Dredging and on-line pressure measuring device for pressure guide pipe of pressure detection meter on pressure pipeline

Abstract

The utility model relates to the technical field of dredging of a pressure guide pipe on a pressure pipeline, and particularly discloses a dredging and on-line pressure measuring device for a pressure guide pipe of a pressure detection meter on the pressure pipeline, the pressure guide pipe is arranged on the side wall of the pressure pipeline, and the device is arranged on an instrument panel fixing seat on the pressure guide pipe. The device comprises a connecting piece, an oil cylinder barrel, a puncture assembly and a control unit, the lower portion of the connecting piece is connected with an instrument panel fixing base, the upper portion of the connecting piece is connected with the oil cylinder barrel, a piston rod is arranged in the oil cylinder barrel, a channel is formed in the piston rod, and a first through hole communicated with the channel is formed in the side wall of the piston rod; the puncture assembly comprises a pipe body, a plurality of gas pipelines and a puncture head which are sequentially arranged from top to bottom, the pipe body is fixedly arranged at the bottom of the piston rod, and an inner cavity of the pipe body is communicated with the channel. According to the device, the piston rod in the oil cylinder barrel is controlled to move downwards through the oil cylinder, so that the puncture assembly is driven to move downwards and extend into the pressure guiding pipe, and scales or scabs at the communication position of the pressure guiding pipe and the pressure pipeline are punctured.

Description

Technical Field

[0001] The utility model belongs to the technical field of dredging the pressure-conducting pipe on a pressure pipeline, in particular to a dredging and online pressure measuring device for the pressure-conducting pipe of a pressure detection gauge on a pressure pipeline. Background Art

[0002] The pressure detection and lead pipes on the existing flare acid gas and coal gas transmission pressure pipelines are prone to blockage during the production process, which causes distortion of the pressure measurement of the online pressure detection gauge of the pressure pipeline. At the same time, there are great safety hazards during pipeline operation and maintenance. In particular, before the corresponding pressure pipeline is repaired, the medium pressure in the pressure pipeline will be tested, and the blockage of the lead pipe will cause the medium pressure in the pressure pipeline to be misjudged, causing the operator to work under pressure, which will lead to very dangerous and serious consequences.

[0003] Therefore, it is necessary to regularly dredge the pressure pipe to confirm the actual pressure of the pressure pipe online before maintenance. If manual dredging is used, it is illegal and has great safety risks. Therefore, it is urgently necessary to design a dredging and online pressure measuring device for the pressure detection gauge pressure pipe on the pressure pipeline to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a device for unclogging and measuring pressure on the pressure pipe of a pressure detection gauge on a pressure pipeline, which solves the problem that the pressure pipe is blocked, resulting in an error in the medium pressure detection in the pressure pipeline, causing the operator to work under pressure and causing danger, and the problem that manual unclogging is illegal and has great safety risks.

[0005] In order to solve the above technical problems, the utility model provides a device for dredging and online pressure measurement of a pressure detection gauge on a pressure pipeline, the device is installed on an instrument panel fixing seat on the side wall of the pressure pipeline, the device comprises a connecting piece, a cylinder body, a puncture assembly and a control unit, the lower part of the connecting piece is connected to the instrument panel fixing seat, and the upper part is connected to the cylinder body, a piston rod is arranged in the cylinder body, a channel is arranged in the piston rod, and a first through hole connected to the channel is opened on the side wall thereof, the puncture assembly comprises a pipe body, a plurality of gas pipes and a puncture head which are arranged in sequence from top to bottom, the pipe body is fixedly arranged at the bottom of the piston rod, the inner cavity of the pipe body is connected to the channel, a plurality of pressure sensors are installed at the bottom of the pipe body, the plurality of pressure sensors are connected to the control unit, one end of each of the gas pipes is arranged at the bottom of the pipe body, and the other end is extended after passing through the channel and the cylinder body, and the puncture head is fixed at the bottom of the pipe body.

[0006] Furthermore, the bottom of the tube body is conical, and a plurality of first installation cavities for installing pressure sensors are opened on the conical surface of the bottom of the tube body. A contact piece is fixed at the opening of the first installation cavity, and the contact piece is used to trigger the pressure sensor. The connecting line of the pressure sensor passes through the first installation cavity, the inner cavity of the tube body, the channel and the first through hole in sequence, and then extends out to be connected to the control unit.

