Throttling equipment with pore plate convenient to replace

Abstract

The utility model discloses throttling equipment with a pore plate convenient to replace, which belongs to the technical field of flow detection and comprises a sealing block, the pore plate, a lifting device, a lower-layer mounting piece, a flow meter mounting hole and an upper-layer mounting piece, a plurality of mounting cylinders are arranged in the lower-layer mounting piece, a hole groove is formed in the upper end of the lower-layer mounting piece, and a supporting block is arranged in the hole groove. The upper-layer installation piece is installed at the upper end of the lower-layer installation piece, a pipeline installation hole is formed in the upper-layer installation piece, first flange plates are arranged on the surfaces of the left side and the right side of the upper-layer installation piece, the sealing block is inserted into the upper portion of the upper-layer installation piece, and the flow meter installation hole is inserted into the front surface of the upper-layer installation piece. One end of the lifting device is arranged in the mounting cylinder, and the other end of the lifting device penetrates through the lower-layer mounting piece and is arranged in the upper-layer mounting piece. The problems that in the prior art, when the pore plate is taken out, a bypass needs to be arranged for main pipe drainage, so that the production cost is high, and the operation mode is complex are solved. And the application universality of the throttling equipment is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of flow detection, in particular to a throttling device with an orifice plate that can be easily replaced. Background Art

[0002] For flow detection, a pressure difference is generally generated by the fluid, and then a flow calculator is used to calculate the real-time flow rate through the pressure difference.

[0003] The pressure difference is generated by adding an orifice plate in the pipeline, and then using the orifice plate to change the flow area so that a pressure difference is generated at both ends of the orifice plate. After the pressure difference at both ends is collected, it can be calculated. However, due to the long-term use of the orifice plate and the flow of the medium in the pipeline, the orifice plate needs to be replaced or repaired. The orifice plate needs to be removed, but it is generally not allowed to stop the medium transportation in the main pipe. The common existing treatment method is to add a bypass, and then introduce the medium in the main pipe into the bypass first. After the orifice plate in the main pipe is replaced, it is connected to the main board. This operation is not only troublesome, but also increases the production cost.

[0004] Therefore, how to provide a throttling device with convenient orifice plate replacement to solve the problem of inconvenience in replacing orifice plates in existing processes is a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] To this end, the utility model provides a throttling device with an orifice plate that can be easily replaced, so as to solve the problems in the prior art of high production cost and complicated operation caused by the need to set up a bypass for main pipe drainage when the orifice plate is taken out.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a throttling device with convenient replacement of orifice plates, comprising:

[0008] The lower mounting piece has a plurality of mounting tubes disposed therein, a hole slot is opened at the upper end of the lower mounting piece, a support block is disposed in the hole slot, the support blocks are disposed in pairs, and a dirt collecting tank is disposed between two of the support blocks;

[0009] An upper mounting member is mounted on the upper end of the lower mounting member, a pipeline mounting hole is arranged inside the upper mounting member, and first flanges are arranged on the left and right surfaces of the upper mounting member, and the first flange is arranged on one side of the pipeline mounting hole;

[0010] A sealing block, inserted above the upper mounting member;

[0011] Flow meter mounting holes, arranged in pairs, inserted in the front surface of the upper mounting piece;

[0012] An orifice plate, arranged at the upper end of the support block;

[0013] A lifting device, one end of which is arranged in the installation cylinder, and the other end of which passes through the lower installation piece and is arranged in the upper installation piece, and the orifice plate is installed on the upper end of the lifting device;

[0014] Wherein, the pipeline is arranged in the pipeline installation hole.

[0015] In a possible implementation, the lifting device includes:

[0016] A plurality of power gears, the bottom ends of which are mounted in the mounting tube, wherein one of the power gears is sleeved on the outside of a transmission rod, the upper end of the transmission rod passes through the top plate of the lower mounting member and is connected to a rocker, and the bottom end of the transmission rod is arranged in the mounting tube;

[0017] A transmission gear, which is transmission-connected to the right side of the power gear;

[0018] Lifting gears are arranged in pairs and are transmission-connected to the front and rear sides of the transmission gear;

[0019] A lifting rod, the rod body is transmission-connected to the lifting gear, the bottom end of the lifting rod passes through the bottom plate of the lower mounting piece, the top end of the lifting rod is connected with a clamping mechanism, and the orifice plate is arranged between the two clamping mechanisms.

