Wellhead flat valve position state detection device and detection method based on wireless transmission

Abstract

The invention relates to the technical field of wellhead flat valve position detection devices, in particular to a wireless transmission wellhead flat valve position state detection device and method.The wellhead flat valve position state detection device comprises a detection structure, the detection structure comprises a shell, the shell is detachably installed on a flat valve body through an installation structure, and a wireless signal transmitter is installed on the upper side of the right portion of the shell; the upper side of the flat valve body is provided with an inside-outside through long seam, a valve element is arranged in the flat valve body, the shell can cover the long seam, and a valve element left limit position sensor and a valve element right limit position sensor which are used for monitoring the position of the valve element are arranged on the lower side of the shell corresponding to the position of the long seam. The flat valve is reasonable and compact in structure and convenient to use, the shell is installed on a flat valve body through the installation structure, the position of a valve element is detected through the valve element left limit position sensor, the valve element right limit position sensor and the valve element axial displacement sensor, and the position is transmitted to the single-chip microcomputer through the wireless signal transmitter to judge the opening and closing state of the flat valve.

Description

Technical Field

[0001] This invention relates to the technical field of wellhead flat valve position detection devices, specifically a wireless transmission wellhead flat valve position status detection device and detection method. Background Technology

[0002] The flat plate valve is a core component of downhole fracturing equipment. Its structure mainly consists of a valve core and a valve body, and its function is to control the opening and closing of hydraulic fracturing operations. Monitoring the on / off status of the flat plate valve at the wellhead is crucial to ensuring the normal operation of downhole fracturing work.

[0003] Currently, there are two operational scenarios in oilfields: the first is purely mechanical control, where the slab valve is manually operated. The problem with this is that the slab valve is installed at the wellhead, the valve's open / closed status is unclear, and under high pressure, it's impossible to approach the valve to determine its opening. Therefore, during dual-well operations (bridge plug perforation + fracturing), errors in valve status judgment are prone to occur, leading to accidents such as perforation gun slippage. The second is automatic control, where a control signal is sent to the hydraulic system from the field control center to control the slab valve's opening and closing via a control panel. Although there is automatic control, manual confirmation is still required, making it impossible to accurately determine whether the slab valve is fully closed or fully open. Furthermore, only a few sets of this automatic control equipment exist, with most fracturing sites still relying on purely mechanical control. Although the operation methods differ, both methods require manual confirmation of the slab valve's position, which is time-consuming, labor-intensive, has long feedback times, and poses significant safety hazards. To reduce the safety hazards and production problems caused by unclear slab valve status, a wireless transmission wellhead slab valve position status detection device and method are proposed to solve the problem of inaccurate slab valve position confirmation. Summary of the Invention

[0004] This invention provides a wireless transmission wellhead flat valve position status detection device and detection method, which overcomes the shortcomings of the prior art and can effectively solve the problem of time-consuming and labor-intensive manual confirmation of the position status of existing flat valves.

[0005] One of the technical solutions of the present invention is achieved through the following measures: a wireless transmission wellhead flat valve position status detection device, including a detection structure, the detection structure including a shell, the shell being detachably mounted on the flat valve body through a mounting structure, a wireless signal transmitter being installed on the upper right side of the shell, a long slit penetrating through the inside and outside of the flat valve body being provided on the upper side of the flat valve body, a valve core being provided inside the flat valve body, the shell being able to cover the long slit, a valve core left limit position sensor and a valve core right limit position sensor being provided on the lower side of the shell corresponding to the long slit position, the L-shaped cuboid mounting frame being installed on the lower side of the shell, a valve core axial displacement sensor being installed at the lower end of the mounting frame, and a monitoring hole penetrating through the inside and outside being provided on the right side of the flat valve body corresponding to the position of the valve core axial displacement sensor.

[0006] The following are further optimizations and / or improvements to the above-mentioned technical solution: Preferably, the mounting structure includes a first fixing hoop, a second fixing hoop, a third fixing hoop, and a fourth fixing hoop that are bolted to the outside of the housing. The first fixing hoop, the second fixing hoop, the third fixing hoop, and the fourth fixing hoop are arranged in an Ω shape with the opening facing upward and are spaced apart from right to left.

[0007] Preferably, fixing steel bars are installed at intervals on the inner side of the first fixing section hoop, and the fixing steel bars are located on the right side of the flat valve body.

