A kind of tooling

Abstract

This disclosure provides a tooling for fixing a ball valve during dimensional measurement. The ball valve includes a core ball and a valve seat. The tooling includes a base, a clamp, a mandrel, a bushing assembly, and a top plate. The clamp is fixed to the base. The mandrel passes through the flow channel of the core ball and is detachably connected to the clamp. The bushing assembly is sleeved on the mandrel and located within the flow channel. The mandrel is fixedly connected to the core ball via the bushing assembly. When the ball valve is in the open position, the valve seat sleeves the mandrel from both sides of the core ball to measure the dimensions of the ball valve in the open position. When the ball valve is in the closed position, the valve seat covers the sealing surface of the core ball on the side away from the base. The top plate abuts against the valve seat from above through its connection with the clamp to measure the dimensions of the ball valve in the closed position. This tooling can accurately reproduce the sealing state of the core ball and valve seat when the ball valve is in the open and closed positions, thus meeting the requirements for dimensional measurement when the core ball and valve seat are in contact.

Description

Technical Field

[0001] The invention belongs to the field of mechanical equipment, and in particular relates to a tool. Background Art

[0002] Ball valves are widely used in coal chemical, petrochemical, steel, metallurgy, air separation and other industries due to their advantages such as small fluid resistance, large flow capacity, fast switching, good sealing performance, long life, and easy gas and electric control.

[0003] The main function of the ball valve in the pipeline is to realize the cut-off function. Usually, the ball valve stem drives the ball to rotate 90 degrees to realize the action from open to close or from close to open. The closed state is to achieve sealing by pressing the ball and the valve seat together. The ball valve is sealed by the preload force provided by the spring or disc spring under normal pressure or low pressure. At the same time, due to the high sealing level requirements of ball valves, especially ball valves for special media, the ball sealing surface and the valve seat are ground one-to-one, so it is necessary to accurately measure the size of the ball seat to provide a size basis for the spring preload.

[0004] In order to measure the size of the ball valve, it is necessary to reproduce the sealing state of the core ball and the valve seat when the ball valve is in the open state and in the closed state. Only when the core ball and the valve seat are in a fully sealed state and optimally matched, can the precise size of the ball valve be obtained. It can be seen that accurately fixing the core ball and the valve seat becomes the main obstacle in the process of measuring the size. At present, due to the inability to accurately fix the core ball and the valve seat, it is impossible to obtain accurate data about the core ball and the valve seat in the subsequent measurement process, causing economic losses to users. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides a tooling with a simple structure and easy operation, which is suitable for fixing the ball valve when measuring the size of the ball valve.

[0006] To achieve the above purpose, the technical solution adopted by the embodiment of the present invention is:

[0007] A tool, which is used to fix the ball valve when measuring the size of the ball valve; the ball valve includes a core ball and a valve seat, and the tool includes: a base, a clamp, a core shaft, a shaft sleeve assembly and an upper plate; the clamp is fixed to the base; the core shaft is inserted into the flow channel of the core ball and is detachably connected to the clamp; the shaft sleeve assembly is sleeved on the core shaft and is located in the flow channel; the core shaft is fixedly connected to the core ball through the shaft sleeve assembly; when the ball valve is in an open state, the valve seat sleeves the core ball from both sides of the core ball axis, and squeeze the valve seat through the clamp so that the valve seat is in contact with the sealing surface of the core ball along the axial direction of the flow channel to measure the size of the ball valve in an open state; when the ball valve is in a closed state, the valve seat is covered on the sealing surface of the core ball on the side away from the base; the upper plate is connected to the clamp and abuts against the valve seat from above, so that the valve seat is in contact with the sealing surface of the core ball along the axial direction perpendicular to the flow channel to measure the size of the ball valve in a closed state.

[0008] In some embodiments of the present disclosure, the clamp includes a first side plate and a second side plate that are arranged opposite to each other; the first side plate and the second side plate are respectively fixed to the base; and the upper plate is fixedly connected to the first side plate and the second side plate.

[0009] In some embodiments of the present disclosure, the base includes a plurality of slide grooves parallel to each other for adjusting the relative position between the first side panel and the second side panel; the first side panel and the second side panel are respectively connected to the slide grooves by bolts.

[0010] In some embodiments of the present disclosure, two ends of the core shaft are respectively connected to the first side plate and the second side plate.

[0011] In some embodiments of the present disclosure, the sleeve assembly includes a first support plate, an expansion sleeve and a second support plate which are sequentially arranged along the axial direction of the core shaft and are respectively sleeved on the core shaft; the first support plate and the second support plate are respectively provided with through holes.

