Quick dismounting system and method for wearing parts of hydraulic end of drilling pump

Abstract

This invention discloses a rapid disassembly and assembly system and method for vulnerable hydraulic end components of a drilling pump. The rapid disassembly and assembly system includes a hydraulic drive mechanism, a hydraulic valve puller, and at least one of a valve cover assembly, a cylinder head assembly, and a cylinder liner gland assembly. The hydraulic valve puller is used to disassemble the valve seat, a vulnerable hydraulic end component of the drilling pump. The valve cover assembly includes a first plug, a first piston, a first threaded plug, a valve cover, and a first quick-release connector. The cylinder head assembly includes a second plug, a second piston, a second threaded plug, a cylinder head, and a second quick-release connector. The cylinder liner gland assembly includes a gland, a cylinder body, a third quick-release connector, a third piston, and a gland sleeve. The cylinder liner gland assembly is mounted via a cylinder liner seat on the hydraulic cylinder. The rapid disassembly and assembly system and method for vulnerable hydraulic end components of a drilling pump proposed in this invention can improve the efficiency and automation of disassembly and installation of vulnerable hydraulic end components of a drilling pump, and save costs.

Description

Technical Field

[0001] This invention belongs to the field of drilling equipment technology, and relates to a system for disassembling and assembling vulnerable parts, and more particularly to a system and method for quickly disassembling and assembling vulnerable parts of the hydraulic end of a drilling pump. Background Technology

[0002] In oil and gas field exploration and development drilling operations, the replacement of vulnerable parts of the hydraulic end of the drilling pump requires frequent disassembly and assembly of valve cover assemblies, cylinder head assemblies, cylinder liner assemblies, etc., in order to ensure the normal operation of drilling operations.

[0003] Traditional disassembly methods involve manual operation using mechanical tools such as wrenches and pry bars for different components. This is not only inefficient but also requires multiple tools, is time-consuming and labor-intensive, and can easily damage equipment components.

[0004] In view of this, there is an urgent need to design a new method for disassembling and assembling vulnerable parts of the hydraulic end of drilling pumps in order to overcome at least some of the aforementioned defects in the existing disassembly and assembly methods. Summary of the Invention

[0005] This invention provides a system and method for rapid disassembly and assembly of vulnerable hydraulic end components of drilling pumps, which can improve the efficiency and automation of disassembly and assembly of vulnerable hydraulic end components of drilling pumps and save costs.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the following technical solution is adopted:

[0007] A quick disassembly and assembly system for vulnerable hydraulic end components of a drilling pump, the quick disassembly and assembly system comprising: a hydraulic drive mechanism, a hydraulic valve puller, and at least one of a valve cover assembly, a cylinder head assembly, and a cylinder liner gland assembly;

[0008] The drilling pump includes a hydraulic cylinder; the hydraulic cylinder is provided with a valve cover assembly setting position for setting the valve cover assembly and / or a cylinder cover assembly setting position for setting the cylinder head assembly and / or a cylinder liner gland assembly setting position for setting the cylinder liner gland assembly;

[0009] The hydraulic drive mechanism can be connected to the hydraulic valve puller to provide hydraulic pressure to the hydraulic valve puller; the hydraulic valve puller is used to disassemble the valve seat, a vulnerable component of the hydraulic end of the drilling pump, and the valve seat includes a first valve seat and a second valve seat.

[0010] The hydraulic drive mechanism can connect to the valve cover assembly and / or cylinder head assembly and / or cylinder liner gland assembly, and provide hydraulic pressure to the valve cover assembly and / or cylinder head assembly and / or cylinder liner gland assembly;

[0011] The valve cover assembly is used to house the first valve seat, a vulnerable component of the hydraulic end of the drilling pump; the valve cover assembly includes a first plug, a first piston, a first threaded plug, a valve cover, and a first quick-release connector;

[0012] The valve cover has a hollow structure, and a first piston and a first plug are provided inside the valve cover; the first plug is located at the first end of the valve cover.

[0013] The valve cover is provided with a first medium channel, one end of the first medium channel is provided with a first quick-connect connector, and the second end of the first medium channel is provided at the first piston; when the hydraulic drive mechanism delivers hydraulic medium to the first medium channel, it can drive the first piston to move towards the first plug side;

[0014] The cylinder head assembly is used to house the second valve seat, a vulnerable component of the hydraulic end of the drilling pump; the cylinder head assembly includes a second plug, a second piston, a second threaded plug, a cylinder head, and a second quick-release connector;

[0015] The cylinder head has a hollow structure, and the second piston and the second plug are disposed inside the cylinder head; the second plug is disposed at the first end of the cylinder head;

