Valve and method of monitoring a valve

Abstract

The application relates to the field of valve detection, and discloses a valve and a valve monitoring method. The valve comprises a valve body, a first wireless radio frequency identification module, a switch part and a second wireless radio frequency identification module, the valve body comprises a first mounting position, the first wireless radio frequency identification module is arranged at the first mounting position, the switch part comprises a second mounting position, the switch part is rotatably assembled on the valve body, when the switch part rotates relative to the valve body to correspond to the first mounting position and the second mounting position, the first wireless radio frequency identification module and the second wireless radio frequency identification module are in a communication connection state. Compared with the prior art, according to signals obtained from the communication connection state, the position state information between the switch part of the valve and the valve body is intelligently judged, and then the switch state of the valve is known, the convenience of use is improved, and the convenience of construction is improved due to the adoption of the wireless radio frequency identification function.

Description

Technical Field

[0001] This application relates to the field of valve testing technology, and in particular to a valve and a valve monitoring method. Background Technology

[0002] Currently, the on / off status of most well site valves is determined by operators or inspectors through physical observation during inspections. If the valve is determined to be open, the status indicator above it is adjusted to open; otherwise, it is adjusted to closed. This method of relying on manual physical observation is prone to errors and increases labor costs. Existing technologies utilize proximity switches for valve status monitoring. However, proximity switches require sufficient installation space around the valve, and they require a power source to operate. Using batteries raises concerns about battery life, while wired power requires wiring around the valve, increasing on-site installation complexity. Summary of the Invention

[0003] To address the technical challenges of detecting valve on / off status and the difficulties in construction, the main objective of this application is to provide a valve and a valve monitoring method that can quickly detect valve on / off status and is easy to construct.

[0004] To achieve the above-mentioned objectives, this application adopts the following technical solution:

[0005] According to one aspect of this application, a valve is provided, comprising:

[0006] Valve body, including the first mounting position;

[0007] A first radio frequency identification module is disposed at the first mounting position;

[0008] A switching part, including a second mounting position, is rotatably mounted to the valve body;

[0009] When the switch part is rotated relative to the valve body to correspond to the first mounting position and the second mounting position, the first wireless radio frequency identification module and the second wireless radio frequency identification module are in a communication connection state.

[0010] According to one embodiment of this application, the first radio frequency identification module is a radio frequency tag, and the second radio frequency identification module includes the radio frequency reader and an antenna, wherein the radio frequency reader is communicatively connected to the radio frequency tag through the antenna.

[0011] According to one embodiment of this application, the switch portion includes a shielded area and an unshielded area, the shielded area and the unshielded area are spaced apart along the rotation direction of the switch portion, and the second mounting position is disposed in the unshielded area;

[0012] Wherein: when the unshielded area is opposite to the first mounting position, the first RFID module and the second RFID module are in a communication connection state; when the shielded area is opposite to the first mounting position, the first RFID module and the second RFID module are in a non-communication connection state.

[0013] According to one embodiment of this application, the first mounting position is provided with a groove, the first radio frequency identification module is disposed in the groove, the switch part is provided with a through hole, the through hole forms the unshielded area, the second radio frequency identification module is disposed in the through hole, the shielded area is made of metal material, and the second radio frequency identification module is in a communication connection state with the first radio frequency identification module through the through hole.

[0014] According to one embodiment of this application, it includes a plurality of first mounting positions and a plurality of first radio frequency identification modules, the plurality of first mounting positions being arranged at circumferential intervals along the valve body, and the plurality of first mounting positions corresponding one-to-one with the plurality of first radio frequency identification modules.

[0015] According to one embodiment of this application, the switch is a valve stem or a control panel.

[0016] According to one embodiment of this application, it further includes a control module and an alarm module, wherein the control module is electrically connected to the alarm module and the second radio frequency identification module.

