Hydraulic expansion piece

Abstract

The utility model provides a hydraulic expansion piece which comprises a measuring part used for measuring the expansion amount of an expansion rod, an oil cylinder, the expansion rod and a base, the measuring part, the oil cylinder and the expansion rod are all installed on the base, the oil cylinder is connected with the expansion rod through an oil conveying pipe, and the measuring part is arranged adjacent to the expansion rod. The measuring part is additionally arranged at the telescopic rod of the telescopic device, operation is easy and convenient, the telescopic length distance of the telescopic device can be measured, the stability and accuracy of measurement are guaranteed, and the telescopic accuracy of the telescopic device is improved. The expansion length of the expansion piece can be conveniently and quantitatively displayed in a gas transmission field station in the process of dismounting and mounting a flowmeter and a pipeline, operators can conveniently observe the expansion length in real time, the expansion piece is prevented from being damaged, the phenomenon that resetting is difficult due to the fact that the expansion length exceeds the maximum range in the using process is avoided, and the working efficiency is improved. And the flowmeter and the straight pipe section are convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meter calibration equipment, in particular to a hydraulic expansion joint. Background Art

[0002] At present, the calibration station of natural gas metering and calibration station is generally composed of gas manifold, valve, straight pipe section, rectifier, flow meter, expansion joint, etc., and the connection method is mostly flange connection. When calibrating the flow meter, part of the straight pipe section needs to be removed and replaced by the flow meter to be calibrated. In order to facilitate the installation and removal of the flow meter to be tested during calibration, a hydraulic expansion joint is set at the downstream of each pipeline of the flow meter to be tested. The existing hydraulic expansion joint is directly observed by human beings in terms of expansion length. During use, the expansion amount needs to be observed by naked eyes. There is a possibility that the expansion length may cause difficulty in resetting or cause irreversible damage to the expansion joint.

[0003] The existing hydraulic telescopes have the following problems: first, the telescopic length is fixed, and it is impossible to quantify the telescopic length during actual use. The operator can only manually adjust the hydraulic pressure to the required length based on experience; second, it is difficult to reset the hydraulic telescope after the lifting range exceeds the maximum range during operation, and it is easy to cause damage to the telescope. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a hydraulic telescopic device in view of the deficiencies in the prior art.

[0005] The utility model solves the above-mentioned technical problem with the following technical solution: a hydraulic telescopic device, comprising: a measuring component for measuring the telescopic amount of a telescopic rod, an oil cylinder, a telescopic rod and a base, wherein the measuring component, the oil cylinder and the telescopic rod are all mounted on the base, the oil cylinder is connected to the telescopic rod through an oil pipe, and the measuring component is arranged adjacent to the telescopic rod.

[0006] The beneficial effects of the technical solution of the utility model are: adding a measuring component to the telescopic rod of the telescope is simple and convenient to operate, and can measure the telescopic length of the telescope, ensuring the stability and accuracy of the measurement, and improving the telescopic accuracy of the telescope. It is convenient for the gas transmission station to quantify the telescopic length of the telescope during the disassembly and installation of the flow meter and pipeline, and it is convenient for the operator to observe the telescopic length in real time, avoid damage to the telescope, and avoid the phenomenon of difficulty in resetting when the telescopic length exceeds the maximum range during use, and facilitate the disassembly, installation and maintenance of the flow meter and straight pipe section.

[0007] Furthermore, a push plate for connecting a pipeline is slidably mounted on one end of the base, one end of the telescopic rod is mounted on the base, and the other end of the telescopic rod is connected to the push plate.

[0008] The beneficial effect of adopting the above further technical solution is that the setting of the push plate facilitates the connection of the pipeline.

[0009] Furthermore, the measuring component is mounted on the push plate.

[0010] The beneficial effect of adopting the above further technical solution is that the measuring component is installed on the push plate, which facilitates the installation and maintenance of the measuring component.

[0011] Furthermore, a manual hydraulic rod is installed on the oil cylinder.

[0012] The beneficial effect of adopting the above further technical solution is that a manual hydraulic rod is installed on the oil cylinder, which is convenient for the user to manually hydraulically adjust the oil cylinder to the required length through the manual hydraulic rod.

[0013] Furthermore, the oil cylinder is connected to a pressure gauge.

[0014] The beneficial effect of adopting the above further technical solution is that: the oil cylinder is connected to a pressure gauge, which makes it easy to visually observe the internal pressure of the oil cylinder through the pressure gauge.

[0015] Furthermore, the measuring component is a vernier caliper, and the vernier caliper is arranged parallel to the telescopic rod.

