Petroleum pipeline non-insertion passing indicator
By designing a non-insert pass indicator in the oil pipeline, using alloy tube sensor coils and reasonable instrument structure and circuit design, the problem of poor reception effect in the prior art is solved, and more efficient signal reception and reduced false alarms are achieved.
Patent Information
- Application Number
- CN202421922482.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In the prior art, the reception effect of the pipe cleaning device in the oil pipeline is poor, and there are missed and false alarms.
A non-insert oil pipeline through indicators is designed, and an alloy tube sensor coil is used. Combined with a reasonable instrument structure and circuit design, it receives signals from the transmitter or permanent magnet in the pipeline, and performs signal processing through processors and circuits to improve the reception effect.
Through this design, the reception effect is improved, the missed and false alarms are reduced, and the explosion-proof properties are taken into account.
Smart Images
Figure CN222882863U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to supporting equipment for natural gas transportation pipelines, in particular to a non-insertion passing indicator for oil pipelines. Background Art
[0002] The collection, production and transportation of oil and natural gas in various countries around the world are mainly achieved through land and submarine pipelines. Therefore, pipeline transportation is the carrier of oil and natural gas. After the installation of the pipeline and during production and operation, the pipeline must be cleaned regularly to remove the debris in the pipeline or the sediment on the inner wall. Cleaning the pipeline is an important method to ensure the smooth flow of the pipeline. In cleaning the pipeline, the pig is an important equipment to ensure the transportation of the pipeline.
[0003] Pipeline cleaning operations are generally completed at oil, natural gas, and pipeline filling stations. To clean the pipeline, the pipe cleaner needs to be placed in the pipeline, and then the pipeline is filled with air through the air pump to push the cleaning pipe to move in the pipeline to complete the pipeline cleaning work.
[0004] When cleaning a pipeline, it is necessary to determine whether the pig is entering or exiting the gas station, that is, it is necessary to determine the point where the pig passes through the pipeline. There are generally two traditional methods:
[0005] 1. Drill a hole in the pipeline and install a transmission mechanism. When the pipe cleaner passes through, it can contact and trigger the transmission mechanism. The transmission mechanism is connected to the switch, and the switch is connected to the circuit board processor to display the passing time and signal number.
[0006] Second, it is not necessary to drill holes in the pipeline. The sensor outside the pipeline receives the signal from the transmitter or permanent magnet in the pipeline pig. The advantage of this method is that it does not require drilling holes in the pipeline, which can prevent leakage due to sealing reasons after drilling. Domestic and foreign products have adopted the method of receiving the signal from the transmitter or permanent magnet in the pipeline pig. There is no hardware and software filtering circuit design, the receiving effect is not good, and there are omissions and false alarms. Summary of the invention
[0007] The utility model provides a non-insertion passing indicator for a petroleum pipeline, which solves the technical problems of poor receiving effect and missed or false alarm phenomena in the prior art.
[0008] The utility model is realized by the following technical scheme: an oil pipeline non-insertion mode through the indicator, the bottom of the meter is connected to one end of the connecting rod through a connecting plate, and the other end of the connecting rod is connected to the sensor;
[0009] The instrument comprises an intermediate body, the front end of the intermediate body is screwed with an instrument front cover, a tempered glass keyboard panel is arranged on the instrument front cover, a touch screen circuit board is arranged between the interior of the instrument front cover and the tempered glass keyboard panel, a circuit control board and a wiring terminal circuit board are arranged between the interior of the instrument front cover and the intermediate body; the rear end of the intermediate body is screwed with an instrument back cover, a battery compartment circuit board is arranged between the interior of the instrument back cover and the intermediate body; the battery compartment circuit board, the wiring terminal circuit board, the circuit control board and the touch screen circuit board are connected by circuits;
[0010] The sensor comprises a sensor housing, an induction coil is arranged in the sensor housing, plugs are arranged at the left and right ends of the sensor housing, and supporting feet are arranged at the lower part of the sensor housing.
[0011] The internal circuit of the instrument and sensor is as follows: the signal output end of the induction coil is connected to two amplifiers, a filter and a level conversion circuit in sequence, and the output signal of the level conversion circuit is transmitted to the processor; the output signal of the processor is two-way, one way is connected to the external PLC control line after passing through the terminal circuit, and the other way is connected to the display digital tube through the relay; the touch screen circuit outputs the signal to the processor; the power supply circuit supplies power to the entire internal circuit.
