CN216110572U

CN216110572U - Rotary joint of manifold device

Info

Publication number: CN216110572U
Application number: CN202121402432.7U
Authority: CN
Inventors: 祝茂林; 田雨; 罗权; 苗如
Original assignee: Sichuan Honghua Petroleum Equipment Co Ltd
Current assignee: Sichuan Honghua Petroleum Equipment Co Ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-03-22
Anticipated expiration: 2031-06-23

Abstract

The utility model relates to the technical field of oil and gas drilling equipment, in particular to a rotary joint of a manifold device, which comprises a first pipe fitting and a second pipe fitting, wherein the first pipe fitting is provided with an assembling hole, the second pipe fitting is in nested fit with the assembling hole, the second pipe fitting is sleeved with a gland, the gland partially extends into the assembling hole and is in threaded connection with the first pipe fitting, a sealing assembly is arranged between the outer wall of the second pipe fitting and the assembling hole, the gland is abutted against the sealing assembly, so that the first pipe fitting and the second pipe fitting can axially rotate, the sealing effect is good, the technical effects of long service life, low replacement frequency and low possibility of puncture and leakage can be realized under the working condition of high pressure and large displacement, the current situation that a high-pressure movable elbow depends on an inlet is solved, and the use cost of the manifold device is reduced.

Description

Rotary joint of manifold device

Technical Field

The utility model relates to the technical field of oil and gas drilling equipment, in particular to a rotary joint of a manifold device.

Background

The high-low pressure combined manifold is special equipment for collecting and conveying well cementation liquid and fracturing liquid discharged by a well cementation pump and a fracturing pump and high-pressure fluid returned by a stratum, the bypass manifold device is special equipment for communicating a high-pressure output end of the pump with a high-pressure access port of the high-low pressure combined manifold, the traditional bypass manifold device is formed by matching 4-5 50 or 10 high-pressure movable elbows with 2-3 integral straight pipe high-pressure pipelines with different lengths, and the connecting mode mainly has the following defects:

1. the layout and the trend of pipelines are irregular, so that the on-site pipeline arrangement is disordered, and potential safety hazards are brought;

2. the wall thickness of the elbow part of the high-pressure movable elbow is thinner than that of the other parts, the service life is short under the working condition of high pressure and large discharge capacity, and the replacement frequency is high;

3. the rotating part of the high-pressure movable elbow is sealed by an end face rubber sealing ring, and the stability of a sealing structure is poor, so that the part is easy to puncture;

4. the high-pressure movable elbow depends on import in a large quantity, and the price is high, so that the overall cost of field construction operation is high for a long time.

Therefore, a technical scheme is urgently needed at present to solve the technical problems that the high-pressure movable elbow of the existing bypass manifold device is short in service life, high in replacement frequency and poor in stability of a sealing structure, and therefore the site construction operation cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the rotary joint of the manifold device is provided for solving the technical problems that the high-pressure movable elbow of the existing bypass manifold device is short in service life, high in replacement frequency and poor in stability of a sealing structure, and accordingly site construction operation cost is high.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a swivel joint of manifold device, includes first pipe fitting and second pipe fitting, first pipe fitting is provided with the pilot hole, the second pipe fitting with the nested cooperation of pilot hole, second pipe fitting cover are equipped with the gland, the gland part stretches into in the pilot hole, with first pipe fitting threaded connection, second pipe fitting outer wall with be provided with seal assembly between the pilot hole, the gland butt is in seal assembly is last.

According to the rotating joint of the manifold device, the first pipe fitting and the second pipe fitting can axially rotate through the matching of the gland and the sealing assembly, the sealing effect is good, the technical effects of long service life, low replacement frequency and low possibility of puncture and leakage can be realized under the working condition of high pressure and large discharge capacity, the current situation that a high-pressure movable elbow depends on an inlet is solved, and the use cost of the manifold device is reduced.

