Pressure test pump testing device

Abstract

The invention provides a pressure test pump testing device which comprises a cavity, a first baffle and a piston plate, the first baffle and the piston plate are arranged in the cavity oppositely, a test medium is filled between the first baffle and the piston plate, and the top end face and the bottom end face of the piston plate are both connected with the inner wall of the cavity in a sliding and sealing mode. The top end face and the bottom end face of the first baffle are both in sealed connection with the inner wall of the cavity, the side, away from the baffles, of the piston plate is connected with a pressure testing pump, the cavity is connected with a testing mechanism, water flow pumped out by the pressure testing pump pushes the piston plate to slide towards the baffles, and the piston plate pushes a testing medium to enter the testing mechanism. The pressure test device can isolate a test medium from the pressure test pump, can play a role in buffering in the test process, reduces pressure fluctuation, and prevents the pressure test pump from being damaged by sharp pressure drop.

Description

Technical Field

[0001] The present invention relates to the field of pressure test pump testing, and specifically, to a pressure test pump testing device. Background Art

[0002] With the continuous development of drilling technology, deep wells and ultra-deep wells have gradually become the main direction of oil and gas development. Along with the increase in the operating environment pressure of cementing tools, as the main equipment for ground testing of downhole tools, high-pressure fluctuations and special test media will cause great damage to the pressure test pump. When selecting mud as the test medium, since it is impossible to complete the pressure test pump test under the premise of effectively isolating the test medium, each test will damage the pressure test pump, resulting in great economic losses. At the same time, due to the high-pressure fluctuations during the test, it is very difficult for the testing agency to ensure the accuracy of the obtained pressure. Summary of the Invention

[0003] An object of the present invention is to provide a pressure test pump testing device, which can isolate the test medium from the pressure test pump through the sealing effect between the piston plate and the inner wall of the cavity, and can smoothly conduct tests for any test medium. At the same time, by driving the piston plate to move towards the first baffle by water flow, it can play a buffering role during the test, reduce pressure fluctuations, and avoid sharp pressure drops from damaging the pressure test pump.

[0004] According to the present invention, there is provided a pressure test pump testing device, including: a cavity, a first baffle and a piston plate disposed in the cavity, the first baffle and the piston plate are disposed opposite to each other and the space between them is filled with a test medium, the top surface and the bottom surface of the piston plate are both slidably and sealingly connected to the inner wall of the cavity, and the top surface and the bottom surface of the first baffle are both sealingly connected to the inner wall of the cavity. The side of the piston plate away from the baffle is connected to a pressure test pump, and the cavity is connected to a testing mechanism. The water flow pumped out by the pressure test pump pushes the piston plate to slide towards the baffle, and the piston plate pushes the test medium into the testing mechanism.

[0005] In a preferred embodiment, the pressure test pump testing device further includes: a union joint embedded in the cavity from the outer wall of the cavity, the union joint is disposed on the side of the first baffle close to the piston plate and adjacent to the first baffle.

[0006] In a preferred embodiment, the pressure test pump testing device further includes: a sensor disposed on the side of the union joint away from the first baffle, the sensor is disposed inside the wall of the cavity and adjacent to the union joint, and is communicatively connected to an audible and visual alarm.

[0007] In a preferred embodiment, the pressure test pump testing device further includes: a stop block embedded in the outer wall of the union joint from the outer wall of the cavity.

[0008] In a preferred embodiment, a locking sleeve is sleeved on the outer surface of the union joint, and the inner wall of the lower end of the locking sleeve is in pressing contact with the side wall of the stop block.

[0009] In a preferred embodiment, the side of the piston plate away from the first baffle is connected to a pressure test pump through a sealed water injection cavity.

[0010] In a preferred embodiment, the pressure test pump testing device further includes: a second baffle disposed on the side of the piston plate away from the first baffle, and a head whose lower surface is sealingly connected to the top surface of the second baffle. The wall of the cavity extends towards the direction close to the second baffle to form an extension part, and the upper surface of the head is sealingly connected to the lower surface of the extension part through a sealing ring.

[0011] In a preferred embodiment, the pressure test pump testing device further includes: the injection and pressure application nozzle whose first end passes through the second baffle and communicates with the water injection cavity, and the second end of the injection and pressure application nozzle is connected to a pressure test pump.

