Reciprocating plunger pump connecting rod bearing temperature monitoring device

Abstract

The utility model 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. According to the utility model, the problem that wired temperature sensors 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 utility model relates to oil and gas exploitation monitoring technical field, concretely relates to reciprocating plunger pump connecting rod bearing temperature monitoring device. BACKGROUND

[0002] Reciprocating plunger pump is the core mechanism in the production process of oil and gas field, is used to convert low pressure fluid to high pressure fluid, is used in multiple processes such as fracturing, cementing, drilling etc., therefore, it is particularly important to ensure the stable and reliable operation of reciprocating plunger pump. During the operation of reciprocating plunger pump, major accidents are caused due to abnormal friction and wear of connecting rod bearing, loosening of connecting rod bolt, fracture of fastening screw, poor lubrication etc., causing serious burn of crankshaft bearing bush, and in serious cases, the crankshaft is broken, major safety accidents are caused, and the production of oil and gas field is seriously affected. Since the connecting rod bearing is in motion during the operation of plunger pump, traditional wired sensor cannot be used, and since the pump shell is a completely closed metal structure, the problem of difficult transmission of wireless signal exists.

[0003] Defects of prior art are as follows:

[0004] 1. Since the reciprocating plunger pump of prior art will generate abnormal friction and wear of connecting rod bearing, loosening of connecting rod bolt, fracture of fastening screw, poor lubrication etc. during operation, major accidents are caused, causing serious burn of crankshaft bearing bush, and in serious cases, the crankshaft is broken, major safety accidents are caused, and the production of oil and gas field is seriously affected.

[0005] 2. Since the connecting rod bearing of prior art is in motion during the operation of plunger pump, traditional wired sensor cannot be used, and since the pump shell is a completely closed metal structure, the problem of difficult transmission of wireless signal exists. SUMMARY

[0006] The reciprocating plunger pump connecting rod bearing temperature monitoring device and monitoring method provided by the utility model aim at solving the above problems, and the purpose is to solve the problem that the prior art cannot arrange wired temperature sensor, avoid the interference measurement caused by the splashing of lubricating oil in the crankcase, solve the signal shielding problem between each cylinder, realize the monitoring of the temperature of crankshaft in the pump shell, and timely understand the working state of crankshaft connecting rod bearing.

[0007] To solve the above problems, the technical scheme provided by the utility model is as follows:

[0008] A reciprocating plunger pump connecting rod bearing temperature monitoring device, comprising a reciprocating plunger 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 installed on the connecting rod bearing arranged in the interior of the reciprocating plunger pump; the wireless temperature sensor is used for converting temperature quantity into analog quantity and sending outward in wireless signal mode; one end of the signal receiving antenna is installed in the interior of the pump shell of the reciprocating plunger pump, the other end passes through the signal through hole on the pump shell of the reciprocating plunger pump and is electrically signal coupled with the signal collection module; the signal receiving antenna is used for receiving the signal emitted by the wireless temperature sensor and transmitting to the signal collection module; the signal collection module is electrically signal coupled with the signal analysis module; the signal collection module collects the received signal and converts the analog quantity into digital quantity and transmits to the signal analysis module; the signal analysis module is used for analyzing data and making early warning; the signal analysis module is electrically signal coupled with the data visualized human-computer interaction module; the data visualized human-computer interaction module is used for viewing monitoring results and configuring monitoring parameters.

[0010] Preferably, the reciprocating plunger pump comprises the connecting rod bearing, a crankshaft, a crankshaft bearing, a crosshead, a plunger and a cylinder; the crankshaft is connected with the connecting rod bearing in interference fit; the crankshaft is connected with the crankshaft bearing in interference fit; the plunger is connected with the crosshead through threads; the cylinder is connected with the plunger in sliding mode.

[0011] Preferably, the reciprocating plunger pump is a three-cylinder pump.

[0012] Preferably, the wireless temperature sensor comprises a first wireless temperature sensor, a second wireless temperature sensor and a third wireless temperature sensor; the first wireless temperature sensor is installed on a first connecting rod bearing; the second wireless temperature sensor is installed on a second connecting rod bearing; the third wireless temperature sensor is installed on a 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 with the signal receiving antenna.

[0014] Preferably, the reciprocating plunger pump is a five-cylinder pump; the wireless temperature sensor is provided with five, which are respectively installed on five corresponding connecting rod bearings.

[0015] Preferably, the reciprocating plunger pump is a seven-cylinder pump; the wireless temperature sensor is provided with seven, which are respectively installed on seven corresponding connecting rod bearings.

