Reciprocating plunger pump connecting rod bearing temperature monitoring device and monitoring method

Abstract

The invention relates to a reciprocating plunger pump connecting rod bearing temperature monitoring device which comprises a reciprocating plunger pump, a wireless temperature sensor, a signal receiving antenna, a signal acquisition module, a signal analysis module and a data visualization man-machine interaction module. The wireless temperature sensor is fixedly mounted on a connecting rod bearing arranged in the reciprocating plunger pump; the signal receiving antenna is in electric signal coupling with the signal acquisition module; the signal acquisition module is in electric signal coupling with the signal analysis module; and the signal analysis module is in electric signal coupling with the data visualization man-machine interaction module. The invention further relates to a monitoring method using the reciprocating plunger pump connecting rod bearing temperature monitoring device. The problem that a wired temperature sensor cannot be arranged is solved; interference on measurement caused by splashing of lubricating oil in the crankcase is avoided; the problem of signal shielding between cylinders is solved; the temperature of the crankshaft in the pump shell is monitored, and the working state of the crankshaft connecting rod bearing is known in time.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas production monitoring, and in particular to a reciprocating plunger pump connecting rod bearing temperature monitoring device and a monitoring method. Background Art

[0002] The reciprocating plunger pump is the core mechanism in the production process of oil and gas fields. It is used to convert low-pressure fluid into high-pressure fluid. It is mostly used in multiple processes such as fracturing, cementing, and drilling. Therefore, it is particularly important to ensure the stable and reliable operation of the reciprocating plunger pump. During the operation of the reciprocating plunger pump, major accidents often occur due to abnormal friction and wear of the connecting rod bearing, loose connecting rod bolts, broken fastening screws, poor lubrication, etc., causing serious burns of the crankshaft bearing. In severe cases, the crankshaft will break, causing major safety accidents and seriously affecting the production of oil and gas fields. Since the connecting rod bearing is in motion during the operation of the plunger pump, traditional wired sensors cannot be used, and since the pump housing is a completely enclosed metal structure, there is also the problem of difficulty in transmitting wireless signals.

[0003] The defects of the prior art are:

[0004] 1. The reciprocating plunger pump of the prior art may produce abnormal friction and wear of the connecting rod bearing, loosening of the connecting rod bolts, breakage of the fastening screws, poor lubrication, etc. during operation, which may cause major accidents and cause serious burns of the crankshaft bearing. In severe cases, the crankshaft may break, causing major safety accidents and seriously affecting the production of oil and gas fields.

[0005] 2. Since the connecting rod bearing of the prior art is in motion during the operation of the plunger pump, it is impossible to use a traditional wired sensor. In addition, since the pump housing is a completely closed metal structure, there is a problem that wireless signals are difficult to transmit. Summary of the invention

[0006] In view of the above problems, the present invention provides a reciprocating piston pump connecting rod bearing temperature monitoring device and monitoring method, which aims to solve the problem that the prior art cannot arrange wired temperature sensors; avoid interference measurement caused by splashing lubricating oil in the crankcase; solve the problem of signal shielding between each cylinder; realize the monitoring of the crankshaft temperature in the pump casing, and timely understand the working status of the crankshaft connecting rod bearing.

[0007] To solve the above problems, the technical solution provided by the present invention is:

[0008] A reciprocating piston pump connecting rod bearing temperature monitoring device comprises a reciprocating piston pump, a wireless temperature sensor, a signal receiving antenna, a signal acquisition module, a signal analysis module, and a data visualization human-computer interaction module, wherein:

[0009] The wireless temperature sensor is fixedly mounted on a connecting rod bearing arranged inside the reciprocating piston pump; the wireless temperature sensor is used to convert the temperature quantity into an analog quantity and send it outward in a wireless signal mode; one end of the signal receiving antenna is installed inside the pump casing of the reciprocating piston pump, and the other end passes through the signal through hole on the pump casing of the reciprocating piston pump to be electrically coupled with the signal acquisition module; the signal receiving antenna is used to receive the signal emitted by the wireless temperature sensor and transmit it to the signal acquisition module; the signal acquisition module is electrically coupled with the signal analysis module; the signal acquisition module collects the received signal and converts the analog quantity into a digital quantity, and transmits it to the signal analysis module; the signal analysis module is used to analyze the data and make an early warning; the signal analysis module is electrically coupled with the data visualization human-computer interaction module; the data visualization human-computer interaction module is used to view the monitoring results and configure the monitoring parameters.

