Energy accumulator

Abstract

The utility model provides an energy accumulator which comprises a base and a gland, a first cavity is arranged in the base, a second cavity is arranged in the gland, the base is connected with a vibrating mechanism, the first cavity of the base is communicated with a driving cavity of the vibrating mechanism, the gland is connected with the base, the second cavity of the gland is communicated with the first cavity, and an elastic diaphragm is arranged between the first cavity and the second cavity. And the elastic diaphragm separates the first cavity from the second cavity, is made of an elastic material and can deform under the hydraulic action. Buffering and energy storage can be carried out in the hydraulic driving process of the vibration mechanism, the elastic diaphragm is elastically reset when the driving part of the vibration mechanism is in the return stroke, the vibration stability of the vibration mechanism is comprehensively guaranteed, and it is avoided that vibration is transmitted to other structures to affect operation precision or damage parts for a long time as much as possible; the reliability of a vibration mechanism, a drilling machine power head and the like is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power heads of pile hole drilling rigs, in particular to an accumulator. Background Art

[0002] Pile drilling rigs are specialized mechanical equipment widely used in water well and pile hole construction. They are widely used in water well construction in water-scarce areas, in the drilling of air conditioning wells in ground-source heat pump technology, and in the construction of pile holes for high-rise building foundations and bridge foundations in urban construction. Pile drilling rigs are typically equipped with a vibration mechanism, which generates vibrations to perform percussive vibration operations. Vibration is also transmitted and controlled by hydraulic pressure. When high-frequency switching of positive and negative pressure is applied to the vibration mechanism, the circulation of liquid within the vibration mechanism further exacerbates the vibration. This vibration may also be transmitted to other parts of the equipment, causing significant overall vibration, affecting the operation and service life of other parts of the equipment. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies in the above-mentioned background technology and to provide a device that can store energy and buffer the vibration process of the vibration mechanism of the drilling rig power head, thereby reducing the impact of vibration.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an accumulator, including a base and a pressure cover, a first cavity is provided in the base, a second cavity is provided in the pressure cover, the base is connected to a vibration mechanism, the first cavity of the base is communicated with a driving cavity of the vibration mechanism, the pressure cover is connected to the base, the second cavity of the pressure cover is communicated with the first cavity, an elastic diaphragm is provided between the first cavity and the second cavity, the elastic diaphragm separates the first cavity and the second cavity, the elastic diaphragm is made of elastic material and can be deformed under the action of hydraulic pressure.

[0005] Furthermore, bolt holes are correspondingly provided on the vibration mechanism, the base and the pressure cover, and the base and the vibration mechanism, the pressure cover and the base are fixed by installing bolts.

[0006] Furthermore, sealing rings are provided between the base and the vibration mechanism, and between the pressure cover and the base.

[0007] Furthermore, the base is provided with an annular groove, the elastic diaphragm is provided with an annular clamping block matching the annular groove, the annular clamping block is clamped into the annular groove, and the gland clamps the annular clamping block after installation.

[0008] Furthermore, an inflation valve is provided on the gland, and the inflation valve is used to connect to an inflation system to inflate the second cavity so that the second cavity reaches a preset air pressure.

[0009] Furthermore, the elastic diaphragm is made of rubber material.

[0010] The above solution of the utility model has the following beneficial effects:

[0011] The accumulator provided by the utility model can buffer and store energy during the hydraulic driving process of the vibration mechanism through the arrangement of the base and the gland, the combination of the first chamber and the second chamber, and the separation of the elastic diaphragm. The elastic diaphragm elastically resets when the driving part of the vibration mechanism is in the return stroke, thereby comprehensively ensuring the vibration stability of the vibration mechanism, and avoiding as much as possible the vibration transmission to other structures that affects the operation accuracy or causes long-term damage to parts, thereby improving the reliability of the vibration mechanism, the drilling rig power head, etc.

[0012] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a cross-sectional view of the overall structure of the utility model;

[0014] Figure 2 It is a front view of the overall structure of the utility model.

[0015] [Description of Reference Numerals]

[0016] 1-base; 2-pressure cover; 3-first chamber; 4-second chamber; 5-elastic diaphragm; 6-bolt hole; 7-mounting bolt; 8-sealing ring; 9-annular groove; 10-annular block; 11-inflating valve. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a locking connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1 As shown, an embodiment of the present invention provides an accumulator, comprising a base 1 and a gland 2. A first cavity 3 is provided in the base 1, and a second cavity 4 is provided in the gland 2. When the accumulator is installed in place, the first cavity 3 of the base 1 is connected to the driving cavity of the vibration mechanism, and the second cavity 4 of the gland 2 is connected to the first cavity 3. The second cavity 4 and the first cavity 3 together form a buffer cavity. At the same time, an elastic diaphragm 5 is provided between the first cavity 3 and the second cavity 4. The elastic diaphragm 5 separates the first cavity 3 from the second cavity 4. The elastic diaphragm 5 is made of elastic material and can be deformed under the action of hydraulic pressure.