[0007] Furthermore, the number of the pressure sensors is at least two.

[0008] Furthermore, the connecting piece is a nut sleeve or a flange.

[0009] Furthermore, the lower outer wall of the connecting piece is connected to the inner wall of the instrument panel fixing seat through a threaded connection, and the upper inner wall is connected to the lower outer wall of the cylinder body through a threaded connection.

[0010] Furthermore, the number of the gas pipelines is at least four, and the gas outlet ends thereof are evenly distributed at the bottom of the tube body, and the blown gas is used to blow away dirt or scabs on the conical surface at the bottom of the tube body and the puncture head.

[0011] Furthermore, the gas pipeline is made of high-pressure resistant resin material.

[0012] Furthermore, a high-temperature seal is provided in the channel, and a second through hole is provided on the high-temperature seal for the gas pipeline and the connecting line of the pressure sensor to pass through.

[0013] The beneficial effects of the utility model are as follows: the device of the utility model controls the piston rod in the cylinder body downward through the oil cylinder to drive the puncture assembly downward through the pressure-inducing pipe and then enter the pressure pipeline to puncture the scale or scab at the connection between the pressure-inducing pipe and the pressure pipeline. The end of the piston rod is connected to a hydraulic system, and the hydraulic system is connected to a remote controller. The remote controller is connected to the control unit so that the control unit can remotely control the hydraulic system to drive the piston rod and the puncture assembly to dredge the interface between the pressure-inducing pipe and the pressure pipeline. The sealed and automatic operation form effectively prevents the problem of medium gas leakage after dredging causing harm to the environment and personnel;

[0014] A channel is provided in the piston rod to facilitate the connection of the pressure sensor connection line and the gas pipeline. During the up and down movement of the piston rod, the pressure sensor connection line and the gas pipeline can be extended and retracted in the channel, which can protect the pressure sensor connection line and the gas pipeline while they are being retracted, and effectively prevent the pressure sensor connection line and the gas pipeline from contacting the oil in the cylinder body and causing cavitation.

[0015] One end of the gas pipeline is inserted into the conical surface at the bottom of the pipe body, and the other end extends out of the oil cylinder body and is connected to the gas transmission device, so that the dirt on the conical surface of the pipe body and the puncture head can be effectively blown off to improve the monitoring accuracy of the pressure sensor;

[0016] A pressure sensor is installed in the first installation cavity on the conical surface at the bottom of the tube body, and a contact piece is fixed at the opening of the first installation cavity. When the puncture assembly passes through the pressure-inducing tube and extends into the pressure pipeline, the pressure in the pressure pipeline triggers the contact piece, and the contact piece contacts the pressure sensor under the driving force of the pressure. The pressure sensor converts the received pressure into a signal and transmits it to the control unit. The control unit analyzes the received signal and issues an alarm for the received dangerous pressure signal to remind the operator to stay away from the pressure pipeline, effectively avoiding the occurrence of hidden dangers to personnel safety.

[0017] A sleeve is installed in the first through hole, and a curved surface is provided at the connection between the sleeve and the channel to facilitate the connection of the pressure sensor connecting line and the gas pipeline. The shell of the hydraulic system connected to the piston rod wraps the cylinder body and the piston rod inside to ensure the sealing between the cylinder body and the tube body to prevent gas outflow from causing environmental pollution and damage to personnel safety.

