An integral vulcanized acid fracturing hose joint assembly and its preparation method

Abstract

The present application relates to an integral vulcanized acid fracturing hose connector assembly and a preparation method thereof, the hose connector assembly comprising: a connector and a hose; wherein the connector comprises an external connector, an external protective sleeve, a wire rope fixing platform and a wire rope fixing pressure block, and the hose comprises a wire rope winding layer; wherein the wire rope in the wire rope winding layer is fixed on the wire rope fixing platform, the wire rope fixing pressure block is arranged above the wire rope fixing platform, and the wire rope fixing pressure block is fixedly connected to the wire rope fixing platform, and the contact surface between the wire rope fixing pressure block and the wire rope fixing platform is a complementary special-shaped contact surface; the external connector is threadedly connected to the front end of the wire rope fixing platform, the external protective sleeve is arranged above the external connector and the wire rope fixing pressure block, the external protective sleeve is threadedly connected to the external connector, and the contact surface between the external protective sleeve and the wire rope fixing pressure block is an inclined surface with the same slope; compared with the prior art, the technical solution of the present application can improve the connection stability of the hose connector.

Description

Technical Field

[0001] The present application relates to the technical field of hoses and hose connections, and in particular to an integrally vulcanized acid fracturing hose connector assembly and a preparation method thereof. Background Art

[0002] In fracturing operations in the oil and gas extraction field, fracturing hoses, as key fluid transmission components connecting fracturing trucks, diverter skids and wellheads, need to withstand extremely high working pressures, usually requiring up to 15,000 PSI or 20,000 PSI.

[0003] Since the fracturing pump generates high-frequency vibrations during operation, the joint between the hose and the fracturing truck will also vibrate continuously. Currently, the industry generally adopts the integral vulcanized joint connection method, that is, the steel wire rope arranged in the joint groove is tightened and fixed by screws to achieve the connection between the hose and the joint.

[0004] However, existing connection structures have significant drawbacks in practical applications. For example, under long-term vibration loads, the fixing screws are prone to loosening, resulting in a decrease in the anchoring force of the wire rope on the pipe body, which in turn leads to the risk of the joint and pipe being pulled out, seriously restricting the reliability and efficiency of fracturing operations. Therefore, how to maintain the stability of the joint connection under high pressure and vibration conditions is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The present application provides an integral vulcanized acid fracturing hose connector assembly and a preparation method thereof, which can improve the connection stability of the hose connector.

[0006] In the first aspect, the present application provides an integral vulcanized acid fracturing hose connector assembly, comprising: a connector and a hose; wherein the connector comprises an external connector, an external protective sleeve, a wire rope fixing platform and a wire rope fixing pressure block, and the hose comprises a wire rope winding layer; wherein the wire rope in the wire rope winding layer is fixed to the wire rope fixing platform, the wire rope fixing pressure block is arranged above the wire rope fixing platform, and the wire rope fixing pressure block is fixedly connected to the wire rope fixing platform, and the contact surface between the wire rope fixing pressure block and the wire rope fixing platform is a complementary special-shaped contact surface; the external connector is threadedly connected to the front end of the wire rope fixing platform, the outer protective sleeve is arranged above the external connector and the wire rope fixing pressure block, the outer protective sleeve is threadedly connected to the external connector, and the contact surface between the outer protective sleeve and the wire rope fixing pressure block is an inclined surface with the same slope.

[0007] In a possible implementation, the hose further includes a wear-resistant layer, an inner rubber layer, an inner fabric layer, an outer fabric layer and an outer rubber layer; wherein the wear-resistant layer, the inner rubber layer, the inner fabric layer, the wire rope winding layer, the outer fabric layer and the outer rubber layer are sequentially arranged on the hose from the inside to the outside.

[0008] In a possible implementation, the joint further includes: a rear tail protective cover; wherein the rear tail protective cover is arranged below the outer protective cover and is threadedly connected to the tail end of the outer protective cover; the rear tail protective cover is arranged above the outer fabric layer.

[0009] In one possible implementation, the external connector is provided with a first thread and a second thread, the wire rope fixing platform is provided with a third thread, the outer protective sleeve is provided with a fourth thread and a fifth thread, and the rear protective sleeve is provided with a sixth thread; wherein the first thread of the external connector is connected to the third thread of the wire rope fixing platform, the second thread of the external connector is connected to the fourth thread of the outer protective sleeve, and the fifth thread of the outer protective sleeve is connected to the sixth thread of the rear protective sleeve.