[0012] In some embodiments of the present disclosure, the core shaft is provided with a convex ring corresponding to the first support plate along its circumference; the convex ring abuts against the first support plate on the side away from the first side plate; the core shaft is provided with an external thread corresponding to the second support plate at one end close to the second side plate, and the through hole of the second support plate is provided with an internal thread; the second support plate is threadedly connected to the core shaft.

[0013] In some embodiments of the present disclosure, the first support plate and the second support plate respectively abut against ends of the expansion sleeve.

[0014] In some embodiments of the present disclosure, the end surface of the expansion sleeve is set to an inclined surface, and the inclination angle is set to 45°; the first support plate and the second support plate are correspondingly set to inclined surfaces in matching shapes on their respective end surfaces, and the inclination angle is 45°, so that the outer peripheral surface of the expansion sleeve is pressed against the inner wall of the flow channel under the force applied by the first support plate and the second support plate.

[0015] In some embodiments of the present disclosure, the core shaft is configured as a stepped shaft; wherein the cross-section at one end close to the convex ring is configured as a square, and the cross-section at one end close to the external thread is configured as a circle.

[0016] In some embodiments of the present disclosure, the outer peripheral surface of the expansion sleeve is configured as a groove surface.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In actual work, the core ball and valve seat in the ball valve have different structural forms and processing technologies, which makes it impossible to accurately reproduce the size of the core ball and valve seat in the ball valve in the actual application scenario, which directly affects the accuracy of the size detection of the core ball and valve seat. The tooling provided by the present invention can truly reproduce the sealing state of the core ball and valve seat in the open and closed states of the ball valve, so as to measure the precise size under the condition that the core ball and valve seat are fully matched.

[0019] In addition, the tooling of the present invention has a simple structure and is easy to operate, thereby greatly improving the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0021] Figure 1 It is a structural schematic diagram of the tooling of an embodiment of the present invention when the ball valve is in an open position;

[0022] Figure 2 It is a structural schematic diagram of the tooling of an embodiment of the present invention when the ball valve is in a closed position;

[0023] Figure 3 It is a left side view of the tooling of the embodiment of the present invention when the ball valve is in the closed position;

[0024] Figure 4 It is a right side view of the tooling according to an embodiment of the present invention when the ball valve is in the closed position.

[0025] Description of Reference Numerals

[0026] 1-base; 2-mandrel; 3-flow channel; 4-upper plate; 5-first side plate;

[0027] 6-second side plate; 7-slideway; 8-bolt; 9-first support plate; 10-expansion sleeve;

[0028] 11-second support plate; 12-convex ring; 13-inclined surface; 14-outer peripheral surface; 15-inner wall;

[0029] 16-core ball; 17-valve seat; 18-sealing surface DETAILED DESCRIPTION

[0030] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings, but it is not intended to limit the present invention. The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0031] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0033] In the embodiments of the present application, the terms "open position" and "closed position" are specifically used, and have the following meanings respectively. For example, when the ball valve is in the "open position", the axis of the valve seat 17 coincides with the axis of the flow channel 3 of the core ball 16, and the fluid medium can pass through the valve seat 17 and the flow channel 3 of the core ball 16; on the contrary, when the ball valve is in the "closed position", the valve seat 17 fits with the outlet sealing surface and the inlet sealing surface of the core ball 16 respectively, and the axes therebetween are perpendicular to each other. Due to the fit, the valve seat 17 and the flow channel 3 of the core ball 16 cannot communicate, and the fluid medium cannot pass through the valve seat 17 and the flow channel 3 of the core ball 16.

[0034] In order to solve the problem in the prior art that the matching state of the core ball 16 and the valve seat 17 in actual application scenarios cannot be reproduced by a precise fixing method, the present invention provides the following implementation scheme.

[0035] Combination Figure 1 and Figure 2 , a tooling, which is used to fix the ball valve when measuring the size of the ball valve; the ball valve includes a core ball 16 and a valve seat 17, and the tooling includes: a base 1, a fixture, a core shaft 2, a sleeve assembly and an upper plate 4; the fixture is fixed to the base 1; the core shaft 2 is passed through the flow channel 3 of the core ball 16 and is detachably connected to the fixture; the sleeve assembly is sleeved on the core shaft 2 and is located in the flow channel 3; the core shaft 2 is fixedly connected to the core ball 16 through the sleeve assembly; when the ball valve is in the open state, the valve seat 17 sleeves the core shaft from both sides of the core ball 16 2, and squeeze the valve seat 17 through the clamp so that the valve seat 17 is pressed against the sealing surface 18 of the core ball 16 along the axial direction of the flow channel 3 to measure the size of the ball valve in the open state; when the ball valve is in the closed state, the valve seat 17 is covered on the sealing surface 18 of the core ball 16 on the side away from the base 1; the upper plate 4 is connected to the clamp and abuts against the valve seat 17 from above, so that the valve seat 17 is pressed against the sealing surface 18 of the core ball 16 along the axial direction perpendicular to the flow channel 3 to measure the size of the ball valve in the closed state.