As a preferable mode of the present invention, the sealing assembly includes a sealing packing and a grease-filled lubricant which are arranged at intervals, the sealing packing is arranged on one side of the grease-filled lubricant which is close to the bottom of the mounting hole, and the gland abuts against the grease-filled lubricant. The sealing packing is used as a main sealing part between the first pipe fitting and the second pipe fitting, the structural stability is good, meanwhile, the rotating part is lubricated by the grease injecting lubrication piece, so that the first pipe fitting and the second pipe fitting rotate smoothly relatively, the using effect of the rotating joint is good, and meanwhile, the grease injecting lubrication piece is blocked on one side of the sealing packing, and the structural stability of the sealing part is further improved.

As a preferable aspect of the present invention, a seal is provided between the sealing packing and the grease-filled lubrication member. The sealing part is blocked between the sealing filler and the grease injection lubricating piece, secondary sealing to the rotary joint is formed by matching the sealing filler, the sealing effect of the sealing part is further improved, the sealing part can block the lubricating agent from contacting the sealing filler, and the long-time effectiveness of the lubricating effect can be ensured.

As a preferable aspect of the present invention, the outer wall of the second pipe is provided with a boss, the boss is located between the seal packing and the grease-injected lubricating piece, the gland abuts against the boss through the grease-injected lubricating piece, and the seal is provided on the boss. The arrangement of the boss further increases the blocking surface between the sealing filler and the grease injection lubrication piece, and improves the sealing effect and the using effect of the rotating part of the rotating joint.

As a preferable scheme of the present invention, the grease injection lubricating member includes a spacer ring sleeved on the second pipe, the first pipe is provided with a grease injection channel, and the grease injection channel is communicated with a surface of the spacer ring.

As a preferable scheme of the present invention, the spacer ring is provided with a plurality of oil passage holes, and the oil passage holes penetrate through the spacer ring. The oil duct hole communicates with the side face of the spacer ring, so that the lubricant injected from the grease injection channel can lubricate a plurality of surfaces of the spacer ring, and the lubricating effect is better.

As a preferable scheme of the utility model, the first pipe fitting is provided with at least one observation hole, one end of the observation hole penetrates through the pipe wall of the first pipe fitting, and the penetration point of the observation hole on the inner surface of the first pipe fitting is positioned between the sealing filler and the grease injection lubricating piece. Whether the sealing filler fails or not can be intuitively known through the observation hole, so that the sealing failure of the rotary joint can be discovered as soon as possible, and the normal use of the manifold device is ensured.

As a preferable scheme of the present invention, a dust-proof member is disposed between the inner wall of the gland and the outer wall of the second pipe member. The dustproof piece can prevent impurities such as external dust from entering the gap where the sealing assembly is located, and can also prevent lubricant from flowing out of the gap, and the service life of the rotary joint is further prolonged.

As a preferable scheme of the utility model, the gland is detachably connected with an anti-loosening block, the first pipe fitting is provided with a groove matched with the anti-loosening block, the anti-loosening block is embedded in the groove, and the gland is provided with a limit groove matched with the anti-loosening block. The setting of anti-loosening block can guarantee the structural stability of gland and first pipe fitting in the swivel use.

As a preferable scheme of the present invention, the first pipe fitting and the second pipe fitting are straight pipes or bent pipes, and one ends of the first pipe fitting and the second pipe fitting, which are away from each other, are provided as a union joint or a flange joint, and the union joint or the flange joint is a pipe fitting integral molding piece or a pipe fitting assembly. The straight pipe or the bent pipe can be selected according to actual conditions to assemble and form the rotary joint, so that the adjustment of the inlet and outlet directions of the rotary joint is realized more easily, and the rotary joint is more adaptive to the use environment.

The utility model also discloses a manifold device, which comprises at least one rotating joint, wherein when the manifold device comprises a plurality of rotating joints, the adjacent rotating joints are detachably connected, or a connecting pipeline is arranged between the adjacent rotating joints for prolonging, so that the inlet and the outlet of the manifold device can be adjusted to any direction, the length can be adjusted according to the actual condition and can be adapted to the arrangement positions of equipment arranged at two ends of the manifold device, and the manifold device can be applied to the communication between a fracturing pump and a high-low pressure manifold pry and between a fracturing tree and a shunt manifold pry.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

through the cooperation of gland and seal assembly between first pipe fitting and second pipe fitting, make first pipe fitting and second pipe fitting axial rotation, and sealed effect is better, can realize that swivel joint long service life, change frequency are low and be difficult to the technological effect who takes place the thorn hourglass under the operating mode of the big discharge capacity of high pressure, has solved the current situation that high pressure activity elbow relied on the import, has reduced the use cost of manifold device.