[0016] The beneficial effect of adopting the above further technical solution is that a telescopic scale can be added according to actual needs to realize quantitative display of the telescopic length and accurately grasp the telescopic length of the telescope.

[0017] Furthermore, the measuring component is an infrared rangefinder.

[0018] The beneficial effect of adopting the above further technical solution is that an infrared rangefinder can be installed according to actual needs to realize quantitative display of the telescopic length and accurately grasp the telescopic length of the telescope.

[0019] Furthermore, a limiting bolt is installed on the base.

[0020] The beneficial effect of adopting the above further technical solution is that the setting of the limiting bolt facilitates the realization of the limiting function.

[0021] Furthermore, the other end of the base is provided with a flange for connecting to a pipeline.

[0022] The beneficial effect of adopting the above further technical solution is that the provision of the flange facilitates the connection between the base and the pipeline.

[0023] Furthermore, a support column with a telescopic function is provided at the bottom of the base.

[0024] The beneficial effect of adopting the above further technical solution is that the provision of the support column with telescopic function makes it easy to adjust the height of the base according to actual needs and to align the base with the pipeline.

[0025] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a hydraulic expander provided in an embodiment of the utility model.

[0027] Explanation of the accompanying figures: 1. Pipeline; 2. Support column; 3. Manual hydraulic rod; 4. Pressure gauge; 5. Oil pipeline; 6. Measuring component; 7. Oil cylinder; 8. Limit bolt; 9. Telescopic rod; 10. Base. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] like Figure 1 As shown, an embodiment of the utility model provides a hydraulic telescopic device, including: a measuring component 6 for measuring the telescopic amount of the telescopic rod, a cylinder 7, a telescopic rod 9 and a base 10, the measuring component 6, the cylinder 7 and the telescopic rod 9 are all installed on the base 10, the cylinder 7 is connected to the telescopic rod 9 through an oil pipe 5, and the measuring component 6 is arranged adjacent to the telescopic rod 9.

[0030] The beneficial effects of the technical solution of the utility model are: adding a measuring component to the telescopic rod of the telescope is simple and convenient to operate, and can measure the telescopic length of the telescope, ensuring the stability and accuracy of the measurement, and improving the telescopic accuracy of the telescope. It is convenient for the gas transmission station to quantify the telescopic length of the telescope during the disassembly and installation of the flow meter and pipeline, and it is convenient for the operator to observe the telescopic length in real time, avoid damage to the telescope, and avoid the phenomenon of difficulty in resetting when the telescopic length exceeds the maximum range during use, and facilitate the disassembly, installation and maintenance of the flow meter and straight pipe section.

[0031] The embodiment of the utility model provides a hydraulic expander, which can be provided with a display device for the expansion and contraction amount of the hydraulic expander during the pipeline installation process. A scale (which can be a vernier caliper) or an infrared rangefinder (infrared rangefinder) is installed at the expansion rod of the expander (hydraulic expander). The whole device has a clear structural idea, is simple and convenient to operate, can measure the expansion and contraction length of the expander, ensures the stability and accuracy of the measurement, and improves the expansion and contraction accuracy of the expander.

[0032] The expansion joint expansion and contraction display device (measuring component) can facilitate the gas transmission station to quantify the expansion and contraction length of the expansion joint during the disassembly and installation of the flow meter and pipeline, so as to avoid the expansion and contraction length exceeding the maximum range during use and thus causing difficulty in resetting, and facilitate the disassembly, installation and maintenance of the flow meter and straight pipe section.

[0033] This device replaces the traditional expansion joint and can quantify the expansion length. It is suitable for most natural gas metering stations and calibration stations, allowing operators to observe the expansion length in real time to avoid damage to the expansion joint and the difficulty in resetting due to the expansion length exceeding the maximum range during use. It also facilitates the disassembly, installation and maintenance of flow meters and straight pipe sections.

[0034] like Figure 1 As shown, further, a push plate for connecting the pipeline 1 is slidably mounted on one end of the base 10, one end of the telescopic rod 9 is mounted on the base 10, and the other end of the telescopic rod 9 is connected to the push plate.

[0035] The beneficial effect of adopting the above further technical solution is that the setting of the push plate facilitates the connection of the pipeline.

[0036] like Figure 1 As shown, further, the measuring component 6 is installed on the push plate.

[0037] The beneficial effect of adopting the above further technical solution is that the measuring component is installed on the push plate, which facilitates the installation and maintenance of the measuring component.

[0038] It should be noted that the measuring component can be installed on the push plate or on the base. When a vernier caliper is used as the measuring component, the other end of the measuring component passes through the push plate.