[0036] Through the tooling of the above-mentioned embodiment, the sealing state of the core ball 16 and the valve seat 17 of the ball valve in the open state and the closed state can be truly reproduced, and then after the core ball 16 and the valve seat 17 are fixed, the two can be fully sealed and matched, making full preparations for the subsequent measurement of the precise dimensions of the core ball 16 and the valve seat 17.

[0037] In one embodiment, in combination Figures 1 to 4 , the fixture includes a first side plate 5 and a second side plate 6 which are arranged opposite to each other; the first side plate 5 and the second side plate 6 are fixed to the base 1 respectively; the upper plate 4 is fixedly connected to the first side plate 5 and the second side plate 6. Through this arrangement, the core ball 16 and the valve seat 17 can be clamped between the first side plate 5 and the second side plate 6, so that the core ball 16 and the valve seat 17 can maintain a stable relative position. For example, when the ball valve is in the open position, this design can achieve the purpose of fixing and meet the requirements of subsequent measurements; on the contrary, when the ball valve is in the closed position, the upper plate 4 is fixedly connected to the first side plate 5 and the second side plate 6; thus, the measurement requirements can be met.

[0038] It should be noted that, although the embodiments of the present application do not involve a specific measurement process, accurate measurement data can only be guaranteed if the ball valve is fixed, the same applies below.

[0039] In one embodiment, in order to meet the needs of fixing core balls 16 and valve seats 17 of different sizes, the practicality and applicability of the tooling of this embodiment are improved. Figure 1 and Figure 2The base 1 includes a plurality of slide grooves 7 parallel to each other, which are used to adjust the relative position between the first side plate 5 and the second side plate 6; the first side plate 5 and the second side plate 6 are respectively connected to the slide grooves 7 by bolts 8. In this embodiment, when fixing the core ball 16 and the valve seat 17 of different sizes, the relative positions of the first side plate 5 and the second side plate 6 on the base 1 are moved to adjust the distance between the first side plate 5 and the second side plate 6. By setting parallel slide grooves 7, it is possible to arbitrarily adjust the distance between the first side plate 5 and the second side plate 6 under the premise of pre-setting the corresponding through holes distributed on the first side plate 5 and the second side plate 6, and fix them by bolts 8. As a result, the size range of the tooling used in this embodiment to fix the core ball 16 and the valve seat 17 is effectively improved.

[0040] In one embodiment, in combination Figure 1 and Figure 2 , the two ends of the core shaft 2 are respectively connected to the first side plate 5 and the second side plate 6. Through this arrangement, the relative position between the core ball 16 and the valve seat 17 can be accurately controlled to ensure accurate matching. For example, when the ball valve is in the open state, the valve seat 17 sleeves the core shaft 2 from both sides of the core ball 16, so that the core ball 16 and the valve seat 17 can keep their corresponding axes coincident.

[0041] In one embodiment, in combination Figure 1 and Figure 2 The sleeve assembly includes a first support plate 9, an expansion sleeve 10 and a second support plate 11 which are sequentially arranged along the axial direction of the core shaft 2 and are respectively sleeved on the core shaft 2; the first support plate 9 and the second support plate 11 are respectively provided with through holes.

[0042] In one embodiment, in combination Figure 1 and Figure 2 , the mandrel 2 is provided with a convex ring 12 corresponding to the first support plate 9 along its circumference; the convex ring 12 abuts against the first support plate 9 on the side away from the first side plate 5; the mandrel 2 is provided with an external thread corresponding to the second support plate 11 at one end close to the second side plate 6, and the through hole of the second support plate 11 is provided with an internal thread; the second support plate 11 is threadedly connected with the mandrel 2. In this embodiment, by rotating the second side plate 6 or the core ball 16, the second side plate 6 moves toward the expansion sleeve 10, thereby regulating the connection state between the expansion sleeve 10 and the core ball 16. In addition, in this embodiment, by providing the convex ring 12, the position of the first side plate 5 on the mandrel 2 is limited, thereby ensuring the relative position of the first side plate 5 and the core ball 16.