[0017] According to another aspect of this application, a valve monitoring method is provided, applied to the valve, further comprising the steps of:

[0018] When the switch unit rotates relative to the valve body to the first mounting position and the second mounting position, the first radio frequency identification module and the second radio frequency identification module are in a communication connection state to obtain the current rotation data of the switch unit.

[0019] If the rotation data of the current switch unit is consistent with the preset rotation state of the valve, then the fracturing operation is started.

[0020] According to one embodiment of this application, when the switch portion rotates relative to the valve body to a position where the first mounting position and the second mounting position are opposite each other, the first radio frequency identification module and the second radio frequency identification module are in a communication connection state, and the process before obtaining the current rotation data of the switch portion includes:

[0021] A plurality of first mounting positions are provided around the valve body, and a plurality of first radio frequency identification modules are provided corresponding to the plurality of first mounting positions; each of the first radio frequency identification modules and the second radio frequency identification module has rotation data of the switch part;

[0022] When the switch unit rotates relative to the valve body to a position where the first mounting position and the second mounting position are opposite each other, the first radio frequency identification module and the second radio frequency identification module corresponding to the current first mounting position are in a communication connection state, and the rotation data of the switch unit is generated.

[0023] According to one embodiment of this application, before the switching portion is rotated relative to the valve body to the point where the first mounting position is opposite to the second mounting position, the following is included:

[0024] The time period during which the valve body rotates to the position where the first mounting position and the second mounting position are opposite is obtained. If the time period exceeds a preset time threshold, the rotation state of the valve is readjusted.

[0025] As can be seen from the above technical solution, the advantages and positive effects of the valve and valve monitoring method of this application are as follows:

[0026] A first mounting position is set on the valve body, and a first radio frequency identification (RFID) module is installed at the first mounting position. A second mounting position is set on the valve's switch section. After the switch section is rotated to the position where the first and second mounting positions are opposite each other, a communication connection is established between the first and second RFID modules. Based on the signal received from this communication connection, the positional status information between the valve switch section and the valve body is intelligently determined, thereby determining the valve's open / closed status and improving ease of use. The use of RFID functionality also enhances the convenience of construction. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an overall structure of a valve provided in an embodiment of this application;

[0030] Figure 2This is a schematic diagram of a valve in a split state, as provided in an embodiment of this application.

[0031] Figure 3 A top view of a valve provided in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of another overall structure of a valve provided in an embodiment of this application;

[0033] Figure 5 This application provides a schematic diagram of the structure of a switching part in a valve.

[0034] Figure 6 This is a schematic diagram of the structure of a valve body in a valve provided in an embodiment of this application;

[0035] Figure 7 A schematic diagram illustrating the principle of wireless communication for valves provided in this application embodiment;

[0036] Figure 8 A schematic diagram of a process structure for a valve body monitoring method provided in this application embodiment;

[0037] Figure 9 This application provides another schematic diagram of the process structure for a valve body monitoring method.

[0038] Figure 10 This application provides another schematic diagram of the process structure for a valve body monitoring method.

[0039] Figure 11 This application provides another schematic diagram of the process structure for a valve body monitoring method.

[0040] Figure 12 This is another schematic diagram of the process structure of a valve body monitoring method provided in an embodiment of this application.

[0041] 10. Valve body; 11. First mounting position;

[0042] 20. First radio frequency identification module;

[0043] 30. Switch section; 31. Second mounting position; 32. Shielded area; 33. Unshielded area;

[0044] 40. Second radio frequency identification module. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Currently, the on / off status of most well site plug valves is determined by operators or inspectors through physical observation during inspections. If it is determined to be open, the status indicator above the plug valve is adjusted to open; otherwise, it is adjusted to closed. This method of relying on manual physical observation is prone to errors and increases labor costs. Some manufacturers use proximity switches for plug valve status monitoring, but using proximity switches requires sufficient installation space for the plug valve, and the proximity switches need a power source to operate. Using batteries raises concerns about battery life, while wired power requires wiring around the plug valve, increasing the difficulty of on-site installation.