[0039] like Figure 1 As shown, further, a manual hydraulic rod 3 is installed on the oil cylinder 7.

[0040] The beneficial effect of adopting the above further technical solution is that a manual hydraulic rod is installed on the oil cylinder, which is convenient for the user to manually hydraulically adjust the oil cylinder to the required length through the manual hydraulic rod.

[0041] like Figure 1 As shown, further, the oil cylinder 7 is connected to a pressure gauge 4.

[0042] The beneficial effect of adopting the above further technical solution is that: the oil cylinder is connected to a pressure gauge, which makes it easy to visually observe the internal pressure of the oil cylinder through the pressure gauge.

[0043] like Figure 1 As shown, further, the measuring component 6 is a vernier caliper, and the vernier caliper is arranged parallel to the telescopic rod 9.

[0044] The beneficial effect of adopting the above further technical solution is that a telescopic scale can be added according to actual needs to realize quantitative display of the telescopic length and accurately grasp the telescopic length of the telescope.

[0045] Among them, the vernier caliper is provided with a scale.

[0046] like Figure 1 As shown, further, the measuring component 6 is an infrared rangefinder.

[0047] The beneficial effect of adopting the above further technical solution is that an infrared rangefinder can be installed according to actual needs to realize quantitative display of the telescopic length and accurately grasp the telescopic length of the telescope.

[0048] like Figure 1 As shown, further, a limiting bolt 8 is installed on the base 10.

[0049] The beneficial effect of adopting the above further technical solution is that the setting of the limiting bolt facilitates the realization of the limiting function.

[0050] like Figure 1 As shown, further, the other end of the base 10 is provided with a flange for connecting to the pipeline 1.

[0051] The beneficial effect of adopting the above further technical solution is that the provision of the flange facilitates the connection between the base and the pipeline.

[0052] like Figure 1 As shown, further, a support column 2 with a telescopic function is provided at the bottom of the base 10.

[0053] The beneficial effect of adopting the above further technical solution is that the provision of the support column with telescopic function makes it easy to adjust the height of the base according to actual needs and to align the base with the pipeline.

[0054] A hydraulic telescope provided in an embodiment of the utility model is provided with an external display device for the telescopic length of the hydraulic telescope. By installing it on the telescopic rod of the telescope, a telescopic ruler (vernier caliper) or a more accurate infrared rangefinder (infrared rangefinder) can be installed according to actual needs to realize quantitative display of the telescopic length.

[0055] The telescopic amount display device for hydraulic telescopes is mainly composed of pipelines, support columns, manual hydraulic rods, pressure gauges, oil pipelines, vernier calipers or infrared rangefinders, oil cylinders, limit bolts, and telescopic rods. The telescopic length of the hydraulic telescope can be accurately grasped by measuring the components during use.

[0056] A numerical display device (a scale or a more accurate infrared rangefinder) is added to the telescopic rod of the existing manual hydraulic telescope; this method can quantify the telescopic length during actual use, and the operator only needs to check the telescopic scale to accurately grasp it while avoiding the difficulty of resetting or irreversible damage to the telescope due to excessive telescopic length.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A hydraulic expansion joint, characterized in that: include: A measuring component, a cylinder, a telescopic rod and a base are used to measure the telescopic amount of the telescopic rod. The measuring component, the cylinder and the telescopic rod are all installed on the base. The cylinder is connected to the telescopic rod through an oil pipeline. The measuring component is arranged adjacent to the telescopic rod.

2. A hydraulic expansion joint according to claim 1, characterized in that: A push plate for connecting a pipeline is slidably mounted on one end of the base, one end of the telescopic rod is mounted on the base, and the other end of the telescopic rod is connected to the push plate.

3. A hydraulic expander according to claim 2, characterized in that: The measuring component is mounted on the push plate.

4. The hydraulic expander according to claim 1, characterized in that: A manual hydraulic rod is installed on the oil cylinder.

5. The hydraulic expander according to claim 1, characterized in that: The oil cylinder is connected with a pressure gauge.

6. The hydraulic expander according to claim 1, characterized in that: The measuring component is a vernier caliper, and the vernier caliper is arranged parallel to the telescopic rod.

7. The hydraulic expander according to claim 1, characterized in that: The measuring component is an infrared rangefinder.

8. The hydraulic expander according to claim 1, characterized in that: Limiting bolts are installed on the base.

9. The hydraulic expander according to claim 1, characterized in that: The other end of the base is provided with a flange for connecting with a pipeline.

10. The hydraulic expander according to claim 1, characterized in that: A supporting column with a telescopic function is provided at the bottom of the base.

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