[0020] In a possible implementation, the clamping mechanism includes:

[0021] A clamping block is installed at the top end of the lifting rod, an arc groove is formed on the inner surface of the clamping block, the arc groove abuts against the outer surface of the orifice plate, and a circular hole is formed on the clamping block;

[0022] A push rod is arranged in the circular hole, a limiting bolt is arranged at one end of the push rod, the limiting bolt is inserted in the orifice plate, and a stopper is sleeved on the push rod body;

[0023] A limit spring is installed between the clamping block and the stopper, the limit spring is arranged in the circular hole, and the limit spring is sleeved on the outside of the push rod.

[0024] In a possible implementation, the interior of the lifting gear is an internal thread structure, and the outer surface of the lifting rod is provided with an external thread structure.

[0025] In a possible implementation, the orifice plate includes:

[0026] A circular piece with a reducing hole in the middle;

[0027] A plurality of flow guide holes are provided on the circular member, and diameter-changing holes are arranged between the plurality of flow guide holes.

[0028] In a possible implementation, a handle is provided on the upper end of the sealing block.

[0029] In a possible implementation, triangular guide blocks are arranged on the front and rear sides of the two support blocks, a rectangular hole is opened at the bottom end of the support block, a sewage discharge passage is opened on the top plate of the lower mounting member, and one end of the sewage discharge passage is connected to the sewage collecting tank.

[0030] The utility model provides a lifting device to lift the orifice plate. When the orifice plate rises, the sealing block is opened to keep the air pressure in the pipe consistent with the atmospheric pressure. Then the orifice plate is replaced. At the same time, due to the withdrawal of the orifice plate, a gap will be caused between the two pipes. At this time, if there is fluid in the pipe, the support block can play a drainage effect. In this case, there is no need to stop the medium transportation. The flowing medium will pass through the sewage collecting tank. When the sewage collecting tank is full, the medium will continue to flow. There is no need to add a bypass for drainage. When the orifice plate is replaced, it descends and returns to its original position to continue the throttling operation, which not only improves the production efficiency but also reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0032] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0033] Figure 1 A cross-sectional view of a throttling device with convenient replacement of orifice plates provided by the utility model;

[0034] Figure 2 A three-dimensional diagram of the lifting device provided by the utility model;

[0035] Figure 3 A three-dimensional diagram of the clamping mechanism provided by the utility model;

[0036] Figure 4 A three-dimensional diagram of the orifice plate provided by the utility model;

[0037] In the figure: 1 sealing block; 2 orifice plate; 21 circular part; 22 variable diameter hole; 23 guide hole; 3 lifting device; 31 transmission gear; 32 lifting rod; 33 lifting gear; 34 power gear; 35 transmission rod; 36 clamping mechanism; 361 clamping block; 362 limit spring; 363 stopper; 364 push rod; 4 lower layer mounting part; 5 flow meter mounting hole; 6 upper layer mounting part. DETAILED DESCRIPTION

[0038] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Please refer to Figure 1-Figure 4 Now, a throttling device with convenient replacement of orifice plate disclosed in the utility model is described. The utility model is composed of six parts, such as Figure 1 , including a sealing block 1, an orifice plate 2, a lifting device 3, a lower mounting piece 4, a flow meter mounting hole 5 and an upper mounting piece 6, a plurality of mounting tubes are arranged inside the lower mounting piece 4, a hole groove is opened at the upper end of the lower mounting piece 4, a support block is arranged in the hole groove, the support blocks are arranged in pairs, a sewage collecting tank is arranged between the two support blocks, the upper mounting piece 6 is installed at the upper end of the lower mounting piece 4, a pipeline mounting hole is arranged inside the upper mounting piece 6, a first flange is arranged on the left and right side surfaces of the upper mounting piece 6, the first flange is arranged on one side of the pipeline mounting hole, the sealing block 1 is inserted above the upper mounting piece 6, the flow meter mounting holes 5 are arranged in pairs and inserted in the front surface of the upper mounting piece 6, the orifice plate 2 is arranged at the upper end of the support block, one end of the lifting device 3 is arranged in the mounting tube, and the other end passes through the lower mounting piece 4 and is arranged in the upper mounting piece 6, an orifice plate 2 is installed on the upper end of the lifting device 3, and the pipeline is arranged in the pipeline mounting hole.