[0012] In a preferred embodiment, the pressure test pump testing device further includes: a discharge and pressure application nozzle whose first end passes through the first baffle and is connected to the inside of the cavity, and the second end of the discharge and pressure application nozzle is connected to a testing mechanism.

[0013] In a preferred embodiment, the top of the union joint has a port, and the port can be sealed by a plug.

[0014] The present invention at least has the following technical effects:

[0015] According to the present invention, a cavity, a first baffle and a piston plate disposed in the cavity are provided. The first baffle and the piston plate are oppositely arranged and a test medium is filled between them. The top surface and the bottom surface of the piston plate are both slidably and sealingly connected to the inner wall of the cavity, and the top surface and the bottom surface of the first baffle are both sealingly connected to the inner wall of the cavity. The side of the piston plate away from the first baffle is connected to a pressure test pump, and the cavity is connected to a testing mechanism. The water flow pumped out by the pressure test pump pushes the piston plate to slide towards the first baffle, and the piston plate pushes the test medium into the testing mechanism. Through the sealing effect between the piston plate and the inner wall of the cavity, the test medium can be isolated from the pressure test pump, and any test medium can be smoothly tested. At the same time, by driving the piston plate to move towards the first baffle by the water flow, a buffering effect can be achieved during the testing process, reducing pressure fluctuations and avoiding sharp pressure drops from damaging the pressure test pump.

[0016] According to the present invention, a sensor is provided on the side of the union joint away from the first baffle. The sensor is disposed inside the wall of the cavity and adjacent to the union joint, and the sensor is communicatively connected to the acoustic-optic alarm. When the piston plate moves towards the first baffle and passes through the position of the sensor, the sensor can emit a signal and control the acoustic-optic alarm to give an alarm, and the operator can stop further pressurizing. This can prevent, after continuous pressurizing, the piston plate from moving to the union joint, resulting in the sealing failure between the piston plate and the inner wall of the cavity, and thus the inability to isolate the test medium from water.

[0017] According to the present invention, the first end of the discharge nozzle passes through the first baffle and is connected to the inside of the cavity, and the second end of the discharge nozzle is connected to the test mechanism. During the process of the water pumped out by the pressure test pump pushing the piston plate to slide towards the baffle, the test medium between the piston plate and the baffle can enter the test mechanism through the discharge nozzle in real time, ensuring the smooth progress of the test. Description of the Drawings

[0018] Figure 1 Schematically shows the overall structural schematic diagram of the pressure test pump test device according to the present invention.

[0019] In this application, all the drawings are schematic drawings, only used to illustrate the principle of the present invention, and are not drawn according to the actual ratio. Detailed Embodiments

[0020] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In the present invention, "a plurality of" refers to two or more.

[0022] In the present invention, unless otherwise clearly defined and limited, terms such as "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] As Figure 1 shown, the pressure test pump testing device 100 according to the present invention includes: a cavity 81, a first baffle 1 and a piston plate 9 disposed in the cavity 81. The first baffle 1 and the piston plate 9 are oppositely disposed and the space between them is filled with a test medium (such as mud). The top and bottom end faces of the piston plate 9 are slidably and sealingly connected to the inner wall forming the cavity 81, and the top and bottom end faces of the first baffle 1 are sealingly connected to the inner wall forming the cavity 81. The side of the piston plate 9 away from the first baffle 1 is connected to a pressure test pump, and a testing mechanism (not shown in the figure) is connected to the cavity 81. During the process of pressure testing the pressure test pump, the water flow pumped out by the pressure test pump (not shown in the figure) pushes the piston plate 9 to slide towards the first baffle 1, and the piston plate 9 pushes the test medium into the testing mechanism. Optionally, the top and bottom end faces of the piston plate 9 are slidably and sealingly connected to the inner wall forming the cavity 81 through sealing rings; the top and bottom end faces of the first baffle 1 are sealingly connected to the inner wall forming the cavity 81 through sealing rings 2. It should be noted that the testing mechanism can adopt any conventional equipment for testing a pressure test pump.