[0047] For example, a plug valve is a rotary valve with a shut-off element or plunger shape. It is a type of valve that allows for rapid opening or closing of the passage by rotating 90 degrees, connecting or separating the passage on the plug with the passage on the valve body. In oil and gas field operations, plug valves are used to control the flow of fluid in high-pressure manifolds. During fracturing, the plug valve's on / off state is frequently adjusted according to the operational procedures. If the plug valve's on / off state is abnormal or it is not fully opened, the scouring effect of the fluid flow can easily damage the valve core or other components, leading to plug valve failure and thus increasing the risk of fracturing operation accidents.

[0048] According to one aspect of this application, a valve is provided, comprising:

[0049] Valve body 10, including first mounting position 11;

[0050] The first radio frequency identification module 20 is disposed at the first mounting position 11;

[0051] The switch part 30 includes a second mounting position 31 and is rotatably mounted on the valve body 10;

[0052] When the switch part 30 is rotated relative to the valve body 10 to the first mounting position 11 and the second mounting position 31, the first radio frequency identification module 20 and the second radio frequency identification module 40 are in a communication connection state.

[0053] As an example, refer to Figures 1-6As shown, in actual use, the switch part 30 rotates relative to the valve body 10 to adjust the valve's opening and closing state, or the size of the orifice of the flow channel inside the valve body 10. The second mounting position 31 rotates relative to the first mounting position 11. When the first mounting position 11 and the second mounting position 31 rotate to the reference position... Figure 3 As shown, when the first mounting position 11 and the second mounting position 31 overlap in the top view under orthographic projection, the first RFID module 20 and the second RFID module 40 are in a communication connection state. When the first mounting position 11 and the second mounting position 31 do not have an overlapping area in the top view under orthographic projection, the first RFID module 20 and the second RFID module 40 are in a non-communication connection state.

[0054] In this way, only when the switch part 30 drives the first mounting part to rotate to the preset angle will the first mounting position 11 and the second mounting position 31 have an overlapping area in the top view under orthographic projection. The user can determine whether the switch part 30 has rotated to the correct position based on whether the first radio frequency identification module 20 and the second radio frequency identification module 40 are in a communication connection state. This makes it easier for the user to judge the valve's opening and closing status, reduces the influence of human factors, and improves the accuracy of valve opening and closing status judgment.

[0055] Furthermore, since it uses line radio frequency identification technology, there is no need to set up complex wiring on the valve, which reduces the construction difficulty for workers and improves assembly efficiency.

[0056] According to one embodiment of this application, the first radio frequency identification module 20 is a radio frequency tag, and the second radio frequency identification module 40 includes a radio frequency reader and an antenna, wherein the radio frequency reader is communicatively connected to the radio frequency tag through the antenna.

[0057] Furthermore, as an example, RFID (Radio Frequency Identification) is a wireless communication technology that can identify specific targets and read and modify target data without contact via radio signals, without requiring mechanical or optical contact. It features strong anti-interference capabilities, fast data reading, and high reading power. RFID tags can store any information specified by the user and have a unique electronic code. The entire system works as follows: Figure 7 As shown, it includes: an RFID tag (equivalent to the first radio frequency identification module 20), an antenna, an RFID reader (equivalent to the second radio frequency identification module 40), and a processing unit.

[0058] The processing unit communicates with the RFID reader and controls the RFID reader to send RFID radio frequency signals through the antenna. After receiving the RFID radio frequency signals, the RFID tag will send the information in the RFID tag to the RFID reader through RFID radio frequency. The RFID reader then sends the tag information to the processing unit for analysis and processing.

[0059] According to one embodiment of this application, the switch part 30 includes a shielded area 32 and an unshielded area 33, the shielded area 32 and the unshielded area 33 are spaced apart along the rotation direction of the switch part 30, and the second mounting position 31 is disposed in the unshielded area 33.