[0043] In one embodiment, in combination Figure 1 and Figure 2, the first support plate 9 and the second support plate 11 respectively abut against the ends of the expansion sleeve 10. In combination with the previous embodiment, during the process of the second side plate 6 exerting force on the expansion sleeve 10, the second side plate 6 exerts a force along the axial direction of the core shaft 2 on the first support plate 9 through the expansion sleeve 10. Due to the presence of the convex ring 12, the expansion sleeve 10 begins to expand and deform along the radial direction of the core shaft 2 after moving to a limited position, and finally contacts and squeezes the inner wall 15 of the flow channel 3 of the core ball 16. Under the action of friction, the expansion sleeve 10 and the core ball 16 are clamped in the flow channel 3 of the core ball 16, forming a fixed connection with each other, thereby achieving the purpose of fixing the core ball 16.

[0044] In the above embodiment, when fixing ball valves of different sizes, the disassembly operation is first required. By rotating the second side plate 6 or the core ball 16 in the opposite direction, the second side plate 6 is moved away from the expansion sleeve 10. As the expansion sleeve 10 gradually loses the force acting along the axial direction of the core shaft 2, the expansion sleeve 10 contracts and deforms along the radial direction of the core shaft 2 and returns to its original state. Finally, the expansion sleeve 10 and the core ball 16 are loosened from each other. By moving the expansion sleeve 10 out of the flow channel 3, the disassembly operation is completed. Subsequently, the above operation is repeated to install and fix ball valves of different sizes.

[0045] In one embodiment, in combination Figure 1 and Figure 2 , the end surface of the expansion sleeve 10 is set as an inclined surface 13, and the inclination angle is set to 45°; the first support plate 9 and the second support plate 11 are correspondingly set as the inclined surface 13 at their respective end surfaces in a matching shape, and the inclination angle is 45°. Under the joint force of the first support plate 9 and the second support plate 11, the outer peripheral surface 14 of the expansion sleeve 10 abuts against the inner wall 15 of the flow channel 3, and finally forms a fixed connection. In this embodiment, through this setting, the force transmission is maximized and efficiently improved, so that the expansion sleeve 10 deforms along the radial direction of the core shaft 2.

[0046] In one embodiment, in combination Figures 1 to 4 , the core shaft 2 is constructed as a stepped shaft; wherein the cross section at one end close to the convex ring 12 is constructed as a square, in particular a square; and the cross section at one end close to the external thread is constructed as a circle. Through this setting, the fixed setting for measuring the sizes corresponding to different sealing surfaces 18 of the core ball 16 can be completed by rotating a specific angle, for example, 90° or an odd multiple of 90°. Correspondingly, in the subsequent measurement process, in the case of corresponding different sealing surfaces 18, the sizes of the core ball 16 and the valve seat 17 are measured in the corresponding case, and in the case of the same core ball 16 and valve seat 17, the core ball 16 does not need to be removed from the core shaft 2. In this embodiment, the core shaft 2 is not limited to a stepped shaft, and an ordinary shaft can also meet the requirements of this embodiment.

[0047] Since the sealing surface of the core shaft 2 corresponds to the outlet and inlet of the flow channel 3, it is necessary to distinguish the valve seat 17 and the sealing surface 18, and measure the corresponding dimensions. Therefore, in practical applications, the sealing surface will be divided into an inlet sealing surface and an outlet sealing surface, and different sealing surfaces 18 are matched and fixed with the corresponding valve seats 17, and on the basis of fixation, the subsequent measurement tasks are completed. In this embodiment, since no direct measurement process is involved, no specific distinction is made for the inlet sealing surface and the outlet sealing surface, only for the convenience of understanding the overall solution.

[0048] In one embodiment, in combination Figure 1 and Figure 2 The outer peripheral surface 14 of the expansion sleeve 10 is arranged as a groove surface. Through this arrangement, the purpose is to make it relatively easy for the expansion sleeve 10 to deform in the radial direction.

[0049] In order to fully understand the technical solution of the present invention, a brief description is given of its specific application process, as follows:

[0050] 1. When the ball valve is in the open position:

[0051] The first step is to fix the core ball 16 and the core shaft 2 together, and to sleeve the valve seat 17 on the core shaft 2 from both sides of the core ball 16;

[0052] The second step is to place the core shaft 2 with the core ball 16 and the valve seat 17 installed between the left and right side plates;

[0053] The third step is to adjust the positions of the left and right side plates: press the valve seat 17 onto the core ball 16, and after fixing, the size of the ball valve can be measured.