[0016] The cylinder head is provided with a second medium channel, a second quick-connect coupling is provided at the first end of the second medium channel, and the second end of the second medium channel is provided at the second piston; when the hydraulic drive mechanism delivers hydraulic medium to the second medium channel, it can drive the second piston to move towards the second plug side;

[0017] The cylinder liner gland assembly is used to install the hydraulic end cylinder liner of the drilling pump; the cylinder liner gland assembly includes a gland, a cylinder body, a third quick-release connector, a third piston, and a gland; the cylinder liner gland assembly is installed via a cylinder liner seat installed on the hydraulic cylinder;

[0018] The cylinder liner seat has a hollow structure. The cylinder liner seat has a first hollow region and a second hollow region inside. The first hollow region is located on one side of the second hollow region. The cross-section of the second hollow region is larger than the cross-section of the first hollow region.

[0019] The first hollow region is provided with the second end of the cylinder liner and the second end of the pressure sleeve; the pressure sleeve, the third piston and the pressure cap are nested in the cylinder liner, and the third piston is disposed between the pressure sleeve and the pressure cap;

[0020] The second end of the cylinder is disposed in the second hollow region, the third piston is disposed in the cylinder, and the second end of the gland is disposed in the cylinder;

[0021] The cylinder body is provided with a third medium channel, the first end of the third medium channel is connected to the third quick-release connector, and the second end of the third medium channel is connected to the third piston.

[0022] In one embodiment of the present invention, the hydraulic valve puller includes a hydraulic cylinder, a lead screw, a quick-release nut, and a fourth quick-release connector; the hydraulic cylinder has a hollow area, and the lead screw passes through the hollow area of ​​the hydraulic cylinder;

[0023] The quick-release nut includes a first nut unit and a second nut unit. The first nut unit and the second nut unit are provided with a quick-disassembly structure, which can be quickly disassembled and assembled.

[0024] The quick-release nut is located above the hydraulic cylinder in the first state and can lock the lead screw; the quick-release nut can be disassembled in the second state; the hydraulic cylinder is provided with a fourth medium channel, and the fourth medium channel is provided with the fourth quick-release connector.

[0025] In one embodiment of the present invention, the lower part of the lead screw is provided with a chuck, which can hold the valve seat and remove the valve seat by the pulling force of the hydraulic valve puller.

[0026] In one embodiment of the present invention, the hydraulic cylinder is respectively provided with a valve cover assembly mounting position, a cylinder cover assembly mounting position and a cylinder liner gland assembly mounting position;

[0027] The quick disassembly and assembly system includes a valve cover assembly, a cylinder head assembly, and a cylinder liner gland assembly, which are located at a predetermined position on the hydraulic cylinder.

[0028] In one embodiment of the present invention, the valve cover assembly is connected to the hydraulic cylinder by threads; the valve cover is provided with internal threads, the first plug is provided with external threads, and the first plug is connected to the hollow inner wall of the valve cover by threads;

[0029] The first piston is connected to the first plug through a first connecting mechanism, so that the axis of the first piston and the first plug are kept on the same straight line.

[0030] In one embodiment of the present invention, the cylinder head assembly is connected to the hydraulic cylinder via threads; the cylinder head is provided with internal threads, the second plug is provided with external threads, and the second plug is connected to the hollow inner wall of the cylinder head via threads;

[0031] The second piston is connected to the second plug through a second connecting mechanism, so that the axis of the second piston and the second plug are kept in the same straight line.

[0032] In one embodiment of the present invention, the cylinder liner seat is fixedly disposed at a set position of the hydraulic cylinder, and the cylinder liner gland assembly is connected to the cylinder liner seat by threads.

[0033] As one embodiment of the present invention, the quick disassembly and assembly system includes a valve cover assembly, a cylinder head assembly, and a cylinder liner gland assembly.

[0034] According to another aspect of the present invention, the following technical solution is adopted: a rapid disassembly and assembly method utilizing the above-mentioned rapid disassembly and assembly system for vulnerable parts of a drilling pump hydraulic end, the rapid disassembly and assembly method comprising at least one of the following steps:

[0035] Step 1: Install the valve cover assembly: Connect the hydraulic drive mechanism to the first quick-connect coupling, inject high-pressure hydraulic oil into the first medium passage of the valve cover, so that the first piston moves downward under pressure and presses the first plug; tighten the first plug; release the hydraulic oil pressure to zero, and the pressure acting on the first plug acts upward on the first plug and the first valve cover, so that the first valve cover and the hydraulic cylinder are locked together by threads, thus realizing the installation of the valve cover assembly;

[0036] Step 2, Removal of Valve Cover Assembly: Connect the hydraulic drive mechanism to the first quick-release connector, inject high-pressure hydraulic oil into the first medium passage of the valve cover, the first piston moves downward under pressure, the force acting on the first plug and the first valve cover is released to zero, loosen the first plug; release the hydraulic oil pressure to zero, thereby releasing the force acting on the first plug and the valve cover, and realizing the removal of the valve cover assembly;

