Shale gas pressure guide pipe pressure measuring device

Abstract

The utility model relates to the technical field of oil and gas measurement, and discloses a shale gas pressure guide pipe pressure measuring device which comprises a pressure guide pipe and a supporting frame, the pressure guide pipe is connected to a pressure guide connector of an ultrasonic flowmeter and comprises a horizontal section and a vertical section, and the vertical section of the pressure guide pipe is higher than a shale gas main pipeline. The upper end of the pressure guiding pipe is connected with a pressure transmitter, a first stop valve is installed between the pressure guiding connector and the pressure guiding pipe, a second stop valve is installed between the pressure transmitter and the pressure guiding pipe, an emptying valve is installed on the portion, between the first stop valve and the second stop valve, of the pressure guiding pipe, and the emptying valve is connected with the pressure guiding pipe through a flange. The pressure transmitter is fixed on the supporting frame, and the working time of field verification or the efficiency of direct replacement is greatly improved through the pressure measuring device of the pressure guide pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas measurement technical field, concretely relates to a shale gas guide pressure pipe pressure measuring device. BACKGROUND

[0002] Shale gas main pipeline measures the flow in the pipeline through ultrasonic flowmeter, and in addition, the pressure on the shale gas main pipeline also needs to be measured, and now the ultrasonic flowmeter is provided with a pressure leading connector, the pressure in the shale gas main pipeline is connected with the guide pressure pipe on the pressure leading connector of the ultrasonic flowmeter, the shale gas in the main pipeline is led out through the guide pressure pipe, a pressure transmitter is installed on the guide pressure pipe, the shale gas pressure in the guide pressure pipe is measured through the pressure transmitter, and thus the pressure in the shale gas main pipeline is measured.

[0003] Because the shale gas is corrosive, the pressure transmitter needs to be regularly disassembled, maintained and compulsorily calibrated as a trade measuring instrument, and now there is only one stop valve on the guide pressure pipe for connecting the pressure transmitter, when disassembling and repairing, because there is still high shale gas in the guide pressure pipe, and because the position of the shale gas main pipeline is complicated, in order to avoid that there is more shale gas in the guide pressure pipe, the guide pressure pipe is made as short as possible during installation, which leads to that the position of the pressure transmitter is low, and the construction space is limited during disassembly. UTILITY MODEL CONTENT

[0004] The utility model intends to provide a shale gas guide pressure pipe pressure measuring device to solve the problem that the instrument and apparatus for pressure measurement are inconvenient to disassemble.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a shale gas guide pressure pipe pressure measuring device, including pressure leading pipe and support frame connected on shale gas main pipeline, the pressure leading pipe is connected on the pressure leading connector of ultrasonic flowmeter, the vertical height of pressure leading pipe is greater than the upper edge of shale gas main pipeline, the upper end of pressure leading pipe is connected with pressure transmitter, the first stop valve is installed between pressure leading connector and pressure leading pipe, the second stop valve is installed between pressure transmitter and pressure leading pipe, the vent valve is installed on the pressure leading pipe between the first stop valve and the second stop valve, the vent valve and pressure leading pipe are connected through flange, and the pressure transmitter is fixed on the support frame.

[0006] Beneficial effect: 1, the pressure leading pipe is led out from the lower shale gas main pipeline to the position higher than the shale gas main pipeline, so that when observing the instrument state of the pressure leading pipe, the line of sight is not interfered by the shale gas main pipeline, when disassembling the pressure transmitter, the connecting part between the pressure transmitter and the pressure leading pipe can be directly disassembled, and the problem that the disassembly construction position is limited and disassembly is inconvenient is solved.

[0007] 2、In the pressure conduit is provided with first stop valve, second stop valve and vent valve, when need to disassemble, first, let shale gas no longer flow into the pressure conduit, then close the second stop valve, open the vent valve to release the pressure in the pressure conduit, then open the second stop valve, release the pressure in the pressure transmitter, through two release, avoid directly open the vent valve, all release the instantaneous force, cause the shale gas in the pressure conduit to appear negative pressure state to the pressure transmitter causes reverse impact damage.