[0016] A monitoring method using the reciprocating plunger pump connecting rod bearing temperature monitoring device, comprising the following steps:

[0017] S100. Setting the fixed alarm threshold of the first wireless temperature sensor on the first connecting rod bearing as a first fixed alarm threshold; setting the temperature rise threshold of the first wireless temperature sensor as a 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 running; reading and recording 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 an artificially preset time length;

[0021] S500. Reading and recording 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 time;

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

[0023] ΔT1 = T1 - T1'

[0024] ΔT2 = T2 - T2'

[0025] ΔT3 = T3 - T3'

[0026] Wherein: ΔT1 is used to represent the first temperature rise value of the first connecting rod bearing; T1 is used to represent the first temperature current value; T1' is used to represent the first temperature pre-value; ΔT2 is used to represent the second temperature rise value of the second connecting rod bearing; T2 is used to represent the second temperature current value; T2' is used to represent the second temperature pre-value; ΔT3 is used to represent the third temperature rise value of the third connecting rod bearing; T3 is used to represent the third temperature current value; T3' is used to represent the third temperature pre-value;

[0027] S700. Determining 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 artificially preset alarm rule; if the determination result is that the artificially preset alarm rule is met, the monitoring device alarms.

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

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

[0032] The utility model has the following advantages compared with prior art:

[0033] 1. Since the utility model utilizes wireless temperature sensor, it solves the problem that the connecting rod bearing of the crankshaft cannot be arranged with wired temperature sensor because it is a moving part.

[0034] 2. Since the utility model utilizes wireless temperature sensor, compared with infrared temperature measurement, this measurement method is not disturbed by the splashing of lubricating oil in the crankcase.

[0035] 3. Since the utility model improves the pump structure, it solves the problem of signal shielding between each cylinder and realizes the monitoring of the temperature of the crankshaft in the pump shell and timely understanding of the working state of the connecting rod bearing of the crankshaft. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is the monitoring device structure schematic drawing of specific embodiment of the utility model;

[0037] Wherein: 1. reciprocating plunger pump, 2. crankshaft, 3. crankshaft bearing, 4. crosshead, 5. plunger, 6. cylinder body, 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 shell, 12. signal acquisition module, 13. signal analysis module, 14. data visualization man-machine exchange module. DETAILED DESCRIPTION

[0038] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[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] A wireless temperature sensor 7 is fixedly installed on the connecting rod bearing 8 inside the reciprocating plunger pump 1. The wireless temperature sensor 7 is used to convert the temperature value into an analog value and transmit it outward in wireless signal mode. One end of the signal receiving antenna 10 is installed inside the pump housing of the reciprocating plunger pump 1, and the other end passes through the signal through hole on the pump housing of the reciprocating plunger pump 1 and is electrically coupled to 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 collects the received signal, converts it from analog to digital, and transmits it to the signal analysis module 13. The signal analysis module 13 is used to analyze the data and issue early warnings. The signal analysis module 13 is electrically coupled to the data visualization human-computer interaction module 14. The signal analysis module 13 sends the analysis results 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 piston 5, and a cylinder block 6; the crankshaft 2 and the connecting rod bearing 8 are connected by an interference fit; the crankshaft 2 and the crankshaft bearing 3 are connected by an interference fit; the piston 5 and the crosshead 4 are connected by a thread; and the cylinder block 6 and the piston 5 are connected by a sliding fit.

[0042] It should be noted that the reciprocating piston pump 1 is a three-cylinder 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 mounted on the first connecting rod bearing 8.1; the second wireless temperature sensor 7.2 is mounted on the second connecting rod bearing 8.2; and the third wireless temperature sensor 7.3 is mounted on the third connecting rod bearing 8.3.

[0044] It needs to 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 respectively electrically coupled with the signal receiving antenna 10.

[0045] It needs to be explained that the reciprocating plunger pump 1 can be a five-cylinder pump; the wireless temperature sensor 7 is provided with five, which are respectively installed on the five corresponding connecting rod bearings 8.

[0046] It needs to be explained that the reciprocating plunger pump 1 can be a seven-cylinder pump; the wireless temperature sensor 7 is provided with seven, which are respectively installed on the seven corresponding connecting rod bearings 8.

[0047] A monitoring method using the reciprocating plunger pump connecting rod bearing temperature monitoring device, comprising the following steps:

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

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

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

[0051] S400. The monitoring device starts running; 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 the interval of the artificially preset time length.