[0010] Preferably, the reciprocating piston pump comprises the connecting rod bearing, crankshaft, crankshaft bearing, crosshead, plunger and cylinder body; the crankshaft is connected to the connecting rod bearing by interference fit; the crankshaft is connected to the crankshaft bearing by interference fit; the plunger is connected to the crosshead by threads; and the cylinder body is slidably connected to the plunger.

[0011] Preferably, the reciprocating piston pump is a triplex pump.

[0012] Preferably, the wireless temperature sensor includes a first wireless temperature sensor, a second wireless temperature sensor, and a third wireless temperature sensor; the first wireless temperature sensor is installed on the first connecting rod bearing; the second wireless temperature sensor is installed on the second connecting rod bearing; and the third wireless temperature sensor is installed on the third connecting rod bearing.

[0013] Preferably, the first wireless temperature sensor, the second wireless temperature sensor, and the third wireless temperature sensor are respectively electrically signal coupled to the signal receiving antenna.

[0014] Preferably, the reciprocating piston pump is a five-cylinder pump; and five wireless temperature sensors are provided and are respectively installed on five corresponding connecting rod bearings.

[0015] Preferably, the reciprocating piston pump is a seven-cylinder pump; seven wireless temperature sensors are provided and are respectively installed on seven corresponding connecting rod bearings.

[0016] A monitoring method using the reciprocating piston pump connecting rod bearing temperature monitoring device comprises the following steps:

[0017] S100. Setting the fixed alarm threshold of the first wireless temperature sensor on the first connecting rod bearing as the first fixed alarm threshold; setting the temperature rise threshold of the first wireless temperature sensor as the first temperature rise threshold;

[0018] S200. Setting the fixed alarm threshold of the second wireless temperature sensor on the second connecting rod bearing as a second fixed alarm threshold; setting the temperature rise threshold of the second wireless temperature sensor as a second temperature rise threshold;

[0019] S300. Setting the fixed alarm threshold of the third wireless temperature sensor on the third connecting rod bearing as a third fixed alarm threshold; setting the temperature rise threshold of the second wireless temperature sensor as a third temperature rise threshold;

[0020] S400. The monitoring device starts to run; reads and records the first temperature pre-value of the first wireless temperature sensor, the second temperature pre-value of the second wireless temperature sensor, and the third temperature pre-value of the third wireless temperature sensor before the current time and at an interval of a manually preset time;

[0021] S500. Read and record the first temperature current value of the first wireless temperature sensor, the second temperature current value of the second wireless temperature sensor, and the third temperature current value of the third wireless temperature sensor at the current moment;

[0022] S600. Calculate the temperature rise value of each connecting rod bearing, expressed as follows:

[0023] ΔT 1 =T 1 -T 1 '

[0024] ΔT 2 =T 2 -T 2 '

[0025] ΔT 3 =T 3 -T 3 '

[0026] Where: ΔT 1 A first temperature rise value used to characterize the first connecting rod bearing; T 1 Used to represent the current value of the first temperature; T 1 ' is used to characterize the first temperature pre-value; ΔT 2 Used to characterize the second temperature rise value of the second connecting rod bearing; T 2 Used to represent the current value of the second temperature; T 2 'Used to characterize the second temperature pre-value; ΔT 3A third temperature rise value used to characterize the third connecting rod bearing; T 3 Used to characterize the current value of the third temperature; T 3 ' is used to characterize the third temperature pre-value;

[0027] S700. Determine whether the first temperature current value, the second temperature current value, the third temperature current value, the first temperature rise value, the second temperature rise value, and the third temperature rise value meet the manually preset alarm rules; if the judgment result is that the manually preset alarm rules are met, the monitoring device alarms.

[0028] Preferably, the alarm rule in step S700 specifically includes the following contents:

[0029] When the first temperature rise value is greater than the first temperature rise threshold or the first temperature current value is greater than the first fixed alarm threshold, triggering a temperature alarm of the first connecting rod bearing;

[0030] When the second temperature rise value is greater than the second temperature rise threshold or the second temperature current value is greater than the second fixed alarm threshold, triggering a temperature alarm of the second connecting rod bearing;

[0031] When the third temperature rise value is greater than the third temperature rise threshold or the third temperature current value is greater than the third fixed alarm threshold, the temperature alarm of the third connecting rod bearing is triggered.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] 1. Since the present invention utilizes a wireless temperature sensor, the problem that the crankshaft connecting rod bearing is a moving part and a wired temperature sensor cannot be arranged thereon is solved.

[0034] 2. Since the present invention utilizes a wireless temperature sensor, compared to infrared temperature measurement, this measurement method is not affected by splashing of lubricating oil in the crankcase.