[0037] Step 3, Cylinder Head Assembly Installation: Connect the hydraulic drive mechanism to the second quick-connect coupling, inject high-pressure hydraulic oil into the second medium passage of the cylinder head, and the second piston moves in the first direction under the action of the high-pressure hydraulic oil, pressing the second plug and tightening the second threaded plug; release the hydraulic oil pressure to zero, and the force of the second plug presses the second threaded plug and cylinder head in the second direction, and tighten the valve cover and hydraulic cylinder through the threads to complete the installation of the cylinder head assembly;

[0038] Step 4, Cylinder Head Assembly Removal: Connect the hydraulic drive mechanism to the second quick-release connector, inject high-pressure hydraulic oil into the second medium channel of the cylinder head, the second piston moves in the first direction under the action of the high-pressure hydraulic oil, the force of the second piston acting on the second plug is released to zero, loosen the second plug; release the hydraulic oil pressure to zero, the force acting on the external thread of the cylinder head is released to zero, unscrew the cylinder head assembly to remove the cylinder head assembly;

[0039] Step 5: Install the cylinder liner gland assembly: Connect the hydraulic drive mechanism to the third quick-connect coupling, inject high-pressure hydraulic oil into the third medium channel of the cylinder body, and the third piston moves towards the hydraulic cylinder under pressure, pushing the gland to press against the cylinder liner. Rotate the gland to make it fit tightly against the third piston and the gland. Release the hydraulic oil pressure to zero, and the gland locks the third piston and the gland in the pressed position, thereby fixing the cylinder liner.

[0040] Step 6: Removing the cylinder liner and gland assembly: Connect the hydraulic drive mechanism to the third quick-connect coupling, inject high-pressure hydraulic oil into the third medium channel of the cylinder body, and the third piston moves towards the hydraulic cylinder under the action of the high-pressure hydraulic oil, pushing the gland and releasing the force acting on the gland to zero. Rotate the gland; the hydraulic oil is depressurized to zero, the thrust of the third piston and the gland is zero, the force acting on the cylinder liner is released, and the cylinder liner is removed.

[0041] Step 7: Valve seat removal: Secure the valve seat to the lower end of the valve using the jaws at the bottom of the lead screw. Then install the hydraulic cylinder and quick-release nut. The quick-release nut is a split type that quickly locks the lead screw. Inject high-pressure hydraulic oil into the hydraulic cylinder through the fourth quick-release connector. The hydraulic cylinder pulls the quick-release nut and lead screw upwards together, loosening the valve seat. Press the button on the quick-release nut, and the quick-release nut will spring open symmetrically, unlocking the connection between the quick-release nut and the lead screw. Remove the hydraulic cylinder and lead screw in sequence to remove the valve seat.

[0042] Step 8: Install the valve seat. Place the valve seat in the installation position and install it according to the steps of installing the valve cover assembly (Step 1) or / and installing the cylinder head assembly (Step 3).

[0043] As one embodiment of the present invention, the quick disassembly and assembly method includes all of steps S1 to S8.

[0044] The beneficial effects of this invention are as follows: the quick disassembly and assembly system and method for vulnerable parts of the hydraulic end of the drilling pump proposed in this invention can improve the efficiency and automation of disassembly and installation of vulnerable parts of the hydraulic end of the drilling pump, and save costs. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of a quick disassembly and assembly system for vulnerable parts of a drilling pump hydraulic end, according to an embodiment of the present invention.

[0046] Figure 2 This is a schematic diagram of the valve cover assembly in one embodiment of the present invention.

[0047] Figure 3 This is a schematic diagram of the cylinder head assembly in one embodiment of the present invention.

[0048] Figure 4 This is a schematic diagram of the cylinder liner gland assembly in one embodiment of the present invention.

[0049] Figure 5 This is a schematic diagram of the structure of a hydraulic valve puller in one embodiment of the present invention.

[0050] Figure 6 This is a schematic diagram showing the usage state of the hydraulic valve puller in one embodiment of the present invention. Detailed Implementation

[0051] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0052] To further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the scope of the claims of the present invention.

[0053] The description in this section pertains to only a few typical embodiments, and the present invention is not limited to the scope of the embodiments described. Substitution of identical or similar prior art methods with some technical features in the embodiments is also within the scope of the description and protection of this invention.

[0054] The steps described in the various embodiments in the specification are for illustrative purposes only, and the implementation of this application is not limited by the order of the steps.

[0055] The term "connection" in the instruction manual includes both direct and indirect connections.