[0021] During positive pressure top drive within the vibration mechanism, liquid enters the first chamber 3 of the base 1 and transmits the liquid pressure to the elastic diaphragm 5, causing it to deform and extend toward the second chamber. Therefore, the liquid pressure within the vibration mechanism is buffered by the buffer chamber and the elastic diaphragm 5, preventing excessive liquid pressure from being transmitted to the actuator of the vibration mechanism. Furthermore, when the negative pressure within the vibration mechanism returns, the elastic diaphragm 5 elastically resets, further improving the efficiency of liquid extraction from the vibration mechanism. Overall, this results in smoother vibrations within the vibration mechanism and minimizes the impact on other components.

[0022] At the same time Figure 2As shown, in this embodiment, the base 1 and gland 2 are both disc-shaped; in other embodiments, they can also be square. Bolt holes 6 are correspondingly provided on the vibration mechanism, base 1, and gland 2. Bolts 7 are used to secure the gland 2 to the base 1, and the base 1 to the vibration mechanism, ensuring a secure installation of the top drive vibrator and the vibration mechanism. Seal rings 8 are provided between the base 1 and the vibration mechanism, and between the gland 2 and the base 1, to ensure the sealing of each chamber.

[0023] As a preferred embodiment, in this embodiment, an annular groove 9 is provided on the base 1, and an annular block 10 is provided on the elastic diaphragm 5 to match the annular groove 9. During installation, the annular block 10 of the elastic diaphragm 5 is inserted into the annular groove 9 and then compressed by the gland 2. Due to the inherent properties of the elastic material, a sealing effect can be generated even after the gland 2 is compressed, thereby sealing the first cavity 3 and the second cavity 4.

[0024] As a preferred embodiment, in this embodiment, the surfaces where the base 1 and the gland 2 contact are both provided with an annular platform. The cooperation of the annular platform can make the installation of the base 1 and the gland 2 more convenient, and can form a better radial limit to prevent the long-term transmission of vibration by the vibration mechanism from causing the gland 2 and the base 1 to loosen. At the same time, since the base 1 and the gland 2 are both configured as discs, multiple bolt holes 6 can be provided in an annularly symmetrical distribution relative to the center line to ensure reliable connection between the gland 2 and the base 1, and between the base 1 and the vibration mechanism. Among them, the installation groove of the sealing ring 8 is set at the annular platform position to ensure the sealing effect.

[0025] As a preferred embodiment, the gland 2 in this embodiment is also equipped with an inflation valve 11. This valve 11 can connect to the inflation system to inflate the second chamber 4 to a preset pressure. Therefore, this solution can pre-deform the elastic diaphragm 5 through inflation, thereby adjusting the actual size of the first and second chambers 3 and 4, as well as the preload force of the elastic diaphragm 5, to adapt to the different vibration conditions of the vibration mechanism and achieve flexible adjustment. It should be noted that only nitrogen can typically be injected into the second chamber 4, and due to the structural and material limitations of the elastic diaphragm 5, the maximum pressure is limited to 80 bar.

[0026] In this embodiment, the elastic diaphragm 5 is preferably made of rubber material, which is easy to obtain, low in cost, and can be easily replaced after long-term use. Since the elastic diaphragm 5 adopts an annular clamping and pressing method, it is relatively easy to disassemble and replace.

[0027] In summary, the accumulator provided in this embodiment can buffer and store energy during the hydraulic drive process of the vibration mechanism through the arrangement of the base 1 and the pressure cover 2, the combination of the first chamber 3 and the second chamber 4, and the separation of the elastic diaphragm 5. When the driving part of the vibration mechanism is in the return stroke, the elastic diaphragm 5 elastically resets, thereby comprehensively ensuring the vibration stability of the vibration mechanism, avoiding as much as possible the transmission of vibration to other structures that affects the operation accuracy or causes long-term damage to parts, and improving the reliability of the vibration mechanism, the drilling rig power head, etc.

[0028] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0029] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. An accumulator, characterized in that: It includes a base and a pressure cover, a first cavity is provided in the base, a second cavity is provided in the pressure cover, the base is connected to the vibration mechanism, the first cavity of the base is communicated with the driving cavity of the vibration mechanism, the pressure cover is connected to the base, the second cavity of the pressure cover is communicated with the first cavity, an elastic diaphragm is provided between the first cavity and the second cavity, the elastic diaphragm separates the first cavity and the second cavity, the elastic diaphragm is made of elastic material and can be deformed under the action of hydraulic pressure.

2. An accumulator according to claim 1, characterized in that: Bolt holes are correspondingly provided on the vibration mechanism, the base and the pressure cover, and the base and the vibration mechanism, the pressure cover and the base are fixed by installing bolts.

3. An accumulator according to claim 1, characterized in that: Sealing rings are provided between the base and the vibration mechanism, and between the pressure cover and the base.

4. An accumulator according to claim 1, characterized in that: The base is provided with an annular groove, the elastic diaphragm is provided with an annular clamping block matching the annular groove, the annular clamping block is clamped into the annular groove, and the gland clamps the annular clamping block after installation.

5. The accumulator according to claim 1, characterized in that: The gland is also provided with an inflation valve, which is used to connect to an inflation system to inflate the second cavity so that the second cavity reaches a preset air pressure.

6. The accumulator according to claim 1, characterized in that: The elastic diaphragm is made of rubber material.

Images