[0035] 3. The present invention improves the pump structure, thereby solving the problem of signal shielding between each cylinder, realizing the monitoring of the crankshaft temperature in the pump housing, and timely understanding the working status of the crankshaft connecting rod bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of a monitoring device according to a specific embodiment of the present invention;

[0037] Wherein: 1. reciprocating piston pump, 2. crankshaft, 3. crankshaft bearing, 4. crosshead, 5. plunger, 6. cylinder block, 7. wireless temperature sensor, 7.1. first wireless temperature sensor, 7.2. second wireless temperature sensor, 7.3. third wireless temperature sensor, 8. connecting rod bearing, 8.1. first connecting rod bearing, 8.2. second connecting rod bearing, 8.3. third connecting rod bearing, 10. signal receiving antenna, 11. signal through hole on pump housing, 12. signal acquisition module, 13. signal analysis module, 14. data visualization human-computer exchange module. DETAILED DESCRIPTION

[0038] The present invention is further explained below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0039] like Figure 1 As shown, a reciprocating piston pump connecting rod bearing temperature monitoring device includes a reciprocating piston pump 1, a wireless temperature sensor 7, a signal receiving antenna 10, a signal acquisition module 12, a signal analysis module 13, and a data visualization human-computer interaction module 14, wherein:

[0040] The wireless temperature sensor 7 is fixedly mounted on the connecting rod bearing 8 arranged inside the reciprocating piston pump 1; the wireless temperature sensor 7 is used to convert the temperature quantity into an analog quantity and send it outward in a wireless signal mode; one end of the signal receiving antenna 10 is installed inside the pump housing of the reciprocating piston pump 1, and the other end passes through the signal through hole on the pump housing of the reciprocating piston pump 1 to be electrically coupled with the signal acquisition module 12; the signal receiving antenna 10 is used to receive the signal sent by the wireless temperature sensor 7 and transmit it to the signal acquisition module 12; the signal acquisition module 12 is electrically coupled with the signal analysis module 13; the signal acquisition module 12 collects the received signal and converts the analog quantity into a digital quantity, and transmits it to the signal analysis module 13; the signal analysis module 13 is used to analyze the data and make an early warning; the signal analysis module 13 is electrically coupled with the data visualization human-computer interaction module 14; the signal analysis module 13 sends the analysis result to the data visualization human-computer interaction module 14 for data display; the data visualization human-computer interaction module 14 is used to view the monitoring results and configure the monitoring parameters.

[0041] It should be noted that the reciprocating piston pump 1 includes a connecting rod bearing 8, a crankshaft 2, a crankshaft bearing 3, a crosshead 4, a plunger 5, and a cylinder body 6; the crankshaft 2 is connected to the connecting rod bearing 8 by an interference fit; the crankshaft 2 is connected to the crankshaft bearing 3 by an interference fit; the plunger 5 is connected to the crosshead 4 by threads; and the cylinder body 6 is slidably connected to the plunger 5.

[0042] It should be noted that the reciprocating piston pump 1 is a triplex pump.

[0043] It should be noted that the wireless temperature sensor 7 includes a first wireless temperature sensor 7.1, a second wireless temperature sensor 7.2, and a third wireless temperature sensor 7.3; the first wireless temperature sensor 7.1 is installed on the first connecting rod bearing 8.1; the second wireless temperature sensor 7.2 is installed on the second connecting rod bearing 8.2; and the third wireless temperature sensor 7.3 is installed on the third connecting rod bearing 8.3.

[0044] It should be further explained that the first wireless temperature sensor 7.1, the second wireless temperature sensor 7.2, and the third wireless temperature sensor 7.3 are electrically signal coupled to the signal receiving antenna 10 respectively.

[0045] It should be noted that the reciprocating piston pump 1 may be a five-cylinder pump; five wireless temperature sensors 7 are provided, which are respectively installed on five corresponding connecting rod bearings 8 .

[0046] It should be noted that the reciprocating piston pump 1 may be a seven-cylinder pump; seven wireless temperature sensors 7 are provided, which are respectively installed on seven corresponding connecting rod bearings 8 .

[0047] A monitoring method using a reciprocating piston pump connecting rod bearing temperature monitoring device comprises the following steps:

[0048] S100. Set the fixed alarm threshold of the first wireless temperature sensor 7.1 on the first connecting rod bearing 8.1 as the first fixed alarm threshold; set the temperature rise threshold of the first wireless temperature sensor 7.1 as the first temperature rise threshold.

[0049] S200. Set the fixed alarm threshold of the second wireless temperature sensor 7.2 on the second connecting rod bearing 8.2 as the second fixed alarm threshold; set the temperature rise threshold of the second wireless temperature sensor 7.2 as the second temperature rise threshold.