[0024] According to the present invention, there are provided a cavity 81, a first baffle 1 and a piston plate 9 disposed in the cavity 81. The first baffle 1 and the piston plate 9 are oppositely disposed and the space between them is filled with a test medium. The top and bottom end faces of the piston plate 9 are slidably and sealingly connected to the inner wall of the cavity 81, and the top and bottom end faces of the first baffle 1 are sealingly connected to the inner wall of the cavity 81. The side of the piston plate 9 away from the first baffle 1 is connected to a pressure test pump, and the cavity 81 is connected to a testing mechanism. The water flow pumped out by the pressure test pump pushes the piston plate 9 to slide towards the first baffle, and the piston plate 9 pushes the test medium into the testing mechanism. Through the sealing effect between the piston plate 9 and the inner wall of the cavity 81, the test medium can be isolated from the pressure test pump, and the test can be smoothly carried out for any test medium. At the same time, by driving the piston plate 9 to move towards the first baffle 1 by the water flow, a buffering effect can be achieved during the testing process, reducing pressure fluctuations and avoiding sharp pressure drops from damaging the pressure test pump.

[0025] In one or more embodiments, the pressure test pump testing device 100 according to the present invention further includes: a discharge pressure nozzle 14. The first end of the discharge pressure nozzle 14 passes through the first baffle 1 and is connected to the inside of the cavity 81, and the second end of the discharge pressure nozzle 14 is connected to the testing mechanism.

[0026] According to the present invention, the first end of the discharge pressure nozzle 14 passes through the first baffle 1 and is connected to the inside of the cavity 81, and the second end of the discharge pressure nozzle 14 is connected to the testing mechanism. During the process of the water flow pumped out by the pressure test pump pushing the piston plate 9 to slide towards the baffle 1, the test medium between the piston plate 9 and the baffle 1 can enter the testing mechanism in real time through the discharge pressure nozzle 14, ensuring the smooth progress of the test.

[0027] In one or more embodiments, the pressure test pump testing device 100 of the present invention further includes: a union joint 5 embedded in the outer wall of the top of the cavity 81 into the cavity 81. The union joint 5 is disposed on one side of the first baffle 1 close to the piston plate 9 and adjacent to the first baffle 1. Mud can be poured into the interior of the cavity 81 through the union joint 5.

[0028] In one or more embodiments, the top of the union joint 5 has a port, which can be sealed by tightening the plug 4 after the test.

[0029] In one or more embodiments, the pressure test pump testing device 100 of the present invention further includes: a stop block 3 embedded in the outer wall of the union joint 5 from the outer wall of the cavity 81. The stop block 3 is used to prevent relative rotation between the union joint 5 and the cavity 81 during the process of tightening the plug 4. Optionally, the union joint 5 is provided with a step portion at the bottom, and the step portion and the wall of the cavity 81 are sealed by a sealing ring.

[0030] In one or more embodiments, a locking sleeve 6 is sleeved on the outer surface of the union joint 5, and the inner wall of the lower end of the locking sleeve 6 is in pressing contact with the side wall of the stop block 3, so as to enhance the stability of the union joint 5 through the locking sleeve 6 and further enhance the anti-rotation function of the stop block 3. Optionally, the locking sleeve 6 is threadedly connected to the union joint 5. During the installation of the locking sleeve 6, the locking sleeve thread can be tightened first, and then the union joint 5 is installed on the outer wall of the cavity 81 and sealed by a sealing ring. Optionally, an anti-loosening screw hole is provided on the locking sleeve 6. During the test, a set screw can be screwed into the anti-loosening screw hole to prevent the connection thread between the locking sleeve 6 and the union joint 5 from loosening.

[0031] In one or more embodiments, the side of the piston plate 9 away from the first baffle 1 is connected to a pressure test pump through a sealed water injection cavity 82.

[0032] The pressure test pump testing device 100 of the present invention further includes: a second baffle 11 disposed on the side of the piston plate 9 away from the first baffle 1 and a head 12 whose lower surface is sealingly connected to the top surface of the second baffle 11. The wall of the cavity 81 extends towards the direction close to the second baffle 11 to form an extension portion. The upper surface of the head 12 abuts against the lower surface of the extension portion and is sealed by a sealing ring 10, so that a sealed water injection cavity 82 is formed between the lower surface of the head 12, the second baffle 11 and the surface of the piston plate 9 on the side away from the baffle 1.