[0056] This invention discloses a quick disassembly and assembly system for vulnerable parts of the hydraulic end of a drilling pump. Figure 1 This is a schematic diagram of a quick disassembly and assembly system for vulnerable parts of a drilling pump hydraulic end, according to an embodiment of the present invention; please refer to [link / reference]. Figure 1 The quick disassembly and assembly system includes: a hydraulic drive mechanism, a hydraulic valve puller 4, and at least one of the following: valve cover assembly 1, cylinder head assembly 2, and cylinder liner gland assembly 3 (which may include one or both of the following: valve cover assembly 1, cylinder head assembly 2, and cylinder liner gland assembly 3).

[0057] The drilling pump includes a hydraulic cylinder 5; the hydraulic cylinder 5 is provided with a valve cover assembly mounting position and / or a cylinder head assembly mounting position and / or a cylinder liner gland assembly mounting position; the hydraulic drive mechanism can be connected to the hydraulic valve puller 4 to provide hydraulic pressure to the hydraulic valve puller 4; the hydraulic valve puller 4 is used to disassemble the valve seat, a vulnerable component of the hydraulic end of the drilling pump, the valve seat including a first valve seat and a second valve seat. The hydraulic drive mechanism can be connected to the valve cover assembly 1 and / or the cylinder head assembly 2 and / or the cylinder liner gland assembly 3 to provide hydraulic driving force to the valve cover assembly 1 and / or the cylinder head assembly 2 and / or the cylinder liner gland assembly 3.

[0058] Figure 2 This is a schematic diagram of the valve cover assembly in one embodiment of the present invention; please refer to [link / reference]. Figure 2The valve cover assembly 1 is used to house the first valve seat, a vulnerable component of the hydraulic end of the drilling pump. The valve cover assembly 1 includes a first plug 101, a first piston 102, a first threaded plug 103, a valve cover 104, and a first quick-release connector 105. The valve cover 104 has a hollow structure, and the first piston 102 and the first threaded plug 103 are disposed inside the valve cover 104. The first plug 101 is disposed at the first end of the valve cover 104.

[0059] The valve cover 104 is provided with a first medium channel 106, one end of which is provided with a first quick-connect connector 105, and the second end of which is provided at the first piston 102. When the hydraulic drive mechanism supplies hydraulic medium to the first medium channel 106, it can drive the first piston 102 to move towards the first plug 101. In one embodiment, the first plug 101 is located below the first piston 102; the first plug 101 is used to seal the notch located above the hydraulic cylinder 5.

[0060] In one embodiment, the valve cover assembly 1 is connected to the hydraulic cylinder 5 by threads; the valve cover 104 is provided with internal threads, the first plug 103 is provided with external threads, and the first plug 103 is connected to the hollow inner wall of the valve cover 104 by threads; the first piston 102 is connected to the first plug through a first connecting mechanism, so that the axis of the first piston and the first plug are kept on the same straight line.

[0061] Figure 3 This is a schematic diagram of the cylinder head assembly in one embodiment of the present invention; please refer to [link / reference]. Figure 3 The cylinder head assembly 2 is used to house the second valve seat, a vulnerable component of the hydraulic end of the drilling pump; the cylinder head assembly 2 includes a second plug 201, a second piston 202, a second threaded plug 203, a cylinder head 204, and a second quick-release connector 205.

[0062] The cylinder head 204 is a hollow structure, and the second piston 202 and the second plug 203 are disposed inside the cylinder head 204; the second plug 201 is disposed at the first end of the cylinder head 204. The cylinder head 204 is provided with a second medium channel 206, the first end of the second medium channel 206 is provided with a second quick-connect connector 205, and the second end of the second medium channel 206 is disposed at the second piston 202; when the hydraulic drive mechanism delivers hydraulic medium to the second medium channel 206, it can drive the second piston 202 to move towards the second plug 201.

[0063] In one embodiment, the cylinder head assembly 2 is connected to the hydraulic cylinder 5 via threads; the cylinder head 204 is provided with internal threads, and the second plug 203 is provided with external threads, and the second plug 203 is connected to the hollow inner wall of the cylinder head 204 via threads; the second piston 202 is connected to the second plug 201 via a second connecting mechanism, so that the axes of the second piston 202 and the second plug 203 are kept on the same straight line.

[0064] Figure 4 This is a schematic diagram of the cylinder liner gland assembly in one embodiment of the present invention; please refer to [link / reference]. Figure 4 The cylinder liner gland assembly 3 is used to mount the hydraulic end cylinder liner of the drilling pump. The cylinder liner gland assembly 3 includes a gland 301, a cylinder body 302, a third quick-release connector 303, a third piston 304, and a gland 305. The cylinder liner gland assembly 3 is mounted on a cylinder liner seat 501 of the hydraulic cylinder 5. The cylinder liner seat 501 has a hollow structure, and the cylinder liner seat 501 has a first hollow region and a second hollow region inside. The first hollow region is located on one side of the second hollow region, and the cross-section of the second hollow region is larger than the cross-section of the first hollow region.