[0008] Preferably, the first, second, third, and fourth fixed sections are all provided with fixing ribs on the outer shell at the connection points with the outer shell.

[0009] Preferably, a fixed cylinder is installed on the lower side of the outer shell at the inner right end of the long slit of the flat valve body.

[0010] Preferably, the detection structure further includes a valve core left / position sensor and a valve core right / position sensor. The valve core left / position sensor and the valve core right / position sensor are respectively installed at intervals on the left and right sides of the lower side of the housing. The valve core left / position sensor is installed at a position of / of the valve core from the left limit position, and the valve core right / position sensor is installed at a position of / of the valve core from the right limit position.

[0011] The second technical solution of the present invention is achieved through the following measures: a monitoring method, performed according to the following method, When the flat valve is controlled by the hydraulic system, the valve core axial displacement sensor detects the displacement state of the valve core, the valve core left limit position sensor reads the left limit position information, the valve core right limit position sensor reads the right limit position information, and the valve core left 1 / 4 position sensor and valve core right 1 / 4 position sensor assist in the detection. The information acquisition module collects data from the valve core axial displacement sensor, the valve core left limit position sensor, the valve core left 1 / 4 position sensor, the valve core right 1 / 4 position sensor, and the valve core right limit position sensor. After collection, the microcontroller compares the collected data with the threshold data in the displacement threshold setting function of the information acquisition module to determine whether the valve core movement is normal. If an abnormal position is detected, the control processing module automatically marks the data set. The microcontroller saves the received data to the data storage module, which then transmits the data to the wireless transmission module via the microcontroller. Finally, the wireless transmission module transmits the collected displacement data to the control center via the wireless transmission protocol.

[0012] The present invention has a reasonable and compact structure and is easy to use. The outer shell is installed on the valve body of the flat plate valve through the installation structure. The valve core position is detected by the valve core left limit position sensor, the valve core right limit position sensor and the valve core axial displacement sensor, and the valve core is transmitted to the microcontroller through the wireless signal transmitter to determine the opening and closing status of the flat plate valve. Attached Figure Description

[0013] Appendix Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention in use.

[0014] Appendix Figure 2 For the appendix Figure 1 A three-dimensional structural diagram of the detection structure.

[0015] Appendix Figure 3 For the appendix Figure 2 A three-dimensional structural diagram of the inner and outer shell viewed from below.

[0016] Appendix Figure 4 For the appendix Figure 1 Enlarged three-dimensional structural diagram of the inner shell and the fixed hoop.

[0017] Appendix Figure 5 This is a flowchart of the signal acquisition process in Example 7.

[0018] The codes in the attached diagram are as follows: 1. Flat plate valve body; 101. Valve core; 2. Detection structure; 201. First fixed clamp; 202. Second fixed clamp; 203. Third fixed clamp; 204. Fourth fixed clamp; 205. Valve core left limit position sensor; 206. Valve core left 1 / 4 position sensor; 207. Valve core right 1 / 4 position sensor; 208. Valve core right limit position sensor; 209. Fixed cylinder; 210. Valve core axial displacement sensor; 211. Housing; 212. Wireless signal transmitter. Detailed Implementation

[0019] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0020] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0021] The present invention will be further described below with reference to embodiments and accompanying drawings: Example 1: As shown in the attached document Figure 1-4As shown, the wireless transmission wellhead flat valve position status detection device includes a detection structure 2, which includes a housing 211. The housing 211 is detachably mounted on the flat valve body 1 via a mounting structure. A wireless signal transmitter 212 is mounted on the upper right side of the housing 211. The upper side of the flat valve body 1 has a through-slit. The valve core 101 is located inside the flat valve body 1. The housing 211 can cover the through-slit. The lower side of the housing 211 corresponding to the through-slit position has a valve core left limit position sensor 205 and a valve core right limit position sensor 208 for monitoring the position of the valve core 101. An L-shaped cuboid mounting frame is mounted on the lower right side of the housing 211. A valve core axial displacement sensor 210 is mounted at the lower end of the mounting frame. The right side of the flat valve body 1 corresponding to the position of the valve core axial displacement sensor 210 has a through-slit monitoring hole.

