End socket pump plate structure and pressure test device

Abstract

The utility model relates to the field of valve pressure test, and discloses an end socket pump plate structure and a pressure test device. The end socket pump plate structure comprises an end socket body, and the end socket body is provided with a welding end face and an insertion part. A first channel and a second channel which are arranged in a spaced mode are constructed on the end socket body. According to the utility model, the insertion part is arranged in the inner peripheral side area of the welding end face, so that the collecting groove in the outer wall of the insertion part is aligned with the welding end face; the first channel and the second channel on the end socket body are used as air flow inlet and outlet channels, the first channel is connected with an air source, during welding, air flow can be input through the first channel, then the air flow passes through the collecting tank, and welding slag collected in the collecting tank flows to the second channel under the action of the welding slag so as to be cleaned and discharged; in this way, the welding slag is effectively cleaned and discharged out of the sleeve, the welding slag is prevented from entering the sealing face of the valve in the pressure test process, and therefore the purpose of protecting the sealing performance of the valve is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the valve pressure test field, concretely relates to a head pump plate structure and pressure test device. BACKGROUND

[0002] In the valve pressure test, the welded head pump plate is usually used, and the reasons mainly include being capable of ensuring high sealing property, bearing high pressure environment, verifying the integrity and reliability of the ball valve. The welded head can bear higher pressure than working pressure in the testing process due to its material and design, guaranteeing that the valve does not leak or damage under the simulated actual working condition. In addition, the use of the welded head is suitable for various test types, including water pressure and air pressure test. These characteristics make the welded head pump plate an indispensable part in the ball valve manufacturing and quality verification process.

[0003] In the related art, welding slag is prone to falling into the sleeve pipe during the welding process of the valve sleeve pipe and the pump plate weld. In the ball valve pressure test process, the welding slag enters the ball seat sealing surface with the medium and damages the ball seat sealing surface during opening and closing, resulting in valve leakage. The welded head pump plate has no structure design for removing welding slag. SUMMARY

[0004] Therefore, the utility model aims at providing a valve head pump plate structure and pressure test device with a welding slag removal function to protect the sealing performance in the valve pressure test process.

[0005] In a first aspect, the utility model provides a head pump plate structure, which comprises:

[0006] The head body has a welded end face and an insertion part. The welded end face is suitable for welding with the valve sleeve pipe. The insertion part is arranged at the inner circumferential side area of the welded end face, and the insertion part is arranged to extend away from the head body.

[0007] The first channel is suitable for connecting with the gas source. The insertion part is recessed with a collection groove on the wall surface facing the welded end face. The collection groove is connected between the first channel and the second channel.

[0008] The end cover pump plate structure provided by the utility model is characterized in that, in the assembly and welding stage, the insertion part is inserted into the inner cavity of the valve sleeve pipe, the welding end face is arranged towards the welding side of the valve sleeve pipe, the insertion part is arranged on the inner peripheral side of the welding end face, the collection groove on the outer wall of the insertion part is aligned with the welding end face, the first channel and the second channel on the end cover body are used as the inlet and outlet channels of the airflow, the first channel is connected with the air source, and in the welding process, the airflow can be input through the first channel, the airflow passes through the collection groove, the welding slag collected in the collection groove is circulated to the second channel, and the welding slag is cleaned and discharged.

[0009] In an alternative embodiment, a step is arranged on the insertion part, and the outer peripheral wall of the step is adapted to abut against the inner wall of the valve sleeve pipe, and the step is arranged adjacent to the collection groove.

[0010] In an alternative embodiment, the end cover pump plate structure further comprises a sealing member, and the sealing member is arranged on the step in a sleeved manner. The sealing member on the step blocks the welding slag, so that the welding slag cannot enter the inner cavity of the valve through the step and the inner wall of the valve sleeve pipe.

[0011] In an alternative embodiment, the step is arranged in a ring structure, the insertion part is arranged in a rotary body structure, and the collection groove is arranged in a ring structure.

[0012] In an alternative embodiment, first and second coupling tables are arranged on the outer wall of the end cover body in a spaced manner, air channel structures are arranged in the first and second coupling tables respectively, the air channel structure in the first coupling table is arranged in communication with the first channel, and the air channel structure in the second coupling table is arranged in communication with the second channel. By arranging the two coupling tables, on the one hand, the structure of the coupling table is designed to be raised, so that the air channel can be conveniently arranged and extended, and the external air source mechanism can be conveniently connected; on the other hand, the structure interference can be avoided, and the mutual influence between the welding seam formed by welding and the connection between the external air source mechanism and the inner channel of the end cover body can be reduced.

[0013] In an alternative embodiment, the end cover pump plate structure further comprises first and second plugging members, the first plugging member is arranged on the first coupling table in a detachable manner to plug the air channel structure therein, and the second plugging member is arranged on the second coupling table in a detachable manner to plug the air channel structure therein.