[0010] In a possible implementation, the special-shaped contact surface includes a wavy surface, wherein the difference in amplitude between a crest and a trough of the wavy surface is 4 mm to 8 mm, and the crest spacing is 40 mm to 60 mm.

[0011] In a possible implementation, the external connector is provided with a glue injection hole and a connector inner cavity, wherein a first end of the glue injection hole is connected to the outside, and a second end of the glue injection hole is connected to the connector inner cavity.

[0012] In a possible implementation, the wire rope fixing platform is provided with a wire rope fixing groove and a wire rope fixing bolt; wherein, the wire rope fixing grooves are evenly arranged on the outer circumferential surface of the wire rope fixing platform at a preset interval, and the interval between the wire rope fixing grooves forms a first groove, and the wire rope is fixed at the bottom of the first groove; the wire rope fixing pressure block is fixed above the wire rope, and the wire rope is provided with a wire rope fixing bolt hole, and the wire rope fixing bolt passes through the wire rope fixing bolt hole and contacts the wire rope.

[0013] In a second aspect, the present application provides a method for preparing an integral vulcanized acid fracturing hose connector assembly as described in any one of the above items, comprising: sequentially fitting a rear protective sleeve and an outer protective sleeve onto a hose, wherein the hose is a hose with an outer fabric layer wrapped around it; stripping the hose to install a wire rope fixing platform on the exposed inner fabric layer, and sequentially fixing the wire rope winding layers that have been stripped layer by layer into the wire rope positioning grooves of the wire rope fixing platform; fixing the wire rope fixing block onto the wire rope fixing platform using a wire rope fixing bolt; and attaching the outer connecting member to the hose. The head is put on the hose and is threadedly connected to the wire rope fixing platform and the outer protective sleeve so that the inclined surface of the wire rope fixing block and the inner inclined surface of the outer protective sleeve are tightly pressed together; the rear protective sleeve and the outer protective sleeve are threadedly connected, and the joint is injected with glue through the glue injection hole in the outer connector to complete the connection between the hose and the joint; the hose with the completed joint connection is wrapped with an outer rubber layer, and after the winding is completed, the obtained hose joint assembly is vulcanized as a whole to obtain an integral vulcanized acid fracturing hose joint assembly.

[0014] In a possible implementation, the joint is injected with glue through the glue injection hole in the external connector, specifically comprising: a joint inner cavity is provided on the external connector, and thermosetting adhesive is injected into the joint inner cavity through the glue injection hole in the external connector.

[0015] In a possible implementation, when performing the outer rubber layer wrapping process on the hose that has completed the joint connection, the method further includes: performing the outer rubber layer wrapping process on the joint connected to the hose.

[0016] The present application provides an integral vulcanized acid fracturing hose connector assembly and a method for preparing the same, which has the following advantages over the prior art:

[0017] The integral vulcanized acid fracturing hose connector assembly comprises: a connector and a hose; wherein the connector comprises an external connector, an external protective sleeve, a wire rope fixing platform and a wire rope fixing pressure block, and the hose comprises a wire rope winding layer; wherein the wire rope in the wire rope winding layer is fixed to the wire rope fixing platform, the wire rope fixing pressure block is arranged above the wire rope fixing platform, and the wire rope fixing pressure block is fixedly connected to the wire rope fixing platform, and the contact surface between the wire rope fixing pressure block and the wire rope fixing platform is a complementary special-shaped contact surface; the external connector is threadedly connected to the front end of the wire rope fixing platform, the external protective sleeve is arranged above the external connector and the wire rope fixing pressure block, and the external protective sleeve is threadedly connected to the external connector, The contact surface between the outer protective sleeve and the wire rope fixing pressure block is an inclined surface with the same slope; compared with the existing technology, the technical solution of the present application designs the contact surface between the wire rope fixing pressure block and the wire rope fixing platform as a complementary special-shaped contact surface, and combines the inclined surfaces with the same slope of the outer protective sleeve and the pressure block, and utilizes the self-locking effect of the inclined surface under pressure to increase the clamping force on the wire rope; at the same time, the outer protective sleeve and the external connecting head are connected by threads to form an integral force-bearing structure, which further suppresses loosening caused by vibration. Compared with the existing screw fixing method, this design significantly improves the friction coefficient and clamping area of ​​the wire rope, and can adaptively enhance the clamping force under high-pressure working conditions, effectively reducing the risk of joint pull-out; thereby greatly improving the reliability and service life of the hose connector in high-frequency vibration and high-pressure acid fracturing environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0021] Figure 1 This is a structural schematic diagram of an embodiment of an integral vulcanized acid fracturing hose connector assembly provided by the present application;