[0018] A high-temperature seal is provided in the channel, and a second through hole is provided on the high-temperature seal for the gas pipeline and the connecting line of the pressure sensor to pass through, thereby effectively preventing the medium in the pressure pipeline from flowing out due to back pressure, effectively improving the sealing performance of the dredging and online pressure measuring device, and effectively avoiding the problem of medium backflow or back pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a sectional view of the overall structure of a device for unblocking and measuring pressure on the pressure pipe of a pressure detection gauge on a pressure pipeline according to the utility model;

[0021] Figure 2 This is a disconnection diagram of the piston rod and the upper part of the puncture assembly of a device for unblocking and online pressure measurement of a pressure detection gauge on a pressure pipeline;

[0022] Figure 3 It is a disconnection diagram of the lower part of a puncture assembly of a pressure detection gauge on a pressure pipeline and an online pressure measuring device for unblocking the pressure pipe of the pressure detection gauge on the pressure pipeline;

[0023] Figure 4It is a cross-sectional view of the oil cylinder body of a device for dredging and online pressure measurement of a pressure detection gauge on a pressure pipeline;

[0024] In the figure: 1-device, 2-pressure pipeline, 3-instrument panel fixing seat, 4-pressure pipe, 11-connecting piece, 12-cylinder barrel, 13-puncture assembly, 121-piston rod, 131-tube body, 132-puncture head, 133-pressure sensor, 134-gas pipeline, 135-contact piece, 1211-channel, 1212-first through hole, 1311-first installation cavity. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings of the utility model specification to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0026] In a specific embodiment of the present invention, Figure 1-4 As shown, a device for clearing and measuring pressure on the pressure pipe 4 of the pressure detection gauge on the pressure pipeline is specifically disclosed. The pressure pipe 4 is arranged on the side wall of the pressure pipeline 2. The device 1 is installed on the instrument panel fixing seat 3 on the pressure pipe 4. The pressure pipe 4 and the instrument panel fixing seat 3 can be an integrated structure or a split structure. The device 1 includes a connector 11, a cylinder barrel 12, a puncture assembly 13 and a control unit. The connector 11 is one of a nut sleeve or a flange. The lower outer wall of the connector 11 is connected to the inner wall of the instrument panel fixing seat 3 by a thread, and the upper inner wall is connected to the lower outer wall of the cylinder barrel 12 by a thread, so that the cylinder barrel 12 can be quickly detached from the instrument panel fixing seat 3 to improve the disassembly efficiency of the device.

[0027] A piston rod 121 is provided in the cylinder body 12, a channel 1211 is provided in the piston rod 121, and a first through hole 1212 connected to the channel 1211 is opened on its side wall. A sliding sleeve is installed in the first through hole 1212 to facilitate the connection of the pressure sensor 133 connecting line and the gas pipeline 134. At the same time, it can also ensure the sealing of the cylinder body 12 and the tube body 131 to prevent the outflow of gas and cause environmental pollution and damage to personnel safety.

[0028] A high-temperature seal is provided in the channel 1211, and a second through hole is provided on the high-temperature seal for the gas pipeline and the connecting line of the pressure sensor to pass through, and the high-temperature seal is located at the lower part of the channel 1211. The high-temperature seal can be a polytetrafluoroethylene seal, a graphite seal or a metal seal, thereby effectively preventing the back pressure of the medium in the pressure pipeline from flowing out, effectively improving the sealing performance of the dredging and online pressure measuring device, and effectively avoiding the problem of medium backflow or back pressure.

[0029] The end of the piston rod 121 is connected to a hydraulic system, and the hydraulic system is connected to a remote controller. The remote controller is connected to the control unit, so that the control unit can remotely control the hydraulic system to drive the piston rod 121 and the puncture assembly 13 to dredge the interface between the pressure pipe 4 and the pressure pipeline 2, effectively preventing the leakage of medium gas after dredging from causing harm to the environment and personnel;

[0030] The puncture assembly 13 includes a tube body 131, a plurality of gas pipelines 134 and a puncture head 132 which are arranged in sequence from top to bottom. The tube body 131 is fixedly arranged at the bottom of the piston rod 121. The inner cavity of the tube body 131 is connected to the channel 1211. A plurality of pressure sensors 133 are installed at the bottom of the tube body 131. The number of the pressure sensors 133 is at least two. The plurality of pressure sensors 133 are all connected to the control unit. One end of each gas pipeline 134 is penetrated at the bottom of the tube body 131, and the other end extends out after passing through the channel 1211 and the cylinder body 12. The puncture head 132 is fixed at the bottom of the tube body 131.