Drawings

Fig. 1 is a first schematic structural view of the rotary joint in embodiment 1.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural view of the second pipe member described in embodiment 1.

Fig. 4 is a schematic view of the structure of the gland described in embodiment 1.

Fig. 5 is a schematic view of the outer configuration of the rotary joint described in embodiment 1.

Fig. 6 is a schematic structural view of the rotary joint according to embodiment 1.

Fig. 7 is a schematic structural view three of the rotary joint described in embodiment 1.

Fig. 8 is a fourth schematic structural view of the rotary joint described in embodiment 1.

Fig. 9 is a schematic structural view five of the rotary joint described in embodiment 1.

Fig. 10 is a schematic view six of the structure of the rotary joint described in embodiment 1.

Fig. 11 is a schematic structural view of the manifold device according to the present invention.

Reference numerals: 1-first pipe fitting, 11-assembly hole, 12-grease injection channel, 13-observation hole, 14-groove, 2-second pipe fitting, 21-boss, 3-gland, 4-sealing filler, 5-grease injection lubricating piece, 51-spacer ring, 52-oil channel hole, 6-sealing piece, 7-dust-proof piece, 8-anti-loose block, 91-union joint, 92-flange joint, 10-rotary joint and 20-manifold device.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example 1

As shown in fig. 1-11, a swivel of a manifold device includes a first pipe fitting 1 and a second pipe fitting 2, the first pipe fitting 1 is provided with an assembly hole 11, the second pipe fitting 2 is in nested fit with the assembly hole 11, the second pipe fitting 2 is sleeved with a gland 3, the inner wall of the gland 3 is in clearance fit with the outer wall of the second pipe fitting 2, the gland 3 partially extends into the assembly hole 11 and is in threaded connection with the first pipe fitting 1, a sealing packing 4 and a grease-injecting lubrication member 5 are arranged between the outer wall of the second pipe fitting 2 and the assembly hole 11 at intervals, the sealing packing 4 is arranged on one side of the grease-injecting lubrication member 5 close to the bottom of the assembly hole 11, and the gland 3 abuts against the grease-injecting lubrication member 5.

The swivel joint of a manifold device of this embodiment is assembled by a first pipe fitting 1, a second pipe fitting 2, a gland 3, a sealing filler 4 and a grease-injecting lubricating piece 5, the first pipe fitting 1 and the second pipe fitting 2 can be selected as a straight pipe or a bent pipe according to actual conditions, so that an inlet and an outlet of a formed swivel joint 10 are on the same axis or have a certain included angle, one end of the first pipe fitting 1, which is far away from the second pipe fitting 2, is set as a conventional integral union joint 91 or a flange joint 92, or can be set as a conventional combined union joint 91 or a flange joint 92, and are connected through the corresponding union joint 91 or flange joint 92, so as to realize the connection of a plurality of swivel joints 10, so as to form the manifold device 20, when in use, the swivel joint 10 can be rotated by relatively rotating the first pipe fitting 1 and the second pipe fitting 2 around the axis direction of the swivel part, when the first pipe fitting 1 or the second pipe fitting 2 adopts a bent pipe structure, the rotation of the swivel 10 can change the direction of the inlet and outlet of the swivel 10 accordingly, so that the swivel 10 is more adaptive to the use environment of the manifold device 20.