[0012] The circuit control board and the touch screen circuit board are connected by a pin-to-socket connection mode, and the circuit control board and the touch screen circuit board are adhesively fixed inside the front cover of the instrument.
[0013] The circuit control board and the touch screen circuit board are connected via a flat cable.
[0014] The instrument and the connecting plate, and the connecting plate and the connecting rod are fixed by screws.
[0015] The support foot is provided with a bracket hole, and the fixing steel belt is passed into the support foot hole under the support foot and surrounds the pipeline for fixing.
[0016] The shell is arranged along the length direction of the pipeline, and the axis of the internal induction coil is parallel to the axis of the pipeline.
[0017] The beneficial effects of the utility model are as follows: the utility model provides a new type of non-insertion method through the above structure, with an alloy tube sensor coil, which can receive signals from a transmitter or a permanent magnet in the pipeline, and combined with a reasonable instrument structure and circuit design, while taking into account explosion-proof properties, the receiving effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the structure of the instrument;
[0020] Figure 3 It is a schematic diagram of the structure of the sensor;
[0021] Figure 4 It is the circuit block diagram of the utility model;
[0022] Figure 5 It is a circuit schematic diagram of the utility model. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] A non-insertion method for oil pipelines through indicators, such as Figure 1 As shown, the bottom of the meter 1 is connected to one end of the connecting rod 3 through the connecting plate 2, and the other end of the connecting rod 3 is connected to the sensor 4. The middle of the connecting rod 3 is a hollow structure for placing wires. The meter 1 and the connecting plate 2, and the connecting plate 2 and the connecting rod 3 are fixed by screws.
[0025] Instrument 1 Figure 2 As shown, it includes an intermediate body 1-7, the front end of the intermediate body 1-7 is screwed with an instrument front cover 1-6, the instrument front cover 1-6 is provided with a tempered glass keyboard board 1-1, the interior of the instrument front cover 1-6 and the tempered glass keyboard board 1-1 are provided with a touch screen circuit board 1-2, the interior of the instrument front cover 1-6 and the intermediate body 1-7 are provided with a circuit control board 1-3 and a terminal circuit board 1-4; the rear end of the intermediate body 1-7 is screwed with an instrument back cover 1-8, the interior of the instrument back cover 1-8 and the intermediate body 1-7 are provided with a battery compartment circuit board 1-5; the battery compartment circuit board 1-5, the terminal circuit board 1-4, the circuit control board 1-3, and the touch screen circuit board 1-2 are connected by circuits. The circuit control board 1-3 and the touch screen circuit board 1-2 are connected by a pin-to-socket connection, and the circuit control board 1-3 and the touch screen circuit board 1-2 are glued and fixed inside the instrument front cover 1-6. The circuit control board 1-3 and the touch screen circuit board 1-2 are connected by a flat cable.
[0026] Sensor 4 Figure 3As shown, it includes a sensor housing 4-1, an induction coil 4-2 is arranged in the sensor housing 4-1, plugs 4-3 are arranged at the left and right ends of the sensor housing 4-1, and a support leg 4-4 is arranged at the lower part of the sensor housing. The support leg 4-4 is provided with a bracket hole, and the fixing steel belt is passed into the support leg hole under the support leg 4-4 and surrounds the pipeline for fixing. The housing 4-1 is arranged along the length direction of the pipeline, and the axis of the internal induction coil 4-2 is parallel to the axis of the pipeline. The antenna part of the sensor 4 is designed, and the coil is wound using an alloy 1J79 tube. The winding wire diameter is 0.19MM. The winding resistor is 1K., and then placed in a stainless steel shell, and the two antenna wires are led out and poured into the stainless steel shell with glue. The method of pouring glue is to pour it into the stainless steel shell through the plug 4-3 on the side of the stainless steel body, and then weld it.
[0027] The internal circuit of instrument 1 and sensor 4 is as follows Figure 4-5 As shown, the signal output end of the induction coil 4-2 is connected to two amplifiers, a filter and a level conversion circuit in sequence, and the output signal of the level conversion circuit is transmitted to the processor; the output signal of the processor is two-way, one way is connected to the external PLC control line after passing through the terminal circuit, and the other way is connected to the display digital tube through the relay; the touch screen circuit outputs the signal to the processor; the power supply circuit supplies power to the entire internal circuit.