[0060] Specifically: when the unshielded area 33 is opposite to the first mounting position 11, the first RFID module 20 and the second RFID module 40 are in a communication connection state; when the shielded area 32 is opposite to the first mounting position 11, the first RFID module 20 and the second RFID module 40 are in a non-communication connection state.

[0061] As an example, see reference Figure 3 As shown, the shielding area 32 can be made of metal, and the non-shielding area 33 can be made of an opening or notch, or a non-metallic material, since metal objects have a strong shielding effect on RFID radio frequency signals.

[0062] As an example, when the shielding area 32 is made of metal, the switch 30 rotates relative to the valve body 10. When the RFID tag is completely blocked or sealed by the metal object, the RFID radio frequency signal emitted by the RFID tag reader will not be able to pass through the metal object to be sent to the RFID tag. The RFID tag will not receive the RFID radio frequency signal sent by the RFID reader, and therefore cannot send the tag information to the RFID reader. Thus, the RFID reader and the RFID tag cannot establish communication.

[0063] As an example, the valve can be configured as a plug valve, the switch 30 can be configured as the control panel of the plug valve, and also includes a control module and an alarm module, the control module being electrically connected to the alarm module and the second radio frequency identification module 40.

[0064] The control panel of the plug valve is made of metal. The RFID tag is embedded in the plug valve body below the control panel. The top of the embedded RFID tag is blocked by the metal control panel, and the other sides are surrounded by the metal around the groove of the plug valve body. The RFID radio frequency signal emitted by the RFID tag reader cannot pass through the metal control panel to communicate with the RFID tag embedded in the plug valve body, so the RFID tag reader cannot read the RFID tag information.

[0065] Conversely, if there is a notch or through hole on the control panel of the plug valve as an unshielded area 33, when the control panel rotates, the notch or through hole on the control panel coincides with the position of the RFID tag embedded in the plug valve body, that is, the first mounting position 11 and the second mounting position 31 overlap axially. Then the RFID reader will transmit the emitted RFID radio frequency signal to the RFID tag through the notch or through hole on the control panel. After the RFID tag receives the radio frequency signal from the RFID reader, the RFID tag will transmit the tag storage information to the RFID reader through the notch or through hole on the control panel via the RFID radio frequency signal.

[0066] If the RFID tags embedded in the control panel (equivalent to the switch part 30) and the valve body (equivalent to the valve body 10) completely overlap at the position corresponding to the fully open state of the valve, the processing unit (equivalent to the control module) can automatically obtain the fully open state of the valve after analyzing and processing the RFID tag information read by the RFID reader. According to the processing model of the processing unit, when the switch part 30 is not rotated to the set position, the alarm module is controlled to sound an alarm. Users can flexibly adjust according to the usage situation to further increase the flexibility and convenience of use.

[0067] According to one embodiment of this application, the first mounting position 11 is provided with a groove, the first radio frequency identification module 20 is disposed in the groove, the switch part 30 is provided with a through hole, the through hole forms an unshielded area 33, the second radio frequency identification module 40 is disposed in the through hole, the shielded area 32 is made of metal material, and the second radio frequency identification module 40 is in a communication connection state with the first radio frequency identification module 20 through the through hole.

[0068] The first wireless RFID module 20 is fixed by the first mounting position 11, and the groove improves the stability of the first wireless RFID module 20. Since the second mounting position 31 is a through hole, the through hole forms an unshielded area 33. Therefore, when the first mounting position 11 and the second mounting position 31 are axially overlapping and opposite, the second wireless RFID module 40 is in a communication connection state with the first wireless RFID module 20 through the through hole.

[0069] According to one embodiment of this application, it includes a plurality of first mounting positions 11 and a plurality of first radio frequency identification modules 20. The plurality of first mounting positions 11 are arranged at intervals along the circumference of the valve body 10, and the plurality of first mounting positions 11 correspond one-to-one with the plurality of first radio frequency identification modules 20.