[0022] Figure 2This is a schematic diagram of the cross-sectional structure of an integral vulcanized acid fracturing hose connector assembly according to an embodiment of the present application;

[0023] Figure 3a This is a schematic structural diagram of a wire rope fixing platform according to an embodiment of the present application;

[0024] Figure 3b This is a partially enlarged structural diagram of a wire rope fixing platform according to an embodiment of the present application;

[0025] Figure 4 This is a schematic diagram of the connection between a wire rope fixing platform and a wire rope fixing pressing block according to an embodiment of the present application;

[0026] Figure 5 This is a schematic structural diagram of a steel wire rope fixing pressing block according to an embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the installation of a wire rope fixing bolt according to an embodiment of the present application;

[0028] Figure 7 This is a schematic structural diagram of an external connector according to an embodiment of the present application;

[0029] Figure 8 This is a schematic structural diagram of an outer protective cover according to an embodiment of the present application;

[0030] Figure 9 This is a schematic structural diagram of a rear tail protection cover according to an embodiment of the present application;

[0031] Figure 10 This is a flow chart of an embodiment of a method for preparing an integral vulcanized acid fracturing hose connector assembly provided by the present application;

[0032] Reference numerals:

[0033] 1-connector, 2-hose, 11-external connector, 12-wire rope fixing platform, 13-outer protective cover, 14-rear tail protective cover, 21-wear-resistant layer, 22-inner rubber layer, 23-inner fabric layer, 24-wire rope winding layer, 25-outer fabric layer, 26-outer rubber layer, 111-front end of external connector, 112-sealing chamber, 113-first thread, 114-glue injection hole, 115-second thread, 121-third thread, 122-wire rope fixing groove, 123-wire rope fixing pressure block, 124-wire rope fixing bolt, 1231-pressure block corrugated surface, 1232-pressure block inclined surface, 131-fourth thread, 132-inner inclined surface of outer protective cover, 133-fifth thread, 141-sixth thread, 142-rear reducing area. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0036] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0037] It should also be understood that the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0038] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0039] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0040] Example 1, see Figure 1 , Figure 1 This is a structural diagram of an embodiment of an integral vulcanized acid fracturing hose connector assembly provided by the present application, such as Figure 1 As shown, the integral vulcanized acid fracturing hose connector assembly includes a connector 1 and a hose 2, as follows:

[0041] In one embodiment, the connector 1 is fixed to both ends of the hose 2 , and the connector 1 is sealedly connected to the hose 2 .

[0042] Specifically, the joint 1 includes but is not limited to a flange joint, a union joint or other structural joints.

[0043] like Figure 2 As shown, Figure 2 This is a schematic diagram of the cross-sectional structure of an integral vulcanized acid fracturing hose connector assembly according to an embodiment of the present application.

[0044] In one embodiment, the hose 2 includes a wire rope winding layer 24 .

[0045] In one embodiment, the hose 2 further includes a wear-resistant layer 21, an inner rubber layer 22, an inner fabric layer 23, an outer fabric layer 25 and an outer rubber layer 26; wherein the wear-resistant layer 21, the inner rubber layer 22, the inner fabric layer 23, the wire rope winding layer 24, the outer fabric layer 25 and the outer rubber layer 26 are arranged on the hose 2 in sequence from the inside to the outside.

[0046] Specifically, the inner rubber layer 22 is located on the outside of the wear-resistant layer 21, the inner fabric layer 23 is wrapped around the outside of the inner rubber layer 22, the wire rope winding layer 24 is wrapped around the outside of the inner fabric layer 23, the outer fabric layer 25 is wrapped around the outside of the wire rope winding layer 24, and the outer rubber layer 26 is located on the outside of the outer fabric layer 25.

[0047] In one embodiment, the joint 1 includes an outer connector 11 , an outer protective cover 13 , a wire rope fixing platform 12 and a wire rope fixing pressing block 123 .

[0048] In one embodiment, the steel wire ropes in the steel wire rope winding layer 24 are fixed on the steel wire rope fixing platform 12 .

[0049] Specifically, the wire rope fixing platform 12 is provided with a wire rope fixing groove 122, wherein the wire rope fixing groove 122 is evenly arranged on the outer circumferential surface of the wire rope fixing platform 12 at a preset interval, and the interval between the wire rope fixing groove 122 and the wire rope fixing groove 122 forms a first groove; Figure 3a As shown, Figure 3a 1 is a schematic structural diagram of a wire rope fixing platform according to an embodiment of the present application; the structure between the wire rope fixing groove 122 and the wire rope fixing groove 122 in the wire rope fixing platform 12 is magnified, as shown in FIG. Figure 3b As shown, Figure 3bIt is a partially enlarged structural schematic diagram of a wire rope fixing platform according to an embodiment of the present application.