[0014] In an alternative embodiment, a threaded hole is arranged on the side of any coupling table away from the end cover body, and any plugging member is arranged as a threaded plug.

[0015] In one optional embodiment, the first channel and the second channel are respectively bent and disposed on the end cap body. The first channel has a first end and a second end, the first end being disposed on the outer wall surface of the end cap body spaced apart from the welding end face, and the second end extending to the insertion portion to communicate with the collection groove. The second channel has a third end and a fourth end, the third end being disposed on the outer wall surface of the end cap body spaced apart from the welding end face, and the fourth end extending to the insertion portion to communicate with the collection groove. One purpose of this bending design in this embodiment is to facilitate the processing of the first channel and the second channel.

[0016] In one optional embodiment, the inner wall surface of the end cap body and the inner wall surface of the insertion portion together form a connecting cavity, the connecting cavity being adapted to communicate with the inner cavity of the valve sleeve, and a test channel is provided on the end cap body, the test channel being connected to the connecting cavity.

[0017] Secondly, this utility model also provides a pressure testing device, including the aforementioned head pump plate structure. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the connection between the end cap pump plate structure and the valve sleeve provided by this utility model during the welding stage;

[0020] Figure 2 A schematic diagram of the end cap pump plate structure provided by this utility model;

[0021] Figure 3 A schematic diagram showing the connection between the end cap pump plate structure and the valve sleeve provided by this utility model during the pressure test stage;

[0022] Figure 4 A schematic diagram of the pressure testing device provided by this utility model when used for testing valves;

[0023] Explanation of reference numerals in the attached figures:

[0024] 101-Head body; 102-First channel; 103-Second channel; 104-Collection groove; 105-Insertion part; 106-Welding end face; 107-First connecting platform; 108-Second connecting platform; 109-Test channel; 1010-Step;

[0025] 201 - First sealing element; 202 - Second sealing element; 203 - Third sealing element; 204 - Sealing element;

[0026] 3-Valve sleeve; 4-Welded structure. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0031] Example 1

[0032] According to an embodiment of this utility model, a head pump plate structure is provided, suitable for valve pressure testing, such as... Figures 1 to 3 As shown, the head pump plate structure includes a head body 101, which has a welding end face 106 and an insertion portion 105. The welding end face 106 is suitable for welding with the valve sleeve 3, and the insertion portion 105 is disposed in the inner circumferential region of the welding end face 106. The insertion portion 105 extends away from the head body 101.

[0033] In this embodiment, the end cap body 101 is provided with a first channel 102 and a second channel 103 that are spaced apart from each other. The first channel 102 is adapted to be connected to a gas source. A collection groove 104 is recessed on the wall surface of the insertion part 105 facing the welding end face 106. The collection groove 104 is connected between the first channel 102 and the second channel 103.

[0034] In the assembly and welding stage of the end cap pump plate structure provided in this embodiment, the insertion part 105 is inserted and extends into the inner cavity of the valve sleeve 3, and the welding end face 106 is set facing the welding side of the valve sleeve 3. By setting the insertion part 105 in the inner circumferential area of ​​the welding end face 106, the collection groove 104 on the outer wall of the insertion part 105 is aligned with the welding end face 106. The first channel 102 and the second channel 103 on the end cap body 101 are used as airflow inlet and outlet channels. The first channel 102 is connected to the air source. During welding, airflow can be input through the first channel 102, and the airflow then passes through the collection groove 104 to carry the welding slag collected in the collection groove 104 to the second channel 103 for cleaning and discharge. In this way, welding slag is effectively cleaned and discharged outside the sleeve, preventing welding slag from entering the valve sealing surface during the pressure test, thereby achieving the purpose of protecting the valve sealing performance.

[0035] Preferably, the collection area of ​​the collection tank 104 radially covers the welding area between the receiving welding end face 106 and the welding side of the valve sleeve 3 to maximize the collection of welding slag.

[0036] As a preferred embodiment, such as Figure 1 As shown, the first channel 102 is located on the top side of the head body 101, and the second channel 103 is located on the bottom side of the head body 101. When venting to remove welding slag, gravity can be used to facilitate the rapid entry of welding slag into the second channel 103 for discharge, thereby improving the slag removal capacity.

[0037] In one alternative implementation, such as Figure 1 As shown, the insertion part 105 is provided with a step 1010, the outer peripheral wall of the step 1010 is adapted to abut against the inner wall of the valve sleeve 3, and the step 1010 is disposed adjacent to the collection tank 104.

