Hydraulic underwater mechanical structure pipe clamp
By using hydraulic underwater mechanical pipe clamps, the problems of time-consuming and labor-intensive operation, easy rotation, and poor sealing of existing pipe clamps in pipeline maintenance are solved. This achieves rapid connection and efficient sealing, extends the service life of equipment, and ensures safety and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANGFANG YONGCHUN IND PROD CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-06-12
AI Technical Summary
Existing pipe clamps have problems such as time-consuming and labor-intensive glue injection, inconvenience for remote or underwater operation, easy rotation, poor sealing effect and short service life in pipeline maintenance or construction.
The hydraulic underwater mechanical pipe clamps consist of a main body, a circumferential tightening device, a hydraulic opening and closing bracket, a lifting device, a bolt sleeve, a bottom fixing device, circumferential sealing rubber, axial sealing rubber, axial fastening bolts, sacrificial anodes, test holes, T-bolts, dustproof rings, pressure sensors, and other components. They achieve rapid connection and sealing through hydraulic drive, are equipped with slip sleeves and retaining rings to prevent rotation, and have a self-testing pressure device to check the sealing performance.
It enables fast and convenient pipe connection and sealing, improves sealing effect, extends equipment service life, and ensures safety and environmental protection.
Smart Images
Figure CN224352642U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of underwater pipeline maintenance and repair equipment, specifically to a hydraulic underwater mechanical structure pipe clamp, which can be used for rapid connection of underwater oil and gas transmission pipelines, enabling rapid repair and obstacle removal of underwater pipelines transporting oil and gas, thereby ensuring the safe operation of oil and gas pipelines. Background Technology
[0002] As is well known, pipe clamps are essential equipment in pipeline maintenance and modification, playing a crucial role in connecting pipes and sealing leaks. In pipeline maintenance and modification operations, three types of pipe clamps are commonly used: adhesive-filled clamps, clamps without hydraulic cylinders, and clamps without slips. However, these three types have significant drawbacks, mainly: ① Injecting adhesive is very time-consuming and labor-intensive, and there is a risk of uneven injection; ② Clamps without hydraulic cylinders cannot be easily operated remotely or underwater; ③ Clamps without slips are prone to looping along the pipeline; ④ The lack of a clamping angle makes it difficult to control the deformation of the rubber, affecting the seal. The applicant discovered through a search that prior art patent application CN110541995A discloses a clamping device and a leak-sealing device for a subsea pipeline plugging clamp. The clamping device includes two sets of clamping units respectively installed on opposite ends of the subsea pipeline plugging clamp, and at least one drive mechanism installed on at least one end of the subsea pipeline plugging clamp. The clamping unit includes a clamping tube fitted inside the end of the subsea pipeline plugging clamp, and a piston fitted to the end of the subsea pipeline plugging clamp with one end extending between the clamping tube and the inner wall of the end. One end of the piston and the outer periphery of the clamping tube are provided with mutually cooperating wedge structures. The drive mechanism is connected to and drives the piston to move axially relative to the subsea pipeline plugging clamp. The piston squeezes the clamping tube through the wedge structure, causing the clamping tube to clamp onto the subsea pipeline. However, the applicant found through practice that the above patent application has defects in actual use, such as lack of self-sealing detection effect, poor clamping efficiency, need to improve sealing effect, relatively simple structure and function, and relatively short service life. Based on the above research background, this utility model proposes a hydraulic underwater mechanical structure pipe clamp, aiming to solve the above problems and meet the needs of actual pipeline maintenance or construction. Utility Model Content
[0003] The purpose of this utility model is to solve the above-mentioned technical problems and provide a hydraulic underwater mechanical structure pipe clamp. This device adopts a simpler and more complete structure and has the advantages of convenient installation, labor saving and high efficiency, good sealing effect and long service life. It can not only quickly and easily seal leaking or damaged pipes, but also connect and seal disconnected pipes. It also makes it easy for operators to test the sealing effect, which can greatly protect the safety of equipment, property and the environment.