[0050] Specifically, when the steel wire ropes in the steel wire rope winding layer 24 are fixed on the steel wire rope fixing platform 12 , the steel wire ropes are fixed at the bottom of the first groove.

[0051] Preferably, when the steel wire rope is fixed at the bottom of the first groove, the end of the steel wire rope is also fixed with a wire tie to keep the steel wire rope in a straight and stressed state; the steel wire rope is fixed at the bottom of these first grooves. This design not only ensures that the steel wire rope is firmly fixed, but also improves the tensile strength of the steel wire rope.

[0052] Specifically, the steel wire ropes in the steel wire rope winding layer 24 are obtained by fixing the steel wire rope winding layer 24 at 500 mm from the hose end with a tie wire, then peeling off the steel wire rope winding layer 24 at the hose end layer by layer, and fixing each layer of the steel wire rope winding layer 24 into a bundle.

[0053] Specifically, since the wire rope winding layer 24 is peeled off layer by layer, the inner fabric layer 23 located below the wire rope winding layer 24 is exposed; the wire rope fixing platform 12 is installed on the exposed inner fabric layer 23, ensuring that the wear-resistant layer 21, inner rubber layer 22, and inner fabric layer 23 of the hose completely pass through the wire rope fixing platform 12, and keep the end exposed 20mm, and the wire rope fixing platform 12 and the inner fabric layer 23 are in close contact.

[0054] In one embodiment, the steel wire rope fixing pressure block 123 is disposed above the steel wire rope fixing platform 12, and the steel wire rope fixing pressure block 123 is fixedly connected to the steel wire rope fixing platform 12; Figure 4 As shown, Figure 4 This is a schematic diagram of the connection between a wire rope fixing platform and a wire rope fixing pressure block according to an embodiment of the present application.

[0055] Specifically, the wire rope fixing platform 12 is provided with a wire rope fixing bolt 124, the wire rope fixing pressure block 123 is fixed above the wire rope, and the wire rope fixing pressure block 123 is provided with a wire rope fixing bolt hole, and the wire rope fixing bolt 124 passes through the wire rope fixing bolt hole and contacts the wire rope, so that the wire rope fixing pressure block 123 is connected to the wire rope fixing platform 12 to compress the wire rope between the two.

[0056] In one embodiment, the contact surface between the wire rope fixing pressing block 123 and the wire rope fixing platform 12 is a complementary special-shaped contact surface.

[0057] Specifically, the special-shaped contact surface is a wavy surface, such as Figure 5 As shown, Figure 51 is a schematic structural diagram of a steel wire rope fixing pressure block according to an embodiment of the present application. The inner side surface of the steel wire rope fixing pressure block 123 is a pressure block corrugated surface 1231 .

[0058] Specifically, the amplitude difference between the crest and trough of the wavy surface is 4mm to 8mm, and the crest spacing is 40mm to 60mm; the rectangular grooves opened on the wavy surface have a groove depth of 1mm, a groove width of 1mm, and an interval distance of 1mm.

[0059] Preferably, the wavy surface is preferably a trapezoidal surface, and other types of wavy surfaces can also be used. It should be ensured that the crests and troughs of the special-shaped contact surface between the wire rope fixing block 123 and the wire rope fixing platform 12 are staggered and tightly pressed.

[0060] Specifically, this design increases the contact area and friction between the wire rope and the wire rope fixing platform 12, so that the wire rope can be more firmly fixed on the wire rope fixing platform 12 when subjected to tension; In addition, the wire rope fixing pressure block 123 is provided with a wire rope fixing bolt hole, and the wire rope fixing bolt 124 passes through the wire rope fixing bolt hole and contacts the wire rope, further fixing the wire rope, such as Figure 6 As shown, Figure 6 This is a schematic diagram of the installation of a wire rope fixing bolt according to an embodiment of the present application.

[0061] In one embodiment, the external connector 11 is threadedly connected to the front end of the wire rope fixing platform 12, the outer protective sleeve 13 is arranged above the external connector 11 and the wire rope fixing pressure block 123, the outer protective sleeve 13 is threadedly connected to the external connector 11, and the contact surface between the outer protective sleeve 13 and the wire rope fixing pressure block 123 is an inclined surface with the same slope.