[0040] When the utility model is in use, the orifice plate 2 to be used is different according to the different media flowing inside the pipeline, and the orifice plate 2 needs to be repaired or replaced after long-term use. When the orifice plate is replaced, the lifting device 3 is driven to drive the orifice plate 2 to move upward. During the movement, the sealing block 1 is slowly pulled out from the upper mounting member 6. The process of slowly pulling out is to allow air to flow into the equipment when pulling out, so that the internal and external air pressures remain the same, to prevent the internal air pressure from being too high and causing the medium in the pipe to spray out. After the sealing block 1 is pulled out, the lifting device 3 will lift the orifice plate 2 from the mounting member 6 of the sealing block 1. The installation position is extended so that the staff can quickly replace the orifice plate 2. The function of the sewage collecting tank is that when the fluid flows through the pipeline, part of the fluid will gather in the sewage collecting tank. When it is full, the fluid can continue to flow forward. After the orifice plate 2 is replaced, the lifting device 3 is used to bring it back. The support block can play a limiting role when the orifice plate 2 is lowered, so that the orifice plate 2 is aligned with the pipeline. At the same time, the support block can guide the fluid to the sewage collecting tank when the orifice plate 2 is replaced, and a second flange is arranged on the pipeline body. The second flange cooperates with the first flange to facilitate the installation of the pipeline.

[0041] In a specific embodiment, Figure 2 The lifting device 3 includes a transmission gear 31, a lifting rod 32, a lifting gear 33, a power gear 34, a transmission rod 35 and a clamping mechanism 36. The bottom ends of several power gears 34 are installed in the installation tube, one of the power gears 34 is sleeved on the outside of the transmission rod 35, the upper end of the transmission rod 35 passes through the top plate of the lower installation member 4 and is connected with a rocker, the bottom end of the transmission rod 35 is set in the installation tube, the transmission gear 31 is transmission-connected to the right side of the power gear 34, the lifting gears 33 are arranged in pairs, and are transmission-connected to the front and rear sides of the transmission gear 31, the lifting rod 32 is transmission-connected to the lifting gear 33, the bottom end of the lifting rod 32 passes through the bottom plate of the lower installation member 4, the top of the lifting rod 32 is connected with a clamping mechanism 36, and the orifice plate 2 is arranged between the two clamping mechanisms 36. After the clamping mechanism 36 is supported, the rocker is rotated, and the transmission rod 35 will rotate with the gear set formed by the entire power gear 34, and the rotational force will be transmitted to the lifting gear 33 through the transmission gear 31. The rotation of the lifting gear 33 will lift the lifting rod 34, and the lifting rod 34 will move with the clamping mechanism 36, and finally the orifice plate 2 will be lifted or lowered.

[0042] On the basis of the previous embodiment, the lifting gear 33 has an internal thread structure inside, and the lifting rod 32 has an external thread structure on its outer surface. Through the internal and external thread structures, and in conjunction with the rotation of the lifting gear 33, the lifting rod 32 can achieve lifting motion.

[0043] Based on the previous embodiment, Figure 3The clamping mechanism 36 includes a clamping block 361, a limit spring 362, a stopper 363 and a push rod 364. The clamping block 361 is installed at the top of the lifting rod 32. The inner surface of the clamping block 361 is provided with an arc groove, and the arc groove is against the outer surface of the orifice plate 2. A circular hole is opened on the clamping block 361, and the push rod 364 is arranged in the circular hole. A limit bolt is arranged at one end of the push rod 364, and the limit bolt is inserted in the orifice plate 2. A stopper 363 is sleeved on the rod body of the push rod 364. The limit spring 362 is installed between the clamping block 361 and the stopper 363. The limit spring 362 is arranged in the circular hole, and the limit spring 362 is sleeved on the outside of the push rod 364. The clamping mechanism 36 screws the limit bolt into the threaded hole on the side surface of the orifice plate 2 by rotating the push rod 364, and the setting of the limit spring 362 effectively limits the movement position of the push rod. For the replacement of the orifice plate 2, it is necessary to screw the limit bolt into the threaded hole. This operation is simple and extremely fast, which greatly improves the replacement efficiency of the orifice plate 2. Then, the lifting rod 32 is used to quickly return to the working position. Such rapid replacement can effectively prevent excessive leakage caused by pipeline transportation of gas.

[0044] In a specific embodiment, Figure 4 The orifice plate 2 includes a circular member 21, a variable diameter hole 22 and a flow guide hole 23. A variable diameter hole 22 is opened in the middle of the circular member 21, and a plurality of flow guide holes 23 are opened on the circular member 21. A variable diameter hole 22 is arranged between the plurality of flow guide holes 23. The variable diameter hole 22 makes the medium at both ends of the circular member 21 have a relatively obvious pressure difference. The principle is that the variable diameter hole 22 will change the flow volume of the medium, so that the pressure changes, and the effect of the flow guide hole 23 is that it can significantly reduce the formation of vortex, reduce the dead zone effect, and reduce the loss of fluid kinetic energy.