[0004] To achieve the above objectives, this utility model adopts the following technical solution:
[0005] A hydraulic underwater mechanical structure pipe clamp includes a main body, a circumferential tightening device, a hydraulic opening and closing bracket, a lifting device, a bolt sleeve, a bottom fixing device, circumferential sealing rubber, axial sealing rubber, axial fastening bolts, a sacrificial anode, a test pressure hole, a T-bolt, a dustproof ring, a pressure sensor, a test pressure washer, a circumferential fastening bolt, and a hydraulic cylinder. The main body comprises two symmetrically arranged semi-circular shells hinged at the top. The hydraulic opening and closing bracket is symmetrically arranged on the outer top surface of the two semi-circular shells, and the tops of the two semi-circular shells are hinged together by the lifting device. The fixed end and driving end of the hydraulic cylinder are respectively connected to the hydraulic opening and closing brackets at the top of the two semi-circular shells. The bottom fixing device is fixedly arranged at the bottom of the left and right ends of the two semi-circular shells. The bolt sleeve is connected by a bolt... Bolts are installed on the outer surfaces of the upper and lower parts of the two semi-circular shells and are parallel to each other. Circular tightening devices are installed at the left and right ends of the two semi-circular shells by circular fastening bolts. The two semi-circular shells are connected together by axial fastening bolts. T-bolts are threaded onto bolt sleeves. Sacrificial anodes are installed on the outer circumferential surfaces of the two semi-circular shells. Pressure sensors are installed on the test pressure hole of one of the semi-circular shells, with the axis of the test pressure hole perpendicular to the axis of the semi-circular shell. Test pressure washers are installed on the semi-circular shell with the test pressure hole. Circular sealing rubber is installed on both sides of the test pressure washers, with one side of the circumferential sealing rubber contacting the tightening device and the other side contacting the slip sleeve. Dustproof rings are fitted onto the circumferential tightening devices. Axial sealing rubber is installed on the inner circumferential surface of the semi-circular shell.
[0006] As a further optimization of the above scheme, a wrap-around corner is provided on the outer circumferential surface of the circumferential sealing rubber; threaded holes are provided on the end faces of both ends of the semi-circular shell; the circumferential tightening device is composed of two semi-circular arc blocks, and a first through hole corresponding to the position of the threaded hole is provided on the arc block; the circumferential fastening bolt is connected to the threaded hole of the semi-circular shell through the first through hole; multiple second through holes are provided at intervals at the top and bottom of the two semi-circular shells in the axial direction; the two semi-circular shells are connected together by axial fastening bolts provided in the second through holes; a third through hole is also provided at the upper and lower ends of each arc block; the axis of the third through hole is perpendicular to the axis of the first through hole; the tightening bolt connects the two arc blocks into one unit through the third through hole.
[0007] As a further optimization of the above solution, a self-testing sealing cavity is provided inside the test pressure washer between two rubber sealing rings, and the self-testing sealing cavity is kept in communication with the self-testing hole outside the main body.
[0008] As a further optimization of the above solution, it also includes: a retaining ring, a slip sleeve, and slips; the slips and slip sleeve are set in the semi-circular shell in a shape-fitting connection manner, and the left and right ends of the retaining ring abut against the end faces of the rubber sealing ring and the slips. As a preferred option, the shape-fitting manner of the slip sleeve and the slips can be a wedge-shaped sawtooth fit. Through the pushing of the slip sleeve, the sawtooth on the slips firmly clamps the pipe, which ensures both concentricity of the pipe and prevents the pipe clamp from rotating along the pipe.
[0009] As a further optimization of the above scheme, there are two sets of slips and slip sleeves, and each set of slips and slip sleeves are symmetrically arranged on the left and right sides of the semi-circular shell in a wedge-shaped fit. As a preferred embodiment, each set of slips and slip sleeves consists of several arc-shaped blocks arranged in a ring and adapted to the shape of the semi-circular shell.
[0010] As a further optimization of the above scheme, a positioning pin hole with an axis perpendicular to the axis of the semi-circular shell is provided on the semi-circular shell; the lifting device is a hinge.
[0011] As a further optimization of the above scheme, the pressure sensor is a piezoresistive pressure sensor, a ceramic pressure sensor, or a diffused silicon pressure sensor.
[0012] The advantages of this hydraulic underwater mechanical pipe clamp are as follows: The structural design is more rational; driven by a hydraulic device, it can be remotely opened and closed, saving manpower and resources, and closing more precisely to the designated position; the use of a bolt sleeve and top plate allows the bolts to be quickly pre-tightened using a hydraulic tensioner; the use of rubber corner protectors prevents the rubber from being cut and affecting the seal; the use of a sacrificial anode greatly increases the pipe clamp's lifespan; the use of a dustproof ring prevents mud and dust from entering and affecting the seal, reducing corrosion time; the use of slip sleeves ensures a firm grip on the pipe, preventing rotation and affecting the seal, and also allows connection of two broken pipes; the self-testing gasket allows testing the pipe clamp's sealing performance when the pipe is not in operation, saving costs. Attached Figure Description
[0013] Figure 1 This is a first-view side view structural schematic diagram of a hydraulic underwater mechanical pipe clamp according to this utility model.
[0014] Figure 2 This is a second-view side view structural schematic diagram of a hydraulic underwater mechanical pipe clamp according to this utility model.
[0015] Figure 3 This is a front view schematic diagram of a hydraulic underwater mechanical pipe clamp according to the present invention.