[0028] The power supply circuit includes a three-terminal low-power voltage regulator and a voltage converter. The signal amplifier part is designed to amplify the collected signal using the instrument amplifier 1, and then connected to the amplifier OP07. The output end of the amplifier OP07 is connected to the input end of the low-pass filter. The filter design processor 1 signal output is connected to the signal low-frequency bandpass filter signal frequency input end. The passband frequency of this low-frequency bandpass filter is 24HZ, but it can be applied at 24HZ. The problem of inaccurate frequency adjustment is solved. The low-frequency bandpass filter signal frequency input end is connected to the level conversion resistor. The output end of the level conversion resistor is connected to the AD conversion input end of the second processor, and then filtered by software. Analyze and determine whether it is a real signal. When the second processor receives the signal, it displays the passing time and the number of passing times. The input end of the transistor is connected to the IO interface of the first single-chip microcomputer, and the output end of the transistor is connected to the control end of the normally open relay to control the relay to close.
Claims
1. A non-insertion oil pipeline through indicator, characterized in that: The bottom of the instrument (1) is connected to one end of a connecting rod (3) via a connecting plate (2), and the other end of the connecting rod (3) is connected to a sensor (4); The instrument (1) comprises an intermediate body (1-7), the front end of which is screwed with an instrument front cover (1-6). A tempered glass keyboard panel (1-1) is provided on the instrument front cover (1-6); a touch screen circuit board (1-2) is provided between the interior of the instrument front cover (1-6) and the tempered glass keyboard panel (1-1); a circuit control board (1-3) and a wiring terminal circuit board (1-4) are provided between the interior of the instrument front cover (1-6) and the intermediate body (1-7); an instrument rear cover (1-8) is screwed onto the rear end of the intermediate body (1-7); a battery compartment circuit board (1-5) is provided between the interior of the instrument rear cover (1-8) and the intermediate body (1-7); the battery compartment circuit board (1-5), the wiring terminal circuit board (1-4), the circuit control board (1-3), and the touch screen circuit board (1-2) are The circuits are connected; The sensor (4) comprises a sensor housing (4-1), an induction coil (4-2) is arranged inside the sensor housing (4-1), plugs (4-3) are arranged at the left and right ends of the sensor housing (4-1), and a support foot (4-4) is arranged at the bottom of the sensor housing.
2. The non-insertion oil pipeline passing indicator according to claim 1, characterized in that: The internal circuits of the instrument (1) and the sensor (4) are as follows: the signal output end of the induction coil (4-2) is connected to two amplifiers, a filter and a level conversion circuit in sequence, and the output signal of the level conversion circuit is transmitted to the processor; the output signal of the processor is in two paths, one of which is connected to the external PLC control line after passing through the wiring terminal circuit, and the other is connected to the display digital tube through the relay; the touch screen circuit outputs the signal to the processor; The power circuit provides power to the entire internal circuit.
3. The non-insertion oil pipeline passing indicator according to claim 1, characterized in that: The circuit control board (1-3) and the touch screen circuit board (1-2) are connected by a pin-to-socket connection method, and the circuit control board (1-3) and the touch screen circuit board (1-2) are adhesively fixed inside the instrument front cover (1-6).
4. The non-insertion oil pipeline passing indicator according to claim 1, characterized in that: The circuit control board (1-3) and the touch screen circuit board (1-2) are connected via a flat cable.
5. The non-insertion oil pipeline passing indicator according to claim 1, characterized in that: The instrument (1) and the connecting plate (2), and the connecting plate (2) and the connecting rod (3) are fixed by screws.
6. The non-insertion oil pipeline passing indicator according to claim 1, characterized in that: The support leg (4-4) is provided with a bracket hole, and the fixing steel belt is passed into the support leg hole below the support leg (4-4) and surrounds the pipeline for fixing.
7. The non-insertion oil pipeline passing indicator according to claim 1, characterized in that: The shell (4-1) is arranged along the length direction of the pipeline, and the axis of the internal induction coil (4-2) is parallel to the axis of the pipeline.