[0050] S300. Set the fixed alarm threshold of the third wireless temperature sensor 7.3 on the third connecting rod bearing 8.3 as the third fixed alarm threshold; set the temperature rise threshold of the second wireless temperature sensor 7.3 as the third temperature rise threshold.

[0051] S400. The monitoring device starts to run; reads and records the first temperature pre-value of the first wireless temperature sensor 7.1, the second temperature pre-value of the second wireless temperature sensor 7.2, and the third temperature pre-value of the third wireless temperature sensor 7.3 before the current time and at an interval of a manually preset time.

[0052] S500. Read and record the first current temperature value of the first wireless temperature sensor 7.1, the second current temperature value of the second wireless temperature sensor 7.2, and the third current temperature value of the third wireless temperature sensor 7.3 at the current moment.

[0053] S600. Calculate the temperature rise value of each connecting rod bearing 8, expressed as formula 1:

[0054]

[0055] Where: ΔT 1 It is used to characterize the first temperature rise value of the first connecting rod bearing 8.1; T 1 Used to represent the current value of the first temperature; T 1 ' is used to represent the first temperature pre-value; ΔT 2 Used to characterize the second temperature rise value of the second connecting rod bearing 8.2; T 2 Used to represent the current value of the second temperature; T 2 'Used to characterize the second temperature pre-value; ΔT 3 The third temperature rise value used to characterize the third connecting rod bearing 8.3; T 3 Used to represent the current value of the third temperature; T 3 'Used to characterize the third temperature pre-value.

[0056] S700. Determine whether the current value of the first temperature, the current value of the second temperature, the current value of the third temperature, the first temperature rise value, the second temperature rise value, and the third temperature rise value meet the manually preset alarm rules; if the judgment result is that the manually preset alarm rules are met, the monitoring device alarms.

[0057] It should be noted that the alarm rules in step S700 specifically include the following:

[0058] When the first temperature rise value is greater than the first temperature rise threshold or the first temperature current value is greater than the first fixed alarm threshold, the temperature alarm of the first connecting rod bearing 8.1 is triggered.

[0059] When the second temperature rise value is greater than the second temperature rise threshold or the second temperature current value is greater than the second fixed alarm threshold, the temperature alarm of the second connecting rod bearing 8.2 is triggered.

[0060] When the third temperature rise value is greater than the third temperature rise threshold or the third temperature current value is greater than the third fixed alarm threshold, the temperature alarm of the third connecting rod bearing 8.3 is triggered.

[0061] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0062] The disclosed embodiments are described above to enable any person skilled in the art to implement or use the present invention. Various modifications of these embodiments are obvious to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0063] The above description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

[0064] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reciprocating piston pump connecting rod bearing temperature monitoring device, characterized in that: The system comprises a reciprocating plunger pump (1), a wireless temperature sensor (7), a signal receiving antenna (10), a signal acquisition module (12), a signal analysis module (13), and a data visualization human-computer interaction module (14), wherein: The wireless temperature sensor (7) is fixedly mounted on a connecting rod bearing (8) disposed inside the reciprocating piston pump (1); the wireless temperature sensor (7) is used to convert a temperature quantity into an analog quantity and transmit it to the outside in a wireless signal mode; one end of the signal receiving antenna (10) is mounted inside the pump housing of the reciprocating piston pump (1), and the other end passes through a signal through hole on the pump housing of the reciprocating piston pump (1) to couple the electrical signal of the signal acquisition module (12); the signal receiving antenna (10) is used to receive the signal emitted by the wireless temperature sensor (7) and transmit it to The signal acquisition module (12); the signal acquisition module (12) is electrically coupled to the signal analysis module (13); the signal acquisition module (12) acquires the received signal and converts the analog quantity into a digital quantity, and transmits the result to the signal analysis module (13); the signal analysis module (13) is used to analyze the data and issue an early warning; the signal analysis module (13) is electrically coupled to the data visualization human-computer interaction module (14); the data visualization human-computer interaction module (14) is used to view the monitoring results and configure the monitoring parameters.

2. The reciprocating piston pump connecting rod bearing temperature monitoring device according to claim 1, characterized in that: The reciprocating piston pump (1) comprises the connecting rod bearing (8), the crankshaft (2), the crankshaft bearing (3), the crosshead (4), the plunger (5), and the cylinder body (6); the crankshaft (2) and the connecting rod bearing (8) are connected by interference fit; the crankshaft (2) and the crankshaft bearing (3) are connected by interference fit; the plunger (5) and the crosshead (4) are connected by threads; and the cylinder body (6) and the plunger (5) are slidably connected.