[0062] In one embodiment, the external connector 11 is the front end portion of the connector, and is used to connect to an external device; wherein the external device includes but is not limited to a fracturing truck or a diverter skid.

[0063] like Figure 7 As shown, Figure 7 Schematic diagram of the structure of an external connector according to an embodiment of the present application; Figure 8 As shown, Figure 8 This is a schematic structural diagram of an outer protective cover according to an embodiment of the present application.

[0064] In one embodiment, the outer connector 11 is provided with a first thread 113 and a second thread 115 , the wire rope fixing platform 12 is provided with a third thread 121 , and the outer protective sleeve 13 is provided with a fourth thread 131 .

[0065] Specifically, the first thread 113 is arranged on the inner side surface of the external connector, and the third thread 121 is arranged on the outer side surface of the front end of the wire rope fixing platform 12; the second thread 115 is arranged on the outer side surface of the external connector 11, and the fourth thread 131 is arranged on the inner side surface of the front end of the outer protective cover 13.

[0066] Specifically, after the external connector 11 is put onto the hose 2 , the external connector 11 is located above the front end of the wire rope fixing platform 12 , and the external connector 11 is connected to the third thread 121 of the wire rope fixing platform 12 through the first thread 113 .

[0067] Preferably, a sealing cavity 112 and a front end 111 of the external connector are also provided on the external connector 11. When the external connector 11 is threadedly connected to the wire rope fixing platform 12, the inner rubber layer 22 of the hose 2 fills the sealing cavity 112 of the front end 111 of the external connector to form a seal to prevent liquid leakage.

[0068] Specifically, the outer protective sleeve 13 is arranged above the outer connector 11 , the wire rope fixing platform 12 and the wire rope fixing pressure block 123 , and the outer connector 11 is connected to the fourth thread 131 of the outer protective sleeve 13 through the second thread 115 .

[0069] Specifically, during the threaded connection process, the inner inclined surface of the outer protective sleeve 13 is tightly pressed against the inclined surface of the wire rope fixing pressure block 123, which can achieve a firm connection between the external connector 11, the wire rope fixing platform 12 and the outer protective sleeve 13, and through the pressing of the inclined surfaces, a certain pressure is applied to the wire rope fixing pressure block 123, further enhancing the stability and sealing of the joint 1.

[0070] Specifically, the outer side surface of the wire rope fixing pressure block 123 is a pressure block inclined surface 1232 , wherein the inner inclined surface of the outer protective cover 13 and the pressure block inclined surface 1232 of the wire rope fixing pressure block 123 are inclined surfaces with the same slope.

[0071] In one embodiment, the external connector 11 is provided with a glue injection hole 114 and a connector inner cavity, wherein a first end of the glue injection hole 114 is connected to the outside, and a second end of the glue injection hole 114 is connected to the connector inner cavity.

[0072] Specifically, by injecting thermosetting adhesive into the inner cavity of the joint through the glue injection hole 114, the various components of the joint 1 can be firmly bonded together to prevent loosening or leakage during use; this design not only enhances the stability of the joint, but also improves the sealing performance of the joint.

[0073] Preferably, the thermosetting adhesive includes but is not limited to phenolic resin.

[0074] In one embodiment, the connector 1 further includes: a rear tail protective cover 14; wherein, the rear tail protective cover 14 is arranged below the outer protective cover 13, and the rear tail protective cover 14 is threadedly connected to the tail end of the outer protective cover 13; the rear tail protective cover 14 is arranged above the outer fabric layer 25.

[0075] Specifically, the outer protective sleeve 13 is further provided with a fifth thread 133 and an outer protective sleeve inner bevel 132; wherein, the outer protective sleeve inner bevel 132 is located between the fifth thread 133 and the fourth thread 131; the first end of the outer protective sleeve inner bevel 132 is connected to the fourth thread 131, and the second end of the outer protective sleeve inner bevel 132 is connected to the fifth thread 133.

[0076] Specifically, the rear tail protection cover 14 is provided with a sixth thread 141 and a rear diameter reducing area 142, wherein the rear diameter reducing area 142 is located at the rear end of the sixth thread 141; Figure 8 As shown, Figure 8 This is a schematic structural diagram of a rear tail protection cover according to an embodiment of the present application.

[0077] Specifically, the fifth thread 133 is arranged on the inner side of the rear end of the outer protective cover 13, and the sixth thread 141 is arranged on the outer side of the rear tail protective cover 14; the rear tail protective cover 14 is arranged below the rear end of the outer protective cover 13, and the outer protective cover 13 is connected to the sixth thread 141 of the rear tail protective cover 14 through the fifth thread 133; the stability and sealing of the joint 1 are further enhanced.