[0038] In one alternative implementation, such as Figure 2 As shown, the end cap pump plate structure also includes a sealing element 204, which is sleeved on the step 1010. In a specific embodiment, the outer peripheral wall of the step 1010 is recessed with an assembly groove, and the sealing element 204 is a dustproof graphite rope connected to the assembly groove; the dustproof graphite rope on the step 1010 blocks welding slag, preventing welding slag from entering the valve cavity through the inner wall of the step 1010 and the valve sleeve 3.

[0039] In one optional embodiment, the step 1010 is configured as a ring structure, the insertion portion 105 is configured as a rotating body structure, and the collection groove 104 is configured as a ring structure. The end cap body 101 may be configured as a rotating body structure.

[0040] In one alternative implementation, such as Figure 2 As shown, the outer wall of the head body 101 is provided with a first connecting platform 107 and a second connecting platform 108 spaced apart. Each connecting platform 107 and the second connecting platform 108 has a gas passage structure. The gas passage structure in the first connecting platform 107 is connected to the first channel 102, and the gas passage structure in the second connecting platform 108 is connected to the second channel 103. By setting two connecting platforms, on the one hand, the elevated design of the connecting platform structure facilitates the extension and layout of the gas passages and the connection of external gas source mechanisms; on the other hand, it helps to avoid structural interference and reduce the mutual influence between the weld seam formed by welding and the connection between the external gas source mechanism and the internal channel of the head body 101.

[0041] In one alternative implementation, such as Figure 2 and Figure 3 As shown, the end cap pump plate structure also includes a first sealing component 201 and a second sealing component 202. The first sealing component 201 is detachably mounted on the first connecting platform 107 to block its internal air passage structure, and the second sealing component 202 is detachably mounted on the second connecting platform 108 to block its internal air passage structure.

[0042] Of course, in some embodiments, the first channel 102 can also be formed by the air passage structure inside the first connecting platform 107 and the bent air passage structure inside the end cap body 101, and the second channel 103 can be formed by the air passage structure inside the second connecting platform 108 and the bent air passage structure inside the end cap body 101.

[0043] In one specific embodiment, a threaded hole is provided on the side of any connecting platform away from the head body 101, and any sealing element is configured as a screw plug.

[0044] The head pump plate structure provided by this utility model utilizes a raised connecting platform design to keep the threaded connection between the screw plug and the threaded hole away from the weld, preventing deformation of the threaded hole and affecting the weld seal.

[0045] In one optional embodiment, the first channel 102 and the second channel 103 are respectively bent and disposed on the end cap body 101. The first channel 102 has a first end and a second end. The first end is disposed on the outer wall surface of the end cap body 101 spaced apart from the welding end face 106, and the second end extends to the insertion portion 105 to communicate with the collection groove 104. The second channel 103 has a third end and a fourth end. The third end is disposed on the outer wall surface of the end cap body 101 spaced apart from the welding end face 106, and the fourth end extends to the insertion portion 105 to communicate with the collection groove 104.

[0046] Taking the first channel 102 as an example, the first channel 102 has a first section and a second section. The first section is connected to the air passage structure in the first connecting platform 107, and the second section is connected to the collection tank 104. The first section and the second section are designed with bends, and the first section and the second section can be set as air vents. As a preferred embodiment, the first section and the second section are designed with right-angle bends. The second channel 103 can also adopt the same structural design.

[0047] One purpose of this bending design in this embodiment is to facilitate the processing of the first channel 102. Taking the first channel 102 as an example, it can meet the manufacturing requirements that the first end is set on the outer wall of the end cap body 101 and the second end is connected to the collection groove 104. In the specific processing and manufacturing stage, when processing the second section, the insertion part 105 is subjected to through processing, specifically through the step 1010, see [link to documentation]. Figure 2 The second section is processed from left to right. For the process hole formed on the step 1010, it can be sealed by other structures to prevent welding slag from entering the valve through the process hole. A third sealing component 203 is connected to the process hole. The third sealing component 203 can be a screw plug to seal the process hole.

[0048] In one alternative implementation, such as Figure 1 As shown, the inner wall surface of the end cap body 101 and the inner wall surface of the insertion part 105 together form a connecting cavity, which is adapted to communicate with the inner cavity of the valve sleeve 3. A test channel 109 is provided on the end cap body 101, and the test channel 109 is connected to the connecting cavity.

[0049] The end cap pump plate structure provided by this utility model has a unique channel design for collecting weld slag, which allows the weld slag to be discharged from the valve sleeve 3 through the channel, thus protecting the valve's sealing performance.

[0050] The end cap pump plate structure provided by this utility model can be configured with an air source mechanism (not shown in the figure). The air source mechanism provides airflow, and the welding slag can be quickly removed and cleaned by using the negative pressure adsorption of the second channel 103 or the pressurization of the first channel 102 and the negative pressure of the second channel 103, so as to avoid the welding slag from damaging the sealing function of the valve.