[0065] The first hollow region is provided with the second end of the cylinder liner 502 and the second end of the pressure sleeve 305; the pressure sleeve 305, the third piston 304, and the pressure cap 301 are nested in the cylinder liner 502, and the third piston 304 is disposed between the pressure sleeve 305 and the pressure cap 301. The second end of the cylinder body 302 is disposed in the second hollow region, the third piston 304 is disposed inside the cylinder body 302, and the second end of the pressure cap 301 is disposed inside the cylinder body 302. The cylinder body 302 is provided with a third medium channel 306, the first end of the third medium channel 306 is connected to the third quick-connect connector 303, and the second end of the third medium channel 306 is connected to the third piston 304.

[0066] In one embodiment, the cylinder liner seat 501 is fixedly disposed at a set position of the hydraulic cylinder 5, and the cylinder liner gland assembly 3 is connected to the cylinder liner seat 501 by threads.

[0067] Figure 5 This is a schematic diagram of the hydraulic valve puller in one embodiment of the present invention; please refer to [link / reference]. Figure 5 In one embodiment of the present invention, the hydraulic valve puller 4 includes a hydraulic cylinder 401, a lead screw 402, a quick-release nut 403 and a fourth quick-release connector 404; the hydraulic cylinder 401 has a hollow area, and the lead screw 402 passes through the hollow area of ​​the hydraulic cylinder 401.

[0068] The quick-release nut 403 includes a first nut unit and a second nut unit. Both the first and second nut units are equipped with a quick-release structure for rapid assembly and disassembly. The quick-release structure may include a pressing mechanism, a locking mechanism, a spring, and a latch. Pressing the pressing mechanism disengages the locking mechanism from the latch, thereby releasing the connection between the first and second nut units. Conversely, when the first and second nut units are locked together, they are reconnected.

[0069] The quick-release nut 403 is positioned above the hydraulic cylinder 401 in the first state and can lock the lead screw 402; the quick-release nut 403 can be disassembled in the second state. The hydraulic cylinder 401 is provided with a fourth medium channel 405, and the fourth medium channel 405 is provided with a fourth quick-release connector 404.

[0070] In one embodiment of the present invention, the lower part of the lead screw 402 is provided with a pawl 406, which can hold the valve seat and remove the valve seat.

[0071] In one embodiment of the present invention, the hydraulic cylinder 5 is provided with a valve cover assembly setting position, a cylinder head assembly setting position and a cylinder liner gland assembly setting position; the quick disassembly and assembly system includes a valve cover assembly, a cylinder head assembly and a cylinder liner gland assembly, and the valve cover assembly, cylinder head assembly and cylinder liner gland assembly are set at the set positions of the hydraulic cylinder.

[0072] This invention further discloses a rapid disassembly and assembly method utilizing the above-mentioned rapid disassembly and assembly system for vulnerable parts of the hydraulic end of a drilling pump, characterized in that the rapid disassembly and assembly method includes at least one of the following steps:

[0073] Step 1: Install the valve cover assembly: Connect the hydraulic drive mechanism to the first quick-connect coupling, inject high-pressure hydraulic oil into the first medium passage of the valve cover, so that the first piston moves downward under pressure and presses the first plug; tighten the first plug; release the hydraulic oil pressure to zero, and the pressure acting on the first plug acts upward on the first plug and the first valve cover, so that the first valve cover and the hydraulic cylinder are locked together by threads, thus realizing the installation of the valve cover assembly;

[0074] Step 2, Removal of Valve Cover Assembly: Connect the hydraulic drive mechanism to the first quick-release connector, inject high-pressure hydraulic oil into the first medium passage of the valve cover, the first piston moves downward under pressure, the force acting on the first plug and the first valve cover is released to zero, loosen the first plug; release the hydraulic oil pressure to zero, thereby releasing the force acting on the first plug and the valve cover, and realizing the removal of the valve cover assembly;

[0075] Step 3, Cylinder Head Assembly Installation: Connect the hydraulic drive mechanism to the second quick-connect coupling, inject high-pressure hydraulic oil into the second medium passage of the cylinder head, and the second piston moves in the first direction under the action of the high-pressure hydraulic oil, pressing the second plug and tightening the second threaded plug; release the hydraulic oil pressure to zero, and the force of the second plug presses the second threaded plug and cylinder head in the second direction, and tighten the valve cover and hydraulic cylinder through the threads to complete the installation of the cylinder head assembly;

