Temperature and pressure integrated automatic control system of oil well cement high-temperature and high-pressure curing kettle

Abstract

The utility model discloses a temperature and pressure integrated automatic control system for an oil well cement high-temperature and high-pressure curing kettle, which comprises a kettle body and a double-loop controller, the double-loop controller is provided with an input end and a pair of output ends, the pair of output ends are respectively connected with an output pipeline, and the output pipeline is connected with an oil well cement high-temperature and high-pressure curing kettle. A pair of output pipelines is arranged in the kettle body, a booster pump and a pressure relief pump are respectively connected onto the pair of output pipelines, a three-way pipe is connected onto the output ends of the booster pump and the pressure relief pump, one end of the three-way pipe is connected with a main pipeline, and the main pipeline is connected with the inlet end of the kettle body. The temperature and pressure can be accurately controlled and the temperature and pressure values can be accurately displayed at the same time in cooperation with the heater, the pressure sensor, the booster pump and the pressure relief pump, impurities in water with the size larger than 60 micrometers can be filtered through the fine water inlet filter, water inlet safety of the booster pump and the pressure relief pump is effectively guaranteed, and the booster pump and the pressure relief pump can stably work for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to an integrated automatic control system for temperature and pressure of a high-temperature and high-pressure curing kettle for oil well cement. Background Art

[0002] At present, the existing high-temperature and high-pressure curing kettle pressure control system used for oil well cement performance at home and abroad adopts electric contact pressure gauge and relief valve to realize automatic pressure control. However, the pressure control accuracy of the electric contact pressure gauge is poor, the accurate pressure value cannot be read, and the relief valve is prone to malfunction, resulting in the equipment being unable to be used stably for a long time. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an integrated automatic control system for temperature and pressure of a high-temperature and high-pressure curing kettle for oil well cement, which solves the problem that the equipment cannot be used stably for a long time due to the poor pressure control accuracy of the electric contact pressure gauge used in the existing curing kettle pressure control system, the inability to read the precise pressure value, and the easy failure of the overflow valve.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: an integrated automatic control system for temperature and pressure of a high-temperature and high-pressure curing kettle for oil well cement, comprising a kettle body and a dual-circuit controller, the dual-circuit controller being provided with an input end and a pair of output ends, the pair of output ends being respectively connected to output pipelines, the pair of output pipelines being respectively connected to a booster pump and a pressure relief pump, the output ends of the booster pump and the pressure relief pump being connected to a tee, one end of the tee being connected to a main pipeline, the main pipeline being connected to the inlet end of the kettle body, a fine water inlet filter and a heater being provided on one side of the dual-circuit controller.

[0005] Preferably, a liquid inlet pipe and a liquid outlet pipe are respectively installed on the liquid inlet end and the liquid outlet end of the fine water inlet filter, the outlet end of the liquid outlet pipe is connected to the inlet end of the heater, and a connecting pipe is installed on the outlet end of the heater, and the connecting pipe is connected to the input end of the dual-loop controller.

[0006] Preferably, a pressure sensor is installed on the main pipeline.

[0007] Beneficial Effects

[0008] The utility model provides an integrated automatic control system for temperature and pressure of a high-temperature and high-pressure curing kettle for oil well cement, which has the following beneficial effects:

[0009] 1. The dual-loop controller, in conjunction with the heater, pressure sensor, booster pump and pressure relief pump, can accurately control the temperature and pressure and display the temperature and pressure values ​​at the same time. The fine water inlet filter can filter impurities in the water above 60 microns, effectively ensuring the water inlet safety of the booster pump and the pressure relief pump, so that the booster pump and the pressure relief pump can work stably for a long time. This control system has the advantages of simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the front view of the utility model.

[0011] In the figure: 1. Dual-loop controller; 2. Pressure sensor; 3. Pressure relief pump; 4. Booster pump; 5. Fine water inlet filter; 6. Heater; 7. Main pipeline. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] See also Figure 1 The utility model provides a technical solution: an integrated automatic control system for temperature and pressure of a high-temperature and high-pressure curing kettle of oil well cement, comprising a kettle body and a dual-circuit controller 1, wherein the dual-circuit controller 1 is provided with an input end and a pair of output ends, wherein the pair of output ends are respectively connected with output pipelines, wherein the pair of output pipelines are respectively connected with a booster pump 4 and a pressure relief pump 3, wherein the output ends of the booster pump 4 and the pressure relief pump 3 are connected with a tee pipe, wherein one end of the tee pipe is connected with a main pipeline 7, wherein the main pipeline 7 is connected with the inlet end of the kettle body, wherein a fine water inlet filter 5 and a heater 6 are provided on one side of the dual-circuit controller 1;

[0014] The dual-loop controller 1 adopts the British Continental controller, which has a pair of output terminals, which can respectively control the use of the booster pump 4 pipeline or the use of the pressure relief pump 3 pipeline;

[0015] The fine water inlet filter 5 is an existing mature technology, which can filter impurities in water with a diameter of more than 60 microns, thereby ensuring the water inlet safety of the booster pump 4 and the pressure relief pump 3.

[0016] Furthermore, a liquid inlet pipe and a liquid outlet pipe are respectively installed on the liquid inlet end and the liquid outlet end of the fine water inlet filter 5, and the outlet end of the liquid outlet pipe is connected to the inlet end of the heater 6. A connecting pipe is installed on the outlet end of the heater 6, and the connecting pipe is connected to the input end of the dual-loop controller 1.

[0017] Furthermore, a pressure sensor 2 is installed on the main pipeline 7 .

[0018] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.

[0019] Embodiment: The dual-loop controller 1 used in this design is a British Continental dual-loop controller. This controller is an existing mature device and is used in a known manner. The target temperature and pressure can be set. The working modes of the heater 6, the booster pump 4 and the pressure relief pump 3 can be controlled by this controller to achieve automatic control of the temperature and pressure of the tank body. The water entering the tank body is first filtered through a fine water inlet filter 5. This filter belongs to the existing mature technology and can filter impurities in water above 60 microns. After filtration, the water will enter the heater 6 for heating, and then enter the tank body through the booster pump 4 or the pressure relief pump 3.

[0020] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Although the embodiments of the utility model have been shown and described, it is understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An integrated automatic control system for temperature and pressure of a high-temperature and high-pressure curing kettle for oil well cement, comprising a kettle body and a dual-circuit controller (1), wherein the dual-circuit controller (1) is provided with an input end and a pair of output ends, and is characterized in that: A pair of the output ends are respectively connected to output pipelines, a pair of the output pipelines are respectively connected to a booster pump (4) and a pressure relief pump (3), the output ends of the booster pump (4) and the pressure relief pump (3) are connected to a tee pipe, one end of the tee pipe is connected to a main pipe (7), the main pipe (7) is connected to the inlet end of the kettle body, and a fine water inlet filter (5) and a heater (6) are provided on one side of the dual-circuit controller (1).

2. The temperature and pressure integrated automatic control system for the high-temperature and high-pressure curing kettle of oil well cement according to claim 1 is characterized in that: A liquid inlet pipe and a liquid outlet pipe are respectively installed on the liquid inlet end and the liquid outlet end of the fine water inlet filter (5), and the outlet end of the liquid outlet pipe is connected to the inlet end of the heater (6). A connecting pipe is installed on the outlet end of the heater (6), and the connecting pipe is connected to the input end of the dual-circuit controller (1).

3. The temperature and pressure integrated automatic control system for high temperature and high pressure curing kettle of oil well cement according to claim 1 is characterized in that: A pressure sensor (2) is installed on the main pipeline (7).

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