[0078] In summary, the embodiment of the present application provides an integral vulcanized acidizing fracturing hose connector assembly, which, through the design of the special-shaped contact surface between the wire rope fixing pressure block and the wire rope fixing platform and the self-locking function of the inclined surface of the pressure block when under pressure, enables the wire rope to be more firmly fixed to the wire rope fixing platform when subjected to tension. The greater the pressure, the better the fixing effect; this design greatly improves the anti-pullout performance of the hose connector, reduces the risk of the connector being pulled out under high-pressure working conditions, and improves the reliability and safety of the hose connector; and the connection of the connector adopts multiple sealing measures such as threaded connection and glue injection treatment, so that the various components of the connector can be firmly connected together to form a reliable sealing structure; injecting thermosetting adhesive into the inner cavity of the connector through the glue injection hole can further enhance the sealing performance of the connector, prevent liquid from leaking from the connector, and ensure the smooth progress of the fracturing operation.

[0079] Example 2, see Figure 2 , Figure 10This is a flow chart of an embodiment of a method for preparing an integral vulcanized acid fracturing hose connector assembly provided by the present application, as shown in FIG. Figure 10 As shown, the preparation method of the integral vulcanized acid fracturing hose connector assembly includes steps S1 to S6, as shown below:

[0080] Step S1: sequentially putting the rear protective cover and the outer protective cover onto the hose, wherein the hose is a hose with an outer fabric layer wrapped around it.

[0081] In one embodiment, during the preparation of an integral vulcanized acid fracturing hose connector assembly, the rear protective cover and the outer protective cover need to be sequentially mounted on the hose; wherein the hose is a hose on which the outer fabric layer has been wrapped, i.e., the hose is sequentially provided with the wear-resistant layer, the inner rubber layer, the inner fabric layer, the wire rope winding layer, and the outer fabric layer from the inside to the outside; the purpose of this step is to facilitate the installation of the various components of the connector on the hose during the subsequent installation process.

[0082] Step S2: stripping the hose to install a wire rope fixing platform on the exposed inner fabric layer, and fixing the stripped wire rope winding layers layer by layer in the wire rope positioning grooves of the wire rope fixing platform in sequence.

[0083] In one embodiment, when the hose is stripped, the wire rope winding layer of the hose at a preset distance from the hose end is first fixed with a tie wire, and then the wire rope winding layer at the hose end is peeled off layer by layer, and each layer of the wire rope winding layer is fixed into a bundle to reveal the inner fabric layer of the hose body.

[0084] Specifically, the preset distance is 500 mm.

[0085] Specifically, since the wire rope fixing platform is a hollow circular structure, the wire rope fixing platform can be installed on the exposed inner fabric layer by peeling the hose, and ensure that the wear-resistant layer, inner rubber layer and inner plant layer on the hose body can completely and smoothly pass through the center of the wire rope fixing platform, so that the wire rope fixing platform is tightly fitted with the inner fabric layer.

[0086] Preferably, when the wire rope fixing platform is installed on the exposed inner fabric layer, the distance between the wire rope fixing platform and the end of the hose is maintained at 20m, so as to achieve the effect of exposing the end of the hose by 20mm.

[0087] Specifically, when the wire rope winding layers that are peeled off layer by layer are fixed in the wire rope positioning groove of the wire rope fixing platform in turn, the end of the wire rope is also fixed with a wire tie to keep the wire rope in a straight and stressed state. This can ensure that the wire rope is fixed more firmly on the wire rope fixing platform, providing a basis for subsequent tightening and fixing.

[0088] Step S3: Using wire rope fixing bolts to fix the wire rope fixing block on the wire rope fixing platform.

[0089] In one embodiment, when the wire rope fixing pressure block is fixedly mounted on the wire rope fixing platform using the wire rope fixing bolts, the contact surfaces between the wire rope fixing pressure block and the wire rope fixing platform are complementary special-shaped contact surfaces.

[0090] Specifically, the special-shaped contact surface is a wavy surface; wherein, the amplitude difference between the crest and the trough of the wavy surface is 4mm to 8mm, the crest spacing of the crest is 40mm to 60mm, and the rectangular groove opened on the wavy surface has a depth of 1mm, a width of 1mm, and an interval distance of 1mm.

[0091] Preferably, the wavy surface includes but is not limited to a trapezoidal surface or other types of wavy surfaces to ensure that the steel wire rope fixing pressing block and the steel wire rope fixing platform are tightly pressed with wave crests and wave troughs staggered.