[0076] Step 4, Cylinder Head Assembly Removal: Connect the hydraulic drive mechanism to the second quick-release connector, inject high-pressure hydraulic oil into the second medium channel of the cylinder head, the second piston moves in the first direction under the action of the high-pressure hydraulic oil, the force of the second piston acting on the second plug is released to zero, loosen the second plug; release the hydraulic oil pressure to zero, the force acting on the external thread of the cylinder head is released to zero, unscrew the cylinder head assembly to remove the cylinder head assembly;

[0077] Step 5: Install the cylinder liner gland assembly: Connect the hydraulic drive mechanism to the third quick-connect coupling, inject high-pressure hydraulic oil into the third medium passage of the cylinder body, and the third piston moves in the third direction under pressure, pushing the gland to press against the cylinder liner. Rotate the gland to make it fit tightly against the third piston and the gland. Release the hydraulic oil pressure to zero, and the gland locks the third piston and the gland in the pressed position, thereby fixing the cylinder liner.

[0078] Step 6: Removing the cylinder liner and gland assembly: Connect the hydraulic drive mechanism to the third quick-connect coupling, inject high-pressure hydraulic oil into the third medium passage of the cylinder body, and the third piston moves in the third direction under the action of high-pressure hydraulic oil, pushing the gland and releasing the force acting on the gland to zero. Rotate the gland; the hydraulic oil is depressurized to zero, the thrust of the third piston and the gland is zero, the force acting on the cylinder liner is released, and the cylinder liner is removed.

[0079] Step 7: Valve seat removal: Secure the valve seat to the lower end of the valve using the jaws at the bottom of the lead screw. Then install the hydraulic cylinder and quick-release nut. The quick-release nut is a split type that quickly locks the lead screw. Inject high-pressure hydraulic oil into the hydraulic cylinder through the fourth quick-release connector. The hydraulic cylinder pulls the quick-release nut and lead screw upwards together, loosening the valve seat. Press the button on the quick-release nut, and the quick-release nut will spring open symmetrically, unlocking the connection between the quick-release nut and the lead screw. Remove the hydraulic cylinder and lead screw in sequence to remove the valve seat.

[0080] Step 8: Install the valve seat. Place the valve seat in the installation position and install the valve seat according to the steps of installing the valve cover assembly (Step 1) and cylinder head assembly (Step 3).

[0081] In one embodiment of the present invention, the rapid disassembly and assembly method includes all of steps S1 to S8; the execution order may not be in the order of steps S1 to S8, and the corresponding steps may be executed as needed.

[0082] In summary, the rapid disassembly and assembly system and method for vulnerable hydraulic end components of drilling pumps proposed in this invention can improve the efficiency and automation of disassembly and installation of vulnerable hydraulic end components of drilling pumps, and save costs.

[0083] It should be noted that this application can be implemented in software and / or a combination of software and hardware; for example, it can be implemented using an application-specific integrated circuit (ASIC), a general-purpose computer, or any other similar hardware device. In some embodiments, the software program of this application can be executed by a processor to implement the steps or functions described above. Similarly, the software program of this application (including related data structures) can be stored in a computer-readable recording medium; for example, RAM memory, magnetic or optical drives, floppy disks, and similar devices. In addition, some steps or functions of this application can be implemented in hardware; for example, as circuitry that cooperates with a processor to perform the various steps or functions.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The description and application of the present invention herein are illustrative and not intended to limit the scope of the invention to the embodiments described above. Effects or advantages involved in the embodiments may not be apparent due to various factors, and the description of effects or advantages is not intended to limit the embodiments. Variations and modifications of the embodiments disclosed herein are possible, and various substitutions and equivalents of the components in the embodiments are well known to those skilled in the art. It should be apparent to those skilled in the art that the invention can be implemented in other forms, structures, arrangements, proportions, and with other components, materials, and parts without departing from the spirit or essential characteristics of the invention. Other variations and modifications can be made to the embodiments disclosed herein without departing from the scope and spirit of the invention.