Specifically, as shown in fig. 1, 5, and 9, in this embodiment, the first pipe fitting 1 is a bent pipe having an inlet and an outlet with an included angle of 90 °, the second pipe fitting 2 is a straight pipe, as shown in fig. 1, 5, and 6, one end of the first pipe fitting 1 away from the second pipe fitting 2 is provided with an integrally formed female union joint 91 with external threads, as shown in fig. 1, 5, 6, 7, and 8, one end of the second pipe fitting 2 away from the first pipe fitting 1 is provided with a male union joint 91, the male union joint 91 includes a spiral snap spring, a slip, and an airfoil nut, and is connected with the second pipe fitting 2 in a combination manner, when the two rotary joints 10 are used in combination, the connection is realized through the union joint 91 at the end, when the connection is realized through an end face gasket or an embedded sealing ring, and the union joints 91 with different structural forms can be selectively set according to actual situations; as shown in fig. 9 and 10, according to actual conditions, one end of the first pipe 1, which is far away from the end of the second pipe 2, is selected to be a flange joint 92, and the flange joint 92 is a pipe integrally formed part or a threaded connection flange plate including internal threads and a snap spring; as shown in fig. 6, 7, and 10, the first pipe 1 and the second pipe 2 may be selected to be both straight pipes, as shown in fig. 8, the first pipe 1 may be selected to be a bent pipe having an included angle between an inlet and an outlet, and the second pipe 2 may be selected to be a straight pipe, further, according to actual conditions, straight pipes or bent pipes with different lengths may be selected as the first pipe 1 or the second pipe 2, and the structure and size of the swivel joint 10 may be further changed, so that when a plurality of swivel joints 10 are combined, the manifold devices 20 with different line-type directions may be arranged, so that the manifold devices 20 are adapted to specific use environments, and regular pipeline directions are formed on the use site.

Specifically, in this embodiment, the assembly hole 11 is a stepped hole, the sealing filler 4 is disposed on an inner wall of the stepped hole near the bottom, the grease-filled lubrication member 5 and the sealing filler 4 are disposed on different stepped surfaces, and the gland 3 abuts against the stepped surfaces, so that the sealing filler 4 is blocked by the stepped surfaces, and the stability of the sealing portion is improved, and the sealing filler 4 is disposed on different stepped surfaces from the grease-filled lubrication member 5 and does not interfere with each other, so that the sealing filler 4 serves as a main sealing member between the mating surfaces of the first pipe 1 and the second pipe 2, and the grease-filled lubrication member 5 is matched to lubricate the rotating portion, so that the first pipe 1 and the second pipe 2 rotate smoothly relative to each other, and the effects of long service life, reduced replacement frequency, and reduced overall cost under a high-pressure or ultrahigh-pressure large-displacement working condition can be satisfied, for example, the effects of long service life and realization under a high-pressure large-displacement working condition of 140MPa can be completely satisfied, The technical effects of low replacement frequency and low possibility of puncture are achieved, the current situation that the high-pressure movable elbow depends on an inlet is solved, and the use cost of the manifold device 20 is reduced.

Specifically, in this embodiment, the outer surface of the second pipe 2 is provided with a step surface for limiting the movement of the sealing filler 4, and the step surface arranged on the inner surface of the first pipe 1 are combined to form an installation chamber adapted to the shape of the sealing filler 4, so that the sealing filler 4 is centered by the installation chamber, and the stability of the sealing filler 4 in the installation process and the use process is ensured.

Specifically, grease lubrication piece 5 establishes spacer ring 51 on second pipe fitting 2 including the cover in this embodiment, spacer ring 51 ring is arranged to set up a plurality of radial oil duct holes 52, first pipe fitting 1 sets up radial grease injection passageway 12, and set up the oil nipple and be connected with grease injection passageway 12, grease injection passageway 12 communicates to spacer ring 51 surface, the outside surface that makes the injected lubricant not only can lubricate spacer ring 51, can also lubricate spacer ring 51's inboard surface, lubricate second pipe fitting 2's surface, lubricated effect is better, it is more smooth and easy to make first pipe fitting 1 and second pipe fitting 2 rotate.

Specifically, gland 3 includes two linkage segments that external diameter size is different in this embodiment, one of them section sets up to the external screw thread, can stretch into between first pipe fitting 1 and the second pipe fitting 2, and the butt is on spacer ring 51, the other end sets up to the size and is greater than pilot hole 11, can the butt on the terminal surface of first pipe fitting 1, set up the sealing washer as dust keeper 7 on the surface of gland 3 with the laminating of second pipe fitting 2, not only block impurity such as outside dust and get into the clearance at sealed filler 4 place, also can block the emollient and flow out from the clearance, further prolong the life of this swivel.