[0033] In one or more embodiments, the pressure test pump testing device 100 of the present invention further includes: an injection and pressure application nozzle 13. The first end of the injection and pressure application nozzle 13 passes through the second baffle 11 and communicates with the sealed water injection cavity 82, and the second end of the injection and pressure application nozzle 13 is connected to the pressure test pump.

[0034] According to the present invention, the first end of the injection and pressure nozzle 13 passes through the second baffle 11 and communicates with the sealed water injection cavity 82, and the second end of the injection and pressure nozzle 13 is connected to a pressure test pump, so that the water pumped out by the pressure test pump can enter the water injection cavity 82 and push the piston plate 9 to slide towards the baffle 1, and the piston plate 9 then pushes the test medium into the test mechanism.

[0035] In one or more embodiments, the pressure test pump testing device 100 according to the present invention further includes: a sensor 7 disposed on the side of the union joint 5 away from the first baffle 1, and the sensor 7 is disposed inside the wall of the cavity 81 and adjacent to the union joint 5.

[0036] According to the present invention, there is provided a sensor 7 disposed on the side of the union joint 5 away from the first baffle 1. The sensor 7 is disposed inside the wall of the cavity 81 and adjacent to the union joint 5, and the sensor 7 is communicatively connected to an audible and visual alarm (not shown in the figure). When the piston plate 9 moves towards the first baffle 1 and passes through the position of the sensor 7, the sensor 7 can emit a signal and control the audible and visual alarm to give an alarm, and the operator can then stop further pressurization, thereby avoiding that after further pressurization, the piston plate 9 moves to the union joint 5, resulting in the sealing failure between the piston plate 9 and the inner wall of the cavity 81, and further preventing the isolation of the test medium from water.

[0037] Although the present invention has been described with reference to the preferred embodiments, various modifications can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pressure test pump testing device, comprising: A cavity, a first baffle and a piston plate arranged in the cavity, the first baffle and the piston plate are oppositely arranged and the space between them is filled with a test medium. The top and bottom end faces of the piston plate are both slidably and sealingly connected to the inner wall of the cavity, and the top and bottom end faces of the first baffle are both sealingly connected to the inner wall of the cavity. The side of the piston plate away from the baffle is connected to a pressure test pump, and the cavity is connected to a test mechanism. The water flow pumped out by the pressure test pump pushes the piston plate to slide towards the baffle, and the piston plate pushes the test medium into the test mechanism.

2. The pressure test pump testing device according to claim 1, wherein, Further comprising: A union joint embedded in the cavity from the outer wall of the cavity, the union joint is arranged on the side of the first baffle close to the piston plate and adjacent to the first baffle.

3. The pressure test pump testing device according to claim 2, wherein, Further comprising: A sensor arranged on the side of the union joint away from the first baffle, the sensor is arranged inside the wall of the cavity and adjacent to the union joint, and is communicatively connected to an audible and visual alarm.

4. The pressure test pump testing device according to claim 2, characterized in that, Further comprising: A stop block embedded in the outer wall of the union joint from the outer wall of the cavity.

5. The pressure test pump testing device according to claim 4, characterized in that, A locking sleeve is sleeved on the outer surface of the union joint, and the inner wall of the lower end of the locking sleeve is in pressing contact with the side wall of the stop block.

6. The pressure test pump testing device according to claim 1 or 2, characterized in that The side of the piston plate away from the first baffle is connected to the pressure test pump through a sealed water injection cavity.

7. The pressure test pump testing device according to claim 6, wherein, Further comprising: A second baffle arranged on the side of the piston plate away from the first baffle and a head whose lower surface is sealingly connected to the top surface of the second baffle. The wall of the cavity extends towards the direction close to the second baffle to form an extension part, and the upper surface of the head and the lower surface of the extension part are sealingly connected through a sealing ring.

8. The pressure test pump testing device according to claim 7, characterized in that Further comprising: An injection and pressure application nozzle whose first end passes through the second baffle and communicates with the water injection cavity, and the second end of the injection and pressure application nozzle is connected to the pressure test pump.

9. The pressure test pump testing device according to claim 1, characterized in that, Further comprising: An exhaust and pressure application nozzle whose first end passes through the first baffle and is connected to the inside of the cavity, and the second end of the exhaust and pressure application nozzle is connected to the test mechanism.

10. The pressure test pump testing device according to claim 4, characterized in that, The top of the union joint has a port, and the port can be sealed by a plug.

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