[0022] The housing is mounted on the flat valve body 1 by the mounting structure, which facilitates the detection structure 2 to detect the status of the flat valve. The rectangular mounting frame has a square cross-section and a circular monitoring hole that can accommodate the valve core axial displacement sensor 210 for detection. The square structure can prevent the mounting frame from moving to the left relative to the flat valve body 1, thus limiting the movement of the housing 211 to the left.

[0023] The above-mentioned wireless transmission wellhead flat valve position status detection device can be further optimized and / or improved according to actual needs: Example 2: As shown in the attached document Figure 1 , 2 As shown in Figure 4, the installation structure includes a first fixing clamp 201, a second fixing clamp 202, a third fixing clamp 203, and a fourth fixing clamp 204, which are bolted to the outside of the outer casing 211. The first fixing clamp 201, the second fixing clamp 202, the third fixing clamp 203, and the fourth fixing clamp 204 are arranged in an Ω shape with the opening facing upwards and are spaced apart from right to left. By setting four fixing clamps, the outer casing 211 is tightly fitted to the flat valve body 1, and long gaps are sealed to prevent leakage.

[0024] Example 3: As shown in the attached document Figure 1-2 As shown, fixing steel bars are installed at intervals on the inner side of the first fixing clamp 201, and the fixing steel bars are located on the right side of the flat valve body 1. The fixing steel bars prevent the device from moving to the left.

[0025] Example 4: As shown in the appendix Figure 1 , 2 As shown in Figure 4, fixing ribs are provided on the outer shell 211 at the connection points of the first fixing hoop 201, the second fixing hoop 202, the third fixing hoop 203, and the fourth fixing hoop 204 with the outer shell 211. The fixing ribs prevent deformation at the bolt and nut connection points.

[0026] Example 5: As shown in the attached document Figure 3As shown, a fixed cylinder 209 is installed on the lower side of the outer casing 211, corresponding to the inner right end of the long slit of the flat valve body 1. This prevents the outer casing 211 from moving to the right and rotating circumferentially.

[0027] Example 6: As shown in the appendix Figure 3 As shown, the detection structure 2 also includes a valve core left 1 / 4 position sensor 206 and a valve core right 1 / 4 position sensor 207. The valve core left 1 / 4 position sensor 206 and the valve core right 1 / 4 position sensor 207 are respectively installed at intervals on the lower side of the housing 211. The valve core left 1 / 4 position sensor 206 is installed at 1 / 4 of the distance between the valve core 101 and the left limit position, and the valve core right 1 / 4 position sensor 207 is installed at 1 / 4 of the distance between the valve core and the right limit position.

[0028] Example 7: As attached Figure 1-4 As shown, the monitoring method shall be carried out in accordance with the following procedure. When the flat valve is controlled by the hydraulic system, the valve core axial displacement sensor 210 detects the displacement state of the valve core 101, the valve core left limit position sensor 205 reads the left limit position information, the valve core right limit position sensor 208 reads the right limit position information, and the valve core left 1 / 4 position sensor 206 and valve core right 1 / 4 position sensor 207 assist in the detection. The information acquisition module collects data from the valve core axial displacement sensor 210, the valve core left limit position sensor 205, the valve core left 1 / 4 position sensor 206, the valve core right 1 / 4 position sensor 207, and the valve core right limit position sensor 208. After acquisition, the microcontroller compares the acquired data with the threshold data in the displacement threshold setting function of the information acquisition module to determine whether the valve core movement is normal. If an abnormal position is detected, the control processing module automatically marks the data set. The microcontroller saves the received data to the data storage module, which then transmits the data to the wireless transmission module via the microcontroller. Finally, the wireless transmission module transmits the collected displacement data to the control center via the wireless transmission protocol.

[0029] The above technical features constitute various embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A wireless transmission wellhead flat valve position status detection device, characterized in that... The detection structure includes a housing, which is detachably mounted on the flat valve body via a mounting structure. A wireless signal transmitter is mounted on the upper right side of the housing. The upper side of the flat valve body has a long slit that runs through both the inside and outside. The valve core is located inside the flat valve body. The housing can cover the long slit. A valve core left limit position sensor and a valve core right limit position sensor are located on the lower side of the housing corresponding to the long slit position. An L-shaped cuboid mounting frame is mounted on the lower right side of the housing. A valve core axial displacement sensor is mounted on the lower end of the mounting frame. A monitoring hole that runs through both the inside and outside is located on the right side of the flat valve body corresponding to the position of the valve core axial displacement sensor.