[0031] The bottom of the tube body 131 is conical, and a plurality of first installation cavities 1311 for installing the pressure sensor 133 are provided on the conical surface of the bottom of the tube body 131. A contact piece 135 is fixed at the opening of the first installation cavity 1311. The thickness of the contact piece 135 can be adjusted as needed. The contact piece 135 is used to trigger the pressure sensor 133. The connecting line of the pressure sensor 133 passes through the first installation cavity 1311, the inner cavity of the tube body 131, the channel 1211 and the first through hole 1212 in sequence and then extends out to be connected with the control unit. The pressure sensor 133 is installed in the first installation cavity 1311, and its contact end can be contacted with the contact piece 135. At this time, the contact piece 135 is made into a thin sheet type, and the two ends of the contact piece 135 are fixed to the conical surface of the tube body 131, so that the pressure of the medium can push the contact piece 135 to contact with the contact end of the pressure sensor 133 to trigger the pressure sensor 133 test;

[0032] The contact piece 135 can also be made into a thick plate, fixed between the contact piece 135 and the conical surface of the tube body 131, and the contact end of the pressure sensor 133 is screwed on the contact piece 135 and extends out of the contact piece 135 to facilitate the medium pressure to trigger the pressure sensor 133.

[0033] The piston rod 121 is provided with a channel 1211 to facilitate the connection of the pressure sensor 133 connection line and the gas pipeline 134. When the piston rod 121 moves up and down, the pressure sensor 133 connection line and the gas pipeline 134 can be extended and retracted in the channel 1211, which can protect the pressure sensor 133 connection line and the gas pipeline 134 while they are being retracted, thereby effectively preventing the pressure sensor 133 connection line and the gas pipeline 134 from contacting the oil in the cylinder barrel 12 and causing erosion.

[0034] There are at least four gas pipes 134 , and their gas outlet ends are evenly distributed at the bottom of the tube body 131 . The blown gas is used to blow away dirt or scabs on the conical surface at the bottom of the tube body 131 and the puncture head 132 to improve the monitoring accuracy of the pressure sensor 133 .

[0035] The gas pipeline 134 is made of high-pressure resistant resin. To ensure that the connection line between the gas pipeline 134 and the pressure sensor 133 is not torn off during the up and down movement of the piston rod 121, the gas pipeline 134 and the pressure sensor 133 are designed to be spirally wound at the telescopic movable part.

[0036] The workflow of this utility model:

[0037] When the junction of the pressure pipe 2 and the pressure pipe 4 needs to be unblocked, the cylinder barrel 12 of the device 1 is screwed into the instrument panel fixing seat 3 on the pressure pipe 4 through the connecting piece 11, which effectively improves the installation speed of the device 1. The control unit sends a command to the remote controller, and the remote controller controls the hydraulic system to work. The hydraulic system controls the piston rod 121 in the cylinder barrel 12 to move downward, and the piston rod 121 drives the puncture assembly 13 downward, so that the puncture head 132 passes through the inner hole of the instrument panel fixing seat 3 and then extends into the pressure pipe 2 to puncture the scale or scab at the connection between the pressure pipe 4 and the pressure pipe 2. At the same time, the part of the pipe body 131 that penetrates into the pressure pipe 2 is pressed. Under the pressure in the pressure pipe 2, the contact piece 135 is deformed to trigger the pressure sensor 133. The pressure sensor 133 transmits the received pressure value to the control unit. The control unit analyzes the data after receiving it. When the pressure value will cause the pressure pipe 2 to burst, the control unit quickly sends an instruction to the remote controller to stop the operation, and sends an alarm signal to the operator to keep him away from the work site, so as to avoid the leakage of medium gas after dredging, which may cause harm to the environment and personnel, and the back pressure in the pressure pipe 2 may cause the device 1 to burst and cause casualties, thereby improving the safety factor of the operator and the monitoring capability of the device 1, so as to prevent the occurrence of major safety risks as early as possible.