[0092] Specifically, this design can increase the contact area and friction between the steel wire rope and the fixing platform, thereby improving the fixing effect of the steel wire rope.

[0093] Step S4: Put the external connector onto the hose and threadably connect it to the wire rope fixing platform and the outer protective sleeve so that the pressing block inclined surface of the wire rope fixing pressing block and the inner inclined surface of the outer protective sleeve are tightly pressed together.

[0094] In one embodiment, the outer connecting head is provided with a first thread and a second thread, the wire rope fixing platform is provided with a third thread, and the outer protective sleeve is provided with a fourth thread.

[0095] Specifically, the first thread is arranged on the inner side of the external connector, and the third thread is arranged on the outer side of the front end of the wire rope fixing platform; the second thread is arranged on the outer side of the external connector, and the fourth thread is arranged on the inner side of the front end of the outer protective sleeve.

[0096] Specifically, after the external connector is put onto the hose, the external connector is located above the front end of the wire rope fixing platform, and the external connector is connected to the third thread of the wire rope fixing platform through the first thread.

[0097] Preferably, a sealing cavity is further provided on the external connector, and when the external connector is threadedly connected to the wire rope fixing platform, the inner rubber layer is kept filling the sealing cavity.

[0098] Specifically, the outer protective sleeve is arranged above the outer connecting head, the wire rope fixing platform and the wire rope fixing pressure block, and the outer connecting head is connected to the fourth thread of the outer protective sleeve through the second thread; during the threaded connection process, the inner inclined surface of the outer protective sleeve is tightly pressed against the inclined surface of the pressure block of the wire rope fixing pressure block; the purpose of this step is to achieve a firm connection between the outer connecting head, the wire rope fixing platform and the outer protective sleeve, and through the pressing of the inclined surfaces, the stability and sealing of the joint are further enhanced.

[0099] Specifically, the inner inclined surface of the outer protective sleeve and the inclined surface of the steel wire rope fixing pressing block have the same slope.

[0100] Step S5: threading the rear protective cover and the outer protective cover together, injecting glue into the joint through the glue injection hole in the outer connector to complete the connection between the hose and the joint.

[0101] In one embodiment, the outer protective cover is further provided with a fifth thread; and the rear protective cover is provided with a sixth thread.

[0102] Specifically, the fifth thread is arranged on the inner side of the rear end of the outer protective sleeve, and the sixth thread is arranged on the outer side of the rear tail protective sleeve; the rear tail protective sleeve is arranged below the rear end of the outer protective sleeve, and the outer protective sleeve is connected to the sixth thread of the rear tail protective sleeve through the fifth thread; the stability and sealing of the joint are further enhanced.

[0103] In one embodiment, the joint is injected with glue through the glue injection hole in the external connector, specifically comprising: a joint inner cavity is provided on the external connector, and thermosetting adhesive is injected into the joint inner cavity through the glue injection hole in the external connector.

[0104] Specifically, the thermosetting adhesive includes but is not limited to phenolic resin.

[0105] Specifically, a joint inner cavity is provided on the external connecting joint, the first end of the glue injection hole is connected to the outside, and the second end is connected to the joint inner cavity; the injected thermosetting adhesive can be cured in the joint inner cavity, thereby firmly bonding the various components of the joint together to prevent loosening or leakage during use.

[0106] Step S6: performing an outer rubber layer winding process on the hose with the completed joint connection, and after the winding is completed, performing an overall vulcanization process on the obtained hose joint assembly to obtain an overall vulcanized acid fracturing hose joint assembly.

[0107] In one embodiment, when wrapping the hose with an outer rubber layer after the joint connection is completed, the method further includes: wrapping the joint connected to the hose with an outer rubber layer.

[0108] Specifically, a rear diameter reducing area is provided at the rear end of the rear tail protection cover.

[0109] Specifically, when the outer rubber layer is wrapped on the joint, the wrapping range includes the front end of the outer connector to the rear diameter-reducing area of ​​the rear protective cover.

[0110] In one embodiment, after winding, the resulting hose connector assembly is subjected to an integral vulcanization process. This integral vulcanization process combines the hose and connector, forming a single unit. This eliminates the gaps and weak links found in traditional connectors, improving the stability and reliability of the hose connector. The integral vulcanization process also ensures a tight seal between the hose and connector, preventing leakage caused by improper connection and extending the service life and performance of the hose connector.