[0070] As an example, depending on the application scenario, if the goal is to monitor the opening ratio of the plug valve, multiple RFID tags can be embedded at equal intervals on the valve body 10 according to the required opening ratio. For example, if the plug valve needs to detect the state at four opening ratios of 25%, 50%, 75%, and 100%, four first mounting positions 11 are set at equal angular intervals around the circumference of the valve body 10, and a first radio frequency identification module 20 is set on each first mounting position 11.

[0071] As described above, a suitable-sized through hole is made on the control panel of the plug valve as the second mounting position 31. The control panel is operated to adjust the plug valve to the fully closed state. A suitable-sized groove is made on the plug valve body corresponding to the position of the control panel through hole. The magnetic groove serves as the first mounting position 11, where an RFID tag is embedded and sealed with a sealant containing non-metallic materials or other non-metallic materials. The tag information stores the current position fully closed status indicator. The control panel is operated to adjust the plug valve to the 25% open state. As above, a suitable-sized groove is made on the plug valve body corresponding to the control panel through hole, and an RFID tag is embedded and sealed. The tag stores the current position 25% open status indicator. The control panel is then operated sequentially to adjust the plug valve to the 50%, 75%, and 100% open states. The above operations are performed to respectively complete the operation of making a suitable-sized groove on the plug valve body corresponding to the control panel through hole and embedding and sealing the RFID tag. The embedded RFID tag stores the open status indicators of the 50%, 75%, and 100% open positions, respectively.

[0072] The processing unit instructs the RFID reader to send RFID radio frequency information through the antenna to read the RFID tag information at the corresponding position of the stopcock valve. In this embodiment, the reading of the stopcock valve's open / closed state is divided into six states: fully closed, 25% open, 50% open, 75% open, 100% open, and abnormal, unable to read RFID tag information. The detection methods for the five open states of fully closed, 25% open, 50% open, 75% open, and 100% open are the same as those described in the detection steps of this embodiment above, and will not be repeated in detail here.

[0073] The processing unit acquires RFID tag information and automatically determines the opening / closing ratio of the stopcock valve by analyzing the on / off status flags of the RFID tag information. An abnormal state where RFID tag information cannot be read indicates an anomaly in detecting the stopcock valve's opening / closing ratio. In this state, the through-hole position of the stopcock valve control panel does not overlap with any of the RFID tags embedded in the stopcock valve body. All RFID tags embedded in the stopcock valve body are blocked by the non-through-hole positions of the control panel. The RFID radio frequency information sent by the RFID tag reader cannot pass through the control panel to the RFID tags, making it impossible to obtain the true opening / closing ratio of the stopcock valve. This abnormal state can be handled according to the actual application situation.

[0074] According to one embodiment of this application, the switch portion 30 is a valve stem or a control panel.

[0075] According to another aspect of this application, a valve monitoring method is provided, applied to a valve, and further includes the following steps:

[0076] When the switch unit 30 rotates relative to the valve body 10 to the first mounting position 11 and the second mounting position 31, the first radio frequency identification module 20 and the second radio frequency identification module 40 are in a communication connection state and obtain the current rotation data of the switch unit 30.

[0077] If the rotation data of the current switching unit 30 is consistent with the preset rotation state of the valve, the fracturing operation is started.

[0078] As an example, in one use case, refer to Figure 8 As shown:

[0079] When the plug valve is fully closed, before starting fracturing operations on site, the processing unit will automatically trigger a check on the opening and closing status of the plug valve. The processing unit will notify the RFID reader (equivalent to the second radio frequency identification module 40) to read the information of the RFID tag (equivalent to the first radio frequency identification module 20) embedded in the plug valve. The RFID reader will send RFID radio frequency information through the antenna. The radio frequency information transmitted by the RFID reader will be sent to the RFID tag through the through hole on the control panel. After receiving the radio frequency information from the RFID reader, the RFID tag will transmit the tag storage information to the RFID reader through the through hole on the control panel via the RFID radio frequency signal. The RFID reader will then send the read RFID tag information to the processing unit. The processing unit will obtain the RFID tag information and analyze and process it. By using the plug valve serial number and the closed position mark in the tag information, it can be determined that the plug valve is in a fully closed state.