[0008] 3、The vent valve and the pressure conduit are connected by flanges, when need to be tested, can be disassembled from the vent valve position, let the pressure conduit and the stop valve together with the pressure transmitter, so that it can be convenient to test the process, repeatedly install the stop valve and other components, in addition, do not need to frequently disassemble the connection between the pressure conduit and the pressure transmitter, avoid the connection of the pressure transmitter is not stable, make the whole pressure transmitter need to be replaced.

[0009] 4、The support frame supports the pressure transmitter, avoids the pressure transmitter to produce pressure to the upwardly extending pressure conduit, causes the pressure conduit to bend.

[0010] 5、The support frame is directly connected to the shale gas main pipeline, changes the previous method of supporting the transmitter on the ground by supporting rod, avoids the problem that when the supporting rod is present ground subsidence, causes the support rod to support the problem.

[0011] Further, the support frame is provided with a protective rod, and the protective rod is located on both sides of the pressure conduit. The protective rod protects the pressure conduit and avoids damage to the pressure conduit during disassembly.

[0012] Further, it further includes a clamp, the clamp is provided with two, two clamps are respectively fixedly installed on the shale gas main pipeline on both sides of the ultrasonic flowmeter, and the two clamps are respectively fixedly installed on the shale gas main pipeline on both sides of the ultrasonic flowmeter. The two connecting arms are fixedly connected through the base and the support frame. The two clamps are connected to the shale gas main pipeline, so as to avoid the position of the ultrasonic flowmeter coaxially connected to the shale gas main pipeline. The two clamps form two support points to ensure the stability of the support.

[0013] Further, the connecting arm and the clamp are provided with a reinforcing plate, the connecting arm extends from the clamp to form a cantilever, and the reinforcing plate is used to improve the stress between the connecting arm and the clamp.

[0014] Further, the two clamps are provided with a layer of rubber lining on the inner side. Generally, the surface of the shale gas main pipeline is provided with a layer of rust-proof coating. The rubber lining is used to avoid scratches on the shale gas main pipeline caused by the clamp.

[0015] Finally, the support frame is equipped with an electrostatic connection post, which is connected to the ground via a wire. A wire is connected to the electrostatic connection post to eliminate static electricity generated on the support frame and the pressure transmitter. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pipeline components of the shale gas pressure measuring device in the embodiment.

[0017] Figure 2 This is a structural diagram of the installation of the shale gas pressure measuring device in the embodiment.

[0018] The reference numerals in the accompanying drawings include: 1. Shale gas main pipeline; 2. Clamp; 21. Rubber liner; 22. Reinforcing plate; 23. Connecting arm; 3. Support frame; 31. Protective rod; 4. Pressure tapping pipe; 5. Vent valve; 6. Second shut-off valve; 7. Pressure transmitter; 8. First shut-off valve; 9. Ultrasonic flow meter. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The basic implementation examples are as follows: Figure 1 and Figure 2 As shown: A shale gas pressure measuring device includes a pressure-sensing pipe 4 and a support frame 3 connected to the shale gas main pipeline 1. The pressure-sensing pipe 4 is connected to the pressure-sensing connector of an ultrasonic flow meter 9. The vertical height of the pressure-sensing pipe 4 is greater than the upper edge of the shale gas main pipeline 1. A pressure transmitter 7 is connected to the upper end of the pressure-sensing pipe 4. A first shut-off valve 8 is installed between the pressure-sensing connector and the pressure-sensing pipe 4. A second shut-off valve 6 is installed between the pressure transmitter 7 and the pressure-sensing pipe 4. A vent valve 5 is installed on the pressure-sensing pipe 4 between the first shut-off valve 8 and the second shut-off valve 6. The vent valve 5 is connected to the pressure-sensing pipe 4 through a flange. The pressure transmitter 7 is fixed on the support frame 3.

