Special channel differential pressure type flow meter for petroleum

Abstract

The utility model provides a differential pressure type flow meter for a special petroleum channel. The special channel differential pressure type flowmeter for the petroleum comprises a straight pipe, a differential pressure transformer is arranged above the straight pipe, a flow totalizer is fixedly installed on the differential pressure transformer, the input end of the differential pressure transformer is fixedly connected with two pressure guide pipes, one ends of the pressure guide pipes extend into the straight pipe and are fixedly connected with the straight pipe, and the other ends of the pressure guide pipes are fixedly connected with the flow totalizer. The straight pipe is provided with a clamping mechanism and a protection mechanism. According to the channel differential pressure type flow meter special for the petroleum, due to the fact that the hoop mechanism is arranged, the pore plate can be rapidly assembled and disassembled, the sealing arc plate is fixedly installed through the two locking bolts and the two locking nuts, and the installation operation efficiency is improved; and the protection mechanism is arranged, so that the external parts of the differential pressure transformer, the flow totalizer and the pressure guide pipe can be protected through the two slidable protection shells, and the parts are prevented from being collided and damaged by external force.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow meters, in particular to a special channel differential pressure flow meter for petroleum. Background Art

[0002] During the oil extraction process, it is transported through pipes and troughs. The oil delivery flow rate during the transportation process is large, so it is necessary to install a differential pressure flowmeter on the delivery pipe trough. The flow rate is measured by using the throttling principle of fluid flow and the pressure difference generated when the fluid flows through the throttling device.

[0003] During the transportation of oil, particulate impurities are carried along. Therefore, when the impurities in the oil flow through the orifice plate of the throttling device, the sharp metal edge in the center of the orifice plate will be worn and eroded, thereby affecting the accuracy of the flow measurement data. Therefore, the metal orifice plate needs to be replaced periodically. The existing detachable orifice plate is clamped by two flanges. Therefore, when removing the flange and replacing the orifice plate, it is necessary to tighten multiple locking bolts on the flange, resulting in inconvenient and inefficient operation. Secondly, after the differential pressure flowmeter is installed on the pipeline, there is no external protection treatment, so the flowmeter is easily damaged when it is hit by external force.

[0004] Therefore, it is necessary to provide a new petroleum-specific channel differential pressure flowmeter to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a special channel differential pressure flow meter for petroleum, which can realize easy installation and disassembly of a throttling orifice plate and protect the outside of the flow meter.

[0006] To solve the above technical problems, the utility model provides a special channel differential pressure flowmeter for petroleum, comprising: a straight tube, a differential pressure transformer is provided above the straight tube, a flow totalizer is fixedly mounted on the differential pressure transformer, two pressure guide tubes are fixedly connected to the input end of the differential pressure transformer, one end of the pressure guide tube extends into the straight tube and is fixedly connected to the straight tube, and a clamp mechanism and a protective mechanism are provided on the straight tube;

[0007] The clamp mechanism includes a mounting groove, which is opened on the straight pipe, and a orifice plate is embedded in the mounting groove. Two sealing rings are fixedly installed in the mounting groove, and the left and right sides of the orifice plate are respectively against the two sealing rings. A sealing arc plate is installed on the straight pipe, and an arc block is fixedly installed on the sealing arc plate. Two fixed blocks are fixedly installed on the straight pipe, and circular holes are opened on the arc block and the fixed block. A locking bolt is inserted in the circular hole, and a locking nut is threaded on one end of the locking bolt.

[0008] As a further solution of the present invention, the protective mechanism includes two protective shells, the protective shells are arranged above the straight pipe, the flow integrator is located in the protective shells, two sliders are fixedly installed on the protective shells, two guide rods are fixedly installed on the straight pipes, the guide rods pass through the sliders and are slidably connected to the sliders, a fixing plate is fixedly installed on the protective shell, and a tightening bolt is threaded on the fixing plate, and one end of the tightening bolt extends to the bottom of the fixing plate and rests on the straight pipe.

[0009] As a further solution of the present invention, an observation window is provided on the protective shell, and the observation window is close to the flow integrator.

[0010] As a further solution of the present invention, a connecting block is fixedly connected to the orifice plate, a card slot is provided on the arc-shaped groove of the arc block, the connecting block is adapted to the card slot, a fixing screw is threadedly installed on the arc block, one end of the fixing screw extends into the card slot and is threadedly connected to the connecting block.

[0011] As a further solution of the present invention, a sealing rubber gasket is fixedly installed on the arc-shaped concave surface of the sealing arc plate, and one side of the sealing rubber gasket is against the straight pipe.

[0012] As a further solution of the present invention, flanges are fixedly installed at both ends of the straight pipe, and a plurality of mounting holes are opened on the flange, and the plurality of mounting holes are distributed around the flange.