[0051] The working principle of the end cap pump plate structure provided by this utility model is as follows:

[0052] like Figure 1 As shown, the insertion part 105 is inserted into the valve sleeve 3, and the welding end face 106 on the end cap body 101 is aligned with the welding side of the valve sleeve 3.

[0053] During the welding process to form a weld, the weld slag produced falls into the collection tank 104. An air source is connected to the first channel 102 on one side. Under the pressure of the air source, the weld slag is discharged through the second channel 103 on the other side, thus achieving the purpose of slag discharge.

[0054] like Figure 3 and Figure 4 As shown, after the valve sleeve 3 and the head body 101 are welded together, a pressure test is performed;

[0055] The air passage structures on the first connecting platform 107 and the second connecting platform 108 on both sides are sealed by the first sealing member 201 and the second sealing member 202 respectively, and then a pressure test is carried out through the test channel 109.

[0056] The end cap pump plate structure provided in this embodiment has a slag removal structure function, which can protect the sealing performance of the valve during the pressure test.

[0057] Example 2

[0058] This embodiment provides a pressure testing device, including the head pump plate structure of Embodiment 1. The pressure testing device employing the head pump plate structure can effectively discharge welding slag during the welding stage, preventing slag from entering the valve and thus compromising its sealing function.

[0059] In some implementations, such as Figure 4 As shown, taking the ball valve pressure test as an example, the ball valve has two valve sleeves 3, and the two valve sleeves 3 are respectively welded with end caps 101. The specific pressure test can be carried out by venting through the test channel 109 on the end cap 101.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A head pump plate structure, characterized in that, include: The head body (101) has a welding end face (106) and an insertion portion (105). The welding end face (106) is adapted to be welded to a valve sleeve (3). The insertion portion (105) is disposed in the inner peripheral region of the welding end face (106). The insertion portion (105) extends away from the head body (101). The end cap body (101) is provided with a first channel (102) and a second channel (103) spaced apart from each other. The first channel (102) is adapted to be connected to a gas source. The insertion part (105) has a collection groove (104) recessed on the wall facing the welding end face (106). The collection groove (104) is connected between the first channel (102) and the second channel (103).

2. The head pump plate structure according to claim 1, characterized in that, The insertion part (105) is provided with a step (1010), the outer peripheral wall of the step (1010) is adapted to abut against the inner wall of the valve sleeve (3), and the step (1010) is arranged adjacent to the collection groove (104).

3. The head pump plate structure according to claim 2, characterized in that, The head pump plate structure also includes a sealing element (204), which is sleeved on the step (1010).

4. The head pump plate structure according to claim 2, characterized in that, The step (1010) is configured as a ring structure, the insertion part (105) is configured as a rotating body structure, and the collection groove (104) is configured as a ring structure.

5. The head pump plate structure according to claim 1, characterized in that, The outer wall of the end cap body (101) is provided with a first connecting platform (107) and a second connecting platform (108) arranged at intervals. The first connecting platform (107) and the second connecting platform (108) are respectively provided with air passage structures. The air passage structure in the first connecting platform (107) is connected to the first channel (102), and the air passage structure in the second connecting platform (108) is connected to the second channel (103).

6. The head pump plate structure according to claim 5, characterized in that, The end cap pump plate structure also includes a first sealing component (201) and a second sealing component (202). The first sealing component (201) is detachably mounted on the first connecting platform (107) to block its internal air passage structure, and the second sealing component (202) is detachably mounted on the second connecting platform (108) to block its internal air passage structure.

7. The head pump plate structure according to claim 6, characterized in that, A threaded hole is provided on the side of any connecting platform away from the head body (101), and any sealing element is configured as a screw plug.

8. The head pump plate structure according to any one of claims 1-7, characterized in that, The first channel (102) and the second channel (103) are respectively bent and disposed on the head body (101). The first channel (102) has a first end and a second end. The first end is disposed on the outer wall surface of the head body (101) spaced apart from the welding end face (106). The second end extends to the insertion portion (105) to communicate with the collection groove (104). The second channel (103) has a third end and a fourth end. The third end is disposed on the outer wall surface of the head body (101) spaced apart from the welding end face (106). The fourth end extends to the insertion portion (105) to communicate with the collection groove (104).

9. The head pump plate structure according to any one of claims 1-7, characterized in that, The inner wall surface of the end cap body (101) and the inner wall surface of the insertion part (105) together form a connecting cavity, which is adapted to communicate with the inner cavity of the valve sleeve (3). A test channel (109) is provided on the end cap body (101), and the test channel (109) is connected to the connecting cavity.

10. A pressure testing apparatus, characterized in that, The head pump plate structure includes any one of claims 1-9.

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