[0111] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0112] Obviously, those skilled in the art may make various modifications and variations to this application without departing from the spirit and scope of this application. Thus, as long as these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

[0113] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An integral vulcanized acid fracturing hose connector assembly, characterized in that: include: connectors and hoses; The joint comprises an outer connector, an outer protective sleeve, a wire rope fixing platform and a wire rope fixing pressing block, and the hose comprises a wire rope winding layer and an outer fabric layer; The steel wire ropes in the steel wire rope winding layer are fixed on the steel wire rope fixing platform, the steel wire rope fixing pressure block is arranged above the steel wire rope fixing platform, and the steel wire rope fixing pressure block is fixedly connected to the steel wire rope fixing platform, and the contact surface between the steel wire rope fixing pressure block and the steel wire rope fixing platform is a complementary special-shaped contact surface; The wire rope fixing platform is provided with a wire rope fixing groove and a wire rope fixing bolt; The wire rope fixing grooves are evenly arranged on the outer circumferential surface of the wire rope fixing platform at preset intervals, and the intervals between the wire rope fixing grooves form a first groove, and the wire ropes in the wire rope winding layers peeled off layer by layer are sequentially fixed to the bottom of the first groove of the wire rope fixing platform; The steel wire rope fixing pressure block is fixed above the steel wire rope, and the steel wire rope fixing pressure block is provided with a steel wire rope fixing bolt hole, and the steel wire rope fixing bolt passes through the steel wire rope fixing bolt hole and contacts the steel wire rope; The outer connector is threadedly connected to the front end of the wire rope fixing platform, the outer protective sleeve is arranged above the outer connector and the wire rope fixing pressure block, the outer protective sleeve is threadedly connected to the outer connector, and the contact surface of the outer protective sleeve and the wire rope fixing pressure block is an inclined surface with the same slope; The joint further comprises: a rear tail protective cover, wherein the rear tail protective cover is arranged below the outer protective cover and is threadedly connected to the tail end of the outer protective cover; the rear tail protective cover is arranged above the outer fabric layer.

2. The integral vulcanized acid fracturing hose connector assembly according to claim 1, characterized in that: The hose also includes a wear-resistant layer, an inner rubber layer, an inner fabric layer and an outer rubber layer; The wear-resistant layer, the inner rubber layer, the inner fabric layer, the wire rope winding layer, the outer fabric layer and the outer rubber layer are sequentially arranged on the hose from the inside to the outside.

3. The integral vulcanized acid fracturing hose connector assembly according to claim 1, characterized in that: The special-shaped contact surface includes a wavy surface, wherein the difference in amplitude between the crest and the trough of the wavy surface is 4 mm to 8 mm, and the crest spacing of the crests is 40 mm to 60 mm.

4. The integral vulcanized acid fracturing hose connector assembly according to claim 1, characterized in that: The external connector is provided with a glue injection hole and a connector inner cavity, wherein a first end of the glue injection hole is connected to the outside, and a second end of the glue injection hole is connected to the connector inner cavity.

5. A method for preparing the integral vulcanized acid fracturing hose joint assembly according to any one of claims 1 to 4, characterized in that: include: Putting the rear protective cover and the outer protective cover onto the hose in sequence, wherein the hose is the hose with the outer fabric layer wrapped around it; The hose is stripped to install a wire rope fixing platform on the exposed inner fabric layer, and the stripped wire rope winding layers are fixed in sequence in the bottom of the first groove of the wire rope fixing platform; The wire rope fixing bolt passes through the wire rope fixing bolt hole and contacts the wire rope to further fix the wire rope; Put the external connector onto the hose and thread it to the wire rope fixing platform and the outer protective sleeve so that the inclined surface of the wire rope fixing block and the inner inclined surface of the outer protective sleeve are tightly pressed together; The rear protective cover and the outer protective cover are threadedly connected, and the joint is injected with glue through the glue injection hole in the outer connector to complete the connection between the hose and the joint; The hose with the completed joint connection is subjected to an outer rubber layer winding treatment, and after the winding is completed, the obtained hose joint assembly is subjected to an overall vulcanization treatment to obtain an overall vulcanized acid fracturing hose joint assembly.

6. The method for preparing the integral vulcanized acid fracturing hose joint assembly according to claim 5, characterized in that: The glue injection process is performed on the joint through the glue injection hole in the external connector, specifically comprising: The outer connector is provided with a connector inner cavity, and thermosetting adhesive is injected into the connector inner cavity through an injection hole in the outer connector.

7. The method for preparing the integral vulcanized acid fracturing hose joint assembly according to claim 5, characterized in that: When the hose with the joint connected is wrapped with an outer rubber layer, the method further includes: The joint connected to the hose is wrapped with an outer rubber layer.

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