Claims

1. A quick disassembly and assembly system for vulnerable parts of a drilling pump's hydraulic end, characterized in that, The quick disassembly and assembly system includes: a hydraulic drive mechanism, a hydraulic valve puller, and at least one of a valve cover assembly, a cylinder head assembly, and a cylinder liner gland assembly; The drilling pump includes a hydraulic cylinder; the hydraulic cylinder is provided with a valve cover assembly setting position for setting the valve cover assembly and / or a cylinder cover assembly setting position for setting the cylinder head assembly and / or a cylinder liner gland assembly setting position for setting the cylinder liner gland assembly; The hydraulic drive mechanism can be connected to the hydraulic valve puller to provide hydraulic pressure to the hydraulic valve puller; the hydraulic valve puller is used to disassemble the valve seat, a vulnerable component of the hydraulic end of the drilling pump, and the valve seat includes a first valve seat and a second valve seat. The hydraulic drive mechanism can connect to the valve cover assembly and / or cylinder head assembly and / or cylinder liner gland assembly, and provide hydraulic pressure to the valve cover assembly and / or cylinder head assembly and / or cylinder liner gland assembly; The valve cover assembly is used to house the first valve seat, a vulnerable component of the hydraulic end of the drilling pump; the valve cover assembly includes a first plug, a first piston, a first threaded plug, a valve cover, and a first quick-release connector; The valve cover has a hollow structure, and a first piston and a first plug are provided inside the valve cover; the first plug is located at the first end of the valve cover. The valve cover is provided with a first medium channel, one end of the first medium channel is provided with a first quick-connect connector, and the second end of the first medium channel is provided at the first piston; when the hydraulic drive mechanism delivers hydraulic medium to the first medium channel, it can drive the first piston to move towards the first plug side; The cylinder head assembly is used to house the second valve seat, a vulnerable component of the hydraulic end of the drilling pump; the cylinder head assembly includes a second plug, a second piston, a second threaded plug, a cylinder head, and a second quick-release connector; The cylinder head has a hollow structure, and the second piston and the second plug are disposed inside the cylinder head; the second plug is disposed at the first end of the cylinder head; The cylinder head is provided with a second medium channel, a second quick-connect coupling is provided at the first end of the second medium channel, and the second end of the second medium channel is provided at the second piston; when the hydraulic drive mechanism delivers hydraulic medium to the second medium channel, it can drive the second piston to move towards the second plug side; The cylinder liner gland assembly is used to install the hydraulic end cylinder liner of the drilling pump; the cylinder liner gland assembly includes a gland, a cylinder body, a third quick-release connector, a third piston, and a gland; the cylinder liner gland assembly is installed via a cylinder liner seat installed on the hydraulic cylinder; The cylinder liner seat has a hollow structure. The cylinder liner seat has a first hollow region and a second hollow region inside. The first hollow region is located on one side of the second hollow region. The cross-section of the second hollow region is larger than the cross-section of the first hollow region. The first hollow region is provided with the second end of the cylinder liner and the second end of the pressure sleeve; the pressure sleeve, the third piston and the pressure cap are nested in the cylinder liner, and the third piston is disposed between the pressure sleeve and the pressure cap; The second end of the cylinder is disposed in the second hollow region, the third piston is disposed in the cylinder, and the second end of the gland is disposed in the cylinder; The cylinder body is provided with a third medium channel, the first end of the third medium channel is connected to the third quick-release connector, and the second end of the third medium channel is connected to the third piston.

2. The drilling pump hydraulic end wear component quick disassembly and assembly system according to claim 1, characterized in that: The hydraulic valve puller includes a hydraulic cylinder, a lead screw, a quick-release nut, and a fourth quick-release connector; the hydraulic cylinder has a hollow area, and the lead screw passes through the hollow area of ​​the hydraulic cylinder; The quick-release nut includes a first nut unit and a second nut unit. The first nut unit and the second nut unit are provided with a quick-disassembly structure, which can be quickly disassembled and assembled. The quick-release nut is located above the hydraulic cylinder in the first state and can lock the lead screw; the quick-release nut can be disassembled in the second state; the hydraulic cylinder is provided with a fourth medium channel, and the fourth medium channel is provided with the fourth quick-release connector.

3. The drilling pump hydraulic end wear component quick disassembly and assembly system according to claim 2, characterized in that: The lower part of the lead screw is equipped with a chuck that can hold the valve seat, and the valve seat can be removed by the pulling force of the hydraulic valve puller.

4. The drilling pump hydraulic end wear component quick disassembly and assembly system according to claim 1, characterized in that: The hydraulic cylinders are respectively provided with valve cover assembly mounting position, cylinder cover assembly mounting position and cylinder liner gland assembly mounting position; The quick disassembly and assembly system includes a valve cover assembly, a cylinder head assembly, and a cylinder liner gland assembly, which are located at a predetermined position on the hydraulic cylinder.

5. The drilling pump hydraulic end wear component quick disassembly and assembly system according to claim 1, characterized in that: The valve cover assembly is connected to the hydraulic cylinder via threads; the valve cover has internal threads, the first plug has external threads, and the first plug is connected to the hollow inner wall of the valve cover via threads; The first piston is connected to the first plug through a first connecting mechanism, so that the axis of the first piston and the first plug are kept on the same straight line.

6. The drilling pump hydraulic end wear component quick disassembly and assembly system according to claim 1, characterized in that: The cylinder head assembly is connected to the hydraulic cylinder via threads; the cylinder head has internal threads, the second plug has external threads, and the second plug is connected to the hollow inner wall of the cylinder head via threads; The second piston is connected to the second plug through a second connecting mechanism, so that the axis of the second piston and the second plug are kept in the same straight line.