Example 2

As shown in fig. 1 to 11, the structure of a rotating joint of a manifold device of the present embodiment is the same as that of embodiment 1, except that: on the basis of embodiment 1, the outer wall of the second pipe 2 is provided with a boss 21, the boss 21 is located between the sealing filler 4 and the grease-filled lubricating piece 5, the gland 3 abuts against the boss 21 through the grease-filled lubricating piece 5, a sealing member 6 is arranged between the sealing filler 4 and the grease-filled lubricating piece 5, and the sealing member 6 is arranged on the boss 21.

The rotary joint of the manifold device of the embodiment is characterized in that the boss 21 is arranged outside the second pipe fitting 2 in a surrounding mode, the boss 21 and the step surface provided with the sealing packing 4 are arranged at intervals, the grease-injected lubricating piece 5 is arranged on one side, far away from the sealing packing 4, of the boss 21, the spacer ring 51 is enabled to be stably abutted to the boss 21 through the gland 3, the surrounding sealing ring is arranged on the boss 21 and serves as the sealing piece 6, the secondary sealing of a gap is formed by matching the sealing packing 4, the lubricating agent is prevented from contacting the sealing packing 4, and the lubricating effect is guaranteed to be effective for a long time.

Example 3

As shown in fig. 1 to 11, the structure of a rotating joint of a manifold device of the present embodiment is the same as that of embodiment 2, except that: on the basis of embodiment 2, the first pipe element 1 is provided with at least one observation hole 13, the observation hole 13 penetrates through the pipe wall of the first pipe element 1, and the penetration point of the observation hole 13 on the inner surface of the first pipe element 1 is positioned between the sealing filler 4 and the grease-filling lubrication piece 5.

In the swivel joint of the manifold device of the embodiment, the observation hole 13 is arranged at a position below the median line of the first pipe fitting 1 which is horizontally placed, when the sealing filler 4 leaks, leaked liquid enters a gap where the sealing filler 4 is located, and is output from the observation hole 13 under the action of gravity and the pressure in the pipe fitting, so that the sealing effect of the swivel joint 10 can be visually checked from the outside of the swivel joint 10, and the normal use of the manifold device 20 consisting of the swivel joint 10 is ensured.

Example 4

As shown in fig. 1 to 11, the structure of a rotating joint of a manifold device of the present embodiment is the same as that of embodiment 3, except that: on the basis of embodiment 3, an anti-loosening block 8 is arranged between the gland 3 and the first pipe fitting 1 in an overlapping mode, the anti-loosening block 8 is in nested fit with the gland 3 and/or the first pipe fitting 1, and the anti-loosening block 8 is in screw connection with the gland 3 and/or the first pipe fitting 1.

The rotary joint of the manifold device of the embodiment realizes the relative fixation of the positions of the gland 3 and the first pipe fitting 1 through the anti-loosening block 8, so that the connecting thread between the gland 3 and the first pipe fitting 1 stably bears the axial force generated by the high-pressure liquid inside, and the structural stability of the rotary joint after the pressure bearing effect is ensured.

Specifically, in this embodiment, when the port excircle size of first pipe fitting 1 is greater than the port excircle size that gland 3 is located first pipe fitting 1 outside, set up the recess 14 with the adaptation of anti-loose piece 8 on the surface of first pipe fitting 1 outside, anti-loose piece 8 is partial to be embedded in the recess 14, anti-loose piece 8 extends to the partial overlap joint outside first pipe fitting 1 on gland 3, through screw and 3 screwed connection of gland, or, set up the spacing groove 31 with the adaptation of anti-loose piece 8 on the surface of gland 3 outside simultaneously, spacing groove 31 and recess 14 adaptation intercommunication set up the screw hole in spacing groove 31 and/or recess 14, make anti-loose piece 8 pass through the fix with screw.

Specifically, in this embodiment, when the port excircle size of first pipe fitting 1 is less than the port excircle size that gland 3 is located first pipe fitting 1 outside, set up the spacing groove 31 with the adaptation of anti-loosening block 8 on the surface of gland 3 outside, anti-loosening block 8 partial embedding is in the spacing groove 31, anti-loosening block 8 extends to the partial overlap joint outside gland 3 on first pipe fitting 1, through screw and first pipe fitting 1 screw connection, or, set up the recess 14 with anti-loosening block 8 adaptation on the surface of first pipe fitting 1 outside simultaneously, spacing groove 31 and recess 14 adaptation intercommunication set up the screw hole in spacing groove 31 and/or recess 14, make anti-loosening block 8 pass through the fix with screw.