[0080] When the plug valve is fully open, before starting fracturing operations on site, the processing unit (equivalent to the control module) will automatically trigger a check on the opening and closing status of the plug valve. The processing unit will notify the RFID reader to read the RFID tag information embedded in the plug valve. The RFID reader will send RFID radio frequency information through the antenna. The radio frequency information transmitted by the RFID reader will be sent to the RFID tag through the through hole (equivalent to the second mounting position 31) on the control panel (equivalent to the switch part 30). After receiving the radio frequency information from the RFID reader, the RFID tag will transmit the tag storage information to the RFID reader through the through hole on the control panel via the RFID radio frequency signal. The RFID reader will then send the read RFID tag information to the processing unit. The processing unit will obtain the RFID tag information and analyze and process it. By using the plug valve serial number and the open position mark in the tag information, it can be determined that the plug valve is in a fully open state.

[0081] When the plug valve is not fully closed, before initiating fracturing operations, the processing unit will automatically trigger a check on the plug valve's open / closed status. The processing unit will notify the RFID reader to read the RFID tag information embedded in the plug valve. The RFID reader will transmit RFID radio frequency information via its antenna. Because the plug valve is not fully closed, the through-hole of the control panel cannot overlap with the RFID tag embedded in the plug valve. Therefore, the RFID tag on the plug valve body is blocked by the non-through-hole position of the control panel, and the radio frequency information transmitted by the RFID reader cannot be sent to the RFID tag, thus preventing the acquisition of RFID tag information. If the processing unit determines that the RFID reader has not returned RFID tag information within a timeout period, it will notify the RFID reader again to retrieve the RFID tag information. If the processing unit still does not receive the RFID tag information returned by the RFID reader after three attempts (three attempts are used in this solution), it will determine that the plug valve is not fully closed.

[0082] The processing unit automatically determines whether the current state of the plug valve is consistent with the preset state. If the state is consistent, the fracturing operation is started. If the state is inconsistent, the operation is stopped and anomaly investigation is carried out. After the anomaly investigation is completed, the processing unit automatically triggers the check of the on-site plug valve opening and closing status again in the same manner to improve the detection of valve opening and closing status and improve the convenience of use.

[0083] According to one embodiment of this application, when the switch unit 30 rotates relative to the valve body 10 to a position where the first mounting position 11 is opposite to the second mounting position 31, the first radio frequency identification module 20 and the second radio frequency identification module 40 are in a communication connection state, and the process before obtaining the current rotation data of the switch unit 30 includes:

[0084] A plurality of first mounting positions 11 are provided around the valve body 10, and a plurality of first radio frequency identification modules 20 corresponding one-to-one with the plurality of first mounting positions 11; each first radio frequency identification module 20 and the second radio frequency identification module 40 have rotation data of a switch part 30.

[0085] When the switch unit 30 rotates relative to the valve body 10 to a first mounting position 11 opposite to the second mounting position 31, the first radio frequency identification module 20 and the second radio frequency identification module 40 corresponding to the current first mounting position 11 are in a communication connection state, and the rotation data of the current switch unit 30 is generated.

[0086] As an example, see reference Figure 9 As shown, the valve opening ratio can be determined by the different rotation data of the current switch section 30 obtained when the first mounting position 11 and the second mounting position 31 are opposite each other at different positions.