2. The wellhead flat valve position status detection device with wireless transmission according to claim 1, characterized in that... The mounting structure includes a first fixing hoop, a second fixing hoop, a third fixing hoop, and a fourth fixing hoop that are bolted to the outside of the housing. The first fixing hoop, the second fixing hoop, the third fixing hoop, and the fourth fixing hoop are arranged in an Ω shape with the opening facing upwards and are spaced apart from right to left.

3. The wellhead flat valve position status detection device with wireless transmission according to claim 2, characterized in that... The first fixed section hoop has fixed steel bars installed at intervals on its inner side, and the fixed steel bars are located on the right side of the flat valve body.

4. The wellhead flat valve position status detection device with wireless transmission according to claim 2 or 3, characterized in that... Fixing ribs are provided on the outer shell at the connection points between the first, second, third, and fourth fixing hoops and the outer shell.

5. The wellhead flat valve position status detection device with wireless transmission according to claim 1, 2, or 3, characterized in that... A fixed cylinder is installed on the lower side of the outer shell at the inner right end of the long slit of the flat valve body.

6. The wellhead flat valve position status detection device with wireless transmission according to claim 4, characterized in that... A fixed cylinder is installed on the lower side of the outer shell at the inner right end of the long slit of the flat valve body.

7. The wellhead flat valve position status detection device with wireless transmission according to claim 1, 2, 3, or 6, characterized in that... The detection structure also includes a valve core left 1 / 4 position sensor and a valve core right 1 / 4 position sensor. The valve core left 1 / 4 position sensor and the valve core right 1 / 4 position sensor are respectively installed at intervals on the left and right sides of the lower side of the housing. The valve core left 1 / 4 position sensor is installed at 1 / 4 of the distance from the left limit position of the valve core, and the valve core right 1 / 4 position sensor is installed at 1 / 4 of the distance from the right limit position of the valve core.

8. The wellhead flat valve position status detection device with wireless transmission according to claim 4, characterized in that... The detection structure also includes a valve core left 1 / 4 position sensor and a valve core right 1 / 4 position sensor. The valve core left 1 / 4 position sensor and the valve core right 1 / 4 position sensor are respectively installed at intervals on the left and right sides of the lower side of the housing. The valve core left 1 / 4 position sensor is installed at 1 / 4 of the distance from the left limit position of the valve core, and the valve core right 1 / 4 position sensor is installed at 1 / 4 of the distance from the right limit position of the valve core.

9. The wellhead flat valve position status detection device with wireless transmission according to claim 5, characterized in that... The detection structure also includes a valve core left 1 / 4 position sensor and a valve core right 1 / 4 position sensor. The valve core left 1 / 4 position sensor and the valve core right 1 / 4 position sensor are respectively installed at intervals on the left and right sides of the lower side of the housing. The valve core left 1 / 4 position sensor is installed at 1 / 4 of the distance from the left limit position of the valve core, and the valve core right 1 / 4 position sensor is installed at 1 / 4 of the distance from the right limit position of the valve core.

10. A monitoring method for a wellhead flat valve position status detection device employing wireless transmission as described in any one of claims 7 to 9, characterized in that... Perform the following steps. When the flat valve is controlled by the hydraulic system, the valve core axial displacement sensor detects the displacement state of the valve core, the valve core left limit position sensor reads the left limit position information, the valve core right limit position sensor reads the right limit position information, and the valve core left 1 / 4 position sensor 206 and the valve core right 1 / 4 position sensor assist in the detection. The information acquisition module collects data from the valve core axial displacement sensor, the valve core left limit position sensor, the valve core left 1 / 4 position sensor, the valve core right 1 / 4 position sensor, and the valve core right limit position sensor. After collection, the microcontroller compares the collected data with the threshold data in the displacement threshold setting function of the information acquisition module to determine whether the valve core movement is normal. If an abnormal position is detected, the control processing module automatically marks the data set. The microcontroller saves the received data to the data storage module, which then transmits the data to the wireless transmission module via the microcontroller. Finally, the wireless transmission module transmits the collected displacement data to the control center via the wireless transmission protocol.

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