[0054] 2. When the ball valve is in the closed position:

[0055] The first step is to adjust the position of the core shaft 2: the inlet sealing surface of the core ball 16 is facing upwards, away from the base 1, and the upper plate 4 is pressed against the valve seat 17 matching the inlet sealing surface. After the fixing is completed, the size of the ball valve can be measured;

[0056] The second step is to adjust the position of the core shaft 2 and rotate it 90° or 270°: place the outlet sealing surface of the core ball 16 upwards, repeat the first step, and measure the size of the ball valve.

[0057] The third step is to obtain the size of the ball valve through mathematical calculation.

[0058] In addition, although illustrative embodiments are described herein, the scope includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., combinations of schemes across various embodiments), adjustments, or variations based on the present disclosure. The elements in the claims are to be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the continuation of this application. In addition, the steps of the disclosed methods may be modified in any way, including by reordering steps or inserting or deleting steps. Therefore, it is intended that the description be viewed merely as an example, with the true scope being represented by the following claims and their full range of equivalents.

[0059] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more aspects thereof) can be used in combination with each other. After reading the above description, other embodiments may be used by a person of ordinary skill in the art, for example. Moreover, in the above detailed description, various features may be combined together to simplify the present disclosure. This should not be interpreted as intending that the disclosed features that are not requested for protection are essential to any claim. Therefore, the following claims are incorporated into the specific implementation as examples or embodiments, wherein each claim itself is a separate embodiment, and it can be expected that these embodiments can be combined with each other in various combinations or permutations. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalents given by these claims.

Claims

1. A tool used to fix a ball valve when measuring the size of the ball valve; the ball valve comprises a core ball and a valve seat, characterized in that: The tooling includes: a base, a fixture, a mandrel, a sleeve assembly and an upper plate; The clamp is fixed on the base; The core shaft is inserted into the flow channel of the core ball and is detachably connected to the clamp; The sleeve assembly is sleeved on the core shaft and located in the flow channel; The core shaft is fixedly connected to the core ball through the shaft sleeve assembly; When the ball valve is in the open position, the valve seat sleeves the core shaft from both sides of the core ball, and the valve seat is squeezed by the clamp so that the valve seat is attached to the sealing surface of the core ball along the axial direction of the flow channel to measure the size of the ball valve in the open position; When the ball valve is in a closed position, the valve seat is covered on the sealing surface of the core ball on a side away from the base; the upper plate is connected to the clamp and abuts against the valve seat from above, so that the valve seat abuts against the sealing surface of the core ball along the axial direction perpendicular to the flow channel, so as to measure the size of the ball valve in the closed position; The sleeve assembly comprises a first support plate, an expansion sleeve and a second support plate which are sequentially arranged along the axial direction of the core shaft and are respectively sleeved on the core shaft; The first support plate and the second support plate respectively abut against the ends of the expansion sleeve; The outer peripheral surface of the expansion sleeve is configured as a groove surface.

2. The tooling according to claim 1, characterized in that: The clamp comprises a first side plate and a second side plate which are arranged opposite to each other; the first side plate and the second side plate are respectively fixed to the base.

3. The tooling according to claim 2, characterized in that: The base includes a plurality of slide grooves parallel to each other, which are used to adjust the relative position between the first side plate and the second side plate; the first side plate and the second side plate are respectively connected to the slide grooves by bolts.

4. The tooling according to claim 3, characterized in that: Two ends of the core shaft are correspondingly connected to the first side plate and the second side plate respectively.

5. The tooling according to claim 4, characterized in that: The first support plate and the second support plate are respectively provided with through holes.

6. The tooling according to claim 5, characterized in that: The core shaft is provided with a convex ring corresponding to the first support plate along its circumference; the convex ring abuts against the first support plate at a side away from the first side plate; The core shaft is provided with an external thread corresponding to the second support plate at one end close to the second side plate, and the through hole of the second support plate is provided with an internal thread; the second support plate is threadedly connected to the core shaft.

7. The tooling according to claim 6, characterized in that: The end surface of the expansion sleeve is set as an inclined surface, and the inclination angle is set to 45°; the first support plate and the second support plate are correspondingly set as inclined surfaces in matching shapes at their respective end surfaces, and the inclination angle is 45°, so that the outer circumferential surface of the expansion sleeve is pressed against the inner wall of the flow channel under the force applied by the first support plate and the second support plate.

8. The tooling according to claim 7, characterized in that: The core shaft is configured as a stepped shaft; wherein the cross section at one end close to the convex ring is configured as a square, and the cross section at one end close to the external thread is configured as a circle.

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