[0087] As an example, to monitor the opening ratio of a plug valve, multiple RFID tags can be embedded at equal intervals on the valve body 10 of the plug valve according to the required opening ratio. For example, a plug valve needs to detect four opening ratios: 25%, 50%, 75%, and 100%. As described in this embodiment, a suitable-sized through-hole is made on the plug valve control panel. The control panel is operated to adjust the plug valve to the fully closed state. A suitable-sized groove is made on the plug valve body corresponding to the position of the control panel through-hole, and an RFID tag is embedded. The groove is sealed using a sealant containing non-metallic materials or other non-metallic materials. The tag information stores the current fully closed state indicator. The control panel is operated to adjust the plug valve to the 25% open state. As above, a suitable-sized groove is made on the plug valve body corresponding to the control panel through-hole, and an RFID tag is embedded and sealed. The tag stores the current 25% open state indicator. The control panel is then operated sequentially to adjust the plug valve to the 50%, 75%, and 100% open states. The above operations are performed to respectively complete the operation of making a suitable-sized groove on the plug valve body corresponding to the control panel through-hole, embedding an RFID tag, and sealing it. The embedded RFID tag stores the open state indicators for the 50%, 75%, and 100% open positions. The processing unit instructs the RFID reader to send RFID radio frequency information via antenna to read the RFID tag information at the corresponding position of the stopcock valve. In this embodiment, the readout state of the stopcock valve is divided into six states: fully closed, 25% open, 50% open, 75% open, 100% open, and abnormal, unable to read RFID tag information. The detection methods for the five open states (fully closed, 25% open, 50% open, 75% open, and 100% open) are the same as those described in the detection steps of this embodiment above, and will not be repeated in detail here. After obtaining the RFID tag information, the processing unit can automatically determine the open / closed ratio of the stopcock valve by analyzing the open / closed status flag of the RFID tag information. The "Unable to Read RFID Tag Information" status indicates an abnormality in the detection of the plug valve's opening / closing ratio. In this state, the through-hole position of the plug valve control panel does not overlap with any of the RFID tags embedded in the plug valve body. All RFID tags embedded in the plug valve body are blocked by the non-through-hole positions of the control panel. The RFID radio frequency information sent by the RFID tag reader cannot pass through the control panel to the RFID tags, and the true opening ratio of the plug valve cannot be obtained. This abnormal status can be handled according to the actual application situation.

[0088] According to one embodiment of this application, before the switch portion 30 rotates relative to the valve body 10 to the first mounting position 11 and the second mounting position 31 are opposite each other, the following is included:

[0089] The time period when the valve body 10 of the switch unit 30 is rotated to the point where the first mounting position 11 and the second mounting position 31 are opposite each other is obtained. If the time period exceeds the preset time threshold, the rotation state of the valve is readjusted.

[0090] As an example, refer to Figure 10 and Figure 11 As shown in the figure, as an example, multiple plug valves are installed on the manifold skid at the fracturing site. The outlet of each plug valve is connected to the high-pressure main manifold. When any one of the plug valves is opened, fracturing medium will flow in the high-pressure main manifold. When the fracturing medium flows through the outlet connection of the unopened plug valve, sand will accumulate at the front end of the plug valve. As the sand accumulation becomes more severe, the plug valve will be unable to be opened again or will be difficult to open.

[0091] refer to Figure 12 As shown, to address the issue of sand blockage or rust that can easily occur when valves remain in the same position for an extended period, the processing unit automatically checks the status of the plug valves on-site using an RFID reader before each fracturing operation. If it determines that a plug valve has been closed for an extended period, the processing unit will automatically issue an alarm message, indicating that the plug valve has been closed for a long time and its opening and closing status needs to be switched to clear the sand buildup at the plug valve position, thus preventing the plug valve from becoming difficult to open again.

[0092] Furthermore, when the processing unit checks that the plug valve has undergone an on / off state switch, the processing unit automatically clears the alarm message.