Specifically, in this embodiment, when the port outer circle size of the first pipe fitting 1 is equal to the port outer circle size of the gland 3 located outside the first pipe fitting 1, the limiting groove 31 adapted to the anti-loosening block 8 is formed in the outer side surface of the gland 3, the groove 14 adapted to the anti-loosening block 8 is formed in the outer side surface of the first pipe fitting 1, the limiting groove 31 is communicated with the groove 14 in an adaptive manner, and the screw holes are formed in the limiting groove 31 and/or the groove 14, so that the anti-loosening block 8 is fixed by screws.

Specifically, in this embodiment, the anti-loosening block 8 is a metal block structural member.

Specifically, the anti-loosening block 8 is a plurality of blocks in the present embodiment, and the plurality of anti-loosening blocks 8 are axially arranged around the gland 3.

Specifically, in the present embodiment, the number of the limiting grooves 31 is plural, and the number of the grooves 14 is one or more, which is adapted to the number of the limiting grooves 31.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a swivel of manifold device, a serial communication port, includes first pipe fitting (1) and second pipe fitting (2), first pipe fitting (1) is provided with pilot hole (11), second pipe fitting (2) with pilot hole (11) nested cooperation, second pipe fitting (2) cover are equipped with gland (3), gland (3) part stretches into in pilot hole (11), gland (3) stretch into part in pilot hole (11) with first pipe fitting (1) threaded connection, second pipe fitting (2) outer wall with be provided with seal assembly between pilot hole (11), gland (3) butt is in seal assembly is last.

2. A swivel joint of a manifold device according to claim 1, wherein the sealing assembly comprises a sealing packing (4) and a grease-filled lubricant (5) which are arranged at intervals, the sealing packing (4) is arranged on one side of the grease-filled lubricant (5) close to the bottom of the fitting hole (11), and the gland (3) abuts on the grease-filled lubricant (5).

3. A swivel joint of a manifold device according to claim 2, characterized in that a seal (6) is arranged between the sealing packing (4) and the greasing lubricator (5).

4. A swivel joint of a manifold device according to claim 3, characterized in that the outer wall of the second tube member (2) is provided with a boss (21), the boss (21) is located between the sealing packing (4) and the grease-impregnated lubricant (5), the gland (3) abuts against the boss (21) through the grease-impregnated lubricant (5), and the seal (6) is provided on the boss (21).

5. A swivel joint of a manifold device according to claim 2, wherein the grease-filled lubrication (5) comprises a spacer ring (51) fitted over the second pipe (2), the first pipe (1) being provided with a grease-filled channel (12), the grease-filled channel (12) communicating with the surface of the spacer ring (51).

6. A swivel joint of a manifold device according to claim 5, wherein the spacer ring (51) is arranged with a plurality of oil duct holes (52), the oil duct holes (52) extending through the spacer ring (51).

7. A swivel of a manifold device according to claim 2, characterized in that the first pipe member (1) is provided with at least one sight opening (13), which sight opening (13) extends through the wall of the first pipe member (1), which sight opening (13) is located between the sealing packing (4) and the grease-impregnated lubricator (5) at the point of penetration of the inner surface of the first pipe member (1).

8. A swivel joint of a manifold device according to claim 1, characterized in that a dust-proof member (7) is arranged between the inner wall of the gland (3) and the outer wall of the second pipe member (2).

9. The swivel joint of a manifold device according to claim 1, wherein an anti-loosening block (8) is arranged between the gland (3) and the first pipe fitting (1) in an overlapping manner, the anti-loosening block (8) is in nested fit with the gland (3) and/or the first pipe fitting (1), and the anti-loosening block (8) is in screw connection with the gland (3) and/or the first pipe fitting (1).

10. A swivel joint of a manifold device according to any one of claims 1-9, wherein the first pipe member (1) and the second pipe member (2) are straight pipes or bent pipes, and the ends of the first pipe member (1) and the second pipe member (2) away from each other are provided as a union joint (91) or a flange joint (92), and the union joint (91) or the flange joint (92) is an integral piece of pipe member or a combination of pipe members.