[0021] The support frame 3 is equipped with protective rods 31, which are located on both sides of the pressure tapping pipe 4. The protective rods 31 protect the pressure tapping pipe 4, preventing damage during disassembly. Two clamps 2 are provided, each fixedly installed on the shale gas main pipeline 1 on both sides of the ultrasonic flow meter 9. One end of each clamp extends into a connecting arm 23, which is fixedly connected to the support frame 3 via a base. The two clamps 2 are used to connect to the shale gas main pipeline 1 to avoid the location of the ultrasonic flow meter 9, forming two support points to ensure the stability of the support.

[0022] A reinforcing plate 22 is provided between the connecting arm 23 and the clamp 2, and the connecting arm 23 extends from the clamp to form a cantilever. A rubber liner 21 is provided on the inner side of both clamps.

[0023] The support frame 3 is provided with an electrostatic connection column, which is communicated with the ground through a wire.

[0024] Installation of pressure measuring pipeline and device: connect the first stop valve 8 on the pressure lead-in joint of the ultrasonic flowmeter 9, connect the pressure lead-in pipe 4 on the first stop valve 8, and connect a section of pressure lead-in pipe 4 with a flange on the outlet of the first stop valve 8; then measure the size of the upwardly extending pressure lead-in pipe 4, so that the height of the pressure transmitter 7 can exceed the shale gas main pipeline 1, connect the upwardly extending pressure lead-in pipe 4 to the vent valve 5 through the flange, and then connect the second stop valve 6 after the vent valve 5. Install the pressure transmitter 7 at the end of the second stop valve 6. This process completes the installation of the pressure measuring pipeline and device.

[0025] Installation of support frame and clamp: first fix two clamps 2 on the shale gas main pipeline 1, avoid the ultrasonic flowmeter 9 between the two clamps 2, and install the vertical support frame 3 on the connecting arms 23 of the two clamps 2.

[0026] Place the pressure lead-in pipe 4 in the guardrail 31, and finally fix the pressure transmitter 7 with the support frame 3.

[0027] When disassembly and inspection are needed, close the first and second stop valves, open the vent valve 5, release the high-pressure shale gas in the pressure lead-in pipe 4, then open the second stop valve 6, and release the shale gas in the pressure transmitter 7. Then disassemble the flange connection part on the pressure lead-in pipe 4, disassemble the connection between the pressure transmitter 7 and the support frame, and then the pressure transmitter 7 can be disassembled for inspection.

[0028] The above is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A shale gas pigging conduit pressure measurement device, characterized by: The utility model provides a shale gas main pipeline pressure transmission device, which comprises a pressure transmission pipe and a support frame connected to the shale gas main pipeline, the pressure transmission pipe is connected to a pressure transmission joint of an ultrasonic flowmeter, the vertical height of the pressure transmission pipe is greater than the upper edge of the shale gas main pipeline, a pressure transmitter is connected to the upper end of the pressure transmission pipe, a first stop valve is arranged between the pressure transmission joint and the pressure transmission pipe, a second stop valve is arranged between the pressure transmission pipe and the pressure transmitter, a vent valve is arranged on the pressure transmission pipe between the first stop valve and the second stop valve, the vent valve is connected to the pressure transmission pipe through a flange, and the pressure transmitter is fixed to the support frame.

2. The shale gas pigging conduit pressure measurement device of claim 1, wherein: The support frame is provided with a protection rod, and the protection rod is located on both sides of the pressure transmission pipe.

3. The shale gas pigging conduit pressure measurement device of claim 2, wherein: The utility model also comprises two hoops, the two hoops are fixedly installed on the shale gas main pipeline on both sides of the ultrasonic flowmeter, one end of each of the two hoops extends a connecting arm, and the two connecting arms are fixedly connected to the support frame through a base.

4. The shale gas pigging conduit pressure measurement device of claim 3, wherein: A reinforcing plate is arranged between the connecting arm and the hoop.

5. The shale gas pigging conduit pressure measurement device of claim 4, wherein: The inner side of each of the two hoops is provided with a layer of rubber lining.

6. The shale gas pigging conduit pressure measurement device of claim 5, wherein: The support frame is provided with an electrostatic connecting column, and the electrostatic connecting column is connected to the ground through a wire.

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