[0016] Figure 4 This is a schematic diagram of the arc-shaped block of the circumferential clamping device of this utility model. Detailed Implementation
[0017] The following is in conjunction with the appendix Figure 1-4 This utility model provides a detailed description of a hydraulic underwater mechanical structure pipe clamp.
[0018] A hydraulic underwater mechanical structure pipe clamp includes a main body 1, a circumferential tightening device 2, a hydraulic opening and closing bracket 3, a lifting device 4, a bolt sleeve 5, a bottom fixing device 6, a circumferential sealing rubber 8, an axial sealing rubber 9, an axial fastening bolt 10, a sacrificial anode 11, a test pressure hole 12, a T-bolt 13, a dustproof ring 14, a pressure sensor 16, a test pressure washer 17, a circumferential fastening bolt 21, and a hydraulic cylinder 22. The main body comprises two symmetrically arranged semi-circular shells hinged at the top. The hydraulic opening and closing bracket is symmetrically arranged on the outer surface of the top of the two semi-circular shells, and the tops of the two semi-circular shells are hinged together by the lifting device. The fixed end and the driving end of the hydraulic cylinder are respectively connected to the hydraulic opening and closing bracket at the top of the two semi-circular shells. The bottom fixing device is fixedly arranged at the left and right ends of the two semi-circular shells. The bottom of the part; bolt sleeves are set on the outer surfaces of the upper and lower parts of the two semi-circular shells by bolts and are parallel to each other; circumferential tightening devices are set at the left and right ends of the two semi-circular shells by circumferential fastening bolts; the two semi-circular shells are connected together by axial fastening bolts; T-bolts are threaded onto the bolt sleeves; sacrificial anodes are set on the outer circumferential surfaces of the two semi-circular shells; pressure sensor 16 is set on the test pressure hole of one of the semi-circular shells, and the axis of the test pressure hole is perpendicular to the axis of the semi-circular shell; test pressure washer is set on the semi-circular shell with test pressure hole; circumferential sealing rubber is set on both sides of the test pressure washer, and one side of the circumferential sealing rubber contacts the tightening device, and the other side of the circumferential sealing rubber contacts the slip sleeve; dustproof ring is sleeved on the circumferential tightening device; axial sealing rubber is set on the inner circumferential surface of the semi-circular shell. A wrap angle 7 is provided on the outer circumferential surface of the circumferential sealing rubber; threaded holes 23 are provided on the end faces of both ends of the semi-circular shell; the circumferential tightening device consists of two semi-circular arc blocks, each arc block having a first through hole 24 corresponding to the position of the threaded hole; circumferential fastening bolts 21 are connected to the threaded holes of the semi-circular shell through the first through holes; multiple second through holes 25 are provided at intervals at the top and bottom of the two semi-circular shells in the axial direction; the two semi-circular shells are connected together by axial fastening bolts 10 provided in the second through holes; each arc block also has a third through hole 26 at its upper and lower ends, the axis of the third through hole being perpendicular to the axis of the first through hole; tightening bolts 15 connect the two arc blocks into one unit through the third through holes. A self-testing pressure sealing cavity is provided inside the test pressure washer between two rubber sealing rings, and the self-testing pressure sealing cavity is kept in communication with the self-testing pressure hole outside the main body. It also includes: a retaining ring 18, a slip sleeve 19, and a slip 20; the slips and slip sleeves are set in the semi-circular shell in a shape-fitting connection manner, with the left and right ends of the retaining ring abutting against the end faces of the rubber sealing ring and the slips. There are two sets of slips and slip sleeves, and each set of slips and slip sleeves is symmetrically arranged on the left and right sides of the semi-circular shell in a wedge-shaped fit. The semi-circular shell has locating pin holes with axes perpendicular to the axis of the semi-circular shell; the lifting device is a hinge.The pressure sensor is a piezoresistive pressure sensor, a ceramic pressure sensor, or a diffused silicon pressure sensor.
[0019] The working principle of this utility model of a hydraulic underwater mechanical structure pipe clamp is as follows: The main body shell of the hydraulic underwater pipe clamp is kept concentric with the pipeline by the lifting device 4. The main body 1 is closed by the hydraulic opening and closing bracket 3, and the positioning pin 15 helps to close the main body to the designated position more precisely. The fixed bolt is loosened by rotating the T-bolt 13, and then the nut of the axial fastening bolt 10 is tightened to push the bolt sleeve and the top plate 5, thus completing the connection between the upper and lower shells. Tightening the circumferential fastening bolts allows the circumferential sealing rubber 8 to complete the axial seal. Tightening the nuts on the circumferential fastening bolts 10 pushes the circumferential tightening device 2, tightening the circumferential fastening devices at both ends of the pipe clamp. The circumferential tightening device 2 pushes the circumferential sealing rubber 8 inward, causing the circumferential sealing rubber to be compressed and deformed, forming a seal with the pipeline, completing the rubber ring sealing action. The rubber wrapping angle 7 protects the rubber from being cut. The bottom fixing device 6 facilitates the placement of the pipe clamp. After completing the above operations, a pressure test is performed by the pressure testing device 12 to verify the sealing performance. The sacrificial anode 11 can increase the lifespan of the pipe clamp. The dustproof ring 14 can effectively prevent dust and sand from entering and affecting the seal of the pipe clamp. The pressure sensor 16 can be used to detect either gas or liquid pressure; the specific selection can be made according to the actual design and usage requirements.