[0013] Compared with related technologies, the petroleum-specific channel differential pressure flowmeter provided by the utility model has the following beneficial effects:

[0014] 1. The utility model is provided with a clamp mechanism, which enables the orifice plate to be quickly installed and disassembled, and the sealing arc plate is installed and fixed by two locking bolts and locking nuts, thereby improving the installation operation efficiency;

[0015] 2. The utility model is provided with a protective mechanism, which enables the differential pressure transformer, flow integrator and pressure pipe to be protected by two slidable protective shells, thereby preventing these components from being damaged by external force collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a special channel differential pressure flowmeter for petroleum provided by the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-section structure of the petroleum-specific channel differential pressure flowmeter provided by the utility model;

[0019] Figure 3 This is a schematic diagram of the orifice plate and sealing arc plate structure of a special channel differential pressure flowmeter for petroleum provided by the utility model.

[0020] In the figure: 1. Straight pipe; 101. Differential pressure transformer; 102. Flow integrator; 103. Pressure guiding pipe; 2. Mounting groove; 201. Orifice plate; 202. Sealing ring; 3. Sealing arc plate; 301. Arc block; 302. Fixing block; 303. Round hole; 304. Locking bolt; 305. Locking nut; 4. Connecting block; 401. Fixing screw; 5. Protective shell; 501. Slider; 502. Guide rod; 503. Fixing plate; 504. Tightening bolt. DETAILED DESCRIPTION

[0021] Please refer to Figure 1 、 Figure 2 and Figure 3 ,in, Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model of a special channel differential pressure flow meter for petroleum; Figure 2 This is a schematic diagram of the cross-section structure of the petroleum-specific channel differential pressure flowmeter provided by the utility model; Figure 3 This is a schematic diagram of the orifice plate and sealing arc plate structure of the petroleum-specific channel differential pressure flowmeter provided by the present invention. The petroleum-specific channel differential pressure flowmeter comprises: a straight pipe 1, a differential pressure transformer 101 disposed above the straight pipe 1, a flow totalizer 102 fixedly mounted on the differential pressure transformer 101, two pressure-guiding tubes 103 fixedly connected to the input end of the differential pressure transformer 101, one end of each of the pressure-guiding tubes 103 extending into and fixedly connected to the straight pipe 1, and a clamp mechanism and a protective mechanism provided on the straight pipe 1;

[0022] The clamp mechanism includes a mounting groove 2, which is opened on the straight pipe 1, and a orifice plate 201 is embedded in the mounting groove 2. Two sealing rings 202 are fixedly installed in the mounting groove 2, and the left and right sides of the orifice plate 201 are respectively against the sealing ring 202. A sealing arc plate 3 is installed on the straight pipe 1, and an arc block 301 is fixedly installed on the sealing arc plate 3. Two fixed blocks 302 are fixedly installed on the straight pipe 1, and circular holes 303 are opened on the arc block 301 and the fixed block 302. A locking bolt 304 is inserted in the circular hole 303, and a locking nut 305 is threadedly sleeved on one end of the locking bolt 304.

[0023] like Figure 1As shown, the protection mechanism includes two protection shells 5, which are arranged above the straight pipe 1, and the flow integrator 102 is located in the protection shell 5. Two sliders 501 are fixedly installed on the protection shell 5, and two guide rods 502 are fixedly installed on the straight pipe 1. The guide rods 502 pass through the sliders 501 and are slidably connected to the sliders 501. A fixing plate 503 is fixedly installed on the protection shell 5, and a tightening bolt 504 is threadedly installed on the fixing plate 503. One end of the tightening bolt 504 extends to the bottom of the fixing plate 503 and abuts against the straight pipe 1;

[0024] After the slider 501 slides on the guide rod 502, the protective shell 5 can be driven to move, and then the two protective shells 5 are combined to cover the outside of the differential pressure transformer 101, the flow integrator 102 and the pressure pipe 103, and then the tightening bolt 504 is turned. One end of the tightening bolt 504 is pressed against the straight pipe 1, so that the protective shell 5 is limited and fixed, thereby protecting the outside of the flow integrator 102 and other parts to prevent damage from external force collision.

[0025] like Figure 1 As shown, an observation window is provided on the protective shell 5, and the observation window is close to the flow totalizer 102;

[0026] By providing an observation window, the flow figures displayed on the screen of the flow totalizer 102 can be observed through the observation window, thereby obtaining the petroleum fluid flow data.

[0027] like Figure 3 As shown, the orifice plate 201 is fixedly connected to a connecting block 4, the arc-shaped groove of the arc block 301 is provided with a slot, the connecting block 4 is adapted to the slot, and a fixing screw 401 is threadedly installed on the arc block 301, one end of the fixing screw 401 extends into the slot and is threadedly connected to the connecting block 4;

[0028] By inserting the connecting block 4 into the slot and then screwing the fixing screw 401, the fixing screw 401 will place the connecting block 4 in the slot, and then the orifice plate 201 will be installed on the arc groove of the arc block 301, which makes it easier to install the orifice plate 201 in the installation slot 2 or remove it from the installation slot 2.