7. The drilling pump hydraulic end wear component quick disassembly and assembly system according to claim 1, characterized in that: The cylinder liner seat is fixedly installed at a set position of the hydraulic cylinder, and the cylinder liner gland assembly is connected to the cylinder liner seat by threads.

8. The drilling pump hydraulic end wear component quick disassembly and assembly system according to claim 1, characterized in that: The quick disassembly and assembly system includes a valve cover assembly, a cylinder head assembly, and a cylinder liner gland assembly.

9. A method for rapid disassembly and assembly of a drilling pump hydraulic end vulnerable component rapid disassembly and assembly system according to any one of claims 1 to 8, characterized in that, The quick assembly / disassembly method includes at least one of the following steps: Step 1: Install the valve cover assembly: Connect the hydraulic drive mechanism to the first quick-connect coupling, inject high-pressure hydraulic oil into the first medium passage of the valve cover, so that the first piston moves downward under pressure and presses the first plug; tighten the first plug; release the hydraulic oil pressure to zero, and the pressure acting on the first plug acts upward on the first plug and the first valve cover, so that the first valve cover and the hydraulic cylinder are locked together by threads, thus realizing the installation of the valve cover assembly; Step 2, Removal of Valve Cover Assembly: Connect the hydraulic drive mechanism to the first quick-release connector, inject high-pressure hydraulic oil into the first medium passage of the valve cover, the first piston moves downward under pressure, the force acting on the first plug and the first valve cover is released to zero, loosen the first plug; release the hydraulic oil pressure to zero, thereby releasing the force acting on the first plug and the valve cover, and realizing the removal of the valve cover assembly; Step 3, Cylinder Head Assembly Installation: Connect the hydraulic drive mechanism to the second quick-connect coupling, inject high-pressure hydraulic oil into the second medium passage of the cylinder head, and the second piston moves in the first direction under the action of the high-pressure hydraulic oil, pressing the second plug and tightening the second threaded plug; release the hydraulic oil pressure to zero, and the force of the second plug presses the second threaded plug and cylinder head in the second direction, and tighten the valve cover and hydraulic cylinder through the threads to complete the installation of the cylinder head assembly; Step 4, Cylinder Head Assembly Removal: Connect the hydraulic drive mechanism to the second quick-release connector, inject high-pressure hydraulic oil into the second medium channel of the cylinder head, the second piston moves in the first direction under the action of the high-pressure hydraulic oil, the force of the second piston acting on the second plug is released to zero, loosen the second plug; release the hydraulic oil pressure to zero, the force acting on the external thread of the cylinder head is released to zero, unscrew the cylinder head assembly to remove the cylinder head assembly; Step 5: Install the cylinder liner gland assembly: Connect the hydraulic drive mechanism to the third quick-connect coupling, inject high-pressure hydraulic oil into the third medium channel of the cylinder body, and the third piston moves towards the hydraulic cylinder under pressure, pushing the gland to press against the cylinder liner. Rotate the gland to make it fit tightly against the third piston and the gland. Release the hydraulic oil pressure to zero, and the gland locks the third piston and the gland in the pressed position, thereby fixing the cylinder liner. Step 6, Removal of cylinder liner gland assembly: Connect the hydraulic drive mechanism to the third quick-release connector, inject high-pressure hydraulic oil into the third medium channel of the cylinder body, the third piston moves towards the hydraulic cylinder under the action of high-pressure hydraulic oil, pushes the gland, releases the force acting on the gland to zero, and rotates the gland. The hydraulic oil is depressurized to zero, the thrust of the third piston and the pressure sleeve is zero, the force acting on the cylinder liner is released, and the cylinder liner is removed. Step 7: Valve seat removal: Secure the valve seat to the lower end of the valve using the jaws at the bottom of the lead screw. Then install the hydraulic cylinder and quick-release nut. The quick-release nut is a split type that quickly locks the lead screw. Inject high-pressure hydraulic oil into the hydraulic cylinder through the fourth quick-release connector. The hydraulic cylinder pulls the quick-release nut and lead screw upwards together, loosening the valve seat. Press the button on the quick-release nut, and the quick-release nut will spring open symmetrically, unlocking the connection between the quick-release nut and the lead screw. Remove the hydraulic cylinder and lead screw in sequence to remove the valve seat. Step 8: Install the valve seat. Place the valve seat in the installation position and install the valve cover assembly according to Step 1 and / or the cylinder head assembly according to Step 3 to complete the valve seat installation.

10. The quick assembly / disassembly method according to claim 9, characterized in that: The rapid disassembly and assembly method includes all of steps S1 to S8.

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