[0093] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0094] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A valve, characterized in that The valve body (10) comprises a first mounting position (11); The first wireless radio frequency identification module (20) is arranged in the first mounting position (11); The switch part (30) comprises a second mounting position (31), and the switch part (30) is rotatably arranged in the valve body (10); When the switch part (30) is rotated to the first mounting position (11) and the second mounting position (31) corresponds, the first wireless radio frequency identification module (20) and the second wireless radio frequency identification module (40) are in a communication connection state; The switch part (30) comprises a shielding area (32) and a non-shielding area (33), the shielding area (32) and the non-shielding area (33) are arranged along the rotation direction of the switch part (30), and the second mounting position (31) is arranged in the non-shielding area (33); When the non-shielding area (33) is opposite to the first mounting position (11), the first wireless radio frequency identification module (20) and the second wireless radio frequency identification module (40) are in a communication connection state; when the shielding area (32) is opposite to the first mounting position (11), the first wireless radio frequency identification module (20) and the second wireless radio frequency identification module (40) are in a non-communication connection state; The first mounting position (11) is provided with a groove, the first wireless radio frequency identification module (20) is arranged in the groove, the switch part (30) is provided with a through hole, the through hole forms the non-shielding area (33), the second wireless radio frequency identification module (40) is arranged in the through hole, the shielding area (32) is arranged as a metal material, and the second wireless radio frequency identification module (40) is in a communication connection state with the first wireless radio frequency identification module (20) through the through hole; The switch part (30) is a control disc, the control disc is made of metal, and the through hole on the control disc serves as the non-shielding area (33). The first wireless radio frequency identification module (20) is a wireless radio frequency tag, the second wireless radio frequency identification module (40) comprises a wireless radio frequency reader and an antenna, and the wireless radio frequency reader is in a communication connection state with the wireless radio frequency tag through the antenna.

2. The valve of claim 1, wherein A plurality of first mounting positions (11) and a plurality of first wireless radio frequency identification modules (20) are arranged, the plurality of first mounting positions (11) are arranged along the circumference of the valve body (10), and the plurality of first mounting positions (11) and the plurality of first wireless radio frequency identification modules (20) correspond one by one.

3. The valve of claim 1, wherein A control module and an alarm module are further arranged, and the control module is electrically connected with the alarm module and the second wireless radio frequency identification module (40).

4. Valve according to any of claims 1-3, characterized in that The valve is applied to any one of claims 1-4, and further comprises the following steps:

5. A method of monitoring a valve, characterized by, ​ When the switch part (30) is rotated to the first installation position (11) opposite to the second installation position (31) relative to the valve body (10), the first wireless radio frequency identification module (20) and the second wireless radio frequency identification module (40) are in a communication connection state, and the rotation data of the current switch part (30) is obtained. If the rotation data of the current switch part (30) is consistent with the preset rotation state of the valve, the fracturing operation is started.

6. The valve monitoring method of claim 5, wherein Wherein, Before the switch part (30) is rotated to the first installation position (11) opposite to the second installation position (31) relative to the valve body (10), the first wireless radio frequency identification module (20) and the second wireless radio frequency identification module (40) are in a communication connection state, and the rotation data of the current switch part (30) is obtained. A plurality of first installation positions (11) are arranged circumferentially on the valve body (10), and a plurality of first wireless radio frequency identification modules (20) corresponding to the plurality of first installation positions (11) are arranged; each of the first wireless radio frequency identification modules (20) and the second wireless radio frequency identification module (40) has a rotation data of the switch part (30); When the switch part (30) is rotated to the first installation position (11) opposite to the second installation position (31) relative to the valve body (10), the first wireless radio frequency identification module (20) and the second wireless radio frequency identification module (40) are in a communication connection state, and the rotation data of the current switch part (30) is obtained.

7. The valve monitoring method according to claim 5 or 6, characterized in that, Wherein, Before the switch part (30) is rotated to the first installation position (11) opposite to the second installation position (31) relative to the valve body (10), it includes: Obtain the time period when the switch part (30) rotates to the first installation position (11) opposite to the second installation position (31) relative to the valve body (10), and when the time period exceeds the preset time threshold, the rotation state of the valve is adjusted again.

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