[0020] The above description of the embodiments is provided to enable those skilled in the art to understand and apply the present invention. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the embodiments described herein, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.
Claims
1. A hydraulic underwater mechanical pipe clamp, characterized in that: The system includes a main body, a circumferential tightening device, a hydraulic opening and closing bracket, a lifting device, bolt sleeves, a bottom fixing device, circumferential sealing rubber, axial sealing rubber, axial fastening bolts, a sacrificial anode, a test pressure hole, T-bolts, a dustproof ring, a pressure sensor, a test pressure washer, circumferential fastening bolts, and a hydraulic cylinder. The main body comprises two symmetrically arranged semi-circular shells hinged at the top. The hydraulic opening and closing brackets are symmetrically arranged on the outer top surface of the two semi-circular shells, and the tops of the two semi-circular shells are hinged together by the lifting device. The fixed end and driving end of the hydraulic cylinder are respectively connected to the hydraulic opening and closing brackets at the top of the two semi-circular shells. The bottom fixing device is fixedly installed at the bottom of the left and right ends of the two semi-circular shells. The bolt sleeves are bolted to the upper part of the two semi-circular shells. The outer surfaces of the upper and lower parts are parallel to each other. The circumferential tightening device is set at the left and right ends of the two semi-circular shells by circumferential fastening bolts. The two semi-circular shells are connected together by axial fastening bolts. T-bolts are threaded onto bolt sleeves. Sacrificial anodes are set on the outer circumferential surfaces of the two semi-circular shells. Pressure sensors are set on the test pressure hole of one of the semi-circular shells, and the axis of the test pressure hole is perpendicular to the axis of the semi-circular shell. Test pressure washers are set on the semi-circular shell with test pressure holes. Circumferential sealing rubber is set on both sides of the test pressure washers, with one side of the circumferential sealing rubber contacting the tightening device and the other side contacting the slip sleeve. Dustproof rings are fitted on the circumferential tightening device. Axial sealing rubber is set on the inner circumferential surface of the semi-circular shell.
2. The hydraulic underwater mechanical structure pipe clamp according to claim 1, characterized in that: The outer circumferential surface of the circumferential sealing rubber is provided with a wrapping angle; the end faces of both ends of the semi-circular shell are provided with threaded holes distributed in a ring; the circumferential tightening device is composed of two semi-circular arc blocks, and the arc blocks are provided with first through holes corresponding to the positions of the threaded holes. The circumferential fastening bolts are connected to the threaded holes of the semi-circular shells through the first through holes; multiple second through holes are provided at intervals at the top and bottom of the two semi-circular shells in the axial direction. The two semi-circular shells are connected together by axial fastening bolts provided in the second through holes; the upper and lower ends of each arc block are also provided with third through holes. The axis of the third through hole is perpendicular to the axis of the first through hole. The tightening bolts connect the two arc blocks into one unit through the third through holes.
3. The hydraulic underwater mechanical structure pipe clamp according to claim 1, characterized in that: The test pressure washer has a self-testing pressure sealing cavity between two rubber sealing rings, and the self-testing pressure sealing cavity is connected to the self-testing pressure hole outside the main body.
4. The hydraulic underwater mechanical structure pipe clamp according to claim 3, characterized in that: Also includes: The retaining ring, the slip sleeve, and the slip; the slip and the slip sleeve are set in the semi-circular shell in a shape-fitting connection manner, and the left and right ends of the retaining ring abut against the end faces of the rubber sealing ring and the slip.
5. The hydraulic underwater mechanical structure pipe clamp according to claim 4, characterized in that: There are two sets of both the slip and the slip sleeve, and each set of slips and slip sleeves are symmetrically arranged on the left and right sides of the semi-circular shell in a wedge-shaped fit.
6. The hydraulic underwater mechanical structure pipe clamp according to any one of claims 1-5, characterized in that: The semi-circular shell is provided with a positioning pin hole whose axis is perpendicular to the axis of the semi-circular shell; the lifting device is a hinge.
7. The hydraulic underwater mechanical structure pipe clamp according to any one of claims 1-5, characterized in that: The pressure sensor is a piezoresistive pressure sensor, a ceramic pressure sensor, or a diffused silicon pressure sensor.