[0038] When the piston rod 121 moves up and down in the cylinder body 12, the gas pipeline 134 is made of high-pressure resistant resin and is a soft material. A sliding sleeve is installed in the first through hole 1212 on the outer wall of the piston rod 121. The gas pipeline 134 and the pressure sensor 1 are inserted in the sliding sleeve. The piston rod 121 moves up and down, and the connecting line parts of the gas pipeline 134 and the pressure sensor 133 located on the upper part of the high-temperature seal are straightened or folded in the channel 1211 of the piston rod 121 to meet the up and down movement requirements. While the connecting line of the pressure sensor 133 and the gas pipeline 134 are summarized, the two can also be protected, effectively preventing the connecting line of the pressure sensor 133 and the gas pipeline 134 from contacting the oil body in the cylinder body 12 and causing cavitation.

[0039] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A device for unclogging and online pressure measurement of a pressure pipe of a pressure detection gauge on a pressure pipe, wherein the pressure pipe (4) is arranged on the side wall of the pressure pipe (2), and the device (1) is installed on a panel fixing seat (3) on the pressure pipe (4), characterized in that: The device (1) comprises a connecting piece (11), a cylinder body (12), a puncture assembly (13) and a control unit. The lower part of the connecting piece (11) is connected to the instrument panel fixing seat (3), and the upper part is connected to the cylinder body (12). A piston rod (121) is provided in the cylinder body (12). A channel (1211) is provided in the piston rod (121), and a first through hole (1212) communicating with the channel (1211) is opened on the side wall. The puncture assembly (13) comprises a tube body (131), a plurality of gas pipelines (134) and a puncture head (132) which are arranged in sequence from top to bottom. The tube body (131) is fixedly arranged at the bottom of the piston rod (121). The inner cavity of the tube body (131) is communicated with the channel (1211). A plurality of pressure sensors (133) are installed at the bottom of the tube body (131). The plurality of pressure sensors (133) are connected to the control unit. One end of each of the gas pipelines (134) is arranged at the bottom of the tube body (131), and the other end of each gas pipeline (134) passes through the channel (1211) and the cylinder body (12) and then extends out. The puncture head (132) is fixed at the bottom of the tube body (131).

2. A device for clearing and measuring pressure on the pressure pipe of a pressure detection gauge on a pressure pipeline according to claim 1, characterized in that: The bottom of the tube body (131) is conical, and a plurality of first installation cavities (1311) for installing the pressure sensor (133) are provided on the conical surface of the bottom of the tube body (131). A contact piece (135) is fixed at the opening of the first installation cavity (1311), and the contact piece (135) is used to trigger the pressure sensor (133). The connection line of the pressure sensor (133) passes through the first installation cavity (1311), the inner cavity of the tube body (131), the channel (1211) and the first through hole (1212) in sequence, and then extends out to be connected with the control unit.

3. The device for clearing and measuring pressure on the pressure pipe of the pressure detection gauge on the pressure pipeline according to claim 1 is characterized in that: The number of the pressure sensors (133) is at least two.

4. The device for clearing and measuring pressure on the pressure pipe of the pressure detection gauge on the pressure pipeline according to claim 1 is characterized in that: The connecting piece (11) is one of a nut sleeve and a flange.

5. The device for clearing and measuring pressure on the pressure pipe of the pressure detection gauge on the pressure pipeline according to claim 1, characterized in that: The lower outer wall of the connecting piece (11) is connected to the inner wall of the instrument panel fixing seat (3) via threads, and the upper inner wall is connected to the lower outer wall of the oil cylinder body (12) via threads.

6. The device for clearing and online pressure measurement of the pressure pipe of the pressure detection gauge on the pressure pipeline according to claim 1, characterized in that: The number of the gas pipelines (134) is at least four, and the gas outlet ends thereof are evenly distributed at the bottom of the tube body (131), and the blown gas is used to blow away dirt or scabs on the conical surface at the bottom of the tube body (131) and the puncture head (132).

7. The device for clearing and measuring pressure on the pressure pipe of the pressure detection gauge on the pressure pipeline according to claim 1 is characterized in that: The gas pipeline (134) is made of high-pressure resistant resin.

8. The device for clearing and measuring pressure on the pressure pipe of the pressure detection gauge on the pressure pipeline according to claim 1 is characterized in that: A high-temperature seal is provided in the channel (1211), and a second through hole is provided on the high-temperature seal for the gas pipeline (134) and the connecting line of the pressure sensor (133) to pass through.

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