the flap (502).

6. The valve-type orifice plate throttling device with a novel sealing structure according to claim 5, characterized in that: A base plate (512) is fixedly connected to the upper valve body (2), and a sealing ring (505) is installed on the sealing plate (504).

7. The valve-type orifice plate throttling device with a novel sealing structure according to claim 6, characterized in that: Two fixed shafts (506) are fixedly connected to the flap (502), and a push-pull rod (507) is rotatably connected to the fixed shaft (506).

8. The valve-type orifice plate throttling device with a novel sealing structure according to claim 7, characterized in that: The sealing plate (504) is provided with a sliding groove (509), and a roller (508) is rotatably connected to the push-pull rod (507). The roller (508) and the sliding groove (509) are in rolling cooperation.

9. The valve-type orifice plate throttling device with a novel sealing structure according to claim 8, characterized in that: The flap (502) is provided with a recessed step (510), which limits the rotation range of the push-pull rod (507).

10. A valve-type orifice plate throttling device with a novel sealing structure according to claim 4, characterized in that: A spring plate (513) is installed on the flip plate (502), a rectangular block is fixedly connected to the flip shaft (501), and a crank (511) is inserted into the rectangular block.

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