[0045] In a specific embodiment, a handle is provided on the upper end of the sealing block 1. The setting of the handle facilitates the removal of the sealing block 1.

[0046] In a specific embodiment, triangular flow guide blocks are arranged on both sides of the front and rear of the two support blocks, a rectangular hole is opened at the bottom of the support block, a sewage discharge passage is opened on the top plate of the lower mounting member 4, and one end of the sewage discharge passage is connected to the sewage collection tank. The triangular flow guide block is generally matched with the rectangular hole. If the flow rate in the pipeline is large, a part of the fluid will flow through the upper end of the support block. At this time, these fluids will flow to the triangular flow guide block. Through the triangular flow guide, these fluids will flow through the rectangular hole to the sewage collection tank. When the orifice plate 2 returns to the working position, the liquid in the sewage collection tank can be discharged through the sewage discharge passage.

[0047] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A throttling device with convenient orifice plate replacement, characterized in that: include: A lower-layer mounting member (4) is provided with a plurality of mounting tubes therein, a hole groove is opened at the upper end of the lower-layer mounting member (4), a support block is arranged in the hole groove, the support blocks are arranged in pairs, and a dirt collecting groove is arranged between two of the support blocks; An upper mounting member (6) is mounted on the upper end of the lower mounting member (4), a pipeline mounting hole is provided inside the upper mounting member (6), and first flanges are provided on the left and right surfaces of the upper mounting member (6), and the first flanges are provided on one side of the pipeline mounting hole; A sealing block (1) is inserted above the upper mounting member (6); Flow meter mounting holes (5) are arranged in pairs and inserted into the front surface of the upper mounting member (6); An orifice plate (2) is arranged on the upper end of the support block; A lifting device (3), one end of which is arranged in the installation tube, and the other end of which passes through the lower installation member (4) and is arranged in the upper installation member (6), and the orifice plate (2) is installed on the upper end of the lifting device (3); Wherein, the pipeline is arranged in the pipeline installation hole.

2. The throttling device with convenient orifice plate replacement according to claim 1 is characterized in that: The lifting device (3) comprises: A plurality of power gears (34), the bottom ends of which are mounted in the mounting tube, wherein one of the power gears (34) is sleeved on the outside of a transmission rod (35), the upper end of the transmission rod (35) passes through the top plate of the lower mounting member (4) and is connected to a rocker, and the bottom end of the transmission rod (35) is arranged in the mounting tube; A transmission gear (31) is transmission-connected to the right side of the power gear (34); Lifting gears (33) are arranged in pairs and are transmission-connected to the front and rear sides of the transmission gear (31); A lifting rod (32), the rod body of which is transmission-connected to the lifting gear (33), the bottom end of the lifting rod (32) passes through the bottom plate of the lower mounting member (4), the top end of the lifting rod (32) is connected to a clamping mechanism (36), and the orifice plate (2) is arranged between two of the clamping mechanisms (36).

3. The throttling device with convenient replacement of orifice plate according to claim 2, characterized in that: The clamping mechanism (36) comprises: A clamping block (361) is installed on the top of the lifting rod (32), the inner surface of the clamping block (361) is provided with an arc groove, the arc groove abuts against the outer surface of the orifice plate (2), and the clamping block (361) is provided with a circular hole; A push rod (364) is arranged in the circular hole, a limiting bolt is arranged at one end of the push rod (364), the limiting bolt is inserted into the orifice plate (2), and a stopper (363) is sleeved on the rod body of the push rod (364); A limit spring (362) is installed between the clamping block (361) and the stopper (363); the limit spring (362) is arranged in the circular hole; and the limit spring (362) is sleeved on the outside of the push rod (364).

4. The throttling device with convenient orifice plate replacement according to claim 2, characterized in that: The interior of the lifting gear (33) is an internal thread structure, and the outer surface of the lifting rod (32) is provided with an external thread structure.

5. The throttling device with convenient orifice plate replacement according to claim 1, characterized in that: The orifice plate (2) comprises: A circular member (21) having a diameter-changing hole (22) in the middle; A plurality of flow guide holes (23) are provided on the circular member (21), and a diameter-changing hole (22) is provided between the plurality of flow guide holes (23).

6. The throttling device with convenient orifice plate replacement according to claim 1, characterized in that: A handle is provided at the upper end of the sealing block (1).

7. The throttling device with convenient orifice plate replacement according to claim 1, characterized in that: Triangular guide blocks are arranged on the front and rear sides of the two support blocks, a rectangular hole is opened at the bottom of the support block, a sewage discharge passage is opened on the top plate of the lower mounting member (4), and one end of the sewage discharge passage is connected to the sewage collecting tank.

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