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

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

[0054]

[0055] Wherein: ΔΤ1 is used to represent the first temperature rise value of the first connecting rod bearing 8.1; T1 is used to represent the first temperature current value; T1' is used to represent the first temperature previous value; ΔΤ2 is used to represent the second temperature rise value of the second connecting rod bearing 8.2; T2 is used to represent the second temperature current value; T2' is used to represent the second temperature previous value; ΔΤ3 is used to represent the third temperature rise value of the third connecting rod bearing 8.3; T3 is used to represent the third temperature current value; T3' is used to represent the third temperature previous value.

[0056] 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 satisfy the artificially preset alarm rule; if the determination result is that the artificially preset alarm rule is satisfied, the monitoring device alarms.

[0057] It should be noted that the alarm rule in step S700 specifically includes the following contents:

[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 combined in a single embodiment to simplify the disclosure. Such a disclosure method should not be interpreted as reflecting the intention that the embodiments of the claimed subject matter require more features clearly stated in each claim. On the contrary, as reflected in the appended claims, the utility model is in a state of less than all the features of the disclosed single embodiment. Therefore, the appended claims are hereby incorporated into the detailed description, in which each claim is separately a preferred embodiment of the utility model.

[0062] In order for any person skilled in the art to implement or use the utility model, the above discloses the disclosed embodiments. For those skilled in the art; various modifications of these embodiments are obvious, and the general principles defined herein can also be applied to other embodiments without departing from the spirit and protection scope of the disclosure. Therefore, the 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, describing all possible combinations of components or methods for describing the above embodiments is impossible, but one of ordinary skill in the art should recognize that various embodiments can be further combined and arranged. Therefore, the embodiments described herein are intended to encompass all such changes, modifications and variations falling within the scope of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the scope is similar to the term "including" as explained in the claims as a conjunction word. In addition, using any one term "or" in the specification of the claims is to mean "non-exclusive or".

[0064] The above description includes examples of one or more embodiments. Of course, describing all possible combinations of components or methods for describing the above embodiments is impossible, but one of ordinary skill in the art should recognize that various embodiments can be further combined and arranged. Therefore, the embodiments described herein are intended to encompass all such changes, modifications and variations falling within the scope of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the scope is similar to the term "including" as explained in the claims as a conjunction word. In addition, using any one term "or" in the specification of the claims is to mean "non-exclusive or". The above description includes examples of one or more embodiments. Of course, describing all possible combinations of components or methods for describing the above embodiments is impossible, but one of ordinary skill in the art should recognize that various embodiments can be further combined and arranged. Therefore, the embodiments described herein are intended to encompass all such changes, modifications and variations falling within the scope of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the scope is similar to the term "including" as explained in the claims as a conjunction word. In addition, using any one term "or" in the specification of the claims is to mean "non-exclusive or".

Claims

1. A temperature monitoring device for the connecting rod bearing of a reciprocating plunger pump, characterized in that: It includes 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 installed on the connecting rod bearing (8) inside the reciprocating plunger pump (1); the wireless temperature sensor (7) is used to convert the temperature into an analog quantity and transmit it outward in wireless signal mode; one end of the signal receiving antenna (10) is installed inside the pump housing of the reciprocating plunger pump (1), and the other end passes through the signal through hole on the pump housing of the reciprocating plunger pump (1) and is electrically coupled to 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) is electrically coupled to the signal analysis module (13). The signal acquisition module (12) acquires the received signal and performs analog-to-digital conversion, and transmits it to the signal analysis module (13). The signal analysis module (13) is used to analyze the data and issue early warnings. 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 plunger pump connecting rod bearing temperature monitoring device according to claim 1, characterized in that: The reciprocating plunger pump (1) includes the connecting rod bearing (8), crankshaft (2), crankshaft bearing (3), crosshead (4), plunger (5), and cylinder block (6); the crankshaft (2) is interference-fitted with the connecting rod bearing (8); the crankshaft (2) is interference-fitted with the crankshaft bearing (3); the plunger (5) is threadedly connected to the crosshead (4); and the cylinder block (6) is slidably connected to the plunger (5).

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

4. The reciprocating plunger pump connecting rod bearing temperature monitoring device according to claim 3, characterized in 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 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 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; there are five wireless temperature sensors (7), which are respectively installed 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 piston pump (1) is a seven-cylinder pump; there are seven wireless temperature sensors (7), which are respectively installed on the seven corresponding connecting rod bearings (8).

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