3. The reciprocating piston pump connecting rod bearing temperature monitoring device according to claim 2, characterized in that: The reciprocating plunger pump (1) is a triplex pump.

4. The reciprocating piston pump connecting rod bearing temperature monitoring device according to claim 3, characterized in that: The wireless temperature sensor (7) comprises a first wireless temperature sensor (7.1), a second wireless temperature sensor (7.2), and a third wireless temperature sensor (7.3); the first wireless temperature sensor (7.1) is mounted on a first connecting rod bearing (8.1); the second wireless temperature sensor (7.2) is mounted on a second connecting rod bearing (8.2); and the third wireless temperature sensor (7.3) is mounted on a third connecting rod bearing (8.3).

5. The reciprocating piston pump connecting rod bearing temperature monitoring device according to claim 4, characterized in that: The first wireless temperature sensor (7.1), the second wireless temperature sensor (7.2), and the third wireless temperature sensor (7.3) are respectively electrically signal coupled to the signal receiving antenna (10).

6. The reciprocating piston pump connecting rod bearing temperature monitoring device according to any one of claims 1 to 2, characterized in that: The reciprocating plunger pump (1) is a five-cylinder pump; five wireless temperature sensors (7) are provided and are respectively mounted on five corresponding connecting rod bearings (8).

7. The reciprocating piston pump connecting rod bearing temperature monitoring device according to any one of claims 1 to 2, characterized in that: The reciprocating plunger pump (1) is a seven-cylinder pump; seven wireless temperature sensors (7) are provided and are respectively mounted on seven corresponding connecting rod bearings (8).

8. A monitoring method using the reciprocating piston pump connecting rod bearing temperature monitoring device according to claim 5, characterized in that: The following steps are involved: S100. Setting the fixed alarm threshold of the first wireless temperature sensor (7.1) on the first connecting rod bearing (8.1) as a first fixed alarm threshold; setting the temperature rise threshold of the first wireless temperature sensor (7.1) as a first temperature rise threshold; S200. Setting the fixed alarm threshold of the second wireless temperature sensor (7.2) on the second connecting rod bearing (8.2) as a second fixed alarm threshold; setting the temperature rise threshold of the second wireless temperature sensor (7.2) as a second temperature rise threshold; S300. Setting the fixed alarm threshold of the third wireless temperature sensor (7.3) on the third connecting rod bearing (8.3) as a third fixed alarm threshold; setting the temperature rise threshold of the second wireless temperature sensor (7.3) as a third temperature rise threshold; S400. The monitoring device starts to run; reads and records the first temperature pre-value of the first wireless temperature sensor (7.1), the second temperature pre-value of the second wireless temperature sensor (7.2), and the third temperature pre-value of the third wireless temperature sensor (7.3) before the current moment and at an interval of a manually preset time; S500. Read and record the first current temperature value of the first wireless temperature sensor (7.1), the second current temperature value of the second wireless temperature sensor (7.2), and the third current temperature value of the third wireless temperature sensor (7.3) at the current moment; S600. Calculate the temperature rise value of each connecting rod bearing (8) as follows: ΔT1=T1-T1' ΔT2=T2-T2' ΔT3=T3-T3' Wherein: ΔT1 is used to characterize the first temperature rise value of the first connecting rod bearing (8.1); T1 is used to characterize the first temperature current value; T1′ is used to characterize the first temperature pre-value; ΔT2 is used to characterize the second temperature rise value of the second connecting rod bearing (8.2); T2 is used to characterize the second temperature current value; T2′ is used to characterize the second temperature pre-value; ΔT3 is used to characterize the third temperature rise value of the third connecting rod bearing (8.3); T3 is used to characterize the third temperature current value; T3′ is used to characterize the third temperature pre-value; S700. Determine whether the first temperature current value, the second temperature current value, the third temperature current value, the first temperature rise value, the second temperature rise value, and the third temperature rise value meet the manually preset alarm rules; if the judgment result is that the manually preset alarm rules are met, the monitoring device alarms.

9. The monitoring method according to claim 8, characterized in that: The alarm rules in step S700 specifically include the following contents: When the first temperature rise value is greater than the first temperature rise threshold or the first temperature current value is greater than the first fixed alarm threshold, triggering a temperature alarm of the first connecting rod bearing (8.1); When the second temperature rise value is greater than the second temperature rise threshold or the second temperature current value is greater than the second fixed alarm threshold, triggering a temperature alarm of the second connecting rod bearing (8.2); When the third temperature rise value is greater than the third temperature rise threshold or the third temperature current value is greater than the third fixed alarm threshold, a temperature alarm of the third connecting rod bearing (8.3) is triggered.

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