[0029] like Figure 3 As shown, a sealing rubber pad is fixedly installed on the arc-shaped concave surface of the sealing arc plate 3, and one side of the sealing rubber pad is against the straight pipe 1;

[0030] By providing a sealing rubber gasket, the sealing arc plate 3 is fixedly attached to the straight pipe 1, thereby improving the sealing and anti-leakage effect.

[0031] like Figure 1As shown, flanges are fixedly installed at both ends of the straight pipe 1, and a plurality of mounting holes are opened on the flange, and the plurality of mounting holes are distributed around the flange;

[0032] The flange is provided to facilitate the connection and installation of the straight pipe 1 and the oil delivery pipe groove.

[0033] The working principle of the petroleum-specific channel differential pressure flowmeter provided by this utility model is as follows:

[0034] Step 1: Install the straight pipe 1 on the dedicated oil delivery pipe groove. When the orifice plate 201 needs to be replaced after throttling the fluid for a long time, seal the oil pipe grooves connected to the left and right ends of the straight pipe 1 to stop oil delivery. Then loosen the locking bolts 304 to remove the locking bolts 304 from the fixed block 302 and the circular holes 303 on the sealing arc plate 3. Then drag the sealing arc plate 3 downward to remove the orifice plate 201 from the installation groove 2. Then loosen the fixing screws 401 to remove the connecting block 4 from the slot. Then remove the orifice plate 201 from the arc groove of the arc block 301 for disassembly.

[0035] Step 2: Replace the new orifice plate 201 and install it in the arc groove of the arc block 301. Then, insert the new orifice plate 201 into the installation groove 2 and place it between the two sealing rings 202 to seal both ends of the orifice plate 201. Then, connect and tighten the sealing arc plate 3 to the fixing block 302. The operation is simple and convenient, with fewer installation bolts, which improves the replacement efficiency of the orifice plate 201.

[0036] The third step: After installing the differential pressure transformer 101, the flow totalizer 102 and the pressure guiding tube 103 to the outside of the straight pipe 1, the two protective shells 5 are slid together to cover the outside of the flow totalizer 102, etc., and then tighten the tightening bolt 504 so that one end of the tightening bolt 504 is pressed against the straight pipe 1 to limit the protective shell 5. Then the protective shell 5 protects the flow totalizer 102, etc. to prevent damage by external force collision.

[0037] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art can clearly understand the details of its power mechanism, power supply system, and control system on the premise that they understand the principle of the above-mentioned utility model. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art.

[0038] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments or applied directly or indirectly without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A special channel differential pressure flow meter for petroleum, characterized in that: include: A straight pipe, a differential pressure transformer is provided above the straight pipe, a flow totalizer is fixedly mounted on the differential pressure transformer, two pressure guiding tubes are fixedly connected to the input end of the differential pressure transformer, one end of the pressure guiding tube extends into the straight pipe and is fixedly connected to the straight pipe, and a clamp mechanism and a protective mechanism are provided on the straight pipe; The clamp mechanism includes a mounting groove, which is opened on the straight pipe, and a orifice plate is embedded in the mounting groove. Two sealing rings are fixedly installed in the mounting groove, and the left and right sides of the orifice plate are respectively against the two sealing rings. A sealing arc plate is installed on the straight pipe, and an arc block is fixedly installed on the sealing arc plate. Two fixed blocks are fixedly installed on the straight pipe, and circular holes are opened on the arc block and the fixed block. A locking bolt is inserted in the circular hole, and a locking nut is threaded on one end of the locking bolt.

2. The petroleum-specific channel differential pressure flowmeter according to claim 1, characterized in that: The protective mechanism includes two protective shells, which are arranged above the straight pipe. The flow integrator is located in the protective shell. Two sliders are fixedly installed on the protective shell. Two guide rods are fixedly installed on the straight pipe. The guide rods pass through the sliders and are slidably connected to the sliders. A fixing plate is fixedly installed on the protective shell. A tightening bolt is threaded on the fixing plate. One end of the tightening bolt extends to the bottom of the fixing plate and rests on the straight pipe.

3. The petroleum-specific channel differential pressure flowmeter according to claim 2, characterized in that: An observation window is provided on the protective shell, and the observation window is close to the flow totalizer.

4. The petroleum-specific channel differential pressure flowmeter according to claim 1, characterized in that: A connecting block is fixedly connected to the orifice plate, a clamping slot is provided on the arc-shaped groove of the arc block, the connecting block is adapted to the clamping slot, a fixing screw is threadedly installed on the arc block, one end of the fixing screw extends into the clamping slot and is threadedly connected to the connecting block.

5. The petroleum-specific channel differential pressure flowmeter according to claim 1, characterized in that: A sealing rubber pad is fixedly installed on the arc-shaped concave surface of the sealing arc plate, and one side of the sealing rubber pad is against the straight pipe.

6. The petroleum-specific channel differential pressure flowmeter according to claim 1, characterized in that: Flanges are fixedly mounted on both ends of the straight pipe. A plurality of mounting holes are formed on the flanges, and the plurality of mounting holes are distributed around